JP2012032810A - Light irradiation device, camera device, and mobile terminal device with camera - Google Patents

Abstract

A light irradiation device, a camera device, and a camera-equipped mobile terminal device capable of easily expanding or reducing a light irradiation range with a simple configuration.
A light irradiation apparatus according to the present invention includes a driving means for moving an irradiation lens support that supports an irradiation lens, and the driving means is a coil provided along the outer periphery of the irradiation lens support. 15 and a magnet 13 provided on the yoke 3 and arranged opposite to the outer peripheral surface of the coil 15, and by moving the irradiation lens support 7 in the optical axis direction by electromagnetic force when the coil 15 is energized, The irradiation range for the irradiation body is enlarged or reduced.
[Selection] Figure 2

Description

  The present invention relates to a light irradiation device that irradiates light to an irradiated object, a camera device including the light irradiation device, and a mobile terminal device with a camera.

Patent Document 1 discloses a light irradiation device that drives a light source support by driving means to change the light irradiation direction from a plurality of light sources. The technique described in Patent Document 1 changes the irradiation range and light distribution characteristics of an object to be irradiated by changing the light irradiation direction of a plurality of light sources.
Patent Document 2 discloses that an optical zoom function is provided in a small camera mounted on a mobile phone or the like.

JP 2007-47706 A JP 2007-53840 A

However, in the configuration in which the light irradiation directions of a plurality of light sources are changed as described in Patent Document 1, there is a problem that it is difficult to obtain a uniform light amount in the light irradiation range.
Also, when illuminating the subject during shooting with the camera, if the light irradiation range is smaller than the shooting field angle, the entire subject cannot be illuminated, and the light irradiation range is too large than the shooting field angle However, there is a problem in that light spreads wastefully and wastes electric power and causes discomfort to the surroundings due to light leakage.

  Therefore, an object of the present invention is to provide a light irradiation device, a camera device, and a camera-equipped mobile terminal device that can easily expand or reduce the light irradiation range with a simple configuration.

  According to the first aspect of the present invention, a light source provided on the fixed body, an irradiation lens that receives light from the light source and irradiates the irradiated object, and supports the irradiation lens and is movable in the optical axis direction of the irradiation lens. And a driving means for moving the irradiation lens support in the direction of the optical axis of the irradiation lens. The driving means is provided on a fixed body and a coil provided along the outer periphery of the irradiation lens support. And extending or reducing the irradiation range to the irradiated object by moving the irradiation lens support in the optical axis direction of the lens by electromagnetic force when the coil is energized. It is the light irradiation apparatus characterized.

  The invention described in claim 2 is a light source, an irradiation lens that is provided on a fixed body and receives light from the light source and irradiates the irradiated object, and supports the light source and moves the light source in the optical axis direction of the irradiation lens. A light source support provided freely, and a drive means for moving the light source support in the direction of the optical axis of the irradiation lens. The drive means is a coil provided along the outer periphery of the light source support, and a coil provided on the fixed body. And an irradiation range for the irradiated object is enlarged or reduced by moving the light source support in the optical axis direction of the irradiation lens by electromagnetic force when the coil is energized. This is a light irradiation device.

  According to a third aspect of the present invention, there is provided a light source provided on the fixed body, a reflector that receives light from the light source and reflects it toward the irradiated object, and supports the reflector and faces the optical axis of the reflected light of the reflector. A reflector support provided movably, and a drive means for moving the reflector support in the direction of the optical axis of the reflected light. The drive means includes a coil provided along the outer periphery of the reflector support, and a fixed body. It has a magnet that is installed and placed opposite to the coil, and the irradiation range for the irradiated object is expanded by moving the reflector support in the direction of the optical axis of the reflected light of the reflector by the electromagnetic force when the coil is energized Or it is the light irradiation apparatus characterized by reducing.

  According to a fourth aspect of the present invention, a light source provided on the fixed body, an irradiation lens that irradiates the irradiated body with light received on the fixed body, and a position that sandwiches the light source with respect to the irradiation lens are provided. A reflector that reflects light from the light source toward the irradiation lens, a reflector support that supports the reflector and is movable in the optical axis direction of the irradiation lens, and moves the reflector support toward the optical axis direction of the irradiation lens Drive means, and the drive means has a coil provided along the outer periphery of the reflector support and a magnet provided on the fixed body and disposed opposite to the coil, and supports the reflector by electromagnetic force when the coil is energized. The light irradiation apparatus is characterized in that the irradiation range of the irradiated object is expanded or reduced by moving the body in the optical axis direction of the lens.

  According to a fifth aspect of the present invention, a light source provided on a fixed body, an irradiation lens that receives light from the light source and irradiates the irradiated object, and a light received by surrounding the space between the irradiation lens and the light source. Reflecting toward the irradiation lens, a lens / reflector support that supports the irradiation lens and the reflector integrally, and is movable in the direction of the optical axis of the irradiation lens, and the lens / reflector support to the irradiation lens. Driving means moving in the direction of the optical axis, the driving means having a coil provided along the outer periphery of the lens / reflector support and a magnet provided on the fixed body and arranged opposite to the coil. The light irradiation apparatus is characterized in that the irradiation range to the irradiated object is expanded or reduced by moving the lens / reflector support in the optical axis direction of the lens by electromagnetic force when energized.

  The invention according to claim 6 includes the light irradiation device according to any one of claims 1 to 5 and a zoom camera having an optical zoom lens, and the zoom camera has a magnification set by movement of the optical zoom lens. The camera apparatus is characterized in that the photographing field angle is calculated, and the light irradiation device drives the driving means based on the photographing field angle information received from the zoom camera.

According to a seventh aspect of the present invention, there is provided a camera-equipped mobile terminal device including the camera device according to the sixth aspect.
The mobile terminal device refers to a mobile phone, a personal digital assistant (PDA), a notebook computer, and the like.

According to the first to fifth aspects of the present invention, the light source, the irradiation lens or the reflector, the irradiation lens and the reflector are configured to move toward the optical axis direction of the lens or the subject. The light irradiation range can be enlarged or reduced.
Since the irradiated object can be illuminated within a predetermined range by enlarging or reducing the light irradiation range, the light irradiation range can provide an equal amount of light and reduce light leakage to the surroundings.

Since the light source, the lens or the reflector, and the driving means for linearly moving the lens and the reflector in the optical axis direction of the lens are configured by the coil and the magnet, the configuration is simple and only the current supplied to the coil is controlled. Drive control can be easily performed.
Since the light from the light source is collected by the irradiation lens, the power consumption of the light source can be reduced and the power consumption can be reduced.

  According to the sixth aspect of the invention, the same effect as that of the first aspect of the invention can be achieved, and the driving unit of the light irradiation device is driven according to the shooting angle of view of the camera. Therefore, the light irradiation range can be easily expanded or reduced in conjunction with the shooting angle of view based on the optical zoom function of the camera.

  According to invention of Claim 7, the mobile terminal device with a camera which show | plays the same effect as the invention of Claim 6 can be provided.

It is a disassembled perspective view of the light irradiation apparatus which concerns on 1st Embodiment of this invention. It is a longitudinal section of the light irradiation apparatus concerning a 1st embodiment. It is an optical path diagram explaining the effect | action of the light irradiation apparatus which concerns on 1st Embodiment. It is AA sectional drawing shown in FIG. It is BB sectional drawing shown in FIG. It is a front view of the camera concerning a 1st embodiment. It is a block diagram which shows the structure of the control part of the light irradiation apparatus which concerns on 1st Embodiment, and a lens drive device. It is a disassembled perspective view of the light irradiation apparatus which concerns on 2nd Embodiment of this invention. It is a longitudinal cross-section of the light irradiation apparatus which concerns on 2nd Embodiment. It is a disassembled perspective view of the light irradiation apparatus which concerns on 3rd Embodiment of this invention. It is a perspective view of the light source support body equipped with the light source shown in FIG. It is a longitudinal cross-section of the light irradiation apparatus which concerns on 3rd Embodiment. It is a disassembled perspective view of the light irradiation apparatus which concerns on 4th Embodiment of this invention. It is a longitudinal section of the light irradiation apparatus concerning a 4th embodiment.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS. The light irradiation device 1 according to the present embodiment is a light irradiation device for an optical zoom camera 4 incorporated in a mobile phone 2 as shown in FIG. Used to irradiate the subject with light in the dark.

As shown in FIGS. 1 and 2, the light irradiation device 1 includes a yoke 3 as a fixed body, an irradiation lens support 7 having an irradiation lens 6 mounted on the inner periphery, and an optical axis direction of the irradiation lens 6 in the yoke 3. A frame 8 and a front spring 9 disposed on the front side (hereinafter simply referred to as “front side”), and a base 5 disposed on the rear side of the irradiation lens 6 in the optical axis direction (hereinafter simply referred to as “rear side”) in the yoke 3. And a rear spring 11, and a spacer (insulating material) 17 is disposed between the rear spring 11 and the yoke 3. A light source body 10 on which a light source 12 is arranged is fixed to the base 5.
The irradiation lens 6 is a condenser lens, and is a convex lens in the present embodiment.

The yoke 3 has an annular shape and the outer periphery is a square in plan view when viewed from the front side, and the inner periphery is circular in plan view. The outer peripheral wall 3a, the inner peripheral wall 3b, and the outer peripheral wall 3a and the inner peripheral wall 3b are connected. The outer peripheral wall 3a, the inner peripheral wall 3b, and the connecting wall 3c are substantially U-shaped in cross section.
A magnet 13 is fixed to each of the four corners 3d of the yoke 3 on the inner peripheral side thereof.

  The magnet 13 has different magnetic poles on the inner peripheral side and the outer peripheral side. For example, the inner peripheral surface is an N pole and the outer peripheral surface is an S pole.

  The irradiation lens support 7 has a substantially cylindrical shape, and is provided on the inner peripheral side of the yoke 3 so as to be movable in the optical axis direction X of the irradiation lens 6 as shown in FIG. A coil 15 wound along the circumferential direction is attached to the outer periphery of the irradiation lens support 7.

  As shown in FIG. 1, the front spring 9 has a flat plate shape in a natural state before assembly, and is arranged on the outer peripheral side portion 9 a forming a rectangular shape in plan view, and on the inner periphery of the outer peripheral side portion 9 a, and is circular in plan view. The inner peripheral side portion 9b and the four arm portions 9c that connect the outer peripheral side portion 9a and the inner peripheral side portion 9b. In the present embodiment, the front spring 9 has an outer peripheral side portion 9a and an inner peripheral side portion 9b divided into four in the circumferential direction.

  The rear spring 11 has a flat plate-like natural state before assembly, and an outer peripheral side portion 11a that has a rectangular shape in plan view, and an inner peripheral side portion 11b that is arranged on the inner periphery of the outer peripheral side portion 11a and has a circular shape in plan view. And four arm portions 11c that connect the outer peripheral side portion 11a and the inner peripheral side portion 11b. In addition, as for the rear side spring 11, the outer peripheral side part 11a and the inner peripheral side part 11b are divided | segmented into three in the circumferential direction.

The outer peripheral side portion 9 b of the front spring 9 is sandwiched between the frame 8 and the yoke 3, and the inner peripheral side portion 9 a is fixed to the front end of the irradiation lens support 7. The outer peripheral side portion 11 b of the rear spring 11 is sandwiched between the base 5 and the rear spacer 17, and the inner peripheral side portion 11 a is fixed to the rear end of the irradiation lens support 7. Thus, the irradiation lens support 7 is supported by the front spring 9 and the rear spring 11 so as to be movable in the front-rear direction.
When the irradiation lens support body 7 moves forward, the irradiation lens support body 7 generates an electromagnetic force generated between the coil 15 and the magnet 13, and the resultant force of the front and rear springs 9 and 11. Stops at the position where the and hung.

The light source 12 is an LED (light emitting diode) in the present embodiment, but may be a flashlight using a discharge tube, a light source that emits laser light, or the like.
The light source body 10 is provided with a base for supplying current to the LEDs, and the current supplied by the control unit 14 is controlled.

  The irradiation lens 6 is a divergence angle conversion element that transmits light from the light source 12 and converts the divergence angle. In the present embodiment, the light source 12 uses an LED having a large divergence angle. Therefore, the irradiation lens 6 is converted as a convex lens so that the divergence angle becomes small. When the light source 12 having a small divergence angle is used, the irradiation lens 6 may be a concave lens. The irradiation lens 6 may be a combination of a plurality of lenses. Furthermore, the irradiation lens 6 may be a Fresnel lens or a lens using a diffraction grating or a hologram. When the irradiation lens 6 is such a flat lens, the thickness of the lens can be reduced, so that the light irradiation device 1 can be reduced in weight and thickness. Further, if the thickness of the light irradiation device 1 does not change, the moving range of the irradiation lens support 7 in the optical axis direction can be widened.

  In the present embodiment, the case where no current flows through the coil 15 is the case where the distance between the light source 12 and the irradiation lens 6 shown in FIG. 3 is the shortest, and the irradiation angle, that is, the divergence angle from the irradiation lens 6 is the largest. This is a case where the irradiation range with respect to the irradiation object P is the widest. When an electric current is passed through the coil 15, the irradiation lens support 7 moves forward, and the irradiation lens support 7 is composed of the resultant force of the urging forces in the front-rear direction of the front spring 9 and the rear spring 11, the coil 15 and the magnet 13. It stops at the position where the electromagnetic force generated between the two is suspended. That is, since the distance between the light source 12 and the irradiation lens 6 is longer than when no current is passed through the coil 15, the irradiation angle becomes smaller and the irradiation range on the irradiated object P becomes narrower.

Next, the optical zoom camera 4 according to the present embodiment will be described with reference to FIGS. The optical zoom camera 4 includes a lens driving device 101 that drives a zoom lens, and a substrate 104 on which an image sensor 111 is mounted.
The lens driving device 101 includes a zoom lens holder 103, a focus lens holder 105, a zoom lens holder driving unit 107 that drives the zoom lens holder 103, and a focus lens holder driving unit that drives the focus lens holder 105. 109. This lens driving device 101 is mounted on a substrate 104 on which an image sensor 111 is provided. In the present embodiment, each of the image sensors 111 is a CCD (Charge Coupled Device), but may be a CMOS (Complementary Metal Oxide Semiconductor).

  Further, as shown in FIG. 5, a zoom lens position detection unit 143 that detects the position of the zoom lens holder 103 and a focus lens position detection unit 145 that detects the position of the focus lens holder 105 are provided in the housing 113. It is provided.

  As shown in FIG. 4, the zoom lens holder 103 holds the optical zoom lens 114, the focus lens holder 105 holds the focus lens 116, and forms an image with the subject side lens 118 on the housing 113. The side lens 120 is provided so that the optical axis of the zoom lens 114 and the focus lens 116 coincide.

  Since the zoom lens driving unit 107 and the focus lens driving unit 109 have substantially the same configuration, the zoom lens driving unit 107 will be described, and the same reference numerals will be given to the portions that exhibit the same effects as the focus lens driving unit 109. Thus, the description of that part is omitted.

  The zoom lens driving unit 107 (focus lens driving unit 109) includes a vibration member 117 and a driving shaft 121 (122) arranged in the optical axis direction, and a base end 121a (122a) of the driving shaft 121 (122). ) Is fixed to the vibration member 117. The tip 121b (122b) of the drive shaft 121 (122) is held by the housing 113 by a bearing member 112 that slidably holds the drive shaft 121 (122). The bearing member 112 is made of an elastically deformable member, and is made of silicon rubber in the present embodiment. A bearing member 110 that slidably holds the drive shaft 121 (122) is also attached to the housing 113 on the base end 121a side of the drive shaft 121 (122).

  The vibration member 117 includes a piezoelectric element 123 and an elastic vibrator 119 that is bonded and fixed to the surface of the piezoelectric element 123. The base end 121a of the drive shaft 121 is bonded and fixed to the surface of the vibrator 119. Has been.

  On the other hand, as shown in FIGS. 4 and 5, a pressure contact portion 131 that is in pressure contact with the drive shaft 121 (122) is provided at one end of the zoom lens holder 103 (focus lens holder 105), as shown in FIG. The pressure contact portion 131 is in pressure contact with the side surface of the drive shaft 121 (122) by a spring 132.

  The other end portion of the zoom lens holder 103 is provided with an engagement portion 133 with the drive shaft 122 of the focus lens holder 105, and the engagement portion 133 engages with the drive shaft 122 of the focus lens holder 105, and the zoom lens holder The movement of 103 is guided. The engaging portion 133 is substantially U-shaped in cross section with the center side of the zoom lens holder 103 as the bottom, and the drive shaft 122 of the focus lens holder 105 is inserted into the U-shape.

  The other end portion of the focus lens holder 105 is provided with an engagement portion 133 with the drive shaft 121 of the zoom lens holder 103, and the engagement portion 133 engages with the drive shaft 121 of the zoom lens holder 103 to focus. The movement of the lens holder 105 is guided. The engaging portion 133 has a substantially U-shaped cross section with the center side of the focus lens holder 105 as the bottom, and the drive shaft 121 of the zoom lens holder 103 is inserted into the U shape.

  The configuration of the focus lens holder 105 is substantially the same as that of the zoom lens holder 103, and the drive shaft 122 of the focus lens holder 105 is attached to the vibration member 117 in the same manner as the drive shaft 121 of the zoom lens holder 103.

  Next, the zoom lens position detecting means 143 for detecting the position of the zoom lens holder 103 shown in FIG. 5 and the focus lens position detecting means 145 for detecting the position of the focus lens holder 105 will be described. The zoom lens position detection unit 143 and the focus lens position detection unit 145 have the same configuration, and each includes a magnetic pole member 157 in which different magnetic poles (S pole and N pole) are alternately arranged along the optical axis direction of the lens, and a magnetic field It comprises an MR sensor 159 that detects the intensity. The magnetic pole member 157 is fixed to the inner surface of the housing 113 along the drive shafts 121 and 122, and the MR sensor 159 is fixed to the holders 103 and 105. Along with this, it is possible to detect the amount and direction of movement of each holder from the reference position (or initial position).

  As shown in FIG. 6, the housing 113 is a rectangular parallelepiped as a whole, with the front side wall 115 forming a square when viewed from the front side in the optical axis direction. As shown in FIG. 5, the drive shafts 121 and 122 are located on a square diagonal line E viewed from the front side, and on the diagonal line F orthogonal to the diagonal line E, the zoom lens position detection unit 143 and the focus lens position detection are performed. Means 145 are provided.

  As shown in FIGS. 4 and 6, the front side wall 115 of the housing 113 is formed with a subject side lens holding opening 125 that holds the subject side lens 118 at the center of a square. On the diagonal line E, the drive shafts 121 and 122 are located at positions sandwiching the subject-side lens holding opening 125, and a fitting recess 127 for fitting the bearing member 112 of each drive shaft 121, 122 is formed. .

  As shown in FIG. 7, the control unit 21 of the camera 4 records the zoom setting unit 23, the shooting field angle calculation unit 25, and the calculated shooting field angle, and transmits the field angle information to the light irradiation control unit 27. An angle-of-view information recording unit 29 is provided. On the other hand, the light irradiation control unit 27 is provided with an angle-of-view information receiving unit 31 and an irradiation range control unit 33 that receive the angle-of-view information from the angle-of-view information recording unit 29.

  The zoom setting unit 23 detects the amount of movement of the zoom lens holder 103 in the lens driving device 101, and the shooting angle of view calculation unit 25 calculates the shooting angle of view of the camera as shown in FIG. Then, the calculated shooting field angle information is transmitted from the field angle information recording unit 29 to the field angle information degree receiving unit 31 of the light irradiation control unit 27. In the irradiation range control unit 33, based on the shooting field angle information, a light irradiation angle (irradiation angle) slightly larger than the shooting field angle, for example, 1 to 5 degrees larger than the shooting field angle. The irradiation lens support 7 is moved. Thereby, since the irradiation lens 6 changes an irradiation angle according to an imaging | photography angle of view, a to-be-photographed object can be illuminated in the optimal light irradiation range.

Next, the operation and effect of the light irradiation apparatus 1 according to the embodiment of the present invention will be described.
When the light irradiation device 1 is used when shooting with the camera 4, as described above, when the zoom lens holder 103 is moved to a predetermined shooting magnification position by the zoom setting unit 23, the angle-of-view calculating unit 25 correspondingly changes the camera angle. The photographing field angle is calculated, and in the light irradiation device 1, the irradiation lens support 7 is moved by the irradiation range control unit 33 so that the irradiation angle is slightly larger than the photographing field angle.
In this case, as shown in FIG. 2, in the light irradiation device 1, the electromagnetic force generated by energizing the coil 15 generates a thrust F with the magnet 13, and the irradiation lens support 7 has the front spring 9 and the rear spring 9. Stops at a position that balances the biasing force of the side spring 11.

Thereafter, a current is supplied to the light source 12 in conjunction with the shutter of the camera 4 so that the light source 12 emits light and irradiates the subject with light.
That is, according to the first embodiment, as shown in FIG. 3, the irradiation range can be enlarged or reduced by moving the position of the irradiation lens 6 in accordance with the shooting angle of view.

  According to the present embodiment, since the light from the light source 12 is collected by the irradiation lens 6, a predetermined amount of light can be obtained with respect to the subject with low power consumption, and the power consumption of the light source 12 can be reduced. it can. That is, the irradiation lens 6 is moved in the optical axis direction of the lens and changed so that the light irradiation range is enlarged or reduced in accordance with the photographing range of the camera. Can provide a sufficient amount of light.

  The drive means for linearly moving the irradiation lens 6 in the direction of the optical axis of the lens has a simple structure because it is composed of the coil 15 and the magnet 13, and only controls the current supplied to the coil 15, so that drive control is also possible. Easy to do.

  Based on the movement position of the optical zoom lens 116 of the optical zoom camera 4, the lens support 7 is moved by the irradiation range control unit 33 in accordance with the angle of view calculated by the angle of view calculation unit 25. The irradiation range can be controlled.

  Next, other embodiments of the present invention will be described. In other embodiments described below, the same reference numerals are given to the portions having the same effects as the above-described embodiments, and the same reference numerals are given to the portions. The description of the portion is omitted, and in the following description, differences from the above-described embodiment are mainly described.

  The second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, a light source support 7 a that supports a light source 12 is used instead of the irradiation lens support 7 according to the first embodiment, and the irradiation lens 6 is fixed to the frame 8. That is, in the second embodiment, in contrast to the first embodiment, the irradiation lens 6 is fixed, and the light source 12 is moved by the light source support 7a, so that the irradiation angle is changed and the light irradiation range is expanded or reduced. Reduce.

  According to the second embodiment, the same operational effects as those of the first embodiment described above can be obtained. Furthermore, since the light source 12 uses an LED and is lighter than the irradiation lens 6, according to the present embodiment in which the light source 12 is moved, the response is faster than in the first embodiment in which the irradiation lens is moved. To supply power to the light source 12, at least one of the front side spring 9 and the rear side spring 11 can be used.

A third embodiment of the present invention will be described with reference to FIGS. In the third embodiment, the light source 12 is provided on the base 5 as a fixed body, and the irradiation lens 6 is fixed to the frame 8. A reflector 19 that reflects the light from the light source 12 is provided, the reflector 19 is provided on the rear side of the irradiation lens 6, and the reflector support 7 b moves freely in the optical axis direction.
The light source 12 irradiates light in a direction opposite to the irradiated body. The reflector 19 is provided at a position sandwiching the light source 12 with respect to the irradiated body, and reflects light from the light source 12 toward the irradiated body. In the present embodiment, the reflector 19 is a concave mirror. The irradiation lens 6 is a convex lens.

According to this 3rd Embodiment, there can exist an effect similar to 1st Embodiment mentioned above.
Further, since the reflector 19 can be made lightly with aluminum or the like, in this embodiment in which the reflector support pair 7b is moved, the irradiation range is enlarged or reduced as compared with the first embodiment in which the lens support 7 is moved. To respond quickly. Further, since the irradiation angle can be set by the two members of the reflector 19 and the irradiation lens 6, the degree of freedom in design is high.

  In this embodiment, the reflector 19 is a concave mirror. However, when the light source 12 having a small divergence angle is used, it may be a convex mirror. Further, the reflector 19 may be a Fresnel mirror. The reflector 19 may be a simple plane mirror. In that case, the irradiation angle can be set only by the irradiation lens 6. Since the reflector 19 that is light and does not require wiring is provided on the reflector support 7b, the light reflector support 7b is moved, so that the response is fast and the posture of the reflector support 7b is easily stabilized. Further, the irradiation lens 6 may be omitted. That is, the irradiation range for the irradiated object is enlarged or reduced only by the reflector 19. In this case, the response for expanding or reducing the irradiation range is fast, and the weight can be reduced by the absence of the irradiation lens 6.

A fourth embodiment of the present invention will be described with reference to FIGS. In the fourth embodiment, the irradiation lens 6 and the reflector 19 are fixed to the lens / reflector support 7c, and the lens / reflector support 7c is moved in the optical axis X direction of the irradiation lens 6.
The irradiation lens 6 includes a lens body 6a and a frame portion 6b. The lens body 6a and the frame portion 6b are manufactured by integrally molding a transparent resin material. The rear boundary between the frame portion 6b and the lens body 6a forms a concave corner 6c.
The reflector 19 covers the space between the light source 12 and the irradiation lens 6, and a hole 19 a in which the light source 12 is disposed is formed at the bottom on the light source 12 side. In the present embodiment, the hole 19 a has a size slightly larger than the outer shape of the light source 12. The inner surface of the reflector 19 is formed in a surface whose longitudinal section is a parabolic shape, and light directly received from the light source 12 is reflected toward the irradiation lens 6 in parallel with the optical axis of the irradiation lens 6. .
The front end 19b of the reflector 19 is in contact with the corner 6c of the lens body 6a and the frame 6b of the irradiation lens 6 and is fixed with an adhesive.
The lens / reflector support 7c is formed in an annular shape, and is in contact with the outer surface of the reflector 19 so that the contact portion is bonded and fixed. A coil 15 is fixed to the rear end of the lens / reflector support 7c. The coil 15 has a quadrangular shape when viewed from the front side.
The yoke 3 has an inner wall 3b provided at a position corresponding to each corner 3d of the outer wall 3a, and a magnet 13 is fixed to the outer surface of each inner wall 3b. That is, as shown in FIG. 14, the coil 15 is disposed between the outer peripheral wall 3 a of the yoke 3 and the magnet 13.
An outer frame 22 is provided on the outer periphery of the yoke 3, and a mounting member 24 for mounting the light source body 10 is provided on the front surface of the base 5.

According to this 4th Embodiment, there can exist an effect similar to 1st Embodiment.
Furthermore, the space between the light source 12 and the irradiation lens 6 is covered with the reflector 19, and the light that has not been directly irradiated from the light source 12 to the irradiation lens 6 is reflected by the reflector 19 toward the irradiation lens. The light collection efficiency of the light source 12 is good.
The magnet 13 is fixed to the outer peripheral surface of the inner wall 3 b of the yoke 3, and the coil 15 is disposed between the outer peripheral wall 3 a and the magnet 13, so that the magnetic flux of the magnet 13 leaks outside the yoke 3. Can be reduced.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention. For example, the light irradiation device 1 is used as a camera flash in a camera-equipped mobile phone in the above-described embodiment, but is not limited thereto, and may be used in a microscope, a projection device, or the like.
The light irradiation device 1 is provided with a position detector for detecting the position of the irradiation lens support 7 so as to perform feedback control as to whether or not the irradiation lens support 7 is present at the set light irradiation angle. good.
In the fourth embodiment, the lens / reflector support 7 c is not limited to being fixed to the reflector 19 but may be fixed to the frame portion 6 b of the lens 6. Further, the lens 6 and the reflector 19 may be individually fixed to the lens / reflector support 7c.
In the fourth embodiment, the shape and arrangement of the coil 15, the magnet 13 and the yoke 3 may be the same as those in the first embodiment. In the first to third embodiments, the shape and arrangement of the fourth embodiment are the same. It may be configured as described above.

DESCRIPTION OF SYMBOLS 1 Light irradiation apparatus 3 Yoke 6 Irradiation lens 7 Irradiation lens support body 7a Light source support body 7b Reflector support body 7c Lens and reflector support body 12 Light source 13 Magnet 15 Coil 19 Reflector 101 Lens drive device

Claims (7)

  A light source provided on the fixed body, an irradiation lens that receives light from the light source and irradiates the irradiated object, an irradiation lens support that supports the irradiation lens and is movable in the optical axis direction of the irradiation lens, Driving means for moving the irradiation lens support in the optical axis direction of the irradiation lens, and the driving means includes a coil provided along the outer periphery of the irradiation lens support, and a magnet provided on the fixed body and disposed opposite to the coil. A light irradiation apparatus characterized in that the irradiation range to the irradiated object is expanded or reduced by moving the irradiation lens support in the optical axis direction of the lens by electromagnetic force when the coil is energized.   A light source, an irradiation lens that is provided on the fixed body and receives the light of the light source and irradiates the irradiated object, a light source support that supports the light source and that the light source is movable in the optical axis direction of the irradiation lens, Driving means for moving the light source support in the optical axis direction of the irradiation lens, and the driving means has a coil provided along the outer periphery of the light source support, and a magnet provided on the fixed body and disposed opposite to the coil. A light irradiation apparatus characterized in that the irradiation range for the irradiated object is expanded or reduced by moving the light source support in the optical axis direction of the irradiation lens by electromagnetic force when the coil is energized.   A light source provided on the fixed body, a reflector that receives light from the light source and reflects it toward the irradiated object, and a reflector support that supports the reflector and is movable in the optical axis direction of the reflected light of the reflector; Drive means for moving the reflector support in the direction of the optical axis of the reflected light, the drive means including a coil provided along the outer periphery of the reflector support, and a magnet provided on the fixed body and disposed opposite to the coil. And the irradiation range for the irradiated object is expanded or reduced by moving the reflector support toward the optical axis direction of the reflected light of the reflector by electromagnetic force when the coil is energized. Irradiation device.   A light source provided on the fixed body, an irradiation lens that irradiates the irradiated object with light received on the fixed body, and a light source that faces the irradiation lens with the light source sandwiched between the irradiation lens and the irradiation lens. A reflector that reflects, a reflector support that supports the reflector and is movable in the optical axis direction of the irradiation lens, and a drive unit that moves the reflector support in the optical axis direction of the irradiation lens; Has a coil provided along the outer periphery of the reflector support and a magnet provided on the fixed body and arranged opposite to the coil, and the reflector support is moved in the optical axis direction of the lens by electromagnetic force when the coil is energized. By doing so, the light irradiation apparatus characterized by expanding or reducing the irradiation range with respect to the irradiated object.   A light source provided on a fixed body, an irradiation lens that receives light from the light source and irradiates the irradiated object, and a reflector that surrounds a space between the irradiation lens and the light source and reflects the received light toward the irradiation lens And a lens / reflector support that supports the irradiation lens and the reflector integrally, and is movable in the optical axis direction of the irradiation lens, and a drive that moves the lens / reflector support toward the optical axis direction of the irradiation lens. And a driving means having a coil provided along the outer periphery of the lens / reflector support and a magnet provided on the fixed body and disposed opposite to the coil. A light irradiation apparatus characterized in that an irradiation range for an irradiated object is expanded or reduced by moving a reflector support in the optical axis direction of the lens.   A light irradiation apparatus according to any one of claims 1 to 5 and a zoom camera having an optical zoom lens, wherein the zoom camera calculates a shooting field angle at a magnification set by movement of the optical zoom lens, An irradiating device drives driving means based on photographing field angle information received from a zoom camera.   A camera-equipped mobile terminal device, comprising the camera device according to claim 6.

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