JP2006309081A - Blur correction device and portable device with camera using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small and low power consumption blur correction device having a simple structure and capable of performing blur correction effectively, and a camera-equipped portable device using the same.
A reflection member, a shake correction device main body, one end of which is fixed to the shake correction device main body, two drive means for tilting the reflection member about two orthogonal axes, and a part of the drive means. Shake correction having two pressing members 18 and 18 which are fixed to the apparatus main body and whose other portions are in contact with or connected to the two portions of the reflecting member, respectively, and which are driven by the driving means to give displacement to the reflecting member. In the apparatus, the other end of each driving means is a fixed portion 29 to the shake correction device main body on each pressing member 18, and a contact or connection portion (reflecting member base pressing position 22) with the reflecting member. Each of the driving means is arranged so as to be positioned in the middle part (on the pressing member protrusion 21).
[Selection] Figure 4

Description

  The present invention relates to a shake correction device used to prevent image quality degradation caused by hand vibration during shooting, and more particularly to a device that performs shake correction by swinging a reflecting member of a bending optical system and the same. The present invention relates to a camera-equipped mobile device using a camera.

  When handheld shooting is performed with a shooting device such as a camera, vibration may be applied to the shooting device due to camera shake vibration at the time of shooting, and an image captured by the image sensor may be blurred, resulting in a blurred image. This image blur is particularly noticeable when shooting in a dark place or telephoto shooting.

  In order to prevent such image blurring, a technique has been proposed in which external vibration is detected and the optical system inside the camera is dynamically displaced so as to cancel the influence of the vibration on image blurring. In this case, highly accurate displacement control of the blur correction optical system is required.

For example, as a method of displacing an optical system in a conventional bending optical system, a method of calculating and displacing a necessary tilt angle of a shake correction optical system based on a camera body shake detected by a camera shake detection unit has been proposed. . Here, as a driving method of the optical system, a method of directly using the displacement of the piezoelectric element has been proposed (Patent Document 1).
JP 2004-219930 A

  However, the above-described prior art has the following problems.

  Since the displacement amount of the piezoelectric element is generally small, in the conventional method of directly using the displacement of the piezoelectric element, in order to obtain the tilt amount of the reflecting member necessary for blur correction, the size of the piezoelectric element should be increased. It was necessary to apply a high voltage. The large size and high power consumption of the shake correction device have been obstacles when used for portable devices.

  In general, there is hysteresis in the piezoelectric element, and the displacement value with respect to the applied voltage does not correspond one-to-one. When a piezoelectric material with a large amount of displacement with respect to the applied voltage (a material with a large piezoelectric constant) is used as the drive source, the hysteresis is large. Therefore, in order to control the amount of displacement with high accuracy, an external device for detecting the displacement is used. Detection means is required. On the other hand, when a piezoelectric material having a small hysteresis (a material having a small piezoelectric constant) is used as a driving source, the amount of displacement with respect to the applied voltage is small, and thus a high voltage is required to obtain the necessary displacement.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a compact, low power consumption blur correction apparatus having a simple structure and capable of effectively performing blur correction, and the same. It is to provide a mobile device with a camera used.

  In order to achieve the above object, the shake correction apparatus of the present invention includes a reflecting member, a driving unit that tilts the reflecting member with respect to two orthogonal axes, and a displacement of the driving unit that is enlarged and transmitted to the reflecting member. And a pressing member to be provided.

  According to the blur correction device having the above configuration, since the pressing member for enlarging the displacement of the driving unit and transmitting it to the reflecting member is provided, the displacement of the reflecting member with respect to the displacement of the driving unit is enlarged. Even when the size of the driving means and the applied voltage are not increased, it is possible to obtain the tilt amount of the reflecting member necessary for blur correction.

  Further, the blur correction device of the present invention includes a reflection member, a blur correction device main body, two driving means fixed at one end to the blur correction device main body, and tilting the reflection member about two orthogonal axes, A part of which is fixed to the main body of the shake correction device, and another part of which is in contact with or connected to two portions of the reflecting member, and two pressing members that are driven by the driving means to apply displacement to the reflecting member; The other end of each driving means is located on the intermediate portion between the fixing portion to the shake correcting device main body and the contact or connecting portion with the reflecting member on each pressing member. Further, each of the driving means is arranged.

  According to the shake correction apparatus having the above-described configuration, the other end of each driving unit is positioned on the intermediate portion between the fixing portion to the shake correction apparatus body and the contact or connection portion of the reflection member on each pressing member. In addition, since each driving unit is arranged, the displacement of the reflecting member with respect to the displacement of the driving unit is enlarged, so that even when the size of the driving unit and the applied voltage are not increased, the blur correction is performed. It is possible to obtain the necessary tilt amount of the reflecting member.

  In the blur correction device of the present invention, the longitudinal direction of each pressing member is parallel to a line connecting the tilt center position of the reflecting member and the location where the pressing member and the reflecting member are connected. It is characterized by being.

  According to the shake correction apparatus having the above-described configuration, interference with the other axis when displaced on one tilt axis can be reduced, so that highly accurate displacement control is possible.

  Furthermore, the shake correction device of the present invention has a preload portion protrusion that receives a pressing force from a preload member provided in the shake correction device body on an extension connecting the pressing position of the reflection member and the tilt center position. To do.

  According to the blur correction device having the above-described configuration, even when one pressing member is displaced, the displacement of the other preload portion protrusions that are not on the extension from the tilt center position is not affected. Therefore, the reflecting member can be held at a stable position.

  Furthermore, the blur correction device of the present invention is characterized in that either the reflecting member or the pressing member has a protruding portion, and the reflecting member and the pressing member are in point contact with the protruding portion.

  According to the blur correction device having the above configuration, the reflecting member is not fixed, and interference with the other axis when displaced on one tilt axis can be prevented.

  Furthermore, in the shake correction apparatus, the driving unit may be a piezoelectric element.

  Piezoelectric elements are suitable for driving means because of their high reactivity and easy miniaturization.

  Furthermore, a camera-equipped mobile device comprising the blur correction device is provided.

  According to the camera-equipped mobile device having the above-described configuration, it is possible to achieve downsizing and low power consumption.

  As is clear from the above, according to the shake correction apparatus of the present invention, it is possible to effectively perform shake correction with a simple configuration even when the size of the driving means and the applied voltage are not increased.

  Moreover, according to the portable device with a camera using the shake correction apparatus according to the present invention, it is possible to provide a portable device with a camera that achieves miniaturization and low power consumption.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment.

  First, a mobile phone with a camera will be described as an example of a mobile device with a camera using the shake correction apparatus of the present invention with reference to FIGS.

  FIG. 14 is a perspective view showing a first photographing form of a mobile phone incorporating the shake correction apparatus of the present invention, and FIG. 15 is a perspective view showing a second photographing form in the same mobile phone. FIG. 16 is a block diagram showing the main components of a camera-equipped mobile phone using the shake correction apparatus of the present invention.

  In FIG. 16, reference numeral 200 denotes a camera-equipped mobile phone, 101 denotes a first angular velocity detection sensor as an example of a blur detection sensor including a gyro sensor, 102 denotes the second angular velocity detection sensor, and 103 denotes first and second angular velocity detection sensors. An HPF (High Pass Filter) 104 that removes the DC component of the angular velocity signals from 101 and 102, 104 an AMP (amplifier) that amplifies the angular velocity signal from the HPF 103, and 105 an angular signal by integrating the angular velocity signal from the AMP 104. , An integration circuit 120 for receiving the angle signal from the integration circuit 105 and outputting a control signal; 106, a drive circuit for outputting a drive signal based on the control signal from the control unit 120; The drive means 9 driven by the drive signal from the drive circuit 106 is controlled by the drive means 17. This is a shake correction device. Reference numeral 30 denotes an optical system of the camera unit, 40 denotes a CCD (Charge Coupled Device) type image pickup device in which an image of a subject is photographed via the optical system 30, and 107 denotes from the CCD type image pickup device 40. An A / D converter for A / D converting an analog image signal, 108 a digital signal processing unit for processing a digital signal from the A / D converter 107, and 109 for storing an image signal-processed by the digital signal processing unit 108 Memory.

  In the camera-equipped mobile phone 200 having the above-described configuration, the shake correction device 9 drives the driving unit 17 with the drive signal output from the drive circuit 106 in accordance with the change in the angle signal from the integration circuit 105. The reflecting member is swung in two orthogonal directions (pitching direction and yawing direction). After that, it is detected that the first photographing means 50 in FIG. 14 or the second photographing means 51 shown in FIG. 15 is pushed, passes through the reflecting member of the blur correction device 9 and the optical system 30, and is CCD type. An analog image signal imaged on the image sensor 40 is converted into a digital signal by the A / D converter 107 and predetermined signal processing such as image compression is performed by the digital signal processing unit 108. Saved.

  Next, a first imaging mode in which imaging is performed with the imaging device lid 53 and the imaging device main body 54 opened will be described with reference to FIG. Here, a camera unit (not shown) is attached to the back surface side of the photographing apparatus main body 54, and by pushing the first photographing means 50, an image is photographed as described above. Further, the shaking vibration in the pitching direction at this time is detected by the first angular velocity detection sensor 101, and the shaking vibration in the yawing direction is detected by the second angular velocity detection sensor.

  On the other hand, in the second photographing mode in which the photographing device lid 53 and the photographing device main body 54 are closed as shown in FIG. 15, the second photographing means 51 is pressed, and the image is photographed similarly. In the figure, 52 is a camera unit. The shaking vibration in the pitching direction at this time is detected by the second angular velocity detection sensor 102, and the shaking vibration in the yawing direction is detected by the first angular velocity detection sensor 101.

  Next, the configuration of the camera unit 52 of the present invention will be described with reference to FIGS.

  FIG. 12 is a diagram showing the camera unit 52 built in the camera-equipped mobile device shown in FIGS. 14 and 15. In the camera unit 52, there are an optical system 30, a shake correction device 9, a CCD type image pickup device 40, a zoom mechanism that performs zooming by changing the lens interval, a passive autofocus mechanism, A shutter and the like are incorporated, and all the mechanisms are fixed to the camera unit 52.

  FIG. 13 is a perspective view of the main part for explaining the internal components of the camera unit 52. FIG. Here, the light beam incident from the direction of the arrow in the figure is bent at a right angle by the reflecting member main body 11 of the blur correction device 9, passes through the optical system 30, and is condensed on the CCD type image pickup device 40, which is an image pickup device. Tied. Since the following image processing method is the same as that described above, the description thereof will be omitted.

  Next, a shake correction apparatus that swings the reflecting member body 11 will be described with reference to FIGS.

  FIG. 1 is a perspective view of a shake correction apparatus according to the first embodiment of the present invention, and FIG. 2 is an exploded perspective view of the shake correction apparatus according to the first embodiment of the present invention. FIG. 3 is a view showing the arrangement relationship of the central axis 13, the reflection member base projection 14 and the preload projection 15 when the reflection member base 12 is viewed from above, and FIG. 4 is a first embodiment of the present invention. It is a principal part top view of the blurring correction apparatus which is a form.

  In FIG. 1, the reflecting member 10 includes a reflecting member body 11 and a reflecting member base 12, and the reflecting member base 12 is bonded and fixed to the back surface of the reflecting member body 11. Further, the central shaft 13 shown in FIG. 2 is fixed to the reflecting member base 12 at one end and the shake correction device base 16 at the other end. As the driving means 17 for giving displacement to the reflecting member base 12, a laminated piezoelectric element is used, and when a voltage is applied to the piezoelectric element, it is in a direction perpendicular to the back surface of the reflecting member body 11 as indicated by an arrow in FIG. Displace. One end of the driving means 17 is in contact with a pressing member 18 (shown in FIG. 2) provided on the shake correction device base 16 (not fixed. The same applies in the following description). The other end is bonded and fixed to the driving means fixing member 20. Here, the shake correction apparatus main body 31 includes a shake correction apparatus base 16 and a drive means fixing member 20, and the shake correction apparatus base 16 and the drive means fixing member 20 are fixed by screws. Further, the blur correction device base 16 is fixed to a camera unit 52 (shown in FIG. 13).

  Here, the piezoelectric element used as the driving means of this embodiment has a risk of damaging the polarization state of the element when a voltage in the direction opposite to the polarization is applied. It is necessary to apply a voltage in the direction. Therefore, in order to tilt the reflecting member in the forward / reverse direction, for example, the initial position is set to a position of 15V, and the applied voltage of the piezoelectric element is changed to 0V-30V, thereby moving the reflecting member in the forward / reverse direction. Can be tilted.

  The preload portion protrusion 15 is fixed on the reflecting member base 12, and applies a preload to the contact portion between the reflecting member base 12 and the pressing member 18 by contacting the preload member 19. Thereby, the reflecting member 10 is held at a stable position. The preload member 19 has a plate spring shape, one end applies a preload to the preload portion projection 15, and the other end is fixed to the shake correction device base 16 by screws.

  Subsequently, the arrangement relationship of the central shaft 13, the reflection member base portion protrusion 14, and the preload portion protrusion 15 attached to the reflection member base 12 will be described with reference to FIG. 3. In FIG. 3, the reflecting member base 12 is provided with a central shaft 13 at a substantially central portion thereof, and a central position (tilt center position) 24 of the central shaft 13, a reflecting member base projection 14 and a pressing member 18 (not shown). Are arranged so as to form apex angles of right-angled isosceles triangles, respectively.

  Further, since the reflecting member base 12 and the pressing member 18 are in contact with each other by the reflecting member base projection 14 and the tip of the reflecting member base projection 14 is spherical, the reflecting member base projection 14 and the pressing member 18 are pressed. Point contact is made with the member 18. Therefore, the reflecting member base 12 is not fixed, and interference with the other axis when displaced on one tilt axis can be prevented.

  Further, a preload portion protrusion 15 is provided on the extension connecting the reflecting member base portion protrusion 14 and the center position 24 of the central shaft 13. For this reason, even if one reflection member base part protrusion 14 displaces, it does not affect the displacement of the other preload part protrusion 15 which is not on the extension line with the central axis 13.

  Here, the preloading portion protrusion 15 and the preloading member 19 (not shown) come into contact with each other at the preloading position 23, and the preloading member 19 is deformed to apply a force in the downward direction of FIG. The contact between the member base projection 14 and the pressing member 18 can always be maintained. The preload portion protrusion 15 also has a spherical surface in contact with the preload member 19 and is in point contact with the preload member 19. Therefore, it is not affected by the displacement of the reflection member base portion protrusion 14 or the displacement of the other preload portion protrusion 15.

  Here, as the material of the central shaft 13, when the reflecting member base portion protrusion 14 is displaced in the direction perpendicular to the paper surface of FIG. 3, the central shaft 13 is stretched in the longitudinal direction of the central shaft as a result of receiving a tensile load. Since the tilting amount of the reflecting member is reduced or is not tilted in the worst case, a metal or a resin material which is a material having high tensile rigidity is desirable.

  Subsequently, a displacement enlarged portion of the shake correction apparatus of the present embodiment will be described with reference to FIG.

  In FIG. 4, the pressing member 18 has a cantilever shape, and a piezoelectric element which is a driving means (not shown) is provided on the pressing member protrusion 21. Here, by applying a displacement to the pressing member protrusion 21, the pressing member 18 is bent and deformed in the direction perpendicular to the paper surface.

  At this time, the pressing member protrusion position 21 is at an intermediate portion between the fixing portion 29 of the pressing member to the shake correction apparatus main body and the reflecting member base pressing position 22 positioned immediately above the reflecting member base protrusion (not shown). It is arranged to be located. As shown in FIG. 4, the distance from the fixing portion 29 of the pressing member to the shake correction device main body to the pressing member protrusion 21 is L1, and the pressing reflection member base pressing position from the fixing portion 29 of the pressing member to the shake correction device main body is set to L1. When the distance to 22 is L2, in this embodiment, L1 = 1 mm and L2 = 2 mm. Here, when the displacement of the drive means (not shown) is 2 μm, a displacement of 4 μm, which is twice the displacement of the drive means, is generated at the reflecting member base pressing position 22, so the displacement of the drive means is directly used. The tilt amount of the reflecting member can be doubled as compared with the case of doing so. Further, assuming that the distance from the reflecting member base pressing position 22 to the central axis 13 is L3, in this embodiment, L3 = 1 mm. A smaller L3 is desirable because the displacement of the reflecting member base becomes larger. However, if L3 is too small, the stability of the reflecting member base 12 may be impaired.

  According to the present embodiment, the voltage applied to the piezoelectric element can be halved compared to the case where the displacement of the piezoelectric element is directly used. Alternatively, the lamination thickness of the piezoelectric elements for generating the same displacement can be halved. Therefore, according to the present embodiment, it is possible to provide a shake correction apparatus that has a great effect on reducing drive voltage and reducing the size of the shake correction apparatus.

  Next, a second embodiment of the present invention will be described with reference to FIGS. Here, the same parts as those in the previous embodiment will be described using the same reference numerals.

  FIG. 5 is a perspective view of a shake correction apparatus according to the second embodiment of the present invention, and FIG. 6 is an exploded perspective view of the shake correction apparatus according to the second embodiment of the present invention. FIG. 7 is a top view of the main part of the shake correction apparatus according to the second embodiment of the present invention. Further, FIG. 8 is a diagram for explaining the positional relationship between the central axis, the reflecting member base pressing position, and the pressing member in the second embodiment of the present invention, and FIG. 9 shows the pressing member from the A direction (shown in FIG. 8). FIG. Further, FIG. 10 is a diagram for explaining the positional relationship between the central axis, the reflecting member base pressing position, and the pressing member in the comparative example, and FIG. 11 is a diagram of the pressing member viewed from the C direction (shown in FIG. 10).

In FIG. 5, the reflecting member 10 includes a reflecting member body 11 and a reflecting member base 12, and the reflecting member base 12 is bonded and fixed to the back surface of the reflecting member body 11. Further, as shown in FIG. 6, motion compensation device base 16 is composed of a motion compensation device base body 16 ₁ and the pressing member fixing member 16 ₂ which, with the shake correction base body 16 ₁ and the pressing member fixing member 16 ₂ Are integrated by bonding or the like. Further, the central shaft 13 shown in FIG. 6 is fixed to the reflecting member base 12 at one end and the shake correction device base 16 at the other end. As the driving means 17 for giving displacement to the reflecting member base 12, a laminated piezoelectric element is used, and when a voltage is applied to the piezoelectric element, it is in a direction perpendicular to the back surface of the reflecting member main body 11 as indicated by an arrow in FIG. Displace. One end of the driving means 17 is in contact with a pressing member 18 provided on the shake correction apparatus base 16, and the other end is adhesively fixed to the driving means fixing member 20. Further, the driving means fixing member 20 is fixed to the shake correction device base 16, and this shake correction device base 16 is fixed to a camera unit 52 (shown in FIG. 13).

  Here, the reflecting member base portion protrusion 14 of the reflecting member base 12 and the pressing member 18 are connected (fixed) at the reflecting member base pressing position 22 (shown in FIG. 7). Therefore, according to the present embodiment, since the reflecting member base 12 is supported at the three locations of the central shaft 13 and the two reflecting member base portion protrusions 14, it is not necessary to apply preload, and the number of parts can be reduced. It becomes possible.

  Then, the displacement mechanism of this embodiment is demonstrated using FIG.

  In FIG. 7, the pressing member 18 has a cantilever shape, and a piezoelectric element which is a driving means (not shown) is provided on the pressing member protrusion 21. Here, by applying a displacement to the pressing member protrusion 21, the pressing member 18 is bent and deformed in the direction perpendicular to the paper surface. Here, the reflecting member base 12 and the pressing member 18 are connected at the reflecting member base pressing position 22.

  At this time, the pressing member protrusion position 21 is at an intermediate portion between the fixing portion 29 of the pressing member to the shake correction apparatus main body and the reflecting member base pressing position 22 positioned immediately above the reflecting member base protrusion (not shown). It is arranged to be located. As shown in FIG. 7, the distance from the fixing portion 29 of the pressing member to the shake correcting device main body to the pressing member protrusion 21 is L1 ′, and the pressing reflecting member base pressing from the fixing portion 29 of the pressing member to the shake correcting device main body is performed. Assuming that the distance to the position 22 is L2 ′, in this embodiment, L1 ′ = 1 mm and L2 ′ = 2 mm. Here, when the displacement of the drive means (not shown) is 2 μm, a displacement of 4 μm, which is twice the displacement of the drive means, is generated at the reflecting member base pressing position 22, so the displacement of the drive means is directly used. The tilt amount of the reflecting member can be doubled as compared with the case of doing so. Further, when the distance from the reflecting member base pressing position 22 to the central axis 13 is L3 ′, in this embodiment, L3 ′ = 1 mm. A smaller L3 'is desirable because the displacement of the reflecting member base becomes larger. However, if L3 'is too small, the stability of the reflecting member base 12 may be impaired.

  According to the present embodiment, the voltage applied to the piezoelectric element can be halved compared to the case where the displacement of the piezoelectric element is directly used. Alternatively, the lamination thickness of the piezoelectric elements for generating the same displacement can be halved. Therefore, according to the present embodiment, it is possible to provide a shake correction apparatus that has a great effect on reducing the drive voltage and reducing the size of the shake correction apparatus.

  Here, as shown in FIG. 8, a line connecting the longitudinal direction of the first pressing member 25 (indicated by an arrow in the drawing) and the central shaft 13 and the reflecting member base pressing position 22 of the first pressing member 25. Are arranged in parallel, and similarly, the longitudinal direction of the second pressing member 26 (indicated by an arrow in the figure) and the central axis 13 and the reflecting member base pressing position 22 of the second pressing member 26 are connected. It arrange | positions so that a line may become parallel. Thereby, when the tip of one first pressing member 25 is displaced, crosstalk due to deformation of the other second pressing member 26 can be suppressed.

  Hereinafter, the reason for this will be described with reference to FIGS.

  As shown in FIG. 10, the longitudinal direction of the first pressing member 27 (indicated by an arrow in the drawing) and the line connecting the central shaft 13 and the reflecting member base pressing position 22 of the first pressing member 27 are perpendicular to each other. Similarly, the longitudinal direction of the second pressing member 28 (indicated by an arrow in the drawing) and a line connecting the central axis 13 and the reflecting member base pressing position 22 of the second pressing member 28 are When arranged so as to be vertical, when the tip of one first pressing member 27 is displaced, the other second pressing member 28 is deformed as shown in FIG.

  FIG. 11 is a view of the second pressing member 28 shown in FIG. 10 as viewed from the C direction. In FIG. 11, the dotted line indicates the position of the second pressing member 28 before the first pressing member 27 is displaced, the solid line indicates the position of the second pressing member 28 after the first pressing member 27 is displaced, and the point D indicates the first. The displacement of the reflecting member base pressing position 22 on the two pressing members 28 is shown. When the tip of one of the first pressing members 27 is displaced, the central shaft 13 (shown in FIG. 10) is deformed by the bending moment, but the central shaft 13 hardly expands, whereas the reflecting member base The position of the second pressing member 28 connected to is lowered by bending deformation. As a result, crosstalk is generated between the central shaft 13 and the second pressing member 28 due to the deformation of the first pressing member 27.

  On the other hand, as shown in FIG. 8, the line connecting the longitudinal direction of the first pressing member 25 (indicated by an arrow in the drawing) and the central axis 13 and the reflecting member base pressing position 22 of the first pressing member 25 is parallel. Similarly, a line connecting the longitudinal direction of the second pressing member 26 (indicated by an arrow in the drawing) and the central shaft 13 and the reflecting member base pressing position 22 of the second pressing member 26 is In the case of being arranged in parallel, when the tip of one first pressing member 25 is displaced, the other second pressing member 26 is deformed as shown in FIG.

  FIG. 9 is a view of the second pressing member 26 shown in FIG. 8 as viewed from the A direction. In FIG. 9, the dotted line indicates the position of the second pressing member 26 before the first pressing member 25 is displaced, the solid line indicates the position of the second pressing member 26 after the first pressing member 25 is displaced, and the point B indicates the first position. The displacement of the reflecting member base pressing position 22 on the two pressing members 26 is shown. As shown in FIG. 9, when the tip of one first pressing member 25 is displaced, the other second pressing member 26 follows a line connecting the central shaft 13 and the reflecting member base pressing position 22 of the second pressing member 26. It will be displaced to the center and torsionally deform. For this reason, since the displacement of the reflecting member pressing position 22 of the second pressing member 26 becomes substantially zero, the crosstalk of the other second pressing member 26 when the first pressing member 25 is displaced can be eliminated. .

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect.

  For example, the reflecting member may be driven by an appropriate actuator (for example, an electrostatic actuator) other than the piezoelectric element. In addition, the reflecting member is not limited to one that is driven by an angular change in two directions around a single point. For example, the reflecting member may be supported and driven using three or more piezoelectric elements, and the central axis may be eliminated. .

  In the above embodiment, the openable camera-equipped mobile phone has been described. However, the present invention is similarly applied to other types of mobile phones such as a mobile phone in which the display unit is rotated or a straight type mobile phone. And similar effects can be obtained.

  Furthermore, in the above-described embodiment, the camera-equipped mobile phone has been described as the camera-equipped mobile device. However, the camera-equipped mobile device is not limited to this, and a PDA (Personal Digital Assistant) having a photographing function or the like can be used. It may be a portable device.

  According to the shake correction apparatus of the present invention, it is possible to obtain the tilt amount of the reflecting member necessary for shake correction with a simple configuration even when the size of the driving means and the applied voltage are not increased. Moreover, according to the portable device with a camera provided with the shake correction apparatus of the present invention, it is possible to realize a portable device with a camera that achieves miniaturization and low power consumption.

  The blur correction device of the present invention can be applied to all portable devices with a camera. In particular, it is possible to incorporate a blur correction mechanism in a small photographic device suitable for portable use that is difficult to drive at high voltage on the premise of battery driving. It becomes possible.

It is a perspective view which shows the blurring correction apparatus which is the 1st Embodiment of this invention. It is a disassembled perspective view which shows the blurring correction apparatus which is the 1st Embodiment of this invention. It is a figure explaining the arrangement | positioning relationship of the central axis, the reflection member base part protrusion, and the preload part protrusion in the blurring correction apparatus which is the 1st Embodiment of this invention. It is a principal part top view which shows the blurring correction apparatus which is the 1st Embodiment of this invention. It is a perspective view which shows the blurring correction apparatus which is the 2nd Embodiment of this invention. It is a disassembled perspective view which shows the blurring correction apparatus which is the 2nd Embodiment of this invention. It is a principal part top view which shows the blurring correction apparatus which is the 2nd Embodiment of this invention. It is a figure explaining the arrangement | positioning relationship of the central axis in the 2nd Embodiment of this invention, a reflection member base press position, and a press member. It is the figure which looked at the 2nd press member shown in FIG. 8 from the A direction. It is a figure explaining the arrangement | positioning relationship of the central axis in a comparative example of this invention, a reflection member base press position, and a press member. It is the figure which looked at the 2nd press member shown in FIG. 10 from the C direction. It is a perspective view which shows the external appearance of the bending type camera unit incorporating the blurring correction apparatus which is embodiment of this invention. It is a perspective view which shows components arrangement | positioning of the bending optical system carrying the blurring correction apparatus which is embodiment of this invention. It is a perspective view explaining the 1st imaging | photography form of the mobile phone with a camera incorporating the blurring correction apparatus which is embodiment of this invention. It is a perspective view explaining the 2nd imaging | photography form of the mobile phone with a camera incorporating the blurring correction apparatus which is embodiment of this invention. It is a block diagram which shows the main components of the mobile telephone with a camera which incorporated the blurring correction apparatus which is embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 9 ... Shake correction apparatus 10 ... Reflection member 11 ... Reflection member main body 12 ... Reflection member base 13 ... Center axis 14 ... Reflection member base part protrusion 15 ... Preload part protrusion 16 ... Blur correction apparatus base 16 ₁ ... Blur correction apparatus base main body 16 DESCRIPTION OF SYMBOLS ₂ ... Pressing member fixing member 17 ... Driving means 18 ... Pressing member 19 ... Preloading member 20 ... Driving means fixing member 21 ... Pressing member protrusion 22 ... Reflecting member base pressing position 23 ... Preloading position 24 ... Center axis center position (tilt center position) )
DESCRIPTION OF SYMBOLS 25 ... 1st press member 26 ... 2nd press member 27 ... 1st press member 28 ... 2nd press member 29 ... Fixing part to the shake correction apparatus main body 30 ... Optical system 31 ... Shake correction apparatus main body 40 ... CCD Type imaging device 50... First imaging means 51. Second imaging means 52... Camera unit 53 .. Imaging equipment lid 54 .. Imaging equipment main body 101. First angular velocity detection sensor 102 ... Second angular velocity detection sensor 103 ... HPF (high pass filter) )
104 ... AMP (Amplifier)
DESCRIPTION OF SYMBOLS 105 ... Integration circuit 106 ... Drive circuit 107 ... A / D converter 108 ... Digital signal processing part 109 ... Memory 120 ... Control part 200 ... Mobile phone with a camera

Claims (7)

A blur correction apparatus comprising: a reflecting member; a driving unit that tilts the reflecting member about two axes orthogonal to each other; and a pressing member that enlarges a displacement of the driving unit and transmits the displacement to the reflecting member. A reflection member, a shake correction apparatus main body, one end fixed to the shake correction apparatus main body, two drive means for tilting the reflection member about two orthogonal axes, and a part thereof fixed to the shake correction apparatus main body In addition, in the shake correction apparatus, the other portion is in contact with or connected to each of the two portions of the reflecting member, and has two pressing members that are driven by the driving unit to apply displacement to the reflecting member.
Each driving means is positioned so that the other end of each driving means is located on an intermediate portion between each pressing member and a fixing portion to the shake correction apparatus main body and the reflection member. Is provided. The longitudinal direction of each of the pressing members is parallel to a line connecting a tilt center position of the reflecting member and a portion where the pressing member and the reflecting member are connected to each other. The image stabilizer according to 1. 4. A preloading portion projection for receiving a pressing force from a preloading member provided on a shake correction device main body on an extension connecting the pressing position of the reflecting member and a tilt center position. The blur correction device according to claim 1. Either of the said reflection member or the said press member has a projection part, The said reflection member and the said press member are in point contact in the said projection part, Any of Claim 2-4 The blur correction device according to claim 1. The blur correction apparatus according to claim 1, wherein the driving unit is a piezoelectric element. A camera-equipped mobile device comprising the shake correction device according to claim 1.

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