CN108008517B - Lens driving device, camera device and electronic equipment - Google Patents
Lens driving device, camera device and electronic equipment Download PDFInfo
- Publication number
- CN108008517B CN108008517B CN201710873389.4A CN201710873389A CN108008517B CN 108008517 B CN108008517 B CN 108008517B CN 201710873389 A CN201710873389 A CN 201710873389A CN 108008517 B CN108008517 B CN 108008517B
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- Prior art keywords
- lens
- mover
- stator
- plane
- optical axis
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- 230000003287 optical effect Effects 0.000 claims abstract description 42
- 229920005989 resin Polymers 0.000 claims abstract description 37
- 239000011347 resin Substances 0.000 claims abstract description 37
- 210000000707 wrist Anatomy 0.000 claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000003780 insertion Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 9
- 230000004907 flux Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
Classifications
-
- 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
-
- 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
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/035—DC motors; Unipolar motors
- H02K41/0352—Unipolar motors
- H02K41/0354—Lorentz force motors, e.g. voice coil motors
- H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Lens Barrels (AREA)
- Adjustment Of Camera Lenses (AREA)
- Camera Bodies And Camera Details Or Accessories (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The lens driving device (10) is provided with a stator (12), a mover (14) including a lens support (30) for supporting a lens, the mover moving in the optical axis direction of the lens toward the stator (12), a stator-side fixing portion fixed to the stator, a mover-side fixing portion fixed to the mover, a wrist portion connecting the stator-side fixing portion and the mover-side fixing portion, elastic pieces (38, 40) supporting the mover in a freely movable state toward the stator, and a resin bridging between the wrist portion and the mover and having viscoelasticity.
Description
[ field of technology ]
The invention relates to a lens driving device, a camera device and an electronic device.
[ background Art ]
Small cameras are mounted on electronic devices such as mobile phones and smart phones. Such a small camera is a device having an autofocus function, as shown in patent document 1 and patent document 2, for example, and is known.
[ patent document 1 ] U.S. patent application publication No. 2015/0153540 specification
[ patent document 2 ] JP patent publication 2011-154121A
[ invention ]
[ problem to be solved by the invention ]
In patent document 1, a buffer is provided between the stator and the mover in order to suppress vibration of the mover. In patent document 2, a damper is provided in a spring member supporting a mover.
The invention aims to provide a lens driving device, a camera device and an electronic device capable of inhibiting vibration of a mover and a spring plate.
[ technical solution ]
A first feature of the present invention is a lens driving apparatus including: a stator; a lens support body for supporting a lens, and a mover moving in an optical axis direction of the lens with respect to the stator; a spring piece that has a stator-side fixed portion fixed to the stator, a mover-side fixed portion fixed to the mover, and a wrist portion that couples the stator-side fixed portion and the mover-side fixed portion, and that supports the mover in a freely movable state with respect to the stator; and a viscoelastic resin bridging between the wrist and the mover.
Preferably, the resin bridges between the sub-plane having the optical axis direction as a normal direction and the wrist plane facing the sub-plane.
Preferably, the spring plate has a front spring plate and a rear spring plate, the front spring plate supporting the mover at a front side of the mover; the rear spring plate supports the mover at the rear side of the mover. The resin bridges between the mover plane facing the front side and the front side spring plane facing the mover plane and facing the rear side, and between the mover plane facing the rear side and the rear side spring plane facing the mover plane and facing the front side, respectively.
Preferably, the resin bridges between the sub-plane having a direction perpendicular to the optical axis as a normal direction and the wrist plane facing the sub-plane.
Preferably, a groove for accommodating the resin is provided on the mover plane. Or a groove is provided on the mover plane, the resin may be provided on the stator-side fixing portion side adjacent to the groove.
Preferably, the arm portion has a curved portion connected to the stator-side fixed portion and a straight portion extending from the curved portion to the mover-side fixed portion, and the resin bridges between the arm portion and the mover at the straight portion of the arm portion.
Preferably, the resin is disposed at a position closer to the mover-side fixing portion than the stator-side fixing portion.
Preferably, a lens fixing hole for fixing a lens is provided in the center of the mover, and a projection portion projecting toward the optical axis direction is provided between the mover plane and the lens fixing hole.
Preferably, a distance in the optical axis direction between the stator-side fixing portion of the front-side spring piece and the stator-side fixing portion of the rear-side spring piece is larger than a distance in the optical axis direction between the mover-side fixing portion of the front-side spring piece and the mover-side fixing portion of the rear-side spring piece.
A second feature of the present invention is a lens driving device including a lens support for supporting a lens, a frame for accommodating the lens support, and a front spring and a rear spring for supporting the lens support with respect to the frame, the front spring being connected to a front side of the frame facing a front side of an optical axis direction of the lens and a front side of the lens support; the rear spring is connected with the rear side surface of the frame body and the rear side surface of the lens support body, which are opposite to the rear side of the lens in the optical axis direction.
Preferably, the frame has a square shape as viewed in the optical axis direction, and the front side surface and the rear side surface of the frame are respectively formed to protrude inward from respective corners of the square shape.
A third feature of the present invention is a lens driving device including a lens support for supporting a lens, a frame for accommodating the lens support, and a spring for supporting the lens support with respect to the frame, wherein either an outer peripheral surface of the lens support or an inner peripheral surface of the frame has a protruding portion protruding from a part of a circumferential direction thereof to the other, and the other has a recess for accommodating the protruding portion.
A fourth feature of the present invention is that the lens driving device includes: a lens support body provided with a lens fixing hole at the center for fixing a lens; a frame body accommodating the lens support body; a magnet fixed to the lens support; and a coil fixed to the housing with respect to the magnet, wherein the lens support body has a square shape as viewed in the optical axis direction of the lens, a magnet fixing portion for fixing the magnet is provided on a side portion corresponding to a side portion of the square shape, and the magnet fixing portion has a magnet mounting portion for mounting the magnet by forming a planar shape so as to dig out the side portion.
Preferably, the magnet mounting part has a recess in which at least one end portion in the circumferential direction of the magnet mounting part is also cut.
A fifth feature of the present invention is a photographic apparatus comprising any one of the lens driving devices described above, a lens supported by the lens support, and a light receiving sensor for detecting light transmitted through the lens.
A sixth feature of the present invention is an electronic device including any one of the lens driving apparatuses described above, a lens supported by the lens support, and a light receiving sensor for detecting light transmitted through the lens.
[ beneficial effects ]
According to the present invention, since bridging is performed between the mover and the elastic sheet by the resin having viscoelasticity, vibration of the mover and the elastic sheet can be suppressed.
[ description of the drawings ]
Fig. 1 is an exploded perspective view of a lens driving device according to embodiment 1 of the present invention.
Fig. 2 is a perspective view of a lens driving device according to embodiment 1 of the present invention from the front side.
Fig. 3 is a perspective view of a lens driving device according to embodiment 1 of the present invention from the rear side.
Fig. 4 is a perspective view of a front spring and a rear spring used in embodiment 1 of the present invention.
Fig. 5 is a plan view of a lens driving device according to embodiment 1 of the present invention, excluding a frame.
Fig. 6 is a bottom view of a frame not included in the lens driving device according to embodiment 1 of the present invention.
Fig. 7 is a longitudinal sectional view of a lens driving device according to embodiment 1 of the present invention, excluding a frame.
Fig. 8 is a cross-sectional oblique view of a line A-A in fig. 7 in the lens driving device according to embodiment 1 of the present invention.
Fig. 9 is a plan view showing a relationship between a lens support body protrusion and a frame recess in embodiment 1 of the present invention.
Fig. 10 is a cross-sectional view showing a relationship between a position detecting unit and a position detecting magnet in a lens driving device according to embodiment 1 of the present invention.
Fig. 11 is a cross-sectional view showing a relationship between a lens support and a driving magnet in a lens driving device according to embodiment 1 of the present invention.
Fig. 12A and fig. 12B are cross-sectional views showing the relationship between the wrist portion of the front elastic piece or the rear elastic piece and the lens support body in the lens driving device according to embodiment 1 of the present invention.
Fig. 13 is a plan view showing a relationship between a viscoelastic resin and a protrusion in the lens driving device according to embodiment 2 of the present invention.
Fig. 14 is a plan view showing a relationship between a wrist portion of a front spring and a lens support body in a lens driving device according to embodiment 3 of the present invention.
[ detailed description ] of the invention
The following describes embodiments of the present invention with reference to the drawings.
In fig. 1, an auto-focus type small camera used in electronic devices such as a cellular phone and a smart phone employs a lens driving apparatus 10. In the present specification, one direction of the optical axis direction of the lens driving device 10 is referred to as a front side, and the other direction is referred to as a rear side, as necessary.
The lens driving device 10 has a stator 12 and a mover 14. The stator 12 has a frame 16 and a frame 22. The frame 16 includes a shield case 18 provided on the front side and a bottom plate 20 provided on the rear side, and the bottom plate 20 is fixed to the shield case 18 to constitute the frame 16. The inside of the housing 16 is a square rectangular parallelepiped when viewed in the optical axis direction, and the inside of the housing 16 is hollow. The quadrangular frame 22 is disposed in the housing 16, and the frame 22 is fixed to the housing 16. The coils 24 are fixed to the side portions of the frame 22 corresponding to the opposite sides, respectively. The coil 24 is composed of a semicircular portion and a linear portion in order to extend in a direction perpendicularly intersecting the optical axis direction. In addition, in the frame 22, the wiring board 26 is fixed on a plane between the two coils 24. The position detecting section 28 is provided on the wiring board 26.
The mover 14 is disposed in the housing 16. The mover 14 has a lens support 30 that supports a lens. The outer side of the lens support 30 has a nearly quadrangular shape as viewed in the optical axis direction. A lens fixing hole 32 is formed inside the lens support 30 for fixing the lens.
The driving magnets 34 are fixed to the outer walls of the lens support 30 on the side portions corresponding to the two opposite sides. The driving magnet 34 is elongated in a direction perpendicular to the optical axis direction, and is rectangular, and the driving magnet 34 is divided into front and rear sides so as to have an S pole and an N pole in front and rear sides. The position detecting magnet 36 is fixed to the lens support 30 between the two driving magnets 34.
In order to use the front spring piece 38 and the rear spring piece 40 formed in a four-square shape, the mover 14 is opposed to the stator 12 and is freely movable in the optical axis direction and is elastically supported.
In fig. 2 and 3, the shielding case 18 and the bottom plate 20 of the housing 16 are provided with light passing holes 42 and 44, respectively, corresponding to the lens fixing holes 32 of the lens support 30. The wiring board 26 has a portion protruding rearward from the housing 16, and the power supply of the position detecting unit 28 is connected to the control line in the protruding portion. The current flows from the position detecting section 28 to the coil 24. A control signal of a controller, not shown, is sent out on the wiring board 26.
In fig. 4, the front spring piece 38 and the rear spring piece 40 each have a square frame 46. Stator-side fixing portions 48 are formed at four corners of the frame portion 46. The stator-side fixing portion 48 takes a triangular shape so as to protrude inward. In addition, an insertion hole 50 is formed in the stator-side fixing portion 48.
The arm 52 is located inside the frame 46, and one end of the arm 52 is connected to the stator-side fixing portion 48. The arm 52 includes a curved portion 54 extending in a diagonally curved manner, and a linear portion 56 extending in a linear shape from the curved portion 54 to the adjacent stator-side fixed portion 48. The front end of the straight portion 56 extends to the vicinity of the adjacent stator fixing portion 48. The front end of the straight portion 56 forms a mover-side fixing portion 58. The arm 52 connects the stator-side fixing portion 48 and the mover-side fixing portion 58.
If the front spring piece 38 and the rear spring piece 40 are compared, the extending directions of the arm portions 52 starting from the stator-side fixing portion 48 are different. In fig. 4, the arm 52 of the front spring 38 extends counterclockwise, and the arm 52 of the rear spring 40 extends clockwise. For example, the front spring piece 38 and the rear spring piece 40 may be formed in the same shape and may be assembled to the device with the front and rear sides reversed. The reason why the extending directions of the arm portions 52 are different will be described later.
As shown in fig. 4, in the free shape, the lens driving device 10 is assembled so as to be flat in one plane, and the front elastic piece 38 and the rear elastic piece 40 are fixed so that the mover-side fixing portion 58 is disposed further inward in the optical axis direction than the stator-side fixing portion 48, and the arm portion 52 is elastically deformed.
In fig. 5 to 8, the frame 22 has stator-side fixed surfaces 60 at four corners corresponding to the stator fixing portions 48. The stator-side fixed surface 60 is a triangular plane, and has a protrusion (not shown) protruding in the optical axis direction. The stator-side fixing portions 48 of the front spring piece 38 and the rear spring piece 40 are placed on the stator-side fixed surface 60, and the protrusions on the fixed surface 60 are inserted into the insertion holes 50 and then fixed to the stator-side fixed surface 60 by the adhesive 61.
The mover-side fixing portion 58 is fixed to the mover-side fixed surface 62, and the mover-side fixed surface 62 is also an optical axis-direction end surface of the lens support 30. In this embodiment, the mover-side fixing portion 58 is fixed to the fixing projection 64 in a mosaic manner, and the fixing projection 64 projects in the optical axis direction.
In this case, as shown in fig. 7, in order to include a distance L2 from the front and rear mover-side fixed surface 62 in the distance L1 between the front and rear stator-side fixed surfaces 60, the distance L1 is larger than the distance L2. Thus, the front spring piece 38 is extended to the rear side and the rear spring piece 40 is extended to the front side by the mover 14.
For example, if the lens support 30 moves on the front side, the wrist portion 52 of the front spring piece 38 extends in the near circumferential direction perpendicularly intersecting the optical axis direction by a distance, and the lens support 30 is rotated counterclockwise in fig. 5. The arm 52 of the rear spring 40 is contracted in a near circumferential direction perpendicular to the optical axis direction, and the lens support 30 is rotated clockwise in fig. 6. In short, for example, the front side portion and the rear side portion of the lens support body 30 are rotated counterclockwise at the same time when viewed from the front side in the optical axis direction. In this way, by making the extending directions of the arm portions 52 of the front spring piece 38 and the rear spring piece 40 different, the rotation direction of the lens support body 30 is made uniform, and the posture in the direction intersecting the optical axis direction of the lens support body 30 perpendicularly can be stabilized.
As shown in fig. 9, a protrusion 66 protruding toward the inner peripheral surface of the frame 22 so as to intersect perpendicularly with the optical axis direction is provided near one of four corners of the peripheral surface portion of the lens support 30 in the circumferential direction. Further, a recess 68 is formed on the inner peripheral surface of the frame 22 so as to face the protrusion 66. To fit into the recess 68 of the frame 22, the protrusion 66 of the lens support 30 is received. If the shapes of the frame 22 and the lens support body 30 in the circumferential direction are the same, there is a possibility that the assembly position in the circumferential direction is misplaced, and thus, if the protrusions 66 and the recesses 68 are formed at one of the four corners, the misplacement of the assembly position in the circumferential direction can be prevented. In addition, by being inlaid in the circumferential direction, the lens support 30 can be prevented from rotating relative to the frame 22.
In this embodiment, the protrusion 66 is formed on the lens support 30, the recess 68 is formed on the frame 22, and in other embodiments, the recess 68 may be formed on the lens support 30, and the protrusion 66 may be formed on the frame 22.
In fig. 10, as an example, the position detecting portion 28 provided on the wiring board 26 has a hall element, and is inserted into a position detecting portion insertion hole 70 formed in the frame 22. The position detecting magnet 36 is fixed to a position detecting magnet insertion groove 72, and the position detecting magnet insertion groove 72 is formed in the lens support 30. If the position detecting unit 28 is opposed to the position detecting magnet 36, the position detecting magnet 36 moves in the optical axis direction together with the lens support 30, and the position of the lens support 30 in the optical axis direction is detected by the position detecting unit 28.
In fig. 11, the driving magnet 34 is inserted into a driving magnet insertion groove 74 formed in the lens support 30, and is fixed. A planar magnet mounting portion 76 is formed in the center of the driving magnet insertion groove 74. The driving magnet 34 is fixed in contact with the rear surface of the driving magnet insertion groove 74 while being in contact with the magnet mounting portion 76. In the driving magnet insertion groove 74, the driving magnet 34 is not in contact with both sides of the magnet mounting portion 76, that is, a hollow recess 78 is formed. As the recess 78 is separated from the magnet mounting portion 76, a deeper groove is gradually formed. Therefore, the thickness of the lens support 30 can be equalized while the weight of the lens support 30 is reduced.
In this structure, the lens is supported by the lens support 30. The lens driving device 10 in which the lens is supported by the lens support 30 is mounted in a photographic apparatus. In a photographic apparatus, light emitted from a subject and input through the lens is detected by a light receiving sensor. And calculates a lens movement amount for focusing the object by a controller configured by the camera. The controller transmits a control signal corresponding to the lens movement amount to the wiring board 26. When the coil 24 is energized, a magnetic flux is generated between the driving magnet 34 and the coil 24 if the coil 24 is energized. If a magnetic flux is generated between the driving magnet 34 and the coil 24, an electromagnetic force is generated in the lens support 30, and the lens support 30 moves against the front spring piece 38 or the rear spring piece 40. In the wiring board 26, the position of the position detecting magnet 36 is detected by the position detecting unit 28, and feedback control is performed to stop the lens support 30 at the target position.
Thus, if the lens support 30 is stopped, vibration will be generated in the lens support 30. Therefore, it is necessary to suppress vibration of the lens support 30.
Returning to fig. 5 to 8, the lens support 30 and the front spring piece 38 are bridged by the viscoelastic resin 80 between the lens support 30 and the rear spring piece 40. Accordingly, vibrations of the mover 14 including the lens support body 30, the front spring piece 38, and the rear spring piece 40 can be suppressed. The viscoelastic resin 80 is a silicone resin or the like, and is provided by a coating method. In this embodiment, the arm portions 52 of the front spring piece 38 and the rear spring piece 40 face the mover-side fixed surface 62 of the lens support body 30 and overlap as viewed from the optical axis direction, and therefore the viscoelastic resin 80 is interposed between the mover-side fixed surface 62 and the plane of the straight portion 56 of the arm portion 52, the mover-side fixed surface 62 being in the normal direction with respect to the optical axis direction, and the plane of the straight portion 56 of the arm portion 52 facing the mover-side fixed surface 62. The viscoelastic resin 80 is disposed at 8, at the front side 4, and at the back side 4.
As shown in fig. 5 and 6, the viscoelastic resin 80 is provided at a position closer to the mover-side fixing portion 58 than the stator-side fixing portion 48. The position near the mover-side fixing portion 58 is more stable than the position near the stator-side fixing portion 48, and vibration can be suppressed.
In addition, as shown in fig. 12A, a groove 82 is formed in the mover-side fixed surface 62 of the lens support 30, and a part of the viscoelastic resin 80 is accommodated in the groove 82. Since a part of the viscoelastic resin 80 is accommodated in the groove 82, the positions of the viscoelastic resin 80 are not shifted even if the lens driving device 10 is subjected to an impact.
As shown in fig. 12B, a groove 82 is formed in the mover-side fixed surface 62 of the lens support 30, and a viscoelastic resin 80 is provided on the stator-side fixing portion 48 side adjacent to the groove 82. Since the viscoelastic resin 80 is hard to move to the side where the gap between the arm 52 and the mover-side fixed surface 62 is large, even if the lens driving device 10 is subjected to an impact, the positions of the viscoelastic resin 80 are hard to be shifted. Both fig. 12A and 12B can change the groove shape. In addition, other shapes such as V-grooves are also possible.
In embodiment 2, as shown in fig. 13, a protrusion 84 may be formed between the lens fixing hole 32 and the viscoelastic resin 80 at a position facing the lens fixing hole 32 of the lens support 30, and protruding in the optical axis direction. The protrusion 84 prevents the viscoelastic resin 80 from moving toward the lens fixing hole 32.
In embodiment 3, as shown in fig. 14, the viscoelastic resin 80 may bridge between the lens support 30 and the front elastic piece 38 or the rear elastic piece 40 in a direction perpendicular to the optical axis direction. That is, for example, in the initial state, if the stator-side fixing portion 48 of the front-side elastic piece 38 is located further to the rear than the mover-side fixing portion 58, a viscoelastic resin 80 may be provided between the wrist portion 52 and the side surface of the lens support body 30. In this case, as in the previous embodiment, it is preferable to form a groove 82 on the side surface of the lens support 30 and to accommodate a part of the viscoelastic resin 80 in the groove 82. If the same state is formed by the rear elastic piece 40, a viscoelastic resin 80 may be provided between the rear elastic piece 40 and the lens support 30.
In addition, although the lens driving device applied to the photographic device is described in the present specification, the present invention is also applicable to other devices. While the foregoing embodiment employs both the front and rear spring pieces, in another embodiment, only one spring piece may be provided. While the foregoing embodiment employs resin to bridge the wrist at both the front and rear domes, in another embodiment, resin to bridge the wrist at one dome is also possible.
[ number Specification ]
10. Lens driving device
12. Stator
14. Active cell
16. Frame body
18. Shielding box
20. Bottom plate
22. Frame
24. Coil
26. Circuit board
28. Position detecting unit
30. Lens support
32. Hole for fixing lens
34. Magnet for driving
36. Magnet for position detection
38. Front spring plate
40. Rear spring plate
46. Frame part
48. Stator side fixing part
52. Wrist portion
54. Bending part
56. Straight line part
58. Mover side fixing part
60. Stator side fixed surface
62. Mover side fixed surface
66. Protruding part
68. Concave part
76. Magnet mounting part
78. Concave part
80. Resin composition
82. Groove
Claims (15)
1. A lens driving apparatus, comprising:
a stator;
a mover including a lens support body for supporting a lens, the mover being movable in an optical axis direction of the lens with respect to the stator;
a spring plate having a stator-side fixed portion fixed to the stator, a mover-side fixed portion fixed to the mover, and a wrist portion connecting the stator-side fixed portion and the mover-side fixed portion, the spring plate supporting the mover in a freely movable state with respect to the stator; and
a resin having viscoelastic properties, which bridges between the wrist and the mover;
the resin bridges between a sub-plane having the optical axis direction as a normal direction and a plane of the wrist opposite to the sub-plane, and the bridged sub-plane and the plane of the wrist overlap each other when viewed from the optical axis direction.
2. The lens driving apparatus according to claim 1, wherein:
the spring plate comprises a front spring plate for supporting the rotor at the front side of the rotor and a rear spring plate for supporting the rotor at the rear side of the rotor,
the resin bridges between a front-side facing mover plane and a plane of the front-side spring facing the front-side facing mover plane, and between a rear-side facing mover plane and a plane of the rear-side spring facing the rear-side facing mover plane and the front-side facing mover plane, respectively.
3. The lens driving apparatus according to claim 1, wherein: a groove for accommodating the resin is provided on the mover plane.
4. The lens driving apparatus according to claim 1, wherein: a groove is provided on the mover plane, and the resin is provided on the stator-side fixing portion side adjacent to the groove.
5. The lens driving apparatus according to claim 1, wherein: the arm portion has a curved portion connected to the stator-side fixed portion and a linear portion extending from the curved portion to the mover-side fixed portion, and the resin bridges between the arm portion and the mover in the linear portion of the arm portion.
6. The lens driving apparatus according to claim 1, wherein: the resin is disposed at a position closer to the mover-side fixing portion than the stator-side fixing portion.
7. The lens driving apparatus according to claim 1, wherein: a lens fixing hole for fixing a lens is provided in the center of the mover, and a projection portion projecting in the optical axis direction is provided between the mover plane and the lens fixing hole.
8. The lens driving apparatus according to claim 2, wherein: the distance in the optical axis direction between the stator side fixing portion of the front elastic piece and the stator side fixing portion of the rear elastic piece is greater than the distance in the optical axis direction between the mover side fixing portion of the front elastic piece and the mover side fixing portion of the rear elastic piece.
9. The lens driving apparatus according to claim 1, wherein: the device further comprises:
a frame body for accommodating the lens support body; and
a front elastic piece and a rear elastic piece which support the lens support body relative to the frame body,
the front spring piece is connected to a front side surface of the frame body and a front side surface of the lens support body opposite to the front side in the optical axis direction,
the rear spring piece is connected to a rear side surface of the frame body and a rear side surface of the lens support body opposite to a rear side in the optical axis direction.
10. The lens driving apparatus according to claim 9, wherein: the frame body is in a quadrilateral shape when viewed from the optical axis direction, and a front side surface and a rear side surface of the frame body are respectively formed by protruding inwards from each corner of the quadrilateral.
11. The lens driving apparatus according to claim 1, further comprising:
a lens support for supporting a lens;
a frame body accommodating the lens support body; and
a spring plate for supporting the lens supporting body relative to the frame body,
either one of the outer peripheral surface of the lens support body and the inner peripheral surface of the frame body has a projection part of which projects in a part of the circumferential direction toward the other,
the other has a recess for accommodating the protruding portion.
12. The lens driving apparatus according to claim 1, further comprising:
a frame body accommodating the lens support body;
a magnet fixed to the lens support; and
a coil fixed to the housing opposite to the magnet,
the lens support body is provided with a lens fixing hole in the center for fixing a lens;
the lens support body has a quadrangular shape as viewed in the optical axis direction of the lens, a magnet fixing portion for fixing the magnet is provided on a side portion corresponding to a side portion of the quadrangular shape,
the magnet fixing portion has a magnet mounting portion for mounting the magnet by forming a planar shape so as to dig out the side portion.
13. The lens driving apparatus according to claim 12, wherein: the magnet mounting part has a recess in which at least one end in the circumferential direction of the magnet mounting part is also cut out.
14. A photographic apparatus, characterized by comprising:
the lens driving device according to any one of claims 1 to 13;
a lens supported by the lens support; and
a light receiving sensor for detecting the light transmitted through the lens.
15. An electronic device, comprising:
the lens driving device according to any one of claims 1 to 13;
a lens supported by the lens support; and
a light receiving sensor for detecting the light transmitted through the lens.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016189700A JP6568034B2 (en) | 2016-09-28 | 2016-09-28 | LENS DRIVE DEVICE, CAMERA DEVICE, AND ELECTRONIC DEVICE |
| JP2016-189700 | 2016-09-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108008517A CN108008517A (en) | 2018-05-08 |
| CN108008517B true CN108008517B (en) | 2024-04-05 |
Family
ID=61836633
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721232005.2U Active CN207440363U (en) | 2016-09-28 | 2017-09-25 | Lens driver, photographic means and electronic equipment |
| CN201710873389.4A Active CN108008517B (en) | 2016-09-28 | 2017-09-25 | Lens driving device, camera device and electronic equipment |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721232005.2U Active CN207440363U (en) | 2016-09-28 | 2017-09-25 | Lens driver, photographic means and electronic equipment |
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| Country | Link |
|---|---|
| JP (1) | JP6568034B2 (en) |
| CN (2) | CN207440363U (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6568034B2 (en) * | 2016-09-28 | 2019-08-28 | 新思考電機有限公司 | LENS DRIVE DEVICE, CAMERA DEVICE, AND ELECTRONIC DEVICE |
| CN108663769B (en) * | 2018-06-26 | 2023-10-03 | 惠州萨至德光电科技有限公司 | Lens driving device |
| CN113109914A (en) * | 2020-01-09 | 2021-07-13 | 新思考电机有限公司 | Lens driving device, camera device, and electronic apparatus |
| JP7377728B2 (en) * | 2020-01-29 | 2023-11-10 | アルプスアルパイン株式会社 | Lens drive device and camera module |
| WO2022141487A1 (en) * | 2020-12-31 | 2022-07-07 | 欧菲光集团股份有限公司 | Optical image stabilization driver, image capturing module and electronic apparatus |
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| CN102037387A (en) * | 2008-05-20 | 2011-04-27 | 三美电机株式会社 | Lens driving device |
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| CN207440363U (en) * | 2016-09-28 | 2018-06-01 | 新思考电机有限公司 | Lens driver, photographic means and electronic equipment |
| JP2018139015A (en) * | 2018-06-01 | 2018-09-06 | 新思考電機有限公司 | Lens drive device, camera device, and electronic apparatus |
| JP2018159937A (en) * | 2018-06-01 | 2018-10-11 | 新思考電機有限公司 | Lens drive device, camera device, and electronic apparatus |
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| JP3782088B2 (en) * | 2004-03-15 | 2006-06-07 | シャープ株式会社 | Leaf spring and lens actuator provided with the same |
| JP2009186650A (en) * | 2008-02-05 | 2009-08-20 | Konica Minolta Opto Inc | Camera module and mobile terminal |
| JP5168094B2 (en) * | 2008-11-12 | 2013-03-21 | コニカミノルタアドバンストレイヤー株式会社 | Drive device |
| TWI410733B (en) * | 2009-10-06 | 2013-10-01 | Lens displacement device, flexible piece and the manufacturing process thereof | |
| KR102209118B1 (en) * | 2013-12-04 | 2021-01-28 | 엘지이노텍 주식회사 | Motor for actuating lens |
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2016
- 2016-09-28 JP JP2016189700A patent/JP6568034B2/en active Active
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- 2017-09-25 CN CN201721232005.2U patent/CN207440363U/en active Active
- 2017-09-25 CN CN201710873389.4A patent/CN108008517B/en active Active
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| JPS60182024A (en) * | 1984-02-29 | 1985-09-17 | Hitachi Ltd | Objective lens driver |
| CN102037387A (en) * | 2008-05-20 | 2011-04-27 | 三美电机株式会社 | Lens driving device |
| CN102262280A (en) * | 2010-05-24 | 2011-11-30 | 思考电机（上海）有限公司 | Lens driving device, auto focus camera and mobile terminal device |
| CN103036346A (en) * | 2011-09-29 | 2013-04-10 | Lg伊诺特有限公司 | Voice coil motor |
| CN203786374U (en) * | 2013-02-13 | 2014-08-20 | 阿尔卑斯电气株式会社 | Lens driving device |
| CN104181667A (en) * | 2013-08-20 | 2014-12-03 | 惠州市大亚湾永昶电子工业有限公司 | Lens driving device |
| WO2015194337A1 (en) * | 2014-06-16 | 2015-12-23 | ミツミ電機株式会社 | Lens holder driving device and mobile terminal with camera |
| JP2016014703A (en) * | 2014-06-30 | 2016-01-28 | 日本電産コパル株式会社 | Lens driving device |
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| CN207440363U (en) * | 2016-09-28 | 2018-06-01 | 新思考电机有限公司 | Lens driver, photographic means and electronic equipment |
| JP2018139015A (en) * | 2018-06-01 | 2018-09-06 | 新思考電機有限公司 | Lens drive device, camera device, and electronic apparatus |
| JP2018159937A (en) * | 2018-06-01 | 2018-10-11 | 新思考電機有限公司 | Lens drive device, camera device, and electronic apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2018054812A (en) | 2018-04-05 |
| CN207440363U (en) | 2018-06-01 |
| JP6568034B2 (en) | 2019-08-28 |
| CN108008517A (en) | 2018-05-08 |
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