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WO2009133690A1 - Unité optique ayant une fonction de correction de déviation, et dispositif optique de photographie - Google Patents

Unité optique ayant une fonction de correction de déviation, et dispositif optique de photographie Download PDF

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Publication number
WO2009133690A1
WO2009133690A1 PCT/JP2009/001912 JP2009001912W WO2009133690A1 WO 2009133690 A1 WO2009133690 A1 WO 2009133690A1 JP 2009001912 W JP2009001912 W JP 2009001912W WO 2009133690 A1 WO2009133690 A1 WO 2009133690A1
Authority
WO
WIPO (PCT)
Prior art keywords
movable module
shake correction
camera shake
magnetic
axis direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2009/001912
Other languages
English (en)
Japanese (ja)
Inventor
鶴田稔史
宮崎清史
武田正
石原久寛
柳澤克重
唐沢敏行
武居勇一
長田章弘
南澤伸司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nidec Instruments Corp
Original Assignee
Nidec Sankyo Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2008147187A external-priority patent/JP5106254B2/ja
Priority claimed from JP2008334723A external-priority patent/JP5140572B2/ja
Application filed by Nidec Sankyo Corp filed Critical Nidec Sankyo Corp
Priority to CN200980115921.XA priority Critical patent/CN102016709B/zh
Publication of WO2009133690A1 publication Critical patent/WO2009133690A1/fr
Anticipated expiration legal-status Critical
Priority to US12/916,918 priority patent/US8238736B2/en
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
    • G02B7/102—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens controlled by a microcomputer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations

Definitions

  • the present invention relates to an optical unit with a shake correction function mounted on a camera-equipped mobile phone or the like, and a photographing optical device incorporating the shake correction function.
  • An imaging optical device mounted on a portable device includes a moving body including a lens, a lens driving mechanism that magnetically drives the moving body in the optical axis direction, and an imaging unit in which an imaging element is supported on a support.
  • various shake correction mechanisms are mounted in order to suppress disturbance of a photographed image due to a user's camera shake, and as such a shake correction mechanism, there is a shake correction mechanism provided in the photographing unit.
  • a structure in which the lens is shifted in a direction to cancel out the shake, a structure in which the image pickup element is shifted in a plane perpendicular to the optical axis, and the like have been put into practical use.
  • the structure in which the shake correction mechanism is incorporated in the photographing unit can be used in a photographing optical device mounted on a relatively large portable device such as a digital camera, but it can be used in a small portable device such as a camera-equipped cellular phone.
  • a photographing optical device mounted on a relatively large portable device such as a digital camera
  • a small portable device such as a camera-equipped cellular phone.
  • the mounted optical apparatus for photographing since the photographing unit is small, it is impossible to incorporate the shake correction mechanism in the photographing unit.
  • the photographing unit is configured as a movable module that can be displaced in a direction intersecting the optical axis on the fixed body (see Patent Document 1).
  • the shake correction mechanism disclosed in Patent Document 1 has a structure in which an imaging unit is elastically urged by a leaf spring against a pivot portion formed on a fixed body so that the imaging unit can swing around the pivot portion as a fulcrum.
  • the imaging unit is swung around the X axis orthogonal to the optical axis by a first imaging unit driving mechanism provided at one place on one side shifted from the pivot portion, and another offset from the pivot portion is provided.
  • the imaging unit is swung around the Y axis orthogonal to the optical axis by a second imaging unit drive mechanism provided at one location on one side.
  • FIG. 10 An object side end portion of the movable module 1081 in which the lens 1083 and the image sensor 1085 are supported on the support 1082 is shown in FIG. While the actuator 1087 is disposed on the side surface of the movable module 1081 while being supported by the fixed body 1089 by the elastic body 1088, the actuator 1087 is arranged on the side of the movable module 1081 based on the detection result of the camera shake detection sensor 1086.
  • Patent Document 2 JP 2007-310084 A JP 2007-129295 A
  • the leaf spring used in the shake correction mechanism described in Patent Document 1 has a shape in which the spring constant is greatly different between the X-axis direction and the Y-axis direction, the first imaging unit drive mechanism and the second imaging function are used.
  • the magnitude and direction of the urging force applied by the leaf spring to the photographing unit does not have linearity. Therefore, there is a problem that the control for the first photographing unit driving mechanism and the second photographing unit driving mechanism becomes extremely complicated.
  • the imaging unit driving magnet is provided on the fixed body side and the imaging unit driving coil is provided on the movable body side imaging unit
  • the wiring structure is complicated, and it is difficult for the photographing unit to increase the number of turns of the photographing unit driving coil. is there.
  • the photographing unit driving coil having a larger mass is provided on the photographing unit on the movable body side, so that a large force is required to swing the photographing unit. Is necessary and its control is difficult.
  • the method of swinging the end of the movable module on the image sensor side has a problem that the movable module cannot be swinged properly. That is, since a flexible wiring member such as a flexible board or a resin-coated lead wire electrically connected to the imaging element or the camera shake detection sensor is drawn from the end of the movable module on the imaging element side, the movable module Since the flexible wiring member must be elastically deformed in order to swing the end portion of the image pickup element, it is difficult to quickly swing the movable module.
  • the flexible wiring member is also elastically deformed, so that the shape return force of the flexible wiring member causes the end of the movable module on the image sensor side. Since extra force is applied and the magnitude of the shape restoring force varies depending on the deformation state of the flexible wiring member, it is difficult to properly swing the end of the movable module on the image sensor side. is there.
  • a magnetic drive mechanism is used as an actuator for camera shake correction
  • the movable module is driven elastically and in a non-contact manner compared to the case where a piezoelectric element is used as in the configuration described in Patent Document 2. Therefore, there is a problem that it is easily influenced by the flexible wiring member.
  • an object of the present invention is to provide an optical unit with a shake correction function that can reliably correct shake by stabilizing the force applied to the movable module when performing shake correction on the movable module. Is to provide.
  • Another object of the present invention is to correct shake by swinging a movable module equipped with a lens and an image sensor, and further, a movable module equipped with a shake detection sensor such as camera shake in addition to the lens and the image sensor.
  • an object of the present invention is to provide an imaging optical device that is less susceptible to deformation of a flexible wiring member drawn out from a movable module.
  • an optical unit with a shake correction function includes a movable module in which at least a lens is supported on a support, and a fixed body that supports the movable module, and the movable unit Between the module and the fixed body, a pivot portion that supports the movable module so as to be swingable in the fixed body, and a magnetic force that swings the movable module in the same direction with the pivot portion as a fulcrum, And a movable module driving mechanism for shake correction that is generated in pairs at two locations facing each other with the pivot portion interposed therebetween.
  • a movable module driving mechanism for swinging the movable module is provided between the movable module and the fixed body, and the movable module is swingably supported with respect to the fixed body via the pivot portion. Therefore, when taking a picture with a camera-equipped mobile phone equipped with an optical unit with a shake correction function, even when a shake or the like occurs, the shake can be corrected by the swing of the movable module. Therefore, since it is not necessary to incorporate a shake correction mechanism in the movable module, the shake correction can be performed even when the shake correction mechanism cannot be provided in the movable module because the movable module is small.
  • the movable module driving mechanism disposed at two positions on both sides sandwiching the pivot portion generates a magnetic force that swings the movable module in the same direction, so that the movable portion is driven only on one side with respect to the pivot portion.
  • the driving ability is stable. That is, when the distance from the pivot portion of the movable module drive mechanism is shifted to the one where the driving force is weakened, the other movable module drive mechanism is shifted to the one where the driving force is increased. Therefore, according to the present invention, shakes such as camera shake can be accurately corrected.
  • the movable module may be configured to be pressed against the pivot portion by a biasing means using a magnetic biasing force or a biasing means using a spring member.
  • the biasing means includes an inner peripheral side coupling portion coupled to the movable module;
  • a spring member comprising an outer peripheral side connecting part connected to a fixed body, and a plurality of arm parts extending in the same circumferential direction from the inner peripheral side connecting part and connected to the outer peripheral side connecting part, for example
  • a gimbal spring is preferable.
  • biasing means exhibits substantially uniform urging
  • the arm part is extended in the same direction of the circumferential direction, an arm part can be extended long. Therefore, the urging means exhibits an urging force with high linearity over the entire movable range of the movable module, so that it is possible to reliably correct camera shake without complicating the control for the movable module drive mechanism.
  • an optical unit with a shake correction function includes a movable module in which at least a lens is supported on a support, and a fixed body that supports the movable module. And between the movable module and the fixed body, a pivot portion that supports the movable module in a swingable manner in the fixed body, and an urging means that presses the movable module toward the pivot portion, A movable module drive mechanism for shake correction that generates a magnetic force that swings the movable module with the pivot portion as a fulcrum, and the biasing means is connected to the inner peripheral side connected to the movable module. A plurality of arms that extend in the same circumferential direction from the inner peripheral side connecting portion and are connected to the outer peripheral side connecting portion.
  • the biasing means is a spring member having the above-described configuration, for example, a gimbal spring, it exerts a substantially uniform biasing force in all directions, so that the posture of the movable module is stable.
  • the control of the movable module driving mechanism is extremely easy.
  • the arm part is extended in the same direction of the circumferential direction, an arm part can be extended long. Therefore, the urging means exhibits an urging force with high linearity over the entire movable range of the movable module, so that it is possible to reliably correct camera shake without complicating the control for the movable module drive mechanism.
  • the movable module drive mechanism generates a pair of magnetic force that swings the movable module in the same direction with the pivot portion as a fulcrum at two opposing locations with the pivot portion interposed therebetween. It is preferable to make it.
  • the movable module driving mechanism arranged at two positions on both sides sandwiching the pivot portion generates a magnetic force that causes the movable module to swing in the same direction. Therefore, the movable module is driven only on one side with respect to the pivot portion. Unlike the case where the mechanism is arranged, the driving ability is stable.
  • the movable module and the fixed body are disposed between the movable module and the fixed body.
  • the module driving mechanism it is preferable that two sets of movable module driving mechanisms for generating a magnetic driving force that swings around two of the X, Y, and Z axes are configured.
  • the two sets of movable module drive mechanisms are paired at two locations facing each other with the pivot portion interposed therebetween in the Y-axis direction so that the movable module is placed around one of the X-axis and Y-axis.
  • the movable module is paired with the first movable module drive mechanism for generating a magnetic drive force to be oscillated, and at two locations facing each other with the pivot portion interposed therebetween in the X-axis direction.
  • the second movable module drive mechanism generate a magnetic drive force that swings around the other axis.
  • a movable module can be rock
  • the movable module is a photographing unit including an image sensor on the support.
  • the lens is included in a movable body supported on the support body so as to be movable in the optical axis direction.
  • the movable body is magnetically driven on the support body in the optical axis direction.
  • a configuration in which the lens driving mechanism is supported can be employed. With this configuration, even when the movable module has a lens driving mechanism, camera shake such as a mobile phone equipped with an optical unit can be corrected by the displacement of the movable module. There is no need to let them. Therefore, even when the movable module cannot be provided with a shake correction mechanism because the movable module is small, shake correction can be performed.
  • the movable module driving mechanism includes a movable module driving magnet held on one side of the movable module and the fixed body at each of two locations facing each other with the pivot portion interposed therebetween, It is preferable to include a movable module driving coil held on the other side.
  • the movable module driving magnet is held on the movable module side, and the movable module driving coil is held on the fixed body side. If comprised in this way, since the number of wiring with respect to a movable module may be small, a wiring structure can be simplified. Further, since the number of turns of the movable module driving coil can be increased, a large driving force can be exhibited. Furthermore, since the movable module driving magnet having a smaller mass among the movable module driving coil and the movable module driving magnet is provided on the movable module on the movable body side, the weight of the movable module can be reduced. . Therefore, since the movable module can be swung with a small force, the power consumption required for shake correction can be reduced. There is also an advantage of excellent response to hand shake.
  • a lens driving mechanism that magnetically drives the movable body in the optical axis direction is supported on the support, and the movable module driving mechanism is held on the movable module side.
  • it is.
  • the moving body holds a magnetic piece that generates a magnetic attraction force between the moving lens and the lens driving magnet at a position closer to the subject in the optical axis direction than the lens driving magnet.
  • the movable module can control the position of the moving body in the optical axis direction with high accuracy, and therefore there is no need to perform control for monitoring and feeding back the position of the lens in the optical axis direction with a sensor or the like.
  • the fixed body has a fixed cover that covers the movable module and the movable module drive mechanism on an outer peripheral side, and the movable module is driven when viewed from a direction orthogonal to the optical axis in the fixed cover. It is preferable that at least a portion located outside the magnet for use in the magnetic flux region of the movable module driving magnet is made of a magnetic material. If comprised in this way, the leakage magnetic flux to the outer side of a fixed cover from a movable module drive mechanism can be decreased.
  • the magnetic material acts as a magnetic collecting yoke
  • the interlinkage magnetic flux interlinking with the movable module driving coil is increased, so that a large thrust can be obtained when the movable module driving mechanism displaces the posture of the movable module. Accordingly, the response to vibration is excellent.
  • the fixed cover includes a first cover portion made of a nonmagnetic material and a second cover portion made of the magnetic material. Even if comprised in this way, the leakage magnetic flux from the movable module drive mechanism to the outer side of a fixed cover can be decreased. Further, since the magnetic material acts as a magnetic collecting yoke, the interlinkage magnetic flux interlinking with the movable module driving coil is increased, so that a large thrust can be obtained when the movable module driving mechanism displaces the posture of the movable module. Accordingly, the response to vibration is excellent. Furthermore, it is possible to reduce the influence of an external magnetic flux entering the shake correction magnetic drive mechanism and affecting the posture of the movable module. Furthermore, it is possible to easily realize a configuration in which the magnetic body does not exist at a location where the magnetic attractive force with the movable module driving coil becomes a load when the movable module is displaced.
  • the fixed body has a fixed cover that covers the outer periphery of the movable module and the movable module driving mechanism with a magnetic part, and the movable module is adjacent to the optical axis in the movable module driving magnet.
  • the module driving magnets preferably have different magnetic poles at positions adjacent to the optical axis. If comprised in this way, the magnetic flux which generate
  • the movable module includes a movable module side yoke holding the movable module driving magnet, and the movable module side yoke is bent to a position facing the outer surface of the movable module driving magnet. It is preferable that an extended coil-side magnetic collecting yoke portion is provided. If comprised in this way, since a movable module drive mechanism is pinched
  • a movable module in which a lens and an image pickup element located on the opposite side of the subject from the lens are supported on a support, and the movable module A fixed body that supports the movable module, a shake detection sensor that detects an inclination of the movable module, and a shake correction mechanism that corrects the shake by swinging the movable module on the fixed body based on a detection result of the shake detection sensor.
  • a flexible wiring member for an image sensor electrically connected to the image sensor is drawn from the movable module, and the shake correction mechanism is configured to capture the image with respect to the lens.
  • a swing support unit that swingably supports the movable module about a side where the element is positioned, and a side where the imaging element is positioned with respect to the lens. Characterized in that it comprises a shake correction magnetic drive mechanism for generating a magnetic force for rocking the heart, the.
  • the flexible wiring member for the image sensor that is electrically connected to the image sensor is drawn from the end of the movable module opposite to the subject side. Since the movable module is swung around the side where the image sensor is located (the end opposite to the subject side) with respect to the lens, the deformation of the flexible wiring member for the image sensor is extremely small. Therefore, the movable module can be swung quickly. In addition, since the elastic deformation of the flexible wiring member when the end of the movable module on the image sensor side is swung is extremely small, the shape restoring force of the flexible wiring member received by the movable module is also extremely small.
  • a magnetic drive mechanism is used as an actuator for shake correction.
  • the deformation of the flexible wiring member hardly affects the external force as an external force. Therefore, even if the movable module is oscillated by the magnetic drive, it can be driven properly. Therefore, camera shake correction with excellent responsiveness can be performed accurately.
  • the movable module includes a movable body supported on the support body so as to be movable in the optical axis direction with the lens, and the movable body between the movable body and the support body in the optical axis direction.
  • a configuration including a lens driving mechanism that performs magnetic driving can be employed.
  • the swing support part is a contacted part in which a support protrusion protruding from one side of the movable module and the fixed body toward the other side and a tip part of the support protrusion contact on the other side.
  • a pivot part provided with a part is preferred. According to such a structure, a movable module can be reliably supported by a simple structure so that rocking
  • the shake detection sensor is mounted on the movable module at a position opposite to the subject side with respect to the imaging device, and the shake detection sensor is separate from the flexible wiring member for the imaging device. It is preferable that the sensor flexible wiring member or the flexible wiring member integral with the imaging element flexible wiring member is electrically connected.
  • the shake correction magnetic drive mechanism is closed-loop controlled so that an integrated value of a detection result of the shake detection sensor becomes zero.
  • the shake detection sensor is disposed on the subject side with respect to the pivot portion and at a position overlapping the pivot portion in the optical axis direction. If comprised in this way, since the displacement to which direction of the movable module by camera shake etc. can be detected reliably, camera shake correction etc. can be performed reliably.
  • the shake detection sensor is electrically connected to the sensor flexible wiring member separate from the imaging element flexible wiring member, and the sensor flexible wiring member and the imaging
  • Each of the element flexible wiring members is a flexible substrate in which a wiring pattern is formed on a flexible insulating base material, and is folded in at least one place in the optical axis direction and has a strip-shaped narrow portion.
  • the movable module swings during shake correction such as camera shake
  • the deformation of the sensor flexible wiring member and the imaging element flexible wiring member is caused by the sensor flexible wiring member and It is absorbed by the bent portion of the flexible wiring member for the image sensor.
  • the bent portion is a strip-like narrow portion of the flexible wiring member for an image sensor and the flexible substrate, the bent portion can be bent with a small force and the shape restoring force after being bent is small. Therefore, the deformation of the flexible wiring member for sensor and the flexible wiring member for imaging device hardly affects the swing of the movable module. Therefore, the movable module can be properly swung, so that camera shake correction and the like can be reliably performed.
  • each of the strip-like narrow portions of the sensor flexible wiring member and the imaging element flexible wiring member is formed between the movable module and the fixed body by the pivot portion. It is preferable that the support protrusion is passed through the gap.
  • each of the sensor flexible wiring member and the imaging element flexible wiring member extend in parallel so as to sandwich the pivot portion therebetween.
  • produced between the movable module and the fixed body by formation of a pivot part can be used effectively as a drawing space of the flexible wiring member for sensors and the flexible wiring member for image sensors. .
  • the bent portion toward the camera shake detection sensor and the imaging element is around the support protrusion. It is preferable that the support protrusion is disposed at the center. If comprised in this way, the force which the flexible wiring member for sensors and the flexible wiring member for an image pick-up element exert on the movable module will be equal even if the movable module swings in any direction. Accordingly, since the movable module can be properly swung, it is possible to reliably perform hand shake correction and the like.
  • the flexible wiring member for a sensor and / or the flexible wiring member for an image pickup device include a bent portion to which a bending back preventing member is bonded.
  • the fixed body includes a substantially rectangular base that constitutes a part of the pivot portion at a position opposite to the subject side with respect to the movable module, and the base is relative to a bottom plate portion of the base. Only two side portions facing each other are provided with side plate portions standing toward the subject side, and the portion corresponding to the other two side portions of the bottom plate portion includes the flexible wiring member for sensors and the It is preferable that a notch is formed at a position overlapping the bent portion of the flexible wiring member for the image sensor. With this configuration, the strength of the base can be ensured by the side plate portion rising from the bottom plate portion of the base, and a bent portion is provided in the sensor flexible wiring member and the imaging element flexible wiring member. However, since a problem such as the bent portion being caught by the base does not occur, camera shake correction or the like can be reliably performed.
  • the support protrusion is formed on the bottom plate portion of the base
  • the movable module includes a sensor support substrate at a position facing the base on the object side, and the object side of the sensor support substrate It is possible to adopt a configuration in which the shake detection sensor is disposed on the surface of the sensor, and the surface of the sensor support substrate opposite to the subject side is the contacted portion with which the tip of the support protrusion contacts. it can.
  • the sensor flexible wiring member and the imaging element flexible wiring member each use a single-sided flexible substrate in which the wiring pattern is formed on one surface of the insulating base material.
  • a single-sided flexible board is less expensive than a double-sided board, and the force required for deformation and the shape recovery force generated when it is deformed are small. Therefore, camera shake correction can be performed reliably. From this point of view, only the part to be deformed may be configured as one side, and the flat part may be configured as a double-sided substrate. If deformation or the like is not a problem, a double-sided flexible board in which the wiring pattern is formed on both sides of the insulating base material may be used.
  • an urging means for urging the movable module toward the pivot portion is provided, and the urging means is coupled to the inner peripheral side coupling portion coupled to the movable module and the fixed body. It is preferable that it is what is called a gimbal spring provided with the outer peripheral side connection part and the several arm part extended from the said inner peripheral side connection part and connected with the said outer peripheral side connection part.
  • This configuration has the advantage that the space occupied by the biasing means can be reduced.
  • the gimbal spring is connected to the movable module on the inner peripheral side connecting part, the outer peripheral side connecting part connected to the fixed body, and the inner peripheral side connecting part extending in the same circumferential direction from the outer peripheral side.
  • the gimbal spring When the gimbal spring is provided with a plurality of arms connected to the side connecting part, the gimbal spring exerts a substantially uniform biasing force in all directions, so that the posture of the movable module is stable and for shake correction Control of the magnetic drive mechanism is extremely easy. Moreover, since the arm part is extended in the same direction of the circumferential direction, an arm part can be extended long. Therefore, the urging means exhibits an urging force with high linearity over the entire movable range of the movable module, so that it is possible to surely correct camera shake and the like without complicating control of the shake correction magnetic drive mechanism. Can do.
  • the gimbal spring may be in a deformed state that generates a biasing force that biases the movable module toward the pivot portion even during a neutral period in which the vibration correction magnetic drive mechanism stops driving. preferable. If comprised in this way, the state in which the movable module is supported by the pivot part can be maintained reliably.
  • a biasing means for biasing the movable module toward the pivot portion biases the movable module toward the pivot portion by a magnetic action.
  • a spring member that mechanically biases the movable module toward the pivot portion and the spring member is coupled to the inner peripheral side coupling portion coupled to the movable module and the fixed body.
  • the gimbal spring includes an outer peripheral side connecting portion and a plurality of arm portions extending from the inner peripheral side connecting portion and connected to the outer peripheral side connecting portion. If comprised in this way, the state in which the movable module is supported by the pivot part can be maintained reliably.
  • the movable module is biased toward the pivot portion only by the magnetic spring, and the gimbal spring is not deformed so as not to generate a biasing force. It can be.
  • the gimbal spring is deformed. That is, the gimbal spring remains flat during the period when the movable module is not swinging. For this reason, since the part in which the force applied to the gimbal spring and the amount of deformation of the gimbal spring have linearity can be used effectively, the movable module can be properly swung, and the camera shake and the like can be reliably corrected. be able to.
  • a vibration absorbing material is fixed to at least a part of the arm portion. If comprised in this way, when a movable module is rock
  • the shake detection sensor is mounted on the movable module at a position opposite to the subject side with respect to the imaging element, and the shake is detected.
  • the detection sensor is electrically connected to a flexible wiring member for the sensor separate from the flexible wiring member for the imaging element, or a flexible wiring member integral with the flexible wiring member for the imaging element.
  • the configuration can be adopted.
  • the shake correction magnetic drive mechanism is controlled in a closed loop so that an integral value of a detection result of the shake detection sensor becomes zero.
  • the shake correction magnetic drive mechanism generates a magnetic force that causes the movable module to swing in the same direction in pairs at two opposing positions with the swing center of the movable module in between. It is preferable.
  • the drive capability is stable. That is, when the distance from the swing center of the movable module of the movable module for shake correction shifts on the one hand when the driving force is weakened, the other drive power is shifted on the other magnetic correction mechanism for shake correction. . Therefore, according to the present invention, camera shake or the like can be corrected with high accuracy.
  • the shake correction magnetic drive mechanism when three directions orthogonal to each other are defined as an X-axis, a Y-axis, and a Z-axis, respectively, and a direction parallel to the optical axis is defined as a Z-axis,
  • the shake correction magnetic drive mechanism it is preferable that two sets of shake correction magnetic drive mechanisms that generate a magnetic drive force that swings around two of the X, Y, and Z axes are configured. . If comprised in this way, since a movable module can be rock
  • the two sets of the shake correction magnetic drive mechanisms swing the movable module around the X axis in pairs at two positions facing each other with the swing center of the movable module in between in the Y-axis direction.
  • the movable module is swung around the Y axis in pairs at two positions facing the first camera shake correcting magnetic drive mechanism for generating a magnetic driving force and sandwiching the swing center of the movable module in the X-axis direction.
  • a second camera shake correction magnetic drive mechanism that generates a magnetic drive force to be moved, and the first camera shake correction magnetic drive mechanism is disposed at each of two locations located in the Y-axis direction on the movable module.
  • the drive mechanism is opposed to each of the second camera shake correction magnets disposed at each of the two positions on the movable module in the X axis direction and each of the two camera shake correction magnets at the two locations in the X axis direction. It is preferable to include a second hand shake correction coil. If comprised in this way, since the magnet was provided in the movable module and the coil was provided in the fixed body, since the number of wiring with respect to a movable module may be small, a wiring structure can be simplified.
  • the first camera shake correction coil and the second camera shake correction coil are arranged on the fixed body side, the number of turns of the coil can be increased, so that a large driving force can be exhibited. Furthermore, since the smaller magnet of the coil and the magnet is provided on the movable module, the weight of the movable module can be reduced. Therefore, since the movable module can be swung with a small force, power consumption required for camera shake correction can be reduced. There is also an advantage of excellent response to hand shake.
  • the first camera shake correction coil has a side portion extending in the X-axis direction at a position shifted in the Z-axis direction from a position facing the first camera shake correction magnet in the Y-axis direction. Is the effective side, and the second camera shake correction coil extends in the Y-axis direction at a position shifted in the Z-axis direction from a position facing the second camera shake correction magnet in the X-axis direction.
  • a configuration in which the side portion is an effective side can be employed.
  • the first camera shake correction magnet and the second camera shake correction magnet are magnetized to different poles on the outer surface side
  • the first camera shake correction coil is a side portion extending in the X-axis direction.
  • the side portion extending in the Z-axis direction is also an effective side
  • the second camera shake correction coil is provided in the Z-axis direction in addition to the side portion extending in the Y-axis direction. It is preferable that the extending side portion is also an effective side.
  • the movable module can be swung quickly and reliably. Therefore, it is possible to reduce power consumption of a portable device equipped with an imaging optical device, and to perform camera shake correction quickly and reliably.
  • the first camera shake correction magnet and the second camera shake correction magnet are magnetized with different outer surfaces in the Z-axis direction
  • the first camera shake correction coil is the first camera shake correction coil.
  • a side portion extending in the X-axis direction so as to face each portion magnetized on different poles of the hand-shake correction magnet in the Y-axis direction is an effective side
  • the second hand-shake correction coil The side portion extending in the Y-axis direction so as to oppose each portion magnetized to different poles of the second camera shake correction magnet in the X-axis direction is an effective side. Is preferred.
  • the magnetic driving force acting on the movable module is a force in a direction that causes the movable module to swing in the optical axis direction. Therefore, even when the swing center (position of the pivot portion) of the movable module and the location where the force acts on the movable module are close to each other in the optical axis direction, the magnetic driving force is effective for the force that the movable module swings. Can be used. Therefore, since a large torque can be obtained with a small power consumption, the movable module can be swung quickly and reliably. Therefore, it is possible to reduce power consumption of a portable device equipped with an imaging optical device, and to perform camera shake correction quickly and reliably.
  • the first camera shake correction coil and the second camera shake correction coil are held on each surface of a rectangular tube-shaped coil holder disposed outside the movable module.
  • the first camera shake correction coil and the second camera shake correction coil are held in the coil holder having a high strength. Therefore, the first camera shake correction coil and the second camera shake correction coil can be realized.
  • High accuracy can be obtained in the positional relationship between the coil and the first camera shake correction magnet and the second camera shake correction magnet. Therefore, since a large torque can be obtained with a small power consumption, the movable module can be swung quickly and reliably. Therefore, it is possible to reduce power consumption of a portable device equipped with an imaging optical device, and to perform camera shake correction quickly and reliably.
  • a contact portion is disposed each time the movable module and the fixed body are brought into contact with each other before a collision occurs.
  • an attached module having a shutter mechanism is fixed to the fixed body on the subject side with respect to the movable module. If comprised in this way, compared with the case where an attachment module is mounted in a movable module, the weight reduction of a movable module can be achieved. Accordingly, the movable module can be swung quickly and reliably, and the power consumption of a portable device equipped with the imaging optical device can be reduced.
  • a movable module driving mechanism for swinging the movable module is provided between the movable module and the fixed body, and the movable module is swingably supported with respect to the fixed body via the pivot portion. Therefore, even when camera shake or the like occurs when shooting with a camera-equipped mobile phone equipped with an optical unit, the camera shake or the like can be corrected by the swing of the movable module. Therefore, since it is not necessary to provide a shake correction mechanism in the movable module, the shake correction can be performed even when the shake correction mechanism cannot be provided in the movable module because the movable module is small. In the present invention, since the magnetic force generated by the movable module drive mechanism or the urging force exerted by the urging means is stable, shake such as camera shake can be accurately corrected.
  • the flexible wiring member for the image sensor that is electrically connected to the image sensor is drawn out from the end of the movable module opposite to the subject side.
  • the deformation of the flexible wiring member for the image sensor is extremely small. . Therefore, the movable module can be swung quickly.
  • the shape restoring force of the flexible wiring member received by the movable module is also extremely small.
  • the movable module can be properly swung without being affected by the deformation of the flexible wiring member, so that shake correction such as camera shake can be reliably performed.
  • a magnetic drive mechanism is used as an actuator for shake correction.
  • the deformation of the flexible wiring member hardly affects the external force as an external force. Therefore, even if the movable module is oscillated by the magnetic drive, it can be driven properly. Therefore, camera shake correction with excellent responsiveness can be performed accurately.
  • (A), (b) is the external view and the disassembled perspective view which respectively saw the optical unit with a shake correction function concerning Embodiment 1 of this invention from diagonally upward on the to-be-photographed object side. It is a longitudinal cross-sectional view when the optical unit with a shake correction function according to the first embodiment of the present invention is cut in parallel to the optical axis.
  • (A), (b) is the external view which looked at the imaging
  • FIGS. 7A and 7B are an external view and an exploded perspective view of an optical unit with a shake correction function according to another embodiment of the present invention viewed obliquely from above on the subject side, respectively. It is explanatory drawing which shows the magnetic flux leakage countermeasure with respect to the optical unit with a shake correction function to which this invention is applied.
  • FIG. 9A and 9B are a longitudinal sectional view when the optical apparatus for photography to which the present invention is applied is cut at a position corresponding to the line A1-A1 ′ in FIG. 9A, and FIG.
  • (A), (b), (c) are each an explanatory view of the periphery of the pivot portion of the optical device for photography to which the present invention is applied, an explanatory view of an overlapping portion of the flexible substrate for the image sensor and the sensor, and It is explanatory drawing of the state which notched the upper part.
  • (A), (b), (c) is a development view of the imaging element flexible substrate used as the main substrate in the imaging optical device to which the present invention is applied, and an explanation of the folded state of the imaging element flexible substrate. It is explanatory drawing of the state which notched the figure and its upper part.
  • (A), (b), (c) is a development view of a flexible substrate for sensors used as a sub-substrate in the photographing optical device to which the present invention is applied, and an explanatory view of the folded state of the flexible substrate for sensors, It is explanatory drawing of the state which notched the upper part. It is explanatory drawing of the bending part of a flexible substrate in the optical device for imaging
  • a configuration for preventing camera shake of the photographing unit is illustrated as a movable module.
  • three directions orthogonal to each other are defined as an X axis, a Y axis, and a Z axis, respectively, and a direction along the optical axis L (lens optical axis) is defined as a Z axis.
  • rotation around the X axis corresponds to so-called pitching (pitch)
  • rotation around the Y axis corresponds to so-called yawing (roll)
  • Z axis The rotation around corresponds to so-called rolling.
  • FIGS. 1A and 1B are an external view and an exploded perspective view, respectively, of the optical unit with a shake correction function according to Embodiment 1 of the present invention viewed obliquely from above on the subject side.
  • FIG. 2 is a longitudinal sectional view of the optical unit with shake correcting function according to Embodiment 1 of the present invention cut in parallel to the optical axis.
  • the optical unit 200 with a shake correction function shown in FIGS. 1A, 1B, and 2 is a thin camera used for a mobile phone with a camera, and has a substantially rectangular parallelepiped shape as a whole.
  • the optical unit 200 with shake correction function includes a rectangular plate-shaped base 220 and a box-shaped fixed cover 230 that covers the base 220 and is fixed by the base 220 and the fixed cover 230.
  • a body 210 is constructed.
  • a fixed cover 230 provided with a top plate portion 234 is used.
  • a photographing unit 1 movable module
  • a shake correction mechanism for swinging the photographing unit 1 to correct shakes such as camera shake. It is configured.
  • FIGS. 3A and 3B are an external view and an exploded perspective view, respectively, of the photographing unit 1 used in the optical unit 200 with a shake correction function according to Embodiment 1 of the present invention when viewed obliquely from above.
  • FIG. 4 is an explanatory diagram schematically showing the operation of the photographing unit 1 shown in FIG.
  • the left half of FIG. 4 shows a view when the moving body 3 is at a position at infinity (normal shooting position), and the right half of FIG. 4 shows the moving body 3 at the macro position (close-up shooting position). The figure when it exists in is shown.
  • the photographing unit 1 includes, for example, three lenses 121 along the direction of the optical axis L and the A direction (front side) approaching the subject (object side). , And a direction opposite to the subject (image sensor side / image side) in the B direction (rear side), and has a substantially rectangular parallelepiped shape.
  • the photographing unit 1 generally includes a moving body 3 that holds three lenses 121 and a fixed aperture inside, a lens driving mechanism 5 that moves the moving body 3 along the optical axis direction, a lens driving mechanism 5 and a movement. And a support body 2 on which a body 3 and the like are mounted.
  • the moving body 3 includes a cylindrical lens holder 12 that holds a lens 121 and a fixed diaphragm, and a coil holder 13 that holds lens driving coils 30s and 30t, which will be described later, on the outer peripheral side surface.
  • the support 2 includes a rectangular plate-shaped image sensor holder 19 that positions the image sensor 155 on the opposite side to the subject side, a box-shaped case 18 that covers the image sensor holder 19 on the subject side, and an inner side of the case 18.
  • a hole 190 that guides incident light to the image sensor 155 is formed in the center of the image sensor holder 19.
  • the support 2 includes a substrate 154 on which the image sensor 155 is mounted, and the substrate 154 is fixed to the lower surface of the image sensor holder 19.
  • a plate 151 is fixed to the lower surface of the substrate 154.
  • the case 18 is made of a ferromagnetic plate such as a steel plate and also functions as a yoke.
  • the case 18 constitutes a linkage magnetic field generator 4 that generates a linkage magnetic field in the lens drive coils 30 s and 30 t held by the coil holder 13 together with a lens drive magnet 17 described later.
  • the interlinkage magnetic field generator 4 constitutes the lens driving mechanism 5 together with the lens driving coils 30 s and 30 t wound around the outer peripheral surface of the coil holder 13.
  • the support body 2 and the moving body 3 are connected via metal spring members 14s and 14t.
  • the spring members 14s and 14t have the same basic configuration, and an outer peripheral side connecting portion 14a held on the support body 2 side, an annular inner peripheral side connecting portion 14b held on the moving body 3 side, An arm-shaped leaf spring portion 14c that connects the outer peripheral side connecting portion 14a and the inner peripheral side connecting portion 14b is provided.
  • the imaging element side spring member 14 s holds the outer peripheral side coupling portion 14 a on the imaging element holder 19, and the inner circumferential side coupling portion 14 b is the imaging element side end surface of the coil holder 13 of the moving body 3. It is connected to.
  • the outer peripheral side connecting portion 14 a is held by the spacer 11, and the inner peripheral side connecting portion 14 b is connected to the subject side end surface of the coil holder 13 of the moving body 3.
  • the moving body 3 is supported by the support body 2 so as to be movable in the direction of the optical axis L via the spring members 14s and 14t.
  • the spring members 14s and 14t are both made of nonmagnetic metal such as beryllium copper or nonmagnetic SUS steel, and are formed by pressing a thin plate having a predetermined thickness or etching using a photolithography technique. It is.
  • the spring member 14s is divided into two spring pieces 14e and 14f, and the ends of the lens driving coils 30s and 30t are connected to the spring pieces 14e and 14f, respectively. Further, in the spring member 14s, terminals 14d are formed on the spring pieces 14e and 14f, respectively, and the spring members 14s (spring pieces 14e and 14f) also function as power supply members for the lens driving coils 30s and 30t.
  • a ring-shaped magnetic piece 61 is held on the subject-side end surface of the coil holder 13, and the position of the magnetic piece 61 is a position from the subject side with respect to the lens driving magnet 17.
  • the magnetic piece 61 applies an urging force in the direction of the optical axis L to the moving body 3 by an attractive force acting between the magnetic piece 61 and the lens driving magnet 17. For this reason, since it is possible to prevent the moving body 3 from being displaced by its own weight when no current is applied, it is possible to keep the moving body 3 in a desired posture and to further improve the impact resistance.
  • the magnetic piece 61 acts as a kind of yoke, and can reduce leakage magnetic flux from a magnetic path formed between the lens driving magnet 17 and the lens driving coils 30s and 30t.
  • a rod-shaped or spherical magnetic body may be used as the magnetic piece 61.
  • the magnetic piece 61 is formed in a ring shape, there is an effect that the magnetic attractive force attracted to the lens driving magnet 17 when the lens holder 12 moves in the optical axis direction is isotropic.
  • the magnetic piece 61 is disposed on the subject-side end surface of the lens holder 12.
  • the magnetic piece 61 When the magnetic piece 61 is not energized (origin position), the magnetic piece 61 is attracted to the lens driving magnet 17 to bring the lens holder 12 to the imaging element side. Can stand still.
  • the magnetic piece 61 held on the end surface of the lens holder 12 on the subject side moves to a position farther away from the lens driving magnet 17, thereby pushing the lens holder 12 against the image sensor side. The force does not work. Therefore, the lens holder 12 can be moved in the optical axis direction with a small amount of electric power.
  • the lens 121 when viewed from the direction of the optical axis L, the lens 121 is circular, but the case 18 used for the support 2 is rectangular box-shaped. Accordingly, the case 18 includes a rectangular tube-shaped body portion 184, and an upper plate portion 185 in which an incident window 120 is formed on the upper surface side of the rectangular tube-shaped body portion 184.
  • the rectangular tube body 184 has a rectangular tube shape, and includes four side plate portions 181 at each position corresponding to a square side when viewed from the direction of the optical axis L.
  • a lens driving magnet 17 is fixed to the inner surface of each of the four side plate portions 181.
  • Each of the lens driving magnets 17 is made of a rectangular flat permanent magnet.
  • Each of the four lens driving magnets 17 is divided into two in the direction of the optical axis L, and in any case, the inner surface and the outer surface are magnetized to different poles.
  • the inner surface is magnetized to the N pole in the upper half
  • the outer surface is magnetized to the S pole
  • the inner surface is magnetized to the S pole in the lower half.
  • the pole is magnetized.
  • the arrangement of the magnetic poles is the same between the adjacent permanent magnets, and the flux linkage lines for the coil can be generated efficiently.
  • the moving body 3 includes a cylindrical lens holder 12 that holds the lens 121 and the like, and a coil holder 13 in which coils (lens driving coils 30s and 30t) are wound around the outer peripheral side surface.
  • the coil holder 13 constitutes a side wall portion of the moving body 3.
  • the upper half is a large-diameter cylindrical portion 12b having a large diameter
  • the lower half is a small-diameter cylindrical portion 12a having a smaller diameter than the large-diameter cylindrical portion 12b.
  • the coil holder 13 includes a circular lens holder housing hole 130 for holding the lens holder 12 inside.
  • the inner peripheral shape when the coil holder 13 is viewed from the direction of the optical axis L, the inner peripheral shape is circular, but the outer peripheral side surface 131 that defines the outer peripheral shape of the coil holder 13 is a quadrangle, which corresponds to four sides of the quadrangle. Each surface is provided with four surfaces 132.
  • rib-like protrusions 131 a, 131 b, 131 c are formed at both ends and the center position in the direction of the optical axis L over the entire periphery, and are formed at the image sensor side end.
  • the concave portion sandwiched between the rib-shaped protrusion 131a and the rib-shaped protrusion 131b formed at the center position is a first coil winding section 132a, and the rib-shaped protrusion 131c formed at the subject side end and the center position A recess sandwiched between the rib-shaped protrusions 131b formed on the second coil winding portion 132b.
  • each of the four surfaces 132 has a rectangular shape formed by removing the first coil winding portion 132 a and the second coil winding portion 132 b so as to avoid a square corner portion.
  • Through holes are formed, and the through holes 133a, 133b penetrate the side wall of the coil holder 13 in the inner and outer directions.
  • the through holes 133 a and 133 b of the coil holder 13 constitute a hollow portion that is recessed inward on the outer peripheral side surface 131 of the moving body 3.
  • the through holes 133a and 133b have a circumferential length dimension (a square side dimension) of each surface 132 at a central portion sandwiched between adjacent corner portions on the outer peripheral side surface 131 of the coil holder 13.
  • the size is about 1/3.
  • a thick column portion 134 extending in the direction of the optical axis L is formed in the corner portion of the coil holder 13 with the same thickness.
  • the through holes 133a and 133b are formed over the entire width direction (direction of the optical axis L) of the first coil winding portion 132a and the second coil winding portion 132b, but the rib-like protrusions 131a, 131b, and 131c are formed. It is not formed to take. Therefore, the through holes 133a and 133b (thinned portions) are formed only in the middle part in the direction of the optical axis L of the coil holder 13 (moving body 3), and are formed at positions avoiding both ends.
  • the lens driving coil 30s is wound around the first coil winding portion 132a, and the lens driving coil 30t is wound around the second coil winding portion 132b. Yes.
  • the lens driving coils 30s and 30t are both wound in a rectangular tube shape.
  • Each of the four lens driving magnets 17 is divided into two in the optical axis direction, and in each case, the inner surface and the outer surface are magnetized to different poles, so that the two lens driving coils 30s and 30t The winding direction is opposite.
  • the through holes 133a and 133b have the same length in the direction of the optical axis L as the length of the first coil winding portion 132a and the second coil winding portion 132b in the direction of the optical axis L.
  • the first coil winding portion 132a and the second coil winding portion 132b are formed over the whole, but the lens driving coils 30s and 30t are formed of the first coil winding portion 132a and the second coil. It is wound over the entire winding part 132b and passes through the entire formation region of the through holes 133a, 133b. For this reason, the through holes 133a and 133b are closed at the outside by the lens driving coils 30s and 30t.
  • the through hole 133b located on the subject side in the direction of the optical axis L among the through holes 133a and 133b is opened on the inside.
  • the portion to be closed is closed by a large-diameter cylindrical portion 12b formed in the upper half portion of the lens holder 12, while the through hole 133a located on the image sensor side in the optical axis direction is formed in the lower half portion of the lens holder 12.
  • the formed small diameter cylindrical portions 12a are opposed to each other.
  • the coil holder 13 configured in this way is arranged inside the case 18.
  • the four side portions of the lens driving coils 30 s and 30 t face the lens driving magnet 17 fixed to the inner surface of the rectangular tube-shaped body portion 184 of the case 18.
  • the weight of the moving body 3 is reduced and the thrust of the moving body 3 is increased.
  • the through holes 133a and 133b are formed on the surface 132 that avoids the corners of the outer peripheral side surface 131 of the coil holder 13, the wall portions extending in the direction of the optical axis L are formed at the corners of the coil holder 13.
  • the portion is formed as a post portion 134. For this reason, even when the weight of the moving body 3 is reduced by forming the through holes 133a and 133b, the moving body 3 has sufficient strength.
  • the through holes 133a and 133b are formed in the corners of the coil holder 13, when the lens driving coils 30s and 30t are wound, the shape of the lens driving coils 30s and 30t is broken at the corners, and the lens driving coils are formed.
  • 30s and 30t cannot be wound into a quadrangle, in this embodiment, since the through holes 133a and 133b are formed in the surface 132 that avoids the corners, the lens driving coil 30s and the through holes 133a and 133b pass through the through holes 133a and 133b. Even when 30 t is wound, the lens driving coils 30 s and 30 t can be wound in a square shape.
  • the through holes 133a and 133b are formed in the central portion of the polygonal side, the thick pillar portions 134 extending in the direction of the optical axis L are equivalent to the plurality of corner portions of the polygon. Therefore, the weight balance and strength balance in the circumferential direction of the movable body can be suitably ensured. Moreover, since the through holes 133a and 133b are formed in the middle of the coil holder 13 in the direction of the optical axis L, avoiding both ends, the strength of both ends of the coil holder 13 can be prevented from decreasing.
  • the moving body 3 is normally located on the image sensor side. In such a state, when a current in a predetermined direction is passed through the lens driving coils 30s and 30t, the lens driving coil 30s and 30t receive an upward (front) electromagnetic force, respectively. Accordingly, the moving body 3 to which the lens driving coils 30s and 30t are fixed starts to move toward the subject side (front side). At this time, an elastic force that restricts the movement of the moving body 3 is generated between the spring member 14 t and the front end of the moving body 3 and between the spring member 14 s and the rear end of the moving body 3.
  • the moving body 3 stops. At this time, the moving body 3 can be stopped at a desired position by adjusting the amount of current flowing through the lens driving coils 30 s and 30 t according to the elastic force acting on the moving body 3 by the spring members 14 s and 14 t. .
  • the movement amount of the moving body 3 and the lens driving lens are used.
  • Linearity between the currents flowing through the coils 30s and 30t can be improved.
  • the two spring members 14s and 14t are used, a large balance force is applied in the direction of the optical axis L when the moving body 3 stops, and centrifugal force and impact are applied in the direction of the optical axis L. Even if another force such as a force is applied, the moving body 3 can be stopped more stably.
  • the moving body 3 in order to stop the moving body 3, the moving body 3 is not stopped by colliding with a collision material (buffer material) or the like, but is stopped using a balance between electromagnetic force and elastic force. Therefore, it is possible to prevent the occurrence of a collision sound.
  • a collision material buffer material
  • the case 18 has a box shape having an upper plate portion 185 on the upper surface of the rectangular tube-shaped body portion 184, and therefore is configured between the lens driving magnet 17 and the lens driving coils 30s and 30t.
  • the leakage magnetic flux from the magnetic path can be reduced. Therefore, it is possible to improve the thrust between the amount of movement of the coil holder 13 and the current flowing through the lens driving coils 30s and 30t. Further, when the photographing unit 1 is assembled to a mobile phone, the magnetic flux leakage to the surrounding electronic components can be reduced.
  • the lens 121 is circular, but the lens driving coils 30 s and 30 t are square regardless of the lens shape, and the lens driving magnet 17 has a rectangular inner peripheral surface in the support 2. It is a flat permanent magnet fixed to each of a plurality of inner surfaces corresponding to the sides of the rectangular tube-shaped body 184 of the case 18 formed in the above. For this reason, even when there is not enough space on the outer peripheral side of the moving body 3 between the moving body 3 and the support body 2, the facing area between the lens driving coils 30s and 30t and the lens driving magnet 17 is large. , Can exert a sufficient thrust.
  • the outer peripheral side surface (the outer peripheral side surface 131 of the coil holder 13) of the moving body 3 is the same square as the lens driving coils 30s and 30t.
  • the lens driving coils 30s and 30t can be wound into a quadrangle simply by winding the lens driving coils 30s and 30t around the outer peripheral surface (the outer peripheral side surface 131 of the coil holder 13).
  • the lens holder 12 is housed and mounted in the lens holder housing hole 130 after winding the lens driving coils 30s and 30t around the coil holder 13.
  • the configuration can be adopted, and when the lens driving coils 30s and 30t are wound, a situation such as damage to the lens 121 can be avoided.
  • the moving body 3 of the photographing unit 1 holds a magnetic piece 61 that generates a magnetic attractive force between the lens driving magnet 17 and the lens driving magnet 17 at a position closer to the subject in the optical axis direction than the lens driving magnet 17.
  • the position of the moving body 3 in the optical axis direction can be controlled with high accuracy. Therefore, the photographing unit 1 does not need to perform control for monitoring and feeding back the position of the lens 121 in the optical axis direction with a sensor or the like.
  • the position of the lens 121 in the optical axis direction is monitored and fed back by a sensor or the like. You may do it.
  • drum 184 and the lens drive coils 30s and 30t were square
  • a substantially square may be sufficient. That is, the rectangular cylindrical body 184 and the lens driving coils 30s and 30t may have a shape in which square corners are rounded, and further, the square corners are linearly shaved to form, for example, an octagon. However, a configuration in which a portion cut at a corner portion is short and has a shape similar to a quadrangle may be used.
  • the rectangular tubular body 184 and the lens driving coils 30s and 30t are rectangular, but the shape of the rectangular tubular body and the coil is not limited to a square as long as it is a polygon.
  • the lens driving magnet 17 may be a hexagonal shape, an octagonal shape, or the like.
  • the lens driving magnet 17 is fixed to all surfaces of the rectangular cylindrical body portion of the yoke, and every other position in the circumferential direction. You may employ
  • the outer shape of the coil holder 13 is also polygonal.
  • the coil holder 13 is cylindrical, and a lens wound in a polygon using protrusions formed on the outer peripheral side surface thereof.
  • a structure in which the driving coils 30 s and 30 t are fixed to the outer peripheral side surface of the coil holder 13 may be adopted.
  • the moving body 3 is divided into the lens holder 12 and the coil holder 13, and the body made of the concave portion or the hole formed by removing a part of the side wall portion of the moving body 3 with respect to the body portion of the lens holder 12.
  • the through holes 133a and 133b constituting the punched portion are formed, but a recess or a hole is formed by removing a part of the body portion of the lens holder 12, and the recess or the hole is used as a thinned portion. May be.
  • the moving body 3 is divided into the lens holder 12 and the coil holder 13.
  • the moving body may be configured as one component. If the concave portion or the hole formed by removing a part thereof is formed as the thinned portion, the weight of the moving body 3 can be reduced. In this case, it is also preferable to adopt a configuration such as avoiding the corners when the through holes 133a and 133b are formed in the lens holder 12 in the above-described form, as for the formation positions of the lightening portions in this case.
  • the base 220 protrudes in a hemispherical shape at the center of the upper surface.
  • a pivot portion 225 is formed as a swing support portion. The upper end portion of the pivot portion 225 is in contact with the center of the plate 151 of the photographing unit 1 and is located on the optical axis L. Therefore, the photographing unit 1 can be swung by the pivot portion 225 in any of the X-axis direction, the Y-axis direction, and the direction sandwiched between the X-axis direction and the Y-axis direction.
  • the pivot portion 225 may be formed in an axial shape, but if it is a hemispherical projection, the dimension of the optical unit 200 in the direction of the optical axis L can be shortened. Further, the portion of the plate 151 with which the pivot portion 225 abuts may be a concave portion that is recessed in a conical shape. Further, the pivot portion may be formed on the photographing unit 1 side.
  • a gimbal spring having a rectangular planar shape which is a spring member as a biasing unit that biases the photographing unit 1 toward the pivot portion 225 between the base 220 and the plate 151 of the photographing unit 1.
  • the gimbal spring 280 is made of metal such as phosphor bronze, beryllium copper, non-magnetic SUS steel, or the like, and is formed by pressing a thin plate having a predetermined thickness or etching using a photolithography technique.
  • the gimbal spring 280 is connected to a rectangular frame-shaped inner peripheral side connecting portion 281 connected to the lower surface of the plate 151 of the photographing unit 1 and a receiving portion 226 that protrudes upward at each corner portion of the base 220 of the fixed body 210.
  • the inner peripheral side connecting portion 281 and the outer peripheral side connecting portion 285 are configured such that the sides are parallel to each other.
  • each of the four arm portions 287 is connected to the inner peripheral side connecting portion 281 in the vicinity of one end of the sides of the inner peripheral side connecting portion 281, and the inner peripheral side connecting portion 281. It extends in parallel to the side part from the connecting portion with the side portion toward the other end portion of the inner peripheral side connecting portion 281 and is connected to the outer peripheral side connecting portion 285.
  • the inner peripheral side connecting portion 281 and the outer peripheral side connecting portion 285 have a square planar shape
  • the four arm portions 287 have the same shape and size as each other and are equiangular around the optical axis.
  • the structure is arranged at intervals. For this reason, all of the four arm portions 287 are rotationally symmetric at 90 degrees, 180 degrees, and 270 degrees.
  • a shake correction shooting unit (movable module) drive mechanism that generates a magnetic force that swings the shooting unit 1 with the pivot portion 225 as a fulcrum, it is provided between the shooting unit 1 and the fixed body 210.
  • the first photographing unit (movable module) drive mechanism 250x that swings the photographing unit 1 around the X axis with the pivot 225 as a fulcrum, and the photographing unit 1 swings around the Y axis with the pivot 225 as a fulcrum.
  • the second photographing unit (movable module) driving mechanism 250y is configured, and the configuration of the first photographing unit driving mechanism 250x and the second photographing unit driving mechanism 250y will be described below.
  • a rectangular tubular body 164 of the yoke 16 is fixed to the outer peripheral surface of the support 2 (case 18).
  • a flange portion 166 is formed at the subject side end portion of the body portion 164 so as to spread outward.
  • an end portion of the body portion 164 on the image sensor 155 side of the yoke 16 is bent slightly inward, and a rectangular frame-shaped magnetic plate constituting a part of the yoke 16 is formed on the lower surface of the bent portion 167. 168 is fixed.
  • the cover portion 150 that surrounds the movable body 3 on the outer peripheral side is formed by the rectangular cylindrical body portion 184 of the case 18 and the body portion 164 of the yoke 16, and the four inner peripheral side surfaces (cases) of the cover portion 150 are formed.
  • a lens driving magnet 17 is held on each of the 18 square cylindrical body portions 184.
  • the first photographing unit drive mechanism 250x is formed on each of the two outer peripheral side surfaces facing each other in the Y-axis direction among the four outer peripheral side surfaces (the outer peripheral side surface of the body portion 164 of the yoke 16).
  • a rectangular plate-shaped imaging unit (movable module) drive magnet 240x is held, and each of the other two outer peripheral surfaces facing each other in the X-axis direction has a rectangular plate-shaped configuration that constitutes the second imaging unit drive mechanism 250y.
  • An imaging unit (movable module) drive magnet 240y is held.
  • each of the photographing unit driving magnets 240x is a rectangular flat permanent magnet.
  • the inner surface and the outer surface are magnetized to different poles.
  • the outer surface side is magnetized to the N pole and the inner surface side is magnetized to the S pole.
  • the magnetizing direction of the imaging unit driving magnet 240x and the imaging unit driving magnet 240y is not limited to the above pattern.
  • the opposing magnets have N poles on the inner surface side (S surfaces on the outer surface side).
  • the inner surface of the other magnet may be S poles (the inner surfaces are N poles).
  • the two coil holding members 260 are formed on the four inner peripheral side surfaces of the rectangular tubular body 235 of the fixed cover 230 in a state where the projecting portion 262 on the lower end side is fitted in the notch 223 formed on the side portion of the base 220. It is fixed.
  • the coil holding member 260 is made of a nonmagnetic material.
  • an imaging unit (movable module) driving coil 230x wound in a rectangular tube shape is provided.
  • the photographing unit driving coil 230x is opposed to the photographing unit driving magnet 240x in the inner and outer directions. Further, the outer end portion of the imaging unit driving magnet 240x is in an inside of the imaging unit driving coil 230x, and the imaging unit driving magnet 240x is in each side of the imaging unit driving coil 230x. A magnetic field interlinking from the inside to the outside of the imaging unit driving coil 230x is formed.
  • the photographing unit 1 is paired at two positions facing each other with the pivot portion 225 interposed therebetween in the Y-axis direction by the photographing unit driving coil 230x and the photographing unit driving magnet 240x.
  • a first imaging unit (movable module) drive mechanism 250x that swings around is configured, and in the first imaging unit drive mechanism 250x, the two imaging unit drive coils 230x cause the imaging unit 1 to move when energized.
  • the wires are connected so as to generate a magnetic driving force in the same direction around the X axis.
  • the two first photographing unit driving mechanisms 250x push-pull that applies a moment in the same direction around the X axis passing through the pivot portion 225 to the photographing unit 1 when the two photographing unit driving coils 230x are energized. It has a configuration. For example, when one of the two first imaging unit driving mechanisms 250x applies a moment indicated by an arrow A1 in FIG. 2 to the imaging unit 1, the other applies a moment indicated by an arrow A2 in FIG. . In the two first imaging unit drive mechanisms 250x, depending on the connection method of the two imaging unit driving coils 230x, the magnetization directions of the two imaging unit driving magnets 240x are different, and the two first imaging units are driven.
  • the drive mechanism 250x may have a push-pull configuration.
  • the photographing unit driving coil 230y wound in a rectangular tube shape is held on the inner surfaces of the two coil holding members 260 facing each other in the X-axis direction.
  • the photographing unit driving coil 230y faces the photographing unit driving magnet 240y in the inner and outer directions.
  • the outer end of the imaging unit driving magnet 240y is in the inside of the imaging unit driving coil 230y, and the imaging unit driving magnet 240y is in relation to each side of the imaging unit driving coil 230y.
  • a magnetic field linking from the inner side to the outer side of the imaging unit driving coil 230y is formed.
  • the photographing unit 1 is paired at two positions facing each other with the pivot portion 225 interposed therebetween in the X-axis direction by the photographing unit driving coil 230y and the photographing unit driving magnet 240y.
  • a second imaging unit (movable module) drive mechanism 250y that swings around an axis is configured.
  • the two imaging unit driving coils 230y are energized when the imaging unit 1 is energized.
  • the two second imaging unit driving mechanisms 250y push-pull that applies a moment in the same direction around the Y axis passing through the pivot portion 225 to the imaging unit 1 when the two imaging unit driving coils 230y are energized. It has a configuration. Note that, in the two second imaging unit driving mechanisms 250y, depending on the connection method of the two imaging unit driving coils 230y, the magnetization directions of the two imaging unit driving magnets 240y may be different, and the two second imaging unit driving mechanisms 250y.
  • the drive mechanism 250y may have a push-pull configuration.
  • a flat-plate-shaped buffer member 268 made of an elastic body such as rubber is fixed to the inner surface of the coil holding member 260 inside the imaging unit driving coils 230x and 230y. Is opposed to the imaging unit driving magnets 240x and 240y in a direction inside and outside through a predetermined gap.
  • the buffer member 268 has a function of absorbing the shock by the shooting unit driving magnets 240x and 240y when an impact is applied to the optical unit 200 with shake correcting function and the shooting unit 1 is displaced in a direction intersecting the Z-axis direction. Is responsible.
  • a camera-equipped mobile phone equipped with the optical unit 200 with a shake correction function configured as described above is equipped with a hand shake detection sensor (not shown) such as a gyro sensor for detecting hand shake during photographing.
  • the control unit mounted on the camera-equipped mobile phone energizes one or both of the photographing unit driving coil 230x and the photographing unit driving coil 230y, thereby Oscillate around one and both around the X axis and around the Y axis.
  • the photographing unit 1 is swung with respect to the entire XY plane. Therefore, it is possible to surely correct all camera shakes assumed for a camera-equipped mobile phone or the like.
  • the optical unit 200 with shake correction function of the present embodiment has a structure in which the photographing unit 1 is swingably supported with respect to the fixed body 210 via the pivot portion 225, and Since a photographing unit driving mechanism (a first photographing unit driving mechanism 250x and a second photographing unit driving mechanism 250y) that swings the photographing unit 1 is provided between the fixed body and the fixed body, the camera-equipped mobile phone on which the optical unit 200 is mounted. Even when camera shake or the like occurs when taking a picture with a telephone or the like, such camera shake or the like can be corrected by swinging the imaging unit 1. Accordingly, since it is not necessary to incorporate a shake correction mechanism in the photographing unit 1, even when the shake correction mechanism cannot be provided in the photographing unit 1 because the photographing unit 1 is small, shake correction can be performed.
  • a photographing unit driving mechanism a first photographing unit driving mechanism 250x and a second photographing unit driving mechanism 250y
  • the first photographing unit drive mechanism 250x that is paired in two places on both sides sandwiching the pivot portion 225 in the Y-axis direction is disposed, and the pivot portion 225 is sandwiched in the X-axis direction.
  • a second imaging unit driving mechanism 250y is disposed in two pairs on both sides. The two first photographing unit drive mechanisms 250x each generate a magnetic force that swings the photographing unit 1 in the same direction, and the two second photographing unit drive mechanisms 250y each swing the photographing unit 1 in the same direction. Generate magnetic force to move.
  • the driving is performed. Since the ability is stable, camera shake can be accurately corrected.
  • the other first imaging unit driving mechanism 250x when the distance from the pivot shaft 225 of one of the first imaging unit driving mechanisms 250x is shifted in the direction in which the magnetic driving force is reduced, the other first imaging unit driving mechanism 250x. Since the distance from the pivot shaft 225 of the drive mechanism 250x is shifted in the direction in which the magnetic drive force increases, the drive capability of the first photographing unit drive mechanism 250x is stable.
  • the other second imaging unit drive mechanism 250y when the distance from the pivot shaft 225 of one second imaging unit drive mechanism 250y out of the two second imaging unit drive mechanisms 250y deviates in the direction in which the magnetic driving force decreases, the other second imaging unit drive mechanism 250y. Since the distance from the pivot shaft 225 of the unit drive mechanism 250y is shifted in the direction in which the magnetic drive force increases, the drive capability of the second imaging unit drive mechanism 250y is stable.
  • the positional relationship between the imaging unit driving magnet 240x and the imaging unit driving coil 230x constituting the first imaging unit driving mechanism 250x is one of the two first imaging unit driving mechanisms 250x, and the magnetic driving force is reduced.
  • the second imaging unit drive mechanism 250x is displaced, the direction in which the positional deviation between the imaging unit driving magnet 240x and the imaging unit driving coil 230x in the second imaging unit driving mechanism 250x is corrected, that is, Since the magnetic driving force is shifted in the increasing direction, the first imaging unit driving mechanism 250x has a stable driving capability.
  • the positional relationship between the imaging unit driving magnet 240y and the imaging unit driving coil 230y constituting the second imaging unit driving mechanism 250y is smaller than that of the two second imaging unit driving mechanisms 250y, and the magnetic driving force is reduced.
  • the other second imaging unit driving mechanism 250y corrects the positional deviation between the imaging unit driving magnet 240y and the imaging unit driving coil 230y in one imaging unit driving mechanism 250y, that is, Since the magnetic driving force is shifted in the increasing direction, the driving capability of the second photographing unit driving mechanism 250y is stable.
  • the gimbal spring 280 that is a spring member that presses the photographing unit 1 toward the pivot portion 225 extends from the inner peripheral side connecting portion 281 to the outer peripheral side connecting portion 285 by extending in the same circumferential direction. Since the arm portion 287 of the book is provided, it is point symmetric. For this reason, the gimbal spring 280 exerts a substantially uniform biasing force in all directions, so that the posture of the photographing unit 1 is stable and the first photographing unit driving mechanism 250x and the second photographing unit driving mechanism 250y. Is very easy to control.
  • the arm portion 287 extends in the same circumferential direction, the arm portion 287 can be extended long, so that the gimbal spring 280 has a high linearity biasing force over the entire movable range of the photographing unit 1. Therefore, even from this point, the camera shake can be reliably corrected without complicating the control for the first photographing unit driving mechanism 250x and the second photographing unit driving mechanism 250y.
  • a magnet shooting unit driving magnet 240x, 240y
  • the coils shooting unit driving coils 230x, 230y
  • the number of wires for the shooting unit 1 on the movable body side can be reduced, thereby simplifying the wiring structure. can do.
  • the number of turns of the photographing unit driving coils 230x and 230y can be increased on the fixed body 210 side, a large driving force can be exhibited.
  • the photographing unit driving magnets 240x and 240y having a smaller mass are provided on the photographing unit 1 on the movable body side.
  • the photographing unit 1 can be reduced in weight. Therefore, since the photographing unit 1 can be swung with a small force, the power consumption required for shake correction can be reduced. Further, according to the present embodiment, there is an advantage that the response to hand shake is excellent.
  • a cover 150 is provided that surrounds the support 2 and moving body 3 of the photographing unit 1 on the outer peripheral side, and the lens driving magnet 17 is held on the inner peripheral surface of the cover 150, and the outer peripheral surface of the cover 150 Since the photographing unit driving magnets 240x and 240y are held in the middle, the lens driving mechanism 5 and the photographing unit driving mechanism (the first photographing unit driving mechanism 250x and the second photographing unit driving mechanism 250y) are arranged. Magnetic interference can be prevented.
  • FIG. 5 (a) and 5 (b) are explanatory diagrams showing the configuration of the coil holding member used in the optical unit with shake correction function according to Embodiment 2 of the present invention, and the optical unit with shake correction function as a light beam. It is a longitudinal cross-sectional view when cut
  • the coil holding member 260 is made of a plate material having no opening, but in this embodiment, as shown in FIGS. 5A and 5B, the coil holding member 260 is used. Is formed of a magnetic material, and an opening 265 made of a through hole is formed in a portion of the coil holding member 260 located inside the imaging unit driving coils 230x and 230y. The opening 265 faces the imaging unit driving magnets 240x and 240y on the outside.
  • the coil holding member 260 functions as a back yoke (fixed body side yoke) of the coils 230x and 230y.
  • the degree to which the magnetic field generated by the imaging unit driving magnets 240x and 240y intersects with the imaging unit driving coils 230x and 230y can be increased, so the first imaging unit driving mechanism 250x and the second imaging unit driving mechanism 250y.
  • the driving efficiency can be increased.
  • the buffer member 268 shown in FIGS. 1 and 2 is omitted, but the example shown in FIGS. 5A and 5B is also used.
  • the buffer member 268 shown in FIGS. 1 and 2 may be provided.
  • FIGS. 6A and 6B are an external view and an exploded perspective view, respectively, of the optical unit with a shake correction function according to Embodiment 3 of the present invention viewed obliquely from above on the subject side.
  • the optical unit with a shake correction function according to the present embodiment includes a part that is common to the optical unit with a shake correction function according to the first embodiment. Description is omitted.
  • the fixed cover 230 provided with the top plate portion 234 is used, but in FIGS. 6 (a) and 6 (b), As shown, a fixed cover 230 that does not have the top plate portion 234 may be used.
  • the yoke 16 provided with the flange portion 166 projecting to the outer peripheral side is used, but in FIGS. 6A and 6B, As shown, the yoke 16 that does not include the flange portion 166 may be used, or the yoke 16 that includes the upper plate portion 167 may be used.
  • the imaging unit driving coils 230x and 230y are supported by the coil holding member 260.
  • the coil holding member 260 is not used, but is fixed to the inner surface of the side plate portion 235 of the fixed cover 230.
  • the material for forming the fixed cover 230 and the base 220 is not particularly defined. However, if the entire fixed cover 230 and the entire base 220 are formed from a magnetic material, the first material Since the photographing unit driving mechanism 250x and the second photographing unit driving mechanism 250y are covered with a magnetic material, leakage of magnetic flux to the outside can be prevented. In addition, it is possible to reduce the influence of the external magnetic flux entering the first photographing unit driving mechanism 250x and the second photographing unit driving mechanism 250y and affecting the posture of the photographing unit 1.
  • the fixed cover 230 is formed of a magnetic material
  • a magnetic attraction force is generated between the imaging unit driving magnets 240x and 240y attached to the imaging unit 1 and the fixed cover 230. This may affect the displacement of the photographing unit 1 by the shake correction mechanism.
  • a fixed cover 230 that does not include the top plate portion 234 is used instead of the fixed cover 230 described with reference to FIG. 1, as shown in FIG. 6, a fixed cover 230 that does not include the top plate portion 234 is used. That's fine. With this configuration, the magnetic attractive force generated between the imaging unit driving magnets 240x and 240y and the top plate portion 234 of the fixed cover 230 can be eliminated. Therefore, no extra biasing force is generated in the photographing unit 1 in the Z-axis direction. Further, in the case of the fixed cover 230 that does not include the top plate portion 234, the gap between the fixed cover 230 and the photographing unit 1 is monitored from the subject side by an image sensor or the like when assembling the photographing optical device 200. Thus, it is possible to work while confirming the positional relationship, and assembling with high positional accuracy becomes possible.
  • the top plate portion 234 is provided as in the case of the fixed cover 230 described with reference to FIG. 1, in the photographing unit driving magnet 240x and the photographing unit driving magnet 240y that are adjacent in the circumferential direction.
  • the magnetic poles of adjacent portions in the circumferential direction may be different.
  • the magnetic attractive force generated between the imaging unit driving magnets 240x and 240y and the top plate portion 234 of the fixed cover 230 can be reduced. Therefore, it is possible to reduce an extra biasing force toward the photographing unit 1 in the Z-axis direction.
  • FIG. 7 is an explanatory diagram showing magnetic flux leakage countermeasures for an optical unit with a shake correction function to which the present invention is applied.
  • the entire fixed cover 230 is made of a magnetic material.
  • a part of the fixed cover 230 may be made of a magnetic material, and the other part may be made of a nonmagnetic material. That is, in the fixed cover 230 shown in FIG. 7, when viewed from a direction orthogonal to the optical axis L, at least a portion 230a outside the entire range in which the photographing unit driving magnets 240x and 240y move (shaded portions in the drawing). ) Is a magnetic material, and the other portion 230b is a non-magnetic material.
  • the fixed cover 230 includes a first cover part (part 230b) made of a nonmagnetic material and a second cover part (part 230a) made of a magnetic material.
  • the portions located in the magnetic flux regions 240x and 240y are made of a magnetic material.
  • the portion 230a made of a magnetic material of the fixed cover 230 covers the outside of the imaging unit driving magnets 240x and 240y and the imaging unit driving coils 230x and 230y, so that magnetic flux leakage to the outside is prevented. Can be prevented. Further, it is possible to prevent the external magnetic flux from affecting the first photographing unit driving mechanism 250x and the second photographing unit driving mechanism 250y.
  • the portion 230b made of a magnetic material in the fixed cover 230 functions as a magnetism collecting yoke, the flux linkage linked to the imaging unit driving coils 230x and 230y increases. For this reason, since the first photographing unit driving mechanism 250x and the second photographing unit driving mechanism 250y can obtain a large thrust when correcting the posture of the photographing unit 1, it is possible to improve the responsiveness of correction with respect to shake. .
  • part formed from the magnetic material and the part formed from the non-magnetic material can be formed as separate parts and can be combined to form the fixed cover 230, or can be an integrally molded product. it can.
  • the entire main body portion of the fixed cover 230 may be made of a nonmagnetic material, and a magnetic plate may be attached to the main body portion to constitute the portion 230a made of a magnetic material.
  • a magnetic plate one made of a known material such as iron can be used.
  • FIG. 8 is an explanatory diagram showing another magnetic flux leakage countermeasure for the optical unit with a shake correction function to which the present invention is applied.
  • the magnetic flux leakage countermeasure 1 described above the fixed cover 230 is used.
  • the magnetic flux leakage countermeasure may be performed using the yoke 16 (movable module side yoke).
  • the yoke 16 movable module side yoke.
  • FIG. 8 by changing the shape of the yoke 16, magnetic flux leakage from the first imaging unit driving mechanism 250x and the second imaging unit driving mechanism 250y to the outside is prevented, and intrusion from the outside is performed. To prevent the influence of magnetic flux.
  • the yoke 16 includes a rectangular top plate portion 161 on the subject side, four side plate portions 162 extending rearward from the outer peripheral edge of the top plate portion 161, and the side plate portion 162.
  • the imaging unit driving magnets 240x and 240y are fixed to the outer surface of the side plate portion 162.
  • the photographing unit driving coils 230x and 230y are disposed between the coil-side magnetic flux collecting yoke portion 198 and the photographing unit driving magnets 240x and 240y in the direction orthogonal to the optical axis L, and the photographing unit driving coils. There are gaps between 230x and 230y and the coil-side magnet collecting yoke portion 198 and between the imaging unit driving coils 230x and 230y and the imaging unit driving magnets 240x and 240y.
  • the imaging unit driving magnets 240x and 240y and the imaging unit driving coils 230x and 230y are surrounded by the yoke 16. For this reason, it is possible to prevent magnetic flux leakage from the first photographing unit drive mechanism 250x and the second photographing unit drive mechanism 250y to the outside, and to prevent the influence of magnetic flux entering from the outside. Further, the flux linkage linked to the imaging unit driving coils 230x and 230y increases. Therefore, when the first photographing unit driving mechanism 250x and the second photographing unit driving mechanism 250y correct the posture of the photographing unit 1, a large thrust can be obtained, so that responsiveness is improved.
  • each photographing unit driving coil 230x, 230y is a long trapezoidal shape on the lower side. If the center where the movable unit swings is in the range overlapping the movable unit in the Z-axis direction, the vertical cross-sectional shape of each of the photographing unit driving coils 230x and 230y is rectangular.
  • the above configuration can be applied to both the case where the side plate portion 235 of the fixed cover 230 is made of a magnetic material and the case of a non-magnetic material.
  • the coil holding part may be extended from the fixed cover 230 side.
  • the magnets (shooting unit driving magnets 240x and 240y) are held on the photographing unit 1 side which is the movable body side, and the fixed body.
  • the shooting unit driving coil is held on the shooting unit 1 side, which is the movable body side, and a shooting unit on the fixed body 210 side.
  • a configuration in which a driving magnet is held may be employed.
  • the photographing unit 1 is swung around the X axis by the first photographing unit driving mechanism 250x, and the photographing unit 1 is swung around the Y axis by the second photographing unit driving mechanism 250y.
  • the photographing unit 1 may be swung around the Y axis by the driving mechanism 250x, and the photographing unit 1 may be swung around the X axis by the second photographing unit driving mechanism 250y.
  • both the first photographing unit drive mechanism 250x and the second photographing unit drive mechanism 250y are provided for the photographing unit 1, but only the shake in the direction in which camera shake easily occurs when the user uses it.
  • the present invention is applied so that two pairs are formed on both sides sandwiching the pivot portion 225. Only one of the first photographing unit driving mechanism 250x or the second photographing unit driving mechanism 250y may be provided.
  • the present invention is applied to the photographing optical device 200 using the photographing unit 1 in which the lens driving coils 30 s and 30 t are square cylinders and the lens driving magnet 17 is a flat plate.
  • the present invention may be applied to a photographing optical apparatus using a photographing unit having a configuration in which 30s and 30t are cylindrical, the case 18 is a rectangular tube, and the lens driving magnet 17 is disposed at a corner portion of the case 18. .
  • the gimbal spring 280 having a plurality of arm portions 287 linearly extending in the same circumferential direction is used as the biasing means.
  • the plurality of arm portions 287 are in the same direction. As long as the configuration extends, a configuration in which the arm portion 287 extends while being curved may be employed.
  • the present invention is applied to the optical unit 200 with a shake correction function used in a camera-equipped mobile phone has been described.
  • an example in which the present invention is applied to an optical unit 200 used in a thin digital camera or the like will be described. Also good.
  • the lens driving mechanism 5 that magnetically drives the moving body 3 including the lens 121 in the optical axis direction in addition to the lens 121 and the imaging device 155 in the photographing unit 1 is supported on the support 2.
  • the present invention may be applied to a fixed focus type optical unit in which the lens driving mechanism 5 is not mounted on the photographing unit 1.
  • the photographing unit 1 including a lens and an image sensor is described as the movable module.
  • the present invention can be applied to an optical unit including at least a lens as the movable module. Examples of the optical unit include a laser pointer and a portable or vehicle-mounted projection display device.
  • an attached module 270 including a shutter mechanism, a filter driving mechanism, and a diaphragm mechanism is fixed to an optical unit 200 with a shake correction function, and an attached module flexible substrate 275 is attached. It is drawn from the module 270.
  • a camera shake detection sensor 170 serving as a shake detection sensor is disposed between the sensor support substrate 115 and the photographing unit 1a, and the image sensor 155 and the lens driving device are used.
  • the imaging device flexible substrate 1550 to which the coils 30 s and 30 t are electrically connected and the sensor flexible substrate 175 on which the camera shake detection sensor 170 is mounted are also provided.
  • FIGS. 9A and 9B are an external view of the photographic optical device 2000 to which the present invention is applied as viewed obliquely from the upper side on the subject side, and the photographic optical device 2000 cut along a line parallel to the optical axis. It is explanatory drawing when doing.
  • FIG. 10 is an exploded perspective view of a photographing optical device 2000 to which the present invention is applied.
  • a movable module 1000 having a built-in focus mechanism for the lens, and a camera shake correction mechanism for performing camera shake correction by swinging the movable module 1000.
  • a camera shake correction mechanism for performing camera shake correction by swinging the movable module 1000.
  • a shutter mechanism and various filters appear on the optical axis at the subject side end of fixed cover 230, and retracted from the optical axis.
  • a filter driving mechanism for switching between the two and the auxiliary module 270 incorporating a diaphragm mechanism is fixed.
  • the accessory module flexible substrate 275 pulled out from the accessory module 270 is drawn along the side surface of the accessory module 270 to the side opposite to the object side, and then to a control circuit (not shown) of the apparatus main body. It extends towards.
  • the shutter mechanism a mechanism type that magnetically drives the shutter plate or a mechanism using a liquid crystal device can be used.
  • the movable module 1000 has a photographing unit 1a that incorporates a focusing mechanism for the lens, and this photographing unit 1a constitutes a camera shake prevention mechanism.
  • this photographing unit 1a constitutes a camera shake prevention mechanism.
  • each cylindrical yoke 16 that houses the photographing unit 1a and a sensor support substrate 115 are attached. Since the configuration of the imaging unit 1a is the same as the configuration of the imaging unit 1 of the optical unit 200 with shake correction function already described, the details will be omitted and different configurations will be described.
  • the support 2 includes a substrate 154 on which an imaging element 155 is mounted on the upper surface, as in the imaging unit 1 shown in FIG. 3, and the substrate 154 is fixed to the lower surface of the imaging element holder 19.
  • the substrate 154 is a double-sided substrate, and an imaging element flexible substrate 1550 (see FIG. 9 and the like) that is electrically connected to the imaging element 155 is connected to the lower surface side of the substrate 154.
  • the imaging device 155 and the lens driving coils 30s and 30t are electrically connected to the control unit of the apparatus main body. Need to connect to. Therefore, in the present embodiment, the imaging element flexible substrate 1550 is disposed on the opposite side to the subject side with respect to the photographing unit 1a, and the imaging element 155 and the lens driving coil 30s are arranged on the wiring pattern formed on the imaging element flexible substrate 1550. , 30t are electrically connected.
  • FIG. 11 (a) and 11 (b) are longitudinal sectional views when the optical apparatus for photography to which the present invention is applied are cut at a position corresponding to the line A1-A1 ′ of FIG. 9 (a), and FIG. It is a longitudinal cross-sectional view when cut at a position corresponding to the line A2-A2 ′ of (a).
  • the photographic optical device 2000 firstly forms a shake correction, specifically, a shake correction mechanism.
  • a camera shake detection sensor 170 is disposed between the sensor support substrate 115 and the photographing unit 1a.
  • the camera shake detection sensor 170 is a surface mount type gyro sensor (angular velocity sensor), and is mounted downward on the sensor flexible substrate 175.
  • the upper surface of the camera shake detection sensor 170 is supported on the upper surface of the sensor support substrate 115.
  • a gyro sensor is a sensor that detects angular velocity of two axes, preferably two axes orthogonal to each other.
  • the gyro sensor is configured to detect a biaxial angular velocity composed of an X axis and a Y axis.
  • the sensor support substrate 115 is formed with side plate portions 115b and 115c obliquely upward from the outer peripheral portion of the bottom plate portion, but the side plate portion 115c located in the Y-axis direction is a side plate portion located in the X-axis direction. Slightly lower than 115b.
  • the side plate portion 115b of the sensor support substrate 115 is fixed between the side plate portion 115c of the sensor support substrate 115 and the substrate 154 in a state where the side plate portion 115b of the imaging unit 1a is fixed to the bottom surface of the imaging unit 1a.
  • a gap is formed through which the strip-shaped narrow portions 1550b and 175b of the element flexible substrate 1550 and the sensor flexible substrate 175 are passed.
  • a support protrusion 225 that forms a hemispherical pivot portion is formed at the center of the upper surface of the base 220 used for the fixed body 210, and the upper end portion of the support protrusion 225 is the sensor support substrate 115 of the movable module 1000.
  • a pivot part 205 (swing support part) that supports the movable module 1000 so as to swing is constituted.
  • the support protrusion 225 is located on the optical axis L. Therefore, the movable module 1000 can swing by the support protrusion 225 in any of the X axis direction, the Y axis direction, and the direction sandwiched between the X axis direction and the Y axis direction.
  • the support protrusion 225 (pivot portion 205) is disposed at a position overlapping the hand shake detection sensor 170 in the optical axis direction on the side opposite to the subject side with respect to the hand shake detection sensor 170.
  • a gimbal spring 280 having a rectangular planar shape is disposed between the fixed body 210 and the movable module 1000 as a biasing unit that biases the movable module 1000 toward the support protrusion 225. Since the configuration of the gimbal spring 280 is the same as the configuration of the photographing unit 1 in the above-described embodiment, detailed description thereof is omitted.
  • a camera shake correction magnetic drive mechanism for camera shake correction that generates a magnetic force that swings the movable module 1000 with the support protrusion 225 as a fulcrum, between the movable module 1000 and the fixed body 210
  • a first camera shake correction magnetic drive mechanism 250x that swings the movable module 1000 about the X axis as indicated by an arrow X with the support protrusion 225 of the pivot portion 205 as a fulcrum, and the movable module 1000 with the support protrusion 225 as a fulcrum.
  • a second camera shake correction magnetic drive mechanism 250y that swings around the Y axis is configured.
  • the first camera shake correction magnetic drive mechanism 250x and the second camera shake correction magnetic drive mechanism 250y are configured. This configuration is basically the same as the configuration already described in the embodiment of the optical unit 200 with the shake correction function. Since it is, the same parts will not be described, different portions will be described.
  • a rectangular tube-shaped camera shake correction coil holder 2600 is disposed on the outer peripheral side of the photographing unit 1a so as to surround the photographing unit 1a.
  • a bobbin portion 2610 having a coil winding groove 2630 opened around is formed outside each surface of the camera shake correction coil holder 2600, and the camera shake correction coil holder 2600 has spacers on both sides in the optical axis direction.
  • 290 and the attached module 270 are fixed inside the base 220.
  • a non-magnetic material is used, and in this embodiment, an integrally molded product of resin is used.
  • a rectangular frame-shaped spacer 290 (a contact portion) is arranged, and the spacer 290 is made of an elastic member having an L-shaped cross section.
  • the shake correction coil 230x (first shake correction coil) is wound around the bobbin portion 2610 formed at a position facing each other in the Y-axis direction.
  • the camera shake correction coil 230x is positioned on the outer side with respect to the camera shake correction magnet 240x, and the camera shake correction magnet 240x forms a magnetic field interlinking with each side of the camera shake correction coil 230x.
  • the movable module 1000 is paired around the X axis by the camera shake correcting coil 230x and the camera shake correcting magnet 240x in pairs at two locations facing each other with the support protrusion 225 interposed therebetween in the Y-axis direction.
  • the first camera shake correction magnetic drive mechanism 250x is configured to swing.
  • the two camera shake correction coils 230x move the movable module 1000 around the X axis when energized. Are connected so as to generate a magnetic driving force in the same direction.
  • the two first camera shake correction magnetic drive mechanisms 250x apply a moment in the same direction around the X axis passing through the support protrusion 225 to the movable module 1000 when the two camera shake correction coils 230x are energized. Has a pull configuration.
  • a camera shake correction coil 230 y (second camera shake correction coil) is wound around the bobbin portions 2610 formed at positions facing each other in the X-axis direction.
  • the camera shake correction coil 230y faces the camera shake correction magnet 240y in the inner and outer directions. Therefore, the camera shake correction magnet 240y forms a magnetic field interlinking with each side of the camera shake correction coil 230y.
  • the movable module 1000 is paired around the Y axis by the camera shake correcting coil 230y and the camera shake correcting magnet 240y in pairs at two locations facing each other with the support protrusion 225 interposed therebetween in the X-axis direction.
  • the second camera shake correction magnetic drive mechanism 250y is configured to swing.
  • the two camera shake correction coils 230y move the movable module 1000 around the Y axis when energized. Are connected so as to generate a magnetic driving force in the same direction.
  • the two second camera shake correction magnetic drive mechanisms 250y apply a moment in the same direction around the Y axis passing through the support protrusion 225 to the movable module 1000 when the two camera shake correction coils 230y are energized. Has a pull configuration.
  • wiring holes 280a and 290a are formed at the corners of the gimbal spring 280 and the spacer 290, and the end portions 235x and 235y of the shake correction coils 230x and 230y are the wiring holes 280a and 290a of the gimbal spring 280 and the spacer 290, respectively. And is connected to the sensor flexible board 175 and extends toward a control circuit (not shown) of the apparatus main body. ing.
  • FIGS. 12A, 12B, and 12C show a camera shake correction magnetic drive mechanism (a first camera shake correction magnetic drive mechanism 250x and a second camera shake correction magnetism) configured in an imaging optical device to which the present invention is applied. It is explanatory drawing which shows the structure of the drive mechanism 250y), explanatory drawing which shows the planar arrangement
  • FIGS. 13A, 13B, and 13C show another camera-shake correction magnetic drive mechanism (the first camera-shake correction magnetic drive mechanism 250x and the second camera-shake correction) configured in the photographing optical apparatus to which the present invention is applied.
  • FIG. 6 is an explanatory diagram showing the configuration of the magnetic drive mechanism 250y), an explanatory diagram showing its planar arrangement, and an explanatory diagram showing its arrangement in the optical axis direction.
  • FIGS. 14A, 14B, and 14C show still another camera-shake correction magnetic drive mechanism (the first camera-shake correction magnetic drive mechanism 250x and the second camera-shake) configured in the photographing optical apparatus to which the present invention is applied. It is explanatory drawing which shows the structure of the magnetic drive mechanism for correction
  • FIG. 15 is an explanatory diagram showing a comparison between the configuration shown in FIG. 13 and the configuration shown in FIG. 14 as the camera shake correction magnetic drive mechanism configured in the photographing optical device to which the present invention is applied. 15 (a) shows the configuration shown in FIG. 14, and FIG. 15 (b) shows the configuration shown in FIG.
  • the imaging optical device 2000 of the present embodiment and the optical unit 200 with the shake correction function described above are added to the shake correction magnetic drive mechanism (the first shake correction magnetic drive mechanism 250x and the second shake correction magnetic drive mechanism 250y). ), The configurations shown in FIGS. 12, 13, and 14 can be employed.
  • the camera shake correction coil 230x has a Y-axis relative to the camera shake correction magnet 240x.
  • the side portion extending in the X-axis direction at a position shifted in the Z-axis direction from the position facing in the direction is the effective side 231x, and the camera shake correction coil 230y is in the X-axis direction with respect to the camera shake correction magnet 240y.
  • each of the camera shake correction magnets 240x and 240y is magnetized on the outer surface side to the same pole, for example, the N pole.
  • the camera shake correction magnet 240x and the camera shake correction magnet 240y are magnetized to different poles on the outer surface side.
  • the camera shake correction magnet 240x is magnetized to the N pole on the outer surface side
  • the camera shake correction magnet 240 is magnetized to the S pole on the outer surface side.
  • FIG. 12 (a) When such a configuration is employed, as can be seen by comparing the magnetic flux shown in FIG. 12 (a) with the magnetic flux shown in FIG. 13 (a), according to the configuration shown in FIG. Magnetic flux is also effectively linked to the side portions 233x and 233y extending in the Z-axis direction of 230y. Therefore, when the same current is passed through the coil with the same number of coil turns, the configuration shown in FIGS. 13A, 13B, and 13C is preferably used. A larger torque can be obtained as compared with the case where the configurations shown in b) and (c) are adopted.
  • each of the camera shake correction magnets 240x and 240y has its outer surface magnetized with a different pole in the Z-axis direction.
  • the portion located on the subject side is magnetized to the N pole, and the portion located on the opposite side (image sensor side) from the subject side is magnetized to the S pole.
  • the hand-shake correction coil 230x has a side portion extending in the X-axis direction so as to face each portion magnetized on different poles of the hand-shake correction magnet 240x in the Y-axis direction.
  • the hand-shake correction coil 230y has side portions extending in the Y-axis direction so as to face each part magnetized in different poles of the hand-shake correction magnet 240y in the X-axis direction.
  • the effective side is 231y.
  • FIGS. 15A and 15B correspond to FIGS. 14C and 13C, respectively. Comparing the configuration shown in FIG. 14 and FIG. 15A with the configuration shown in FIG. 13 and FIG. 15B, first, in the case of the configuration shown in FIG. 14 and FIG. Compared to the configuration shown in FIG. 15B, there is an advantage that the leakage of magnetic flux is small.
  • Equation (2) M d ⁇ F ⁇ cos ⁇ (2) It is represented by Accordingly, when ⁇ is 45 °, an equivalent moment M is generated in the configuration shown in FIGS. 14 and 15A and the configuration shown in FIGS. 13 and 15B.
  • ⁇ exceeds 45 °.
  • the moment M obtained by the expression (1) is larger. Therefore, the configuration shown in FIGS. 14 (a), (b), and (c) is larger than the configuration shown in FIGS. 13 (a), (b), and (c). Torque can be obtained.
  • 15A and 15B illustrate the first camera shake correction magnetic drive mechanism 250x, the same applies to the second camera shake correction magnetic drive mechanism 250y.
  • FIGS. 16A, 16B, and 16C are each an explanatory view of the periphery of the pivot portion 205 of the photographing optical apparatus 2000 to which the present invention is applied, and an explanation of the overlapping portion of the flexible substrate for the image sensor and the sensor. It is explanatory drawing of the state which notched the figure and its upper part.
  • 17A, 17B, and 17C are development views of the imaging element flexible substrate 1550 used as the main substrate in the imaging optical device 2000 to which the present invention is applied, and the imaging element flexible substrate 1550 is folded. It is explanatory drawing of the state which accumulated, and explanatory drawing of the state which notched the upper part.
  • 18A, 18 ⁇ / b> B, and 18 ⁇ / b> C are developed views of the sensor flexible substrate 175 used as the sub substrate in the optical imaging device 2000 to which the present invention is applied, and the sensor flexible substrate 175 is folded. It is explanatory drawing of a state, and explanatory drawing of the state which notched the upper part.
  • the valley fold line is indicated by a one-dot chain line
  • the mountain fold line is indicated by a dotted line.
  • the attached module flexible substrate 275 pulled out from the attached module 270, the image sensor 155 and the lens drive.
  • Three flexible substrates are used: an imaging element flexible substrate 1550 to which the coils 30s and 30t are electrically connected, and a sensor flexible substrate 175 on which the camera shake detection sensor 170 is mounted.
  • Such flexible boards are all flexible wiring members in which a wiring pattern is formed on an insulating base material, and when deformed, a shape restoring force is generated to return to the original shape.
  • a single-sided flexible substrate in which a wiring pattern is formed on one surface of the insulating base material is provided. It is used. Since such a single-sided flexible substrate has a thin base material and a wiring pattern is formed only on one side, it deforms with a small force and has a small shape restoring force when deformed. In addition, the flexible substrate is inexpensive.
  • the attached module flexible substrate 275 is routed along the side surface of the fixed cover 230 to the opposite side to the subject side and bonded to the fixed cover 230.
  • a part of the flexible substrate 1550 for the image sensor and the flexible substrate 175 for the sensor are connected to the pivot portion.
  • the imaging device flexible substrate 1550 includes a rectangular connection portion 1550 a that is electrically connected to the substrate 154, and a control portion.
  • a lead-out portion 1550c and a strip-like narrow width portion 1550b that connects the connection portion 1550a and the lead-out portion 1550c are provided.
  • bent portions 1550f, 1550g, and 1550h are provided at a plurality of portions of the strip-shaped narrow width portion 1550b.
  • the sensor flexible substrate 175 includes a rectangular mounting portion 175a on which the camera shake detection sensor 170 is mounted, and a belt-like shape extending from the mounting portion 175a.
  • a narrow portion 175b, and the leading end of the strip-shaped narrow portion 175b is a lead-out portion 175c.
  • the strip-shaped narrow portion 175b is formed to be considerably narrower than the mounting portion 175a.
  • a bent portion 175h is provided in the belt-like narrow width portion 175b.
  • the imaging device flexible substrate 1550 and the sensor flexible substrate 175 configured as described above are connected to the connection portion 1550a in the imaging device flexible substrate 1550, as shown in FIGS. 16 (a), (b), and (c).
  • the sensor flexible substrate 175 is disposed between the sensor flexible substrate 175 and the sensor flexible substrate 175.
  • the lead portion 175c of the sensor flexible substrate 175 is electrically connected to the lead portion 1550c of the imaging element flexible substrate 1550.
  • the end of the accessory module flexible substrate 275 shown in FIG. 9 is also electrically connected to the lead-out portion 1550c of the imaging element flexible substrate 1550.
  • the base 220 is positioned between the connection portion 1550a and the strip-shaped narrow width portion 1550b of the imaging device flexible substrate 1550.
  • the strip-shaped narrow portions 1550b and 175b of the imaging device flexible substrate 1550 and the sensor flexible substrate 175 are arranged in parallel so as to sandwich the support protrusion 225 (pivot portion 205) on both sides in the X-axis direction. Extends in the Y-axis direction.
  • the band-shaped narrow portions 1550 b and 175 c of the imaging device flexible substrate 1550 and the sensor flexible substrate 175 are arranged between the sensor support substrate 115 of the movable module 1 and the fixed body 210 and the base 220 by the pivot portion 205. It is routed so as to avoid the support protrusion 225 within the configured gap.
  • the bent portions 1550f and 175h toward the imaging device 155 and the camera shake detection sensor 170 are point-symmetrical with respect to the support protrusion 225. It is arranged at a position or a substantially point-symmetrical position.
  • the base 220 includes a side plate portion 222 that stands up toward the subject side on two opposite side portions of the bottom plate portion 221, and corresponds to the other two side portions in the bottom plate portion 221.
  • the side plate portion 222 is not formed in the portion, and notches 221a and 221b are formed at positions overlapping the folded portions 1550f and 175h of the strip-shaped narrow portions 1550b and 175b of the imaging device flexible substrate 1550 and the sensor flexible substrate 175.
  • the bent portions 1550f and 175h are provided in the strip-shaped narrow portions 1550b and 175b of the imaging device flexible substrate 1550 and the sensor flexible substrate 175, problems such as the bent portions 1550f and 175h being caught by the base 220 do not occur. .
  • the camera-equipped mobile phone equipped with the photographing optical device 2000 configured as described above is equipped with a camera shake detection sensor such as a gyro sensor for detecting camera shake during shooting, and the detection result of the camera shake detection sensor.
  • the control unit mounted on the camera-equipped mobile phone energizes one or both of the camera shake correction coil 230x and the camera shake correction coil 230y, and is configured on the side opposite to the subject side with respect to the lens 121.
  • the movable module 1000 is swung around one or both of the X axis and the Y axis around the pivot portion 205 formed. By combining such swinging, the movable module 1000 is swung with respect to the entire XY plane. Therefore, it is possible to surely correct all camera shakes assumed for a camera-equipped mobile phone or the like.
  • the camera shake detection sensor is mounted on the movable module 1000 itself, and the control unit (not shown) determines that the integral value of the angular velocity detected by the camera shake detection sensor, that is, the angular displacement is zero.
  • the first camera shake correction magnetic drive mechanism 250x and the second camera shake correction magnetic drive mechanism 250y are closed-loop controlled.
  • the spacer 290 functions as a contact portion with respect to the yoke 16 of the movable module 1000, and the collision between the shake correction coils 230 x and 230 y and the yoke 16, and the shake correction magnets 240 x and 240 y and the fixed body 210. Before the collision occurs, the spacer 290 comes into contact with the yoke 16 of the movable module 1000. Therefore, the correction coils 230x and 230y and the camera shake correction magnets 240x and 240y can be protected.
  • the spacer 290 having an L-shaped cross section is used.
  • the shape of the spacer 290 is limited to the L-shaped cross section as long as the movable module 1000 vibrates first when the movable module 1000 vibrates. It is not a thing.
  • the movable module 1000 and the fixed body 210 are brought into contact with each other before the collision between the shake correction coils 230x and 230y and the yoke 16 or the collision between the shake correction magnets 240x and 240y and the fixed body 210 occurs.
  • the contact portion may be configured on either the movable module 1000 side or the fixed body 210 side.
  • the imaging element flexible substrate 1550 that is electrically connected to the imaging element 155 is drawn from the end of the movable module 1000 opposite to the subject side.
  • the movable module 1000 is swung around the side where the image sensor 155 is located with respect to the lens 121 (the end opposite to the subject side). The deformation is extremely small. Therefore, the movable module 1000 can be swung quickly.
  • the shape restoring force of the imaging element flexible substrate 1550 received by the movable module 1000 is also extremely small. . Therefore, the movable module 1000 can be properly swung without being affected by the deformation of the imaging element flexible substrate 1550, and thus the camera shake correction can be performed reliably.
  • the camera shake detection sensor 170 is mounted on the movable module 1000 and closed loop control is adopted, the camera shake detection sensor 170 is electrically connected from the end of the movable module 1000 opposite to the subject side.
  • the sensor flexible substrate 175 is also drawn out, the movable module 1000 is swung around the side where the image sensor 155 is located with respect to the lens 121 (the end opposite to the subject side). Since the movable module 1000 can be properly swung without being affected by the deformation of the flexible substrate 1550 and the sensor flexible substrate 175, camera shake correction can be performed reliably.
  • a magnetic drive mechanism is used as an actuator for camera shake correction.
  • the image sensor 155 is located on the side where the image sensor 155 is located (the end opposite to the object side), that is, the image sensor flexible substrate 1550 and the sensor. Since the movable module 1000 is swung around the side on which the flexible substrate 175 is located, the deformation of the imaging device flexible substrate 1550 and the sensor flexible substrate 175 is less likely to be affected as an external force. Therefore, even the configuration in which the movable module 1000 is oscillated by magnetic drive can be properly driven, so that camera shake correction with excellent responsiveness can be accurately performed.
  • both of the imaging element flexible substrate 1550 and the sensor flexible substrate 175 are used by being folded in the optical axis direction, but the bent portions 1550f, 1550g, 1550h, and 175h are all strip-shaped narrow widths. Portions 1550b and 175b. For this reason, it can be bent with a small force, and the shape restoring force after being bent is small, so that the deformation of the imaging device flexible substrate 1550 and the sensor flexible substrate 175 hardly affects the swing of the movable module 1000.
  • the pivot tip portion 205 is used to support the movable module 1000 so as to be swingable, the movable module 1000 can be reliably supported with a simple configuration.
  • the camera shake detection sensor 170 is arranged at a position overlapping the pivot tip 205 in the optical axis direction, displacement in any direction of the movable module 1000 due to camera shake can be reliably detected. Can be done.
  • the strip-shaped narrow width portions 1550b and 175b of the imaging device flexible substrate 1550 and the sensor flexible substrate 175 extend in parallel on both sides so as to avoid the pivot tip portion 205.
  • a gap generated between the movable module 1000 and the base 220 of the fixed body 210 by the formation can be effectively used as a drawing space for the imaging device flexible substrate 1550 and the sensor flexible substrate 175.
  • the bent portions 1550 h and 175 h toward the imaging device 155 and the camera shake detection sensor 170 are supported around the support projection 225.
  • the bent portions 1550h and 175h are arranged at point-symmetrical positions or substantially point-symmetrical positions. Therefore, even when the movable module 1000 swings in any direction, the force exerted on the movable module 1000 by the flexible substrate for image sensor 1550 and the flexible substrate for sensor 175 is the same. Therefore, the movable module 1000 can be properly swung, so that camera shake correction can be performed reliably.
  • the accessory module 270 is fixed to the fixed body 210 when the accessory module 270 provided with the shutter mechanism is provided on the subject side with respect to the photographing unit 1a. For this reason, even when the accessory module 270 is provided, the movable module 1000 can be kept light, so that when the camera shake correction is performed, the movable module 1000 can be swung quickly and with a small force.
  • magnets (camera shake correction magnets 240x and 240y) are held on the movable module 1000 side which is the movable body side. Since the coils (camera shake correction coils 230x and 230y) are held on the fixed body 210 side, the number of wires for the movable module 1000 on the movable body side may be small, so that the wiring structure can be simplified. Further, since the number of turns of the camera shake correction coils 230x and 230y can be increased on the fixed body 210 side, a large driving force can be exhibited.
  • the camera shake correction magnets 240x and 240y having a smaller mass are provided on the movable module 1 on the movable body side. Can be reduced in weight. Therefore, since the movable module 1 can be swung with a small force, it is possible to reduce power consumption required for camera shake correction. Further, according to the present embodiment, there is an advantage that the response to hand shake is excellent.
  • the imaging element flexible substrate 1550 and the sensor flexible substrate 175 that are electrically connected to the imaging element 155 and the camera shake detection sensor 170 are drawn out from the end of the movable module 1000 opposite to the subject side.
  • a flexible wiring member such as a resin-coated lead wire
  • the deformation of the flexible wiring member is also possible. Affects the movable module 1000. Even in such a configuration, if the present invention is applied, the movable module 1000 can be properly swung without being affected by the deformation of the flexible wiring member. Therefore, camera shake correction can be performed reliably.
  • the movable module 1000 is swung around the X axis and the Y axis by the two camera shake correction magnetic drive mechanisms.
  • the movable module 1000 is rotated around the X axis and the Z axis by the two camera shake correction magnetic drive mechanisms.
  • magnets (camera shake correction magnets 240x and 240y) are held on the movable module 1000 side which is the movable body side.
  • the structure in which the coils (camera shake correction coils 230x and 230y) are held on the fixed body 210 side is adopted, but the camera shake correction coil is held on the movable module 1000 side which is the movable body side, and the camera shake on the fixed body 210 side.
  • a configuration in which a correction magnet is held may be employed.
  • the gimbal spring 280 is used as the urging means for urging the movable module 1000 toward the pivot tip 205, but as the urging means, the movable module 1000 is pivoted by the magnetic action.
  • a magnetic spring that urges the movable module 1000 toward the pivot tip 205 and a spring member that mechanically urges the movable module 1000 toward the pivot tip 205 may be used.
  • the gimbal spring 280 described above can be used.
  • the magnetic spring it is possible to adopt a configuration in which a magnetic body is disposed on the side opposite to the subject side with respect to the camera shake correction magnets 240x and 240y in the fixed body 210.
  • tip part 205 can be maintained reliably. Further, during the neutral period during which the camera shake correction magnetic drive mechanism stops driving, the movable module 1 is biased toward the pivot tip 205 only by the magnetic spring, and the gimbal spring 280 is not deformed so as not to generate a biasing force. State. In such a configuration, when the movable module 1000 swings, the gimbal spring 280 is deformed and exerts an urging force. That is, the gimbal spring 280 remains flat during the period when the movable module 1000 is not swinging.
  • the movable module 1000 can be properly swung, and the camera shake correction is ensured. Can be done.
  • the connecting portion between the arm portion 287 and the outer peripheral side connecting portion 285, the connecting portion between the arm portion 287 and the inner peripheral side connecting portion 281, or the entire arm portion 287 has a gel material or an elastic sheet. It is preferable that a vibration absorbing material such as is fixed, and if such measures are taken, the vibration of the arm portion 287 can be quickly stopped when the movable module 1000 is swung. The vibration can be stopped quickly.
  • the support protrusion 225 is formed in a hemispherical shape, the dimension of the optical device for photographing 2000 in the direction of the optical axis L can be shortened, but the support protrusion 225 is formed in an axial shape. Also good. Further, the portion of the sensor support substrate 115 with which the support protrusion 225 abuts may be a concavity recessed portion. Further, the support protrusion 225 may be formed on the movable module 1000 side.
  • the present invention is applied to the photographing optical device 2000 using the photographing unit 1a in which the lens driving coils 30s and 30t are square cylinders and the lens driving magnet 17 is a flat plate.
  • the present invention may be applied to a photographing optical apparatus using a movable module having a configuration in which 30s and 30t are cylindrical, the case 18 is a rectangular tube, and the lens driving magnet 17 is disposed at a corner portion of the case 18. .
  • the example in which the present invention is applied to the photographing optical device 2000 used in the camera-equipped mobile phone has been described.
  • the example in which the present invention is applied to the photographing optical device 2000 used in a thin digital camera or the like is described. Also good.
  • the lens driving mechanism 5 that magnetically drives the movable body 3 including the lens 121 in the optical axis direction is supported on the support 2 in the movable module 1000.
  • the present invention may be applied to a fixed focus type optical imaging device in which the lens driving mechanism 5 is not mounted on the movable module 1000.

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  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Studio Devices (AREA)
  • Adjustment Of Camera Lenses (AREA)

Abstract

L'invention porte sur un dispositif optique de photographie, qui est apte à corriger de façon fiable un mouvement non intentionnel de la main d'un utilisateur par amélioration de la constitution d'un mécanisme d'entraînement d'unité d'appareil photo pour corriger la déviation d'une unité d'appareil photo. Pour qu'une unité d'appareil photo (1) soit amenée à être basculée pour corriger le mouvement non intentionnel, un dispositif optique de photographie (200) comprend un premier mécanisme d'entraînement d'unité d'appareil photo (250x) et un second mécanisme d'entraînement d'unité d'appareil photo (250y), qui sont disposés au niveau de deux parties latérales intercalant une partie pivot (225) de façon à composer une paire entre elles. Dans ces mécanismes d'entraînement d'unité d'appareil photo, des aimants d'entraînement d'unité d'appareil photo (240x et 240y) sont maintenus sur le côté de l'unité d'appareil photo (1) sous forme de côté de corps mobile, et des bobines d'entraînement d'unité d'appareil photo (230x et 230y) sont maintenues sur le côté d'un corps fixe (210). L'unité d'appareil photo (1) est poussée vers la partie pivot (225) par un ressort de suspension à la cardan (280), qui comporte une pluralité de parties bras (287) s'étendant mutuellement dans la même direction périphérique.
PCT/JP2009/001912 2008-04-30 2009-04-27 Unité optique ayant une fonction de correction de déviation, et dispositif optique de photographie Ceased WO2009133690A1 (fr)

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US12/916,918 US8238736B2 (en) 2008-04-30 2010-11-01 Optical unit with shake correcting function and photographic optical device

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JP2008147187A JP5106254B2 (ja) 2008-06-04 2008-06-04 撮影用光学装置
JP2008334723A JP5140572B2 (ja) 2008-04-30 2008-12-26 振れ補正機能付き光学ユニット
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