Imaging element driving mechanism, camera device, and electronic device

Abstract

A thin camera element driving mechanism with a sensor displacement structure is provided, which can be mounted on thin electronic devices such as smartphones; a photographic device and an electronic device equipped with such a camera element driving mechanism are also provided. The driving mechanism includes a coil portion that drives a camera element assembly in a second or third axis direction relative to a fixed portion, and a magnet portion opposite to the coil portion. The coil portion is disposed on one of the camera element assembly or the fixed portion, and the magnet portion is disposed on the other of the camera element assembly or the fixed portion. A support mechanism supports the camera element assembly, enabling it to move relative to the fixed portion.

Description

[Technical Field]

[0002] This invention relates to a camera element driving mechanism used in electronic devices such as smartphones, a photographic apparatus equipped with the camera element driving mechanism, and an electronic device. [Background Technology]

[0004] Instead of moving the lens to compensate for camera shake, there is also a method of sensor displacement, which allows the imaging element to move in a direction orthogonal to the incident light direction.

[0005] For example, the mechanism shown in Patent Document 1 has a substrate in which a first stage moving in the X-axis direction and a second stage moving in the Y-axis direction coincide in the Z-axis direction. The substrate is fixed to the camera frame, and the camera element is fixed to the second stage. The first stage and the second stage are driven by a transmission device using piezoelectric elements and drive shafts.

[0006] [Existing Technical Documents]

[0007] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 2004-274242 [Summary of the Invention]

[0010] [The technical problem this invention aims to solve]

[0011] The structure shown in Patent Document 1 is typically used in digital cameras. Its thickness in the Z direction is relatively large, making it difficult to apply to the photographic devices mounted on thin electronic devices such as smartphones.

[0012] The present invention aims to solve the aforementioned problems and provides a thin camera element driving mechanism with a sensor shifting structure that can be mounted on thin electronic devices such as smartphones, a photographic device mounted on such a camera element driving mechanism, and an electronic device.

[0013] [Technical Solution]

[0014] A camera element driving mechanism, having

[0015] A fixing part, a camera element assembly that moves relative to the fixing part, a drive mechanism, and a support mechanism.

[0016] The camera element assembly has a rectangular camera element. The normal direction of the light-receiving surface of the camera element is taken as the first axis direction, and directions orthogonal to the first axis direction and mutually orthogonal to each other are taken as the second axis direction and the third axis direction.

[0017] The drive mechanism includes a coil section that drives the camera element assembly in the second axis direction or the third axis direction relative to the fixed part, and a magnet section opposite to the coil section.

[0018] The coil portion is disposed on either the imaging element assembly or the fixing portion.

[0019] The magnet portion is disposed on either the camera element assembly or the fixing portion.

[0020] The support mechanism supports the camera element assembly, enabling it to move relative to the fixed part.

[0021] In one or more embodiments of the camera element driving mechanism, the coil portion has a first coil that drives the camera element assembly toward the third axis direction relative to the fixing portion, and a second coil that drives it toward the second axis direction.

[0022] In one or more embodiments of the camera element driving mechanism, the first coil and the second coil are arranged relative to each other at 90-degree intervals with respect to the camera element.

[0023] In one or more embodiments of the camera element driving mechanism, there are two first coils arranged along the third axis, and two second coils arranged along the second axis.

[0024] In one or more embodiments of the camera element driving mechanism, the two first coils are offset from each other in the second axial direction, and the two second coils are offset from each other in the third axial direction.

[0025] In one or more embodiments of the camera element driving mechanism, the first coil is composed of a plurality of first small coils.

[0026] The second coil consists of multiple smaller second coils.

[0027] The plurality of first small coils of the first coil are arranged along the second axial direction.

[0028] The plurality of second small coils of the second coil are arranged along the third axis direction.

[0029] In one or more embodiments of the camera element driving mechanism, the first coil and the second coil are wound around the first axis direction.

[0030] The first coil is opposite to the magnetized surface of the magnet portion in the first axial direction, and the magnetized surface opposite to the first coil is magnetized at different magnetic poles in the third axial direction.

[0031] The second coil is opposite to the magnetized surface of the magnet portion in the first axial direction, and the magnetized surface opposite to the second coil is magnetized at different magnetic poles in the second axial direction.

[0032] In one or more embodiments of the aforementioned camera element driving mechanism, the first coil is formed into a coil with the third axis direction as the winding axis.

[0033] The first coil is opposite to the magnetized surface of the magnet portion in the third axial direction, and the magnetized surface opposite to the first coil is magnetized at a single magnetic pole.

[0034] The second coil is formed with the second axis as the winding axis.

[0035] The second coil is opposite to the magnetized surface of the magnet portion in the second axial direction, and the magnetized surface opposite to the second coil is magnetized on a single magnetic pole.

[0036] In one or more embodiments of the camera element driving mechanism, one side of the coil portion or the magnet portion is disposed on a face facing the front side of the first axial direction of the camera element assembly or a face facing the rear side.

[0037] In one or more embodiments of the camera element driving mechanism, one side of the coil portion or the magnet portion is disposed on the side of the camera element assembly.

[0038] In one or more embodiments of the camera element driving mechanism, the support mechanism has a plurality of suspension wire components.

[0039] The plurality of suspension wire components connect the fixing part and the camera element assembly, and extend in the direction of the first axis.

[0040] In one or more embodiments of the camera element driving mechanism, the support mechanism has a ring-shaped thin plate spring, the spring having a wide portion fixed to the fixing portion, and a mounting portion for mounting the suspension wire component, the mounting portion being disposed in a suspended state.

[0041] In one or more embodiments of the camera element driving mechanism, the support mechanism has a plurality of spherical components disposed between the fixing part and the camera element assembly, and a magnetic attraction device for attracting the camera element assembly to the fixing part.

[0042] [Beneficial Effects]

[0043] According to the invention, a thin camera element driving mechanism with a sensor shifting structure that can be mounted on thin electronic devices such as smartphones, a photographic device equipped with such a camera element driving mechanism, and an electronic device can be provided. [Attached Image Description]

[0045]

【 Figure 1 [Image caption: A perspective view showing an example of a first embodiment of the present invention.]

[0046]

Figure 2

[0047]

Figure 3A

[0048]

【 Figure 4A This is a plan view showing an example configuration of the coil of a camera element drive mechanism having a first embodiment. Figure 4B This is a plan view showing another configuration example of the coil.

[0049]

Figure 5A

【 Figure 5B [A figure is provided to illustrate an example of a second embodiment of the present invention.] Figure 5A [This is a cross-sectional view of a section of the structure that has been omitted.] Figure 5B This is a plan view showing an example configuration of the coil.

[0050]

Figure 6A

【 Figure 6B [A figure showing another example of the second embodiment of the present invention] Figure 6A [This is a plan view showing another configuration example of the display coil.] Figure 6B [To display] Figure 6A A plan view of a modified example of the coil configuration.

[0051]

Figure 7A

【 Figure 7B [A diagram illustrating an example of a third embodiment of the present invention] Figure 7A [This refers to a cross-sectional view of a portion of the structure that has been omitted.] Figure 7B This is a plan view showing an example configuration of the coil.

[0052]

Figure 8A

【 Figure 8B[A diagram illustrating an example of a fourth embodiment of the present invention] Figure 8A [This refers to a cross-sectional view of a portion of the structure that has been omitted.] Figure 8B This is a plan view showing an example configuration of the coil.

[0053] [Numbering Explanation]

[0054] 1A, 1B, 1C, 1D Camera element drive mechanism

[0055] 2. Enclosure

[0056] 3 Main body part

[0057] 4 terminals

[0058] 4A Hole for fixing

[0059] 4B Coil Connection Part

[0060] 5 springs

[0061] 5A Holes for fixing

[0062] 6 magnet fixing plate

[0063] 7 Magnet Department

[0064] 7A First Magnet

[0065] 7B Second Magnet

[0066] 8. Coil section

[0067] 8A Hole for Fixing

[0068] 9. Suspension wire components

[0069] 10 Circuit board

[0070] 10A Flat Panel

[0071] 10B Side Panel

[0072] 10C metal plate

[0073] 11 Camera Component Assembly

[0074] 12 substrate

[0075] 13 Camera components

[0076] 14. Base Plate

[0077] 15 steps

[0078] 16 Thin section

[0079] 17 First coil

[0080] 18 Second coil

[0081] 19 First small coil

[0082] 20 Second small coil

[0083] 21 Spherical components

[0084] 22 Magnetic Plate

[0085] 23 Drive mechanism

[0086] 24 Supporting Institutions

[0087] 25 First axis direction

[0088] 26 Second axis direction

[0089] 27 Third axis direction

[0090] 28 Magnetic attraction device

Detailed Implementation Methods

[0092] An example of an embodiment of the present invention will now be described with reference to the accompanying drawings.

[0093] [First Implementation Form]

[0094] Reference Figures 1-4B The first embodiment is described below. The camera element drive mechanism 1A of the first embodiment includes a fixing part, a camera element assembly, a drive mechanism, and a support mechanism. Furthermore, the components of the camera element drive mechanism 1A are respectively composed of a body part 3, a terminal 4, a spring 5, a magnet fixing plate 6, a magnet part 7, a coil part 8, a suspension wire part 9, a circuit board 10, a camera element assembly 11, and a base plate 14.

[0095] The structure of the camera element assembly 11 is as follows: the camera element 13 with a light-receiving surface is mounted on the substrate 12, and the camera element 13 includes an image sensor.

[0096] In the first to fourth embodiments, such as Figure 2 As shown in Figure 4, the normal direction of the light-receiving surface of the imaging element 13 is taken as the first axial direction 25, and directions orthogonal to and mutually orthogonal to the first axial direction 25 are taken as the second axial direction 26 and the third axial direction 27. Furthermore, the side where light is incident in the first axial direction 25 ( Figure 2 The lower left side) is used as the front side, and the imaging side ( Figure 2 The upper right side) serves as the rear side.

[0097] The light-receiving surface of the camera element 13 is a plane extending in the second axis direction 26 and the third axis direction 27.

[0098] The mounting portion includes a housing 2 fixedly installed inside the photographic apparatus. The housing 2 has a housing body 3 that is quadrangular when viewed from the first axial direction 25, and a plate-shaped base plate 14 that is also quadrangular when viewed from the first axial direction 25. In this first embodiment, both the housing body 3 and the base plate 14 are magnetic materials, but they could also be non-magnetic. The imaging element assembly 11 is housed within the space formed by the rear end of the outer peripheral wall of the housing body 3 mounted to the outer edge of the base plate 14. A through-hole is designed on the front side wall of the housing body 3, through which light directed towards the imaging element 13 passes. Steps 15 are designed on the upper ends of each of the four side walls of the housing body 3.

[0099] As shown in Figure 3, a metal spring 5 and a terminal 4 composed of an FPC (flexible printed circuit) are mounted on the surface behind the step 15 in the first axial direction 25. Power is supplied to the coil section 8 described below through the terminal 4.

[0100] The spring 5 is formed into a thin plate with four corner rings. A wide part is designed in the center of each side, and holes 5a for fixing the suspension wire component 9 are designed in each corner.

[0101] Terminal 4, like spring 5, is a thin plate forming a four-cornered ring, with a wide portion in the center of each side and holes 4a at each corner for fixing the suspension wire component 9. Furthermore, the coil connection portion 4b extends from the wide portions on opposite sides of one side toward the rear of the first axis direction 25, as shown... Figure 1 As shown, the coil connection part 4b is exposed to the outside from the rear end of the side wall of the main body part 3.

[0102] The wide portion of the spring 5 is fixed to the rear side of the step 15 of the main body 3 via the wide portion of the terminal 4. Therefore, the spring 5 and the terminal 4, excluding the wide portion, become suspended, and the suspension wire member 9 is elastically supported by the spring 5.

[0103] As shown in Figure 3, a thin-walled portion 16 is formed around the through hole on the rear side of the front sidewall of the main body 3. A lens drive mechanism (not shown), which moves the lens of the photographic apparatus in the first axial direction 25, is mounted on the thin-walled portion 16. Therefore, a magnetic fixing plate 6 is mounted on the rear end side of this lens drive mechanism for fixation. Since the position and orientation of the magnetic fixing plate 6 relative to the housing 2 do not change, in this first embodiment, the magnetic fixing plate 6 is also included in the fixing portion.

[0104] like Figure 2As shown, the circuit board 10 is made of FPC and has a flat plate 10a and a side plate 10b. In this first embodiment, the side plate 10b stands upright from opposite sides of the flat plate 10a toward the front of the first axial direction 25, and further extends toward the second axial direction 26 and the third axial direction 27. Figure 1 As shown, the ends of each side plate 10b are mounted on the inner side of the side wall of the main body 3 and exposed on the outside. The camera element assembly 11 is fixed to the front side of the plate 10a and is powered through each side plate 10b. In addition, as shown in FIG3, a metal plate 10c is mounted on the rear side of the plate 10a. The circuit board 10 dissipates heat through the metal plate 10c.

[0105] The drive mechanism 23 has a coil part 8 and a magnet part 7 opposite to the coil part 8, which generates a driving force to move the camera element assembly 11 relative to the housing 2 in the second axis direction 26 or the third axis direction 27.

[0106] The coil section 8 has a first coil 17 that generates a driving force in the third axial direction 27, and a second coil 18 that generates a driving force in the second axial direction 26.

[0107] In this first embodiment, such as Figure 2 , Figure 4A As shown, viewed from the first axial direction 25, the coil section 8 is ring-shaped, a plate-like body with four corners, mounted around the imaging element 13, i.e., the front side of the substrate 12. The coil section 8 sandwiches the imaging element 13 in the middle, and is equipped with a set of first coils 17, 17 and a set of second coils 18, 18. Furthermore, as... Figure 4A As shown, each first coil 17 and each second coil 18 are arranged alternately at 90-degree intervals with the center of the imaging element 13 as the center.

[0108] like Figure 4A As shown, each first coil 17, with a winding axis direction of 25, consists of two straight sections extending in a straight line towards a second axis direction of 26 and two semicircular sections connecting the ends of these two straight sections. Similarly, each second coil 18, with a winding axis direction of 25, consists of two straight sections extending in a straight line towards a third axis direction of 27 and two semicircular sections connecting the ends of these two straight sections. Furthermore, each first coil 17 is arranged along the third axis direction of 27, and each second coil 18 is arranged along the second axis direction of 26. In this first embodiment, each first coil 17 and each second coil 18 sandwiches the imaging element 13 between them and are arranged facing each other.

[0109] In this first embodiment, such as Figure 4AAs shown, each first coil 17 is composed of two first small coils 19, 19, and each second coil 18 is composed of two second small coils 20, 20. Each first small coil 19, with the first axis direction 25 as the winding axis direction, consists of two straight sections extending in a straight line towards the second axis direction 26 and two semicircular sections connecting the ends of these two straight sections. Furthermore, each second small coil 20, with the first axis direction 14 as the winding axis direction, consists of two straight sections extending in a straight line towards the third axis direction 27 and two semicircular sections connecting the ends of these two straight sections. The first small coils 19, 19 of each first coil 17 are arranged along the second axis direction 26, making each straight section a straight line. Similarly, the second small coils 20, 20 of each second coil 18 are arranged along the third axis direction 27, making each straight section a straight line. Furthermore, the first small coils 19, 19 of the first coil 17 on one side, together with the multiple first small coils 19, 19 of the first coil 17 on the other side, sandwich the camera element 13 in the middle, facing each other, while the multiple second small coils 20, 20 of the second coil 18 on one side, together with the second small coils 20, 20 of the second coil 18 on the other side, sandwich the camera element 13 in the middle, facing each other.

[0110] like Figure 4A As shown, the four corners of the coil section 8 are provided with holes 8a for fixing the suspension wire component 9. These holes 8a are located on the outside of the camera element assembly 11.

[0111] The magnet section 7 has a first magnet 7a opposite to each of the first coils 17 and a second magnet 7b opposite to each of the second coils 18. In this first embodiment, as... Figure 2 As shown, the magnet section 7 has a set of first magnets 7a, 7a, and a set of second magnets 7b, 7b, which are quadrangular rods when viewed from the first axial direction 25, and are fixed to the rear side of the magnet fixing plate 6. The first magnet 7a is opposite to the first coil 17 in the first axial direction 25, and the second magnet 7b is opposite to the second coil 18 in the first axial direction 25. Furthermore, each first magnet 7a and each second magnet 7b is arranged at a 90-degree interval with respect to the center of the imaging element 13.

[0112] Each of the first magnet 7a and the second magnet 7b is magnetized such that the magnetic poles of the surfaces opposite to the two straight sections of the first coil 17 and the second coil 18 are different. That is, the magnetized surface of the first magnet 7a is magnetized into different magnetic poles in the third axial direction 27, and the magnetized surface of the second magnet 7b is magnetized into different magnetic poles in the second axial direction 26.

[0113] If current is applied to the first coil 17, an electromagnetic force will be generated in the third axis direction 27, which will drive the camera element assembly 11 to move in the third axis direction 27. If current is applied to the second coil 18, an electromagnetic force will be generated in the second axis direction 26, which will drive the camera element assembly 11 to move in the second axis direction 26.

[0114] If currents in different directions are applied to adjacent first coils 19, 19 of the same first coil 17, electromagnetic forces in opposite directions 27 of the third axis are generated. If currents in different directions are applied to adjacent second coils 20, 20 of the same second coil 18, electromagnetic forces in opposite directions 26 of the second axis are generated. This generates a driving force that causes the camera element assembly 11 to rotate around the center of the camera element 13 in the first direction 25.

[0115] Each first magnet 7a and each second magnet 7b can also be constructed from multiple small magnets, corresponding to the first small coil 19 and the second small coil 20. In this case, the first magnet 7a is composed of two first small magnets opposite to the first small coils 19, 19, and each first small magnet is arranged along the second axis direction 26. Furthermore, the second magnet 7b is composed of two second small magnets opposite to the second small coils 20, 20, and each second small magnet is arranged along the third axis direction 27.

[0116] The support mechanism 24 is a support mechanism that allows the camera element assembly 11 to move relative to the housing 2. In this first embodiment, as... Figure 2 As shown, the support mechanism 24 has four suspension wire components 9 extending in the direction 25 of the first axis. (As...) Figure 3B As shown, the front end of each suspension wire component 9 in the first axial direction 25 is embedded in the four corner holes 4a provided for fixing the terminal 4, and the four corner holes 5a provided for fixing the spring 5. In this case, the suspension wire component 9 is electrically connected to the terminal 4, but not electrically connected to the spring 5. Furthermore, at the rear end of each suspension wire component 9 in the first axial direction 25, the hole 8a for fixing the coil part 8 is embedded and fixed, and the suspension wire component 9 is electrically connected to the coil part 8. Thus, each coil connection part 4b of the terminal 4 is electrically connected to the coil part 8, and power is supplied to the coil part 8 through the terminal 4 and each suspension wire component 9. With this structure, each suspension wire component 9 is connected to the housing 2 and the camera element assembly 11, and can movably support the camera element assembly 11 relative to the housing 2 in the rotational direction around the second axial direction 26, the third axial direction 27, or the first axial direction 25.

[0117] Therefore, in this first embodiment, each suspension wire component 9 connects the housing 2 and the camera element assembly 11, and can movably support the camera element assembly 11 relative to the housing 2 in a rotational direction around the second axial direction 26, the third axial direction 27, or the first axial direction 25. Furthermore, the drive mechanism 23 has a first coil 17 composed of a first small coil 19, a second coil 18 composed of a second small coil 20, a first magnet 7a opposite each first coil 17, and a second magnet 7b opposite each second coil 18. Thus, the drive mechanism 23 can generate a driving force to move the camera element assembly 11 relative to the housing 2 in a rotational direction around the second axial direction 26, the third axial direction 27, or the first axial direction 25.

[0118] The drive mechanism 23 has the following structure: a coil portion 8 is disposed on the camera element assembly 11, and a magnet portion 7 is disposed on the magnet fixing plate 6 constituting the fixing body. A support mechanism supports the camera element assembly 11, allowing it to move relative to the fixing portion. Therefore, the camera element drive mechanism 1A can reduce the thickness of the first axial direction 25.

[0119] In addition to the structure described above, the first coil 17 and the second coil 18 can also adopt other structures. For example, the first small coil 19 and the second small coil 20 can be omitted, and the coils arranged on each side can be made into a single first coil 17 or second coil 18. In this case, although rotational movement is not possible around the first axis direction 25, the structure is simpler.

[0120] In addition, such as Figure 4BAs shown, a set of opposing first coils 17, 17 can be staggered relative to each other in the second axial direction 26, and a set of opposing second coils 18, 18 can be staggered relative to each other in the third axial direction 27. In this case, if current is supplied to each first coil 17 to generate electromagnetic force in the same direction in the third axial direction 27, the camera element assembly 11 moves along that direction in the third axial direction 27. If current is supplied to each second coil 18 to generate electromagnetic force in the same direction in the second axial direction 26, the camera element assembly 11 moves along that direction in the second axial direction 26. If current is supplied to each first coil 17 to generate electromagnetic force in the opposite direction in the third axial direction 27, the electromagnetic forces generated in the common straight section of each first coil 17 in the second axial direction 26 cancel each other out. However, the electromagnetic forces generated in the straight sections 17a, 17a of each first coil 17 that are offset towards the second axial direction 26 do not cancel each other out, but instead act as a rotational force around the first axial direction 25. The situation is similar for the second coil 18. The electromagnetic forces generated by the straight portions 18a, 18a of each second coil 18 that are offset towards the third axis direction 27 do not cancel each other out, but instead act as a rotational force around the first axis direction 25. As a result, the camera element assembly 11 can be moved in a rotational direction around the first axis direction.

[0121] In this first embodiment, the magnet part 7 is fixed to the magnet fixing plate 6. However, it is not limited to this; the magnet fixing plate 6 can also be omitted, and the magnet part 7 can be fixed to the bottom part of the rear side of the lens driving mechanism. Furthermore, when the lens driving mechanism drives the lens by driving the magnet and the driving coil, the driving magnet can also function as the magnet part 7.

[0122] Alternatively, the magnet part 7 can be disposed on the camera element assembly 11, and the coil part 8 can be disposed on the coil fixing plate that replaces the magnet fixing plate 6.

[0123] In addition, the coil section 8 is powered through the terminal 4 and the suspension wire component 9, but it can also be powered through the circuit board 10 and the camera element assembly 11.

[0124] [Second Implementation Form]

[0125] Reference Figure 5A , Figure 5B , Figure 6A , Figure 6B The second embodiment will be described. Compared to the camera element drive mechanism 1A of the first embodiment, the camera element drive mechanism 1B of this second embodiment differs in the arrangement of the coil section 8 and the magnet section 7. Structures unrelated to this change are the same as those in the first embodiment, and therefore their description is omitted.

[0126] The camera element drive mechanism 1B is structured such that the coil portion 8 is disposed on the rearward-facing surface of the camera element assembly 11, and the magnet portion 7 is disposed on the frontward-facing surface of the base plate 14 of the housing 2. For example, as Figure 5A , Figure 5B As shown, the two first small coils 19, 19 of each first coil 17 and the two second small coils 20, 20 of each second coil 18 are positioned at the rear of the camera element assembly 11. Furthermore, two first magnets 7a, 7a and two second magnets 7b, 7b are positioned on the front surface of the base plate 14. Therefore, the magnet fixing plate 6 is not used. In a variation of the second embodiment, the coil portion 8 may be positioned in the housing 2, and the magnet portion 7 may be positioned in the camera element assembly 11.

[0127] And such Figure 5B As shown, the magnetization surface of the magnet part 7 can also magnetize the inner part into a single magnetic pole (e.g., N pole), which is configured to face the inner part of the first coil 17 and the inner part of the second coil 18, and magnetize the outer part into another single magnetic pole (e.g., S pole), which is configured to face the outer part of the first coil 17 and the outer part of the second coil 18.

[0128] Even in this second embodiment, each suspension wire component 9 connects the housing 2 and the camera element assembly 11, and can move relative to the housing 2 in a rotational direction around the second axial direction 26, the third axial direction 27, or the first axial direction 25 to support the camera element assembly 11. Furthermore, the drive mechanism 23 is structured such that the coil portion 8 is disposed on one of the camera element assembly 11 or the housing 2, and the magnet portion 7 is disposed on the other of the camera element assembly 11 or the housing 2. This allows for a reduction in the thickness of the first axial direction 25.

[0129] Furthermore, in this second embodiment, the first coil 17 and the second coil 18 can be configured to overlap with the imaging element 13 when viewed from the first axial direction 25. This reduces the dimensions of the imaging element drive mechanism 1B in both the second axial direction 26 and the third axial direction.

[0130] Furthermore, in this second embodiment, such as Figure 6A As shown, the coil section 8 can be configured. That is, the first coil 17 and the second coil 18 are arranged alternately at 90-degree intervals with the center of the imaging element 13 as the center. One N pole or one S pole of the magnet section 7 is opposite to half of one of the first coil 17 or half of one of the second coil 18. Furthermore, as Figure 6B As shown, the first coil 17 and the second coil 18 can be configured with the second axis direction 26 and the third axis direction 27 rotated 45 degrees relative to the imaging element 13.

[0131] [Third Implementation Form]

[0132] The third embodiment will be described with reference to FIG7. Compared to the camera element drive mechanism 1A of the first embodiment, the camera element drive mechanism 1C of this third embodiment differs in the arrangement of the coil section 8 and the magnet section 7. Structures unrelated to this change are the same as those of the first embodiment, and therefore their description is omitted.

[0133] The coil portion 8 of the camera element drive mechanism 1C is disposed on the outer side of the camera element assembly 11, and the magnet portion 7 is disposed on the inner side of the body portion 3 of the housing 2. For example, as Figure 7A As shown, the two first small coils 19, 19 of each first coil 17 and the two second small coils 20, 20 of each second coil 18 are disposed on the outer peripheral wall of the camera element assembly 11. Furthermore, two first magnets 7a, 7a and two second magnets 7b, 7b are disposed on the inner peripheral wall of the body portion 3 of the housing 2. Therefore, the magnet fixing plate 6 is not used. The outer peripheral wall of the camera element assembly 11 can be erected on the surface of the substrate 12. The coil portion 8 can be disposed in the housing 2, and the magnet portion 7 can be disposed in the camera element assembly 11.

[0134] The first coil 17 is wound along a third axis direction 27, with two straight sections extending towards the second axis direction 26 parallel to the first axis direction 25. Similarly, the second coil 18 is wound along a second axis direction 26, with two straight sections extending towards the third axis direction 27 parallel to the first axis direction 25. The magnetized surface of the first magnet 7a faces the first coil 17 along the third axis direction 27, and its magnetized surface is magnetized, becoming a single magnetic pole. The magnetized surface of the second magnet 7b faces the second coil 18 along the second axis direction 26, and its magnetized surface is magnetized, becoming a single magnetic pole. When current is applied to the first coil 17, an electromagnetic force is generated along the third axis direction 27, causing the camera element assembly 11 to move along the third axis direction 27. When current is applied to the second coil 18, an electromagnetic force is generated along the second axis direction 26, causing the camera element assembly 11 to move along the second axis direction 26. Furthermore, if current is applied to at least one of the adjacent first small coils 19, 19 of the same first coil 17 or the adjacent second small coils 20, 20 of the same second coil 18, causing them to generate an electromagnetic force in the opposite direction, a driving force will be generated to rotate and move around the center of the imaging element 13 in the first axial direction 25.

[0135] like Figure 7B As shown, the substrate 12 of the camera element assembly 11 has holes 12a for fixing the suspension wire component 9 at corresponding positions at the four corners of the camera element 13. In this third embodiment, as... Figure 7AAs shown, the front end of each suspension wire component 9 is embedded in the fixing hole 4a of the terminal 4 and the fixing hole 5a of the spring 5, which is the same as in the first embodiment. However, the rear end of each suspension wire component 9 is not embedded in the coil portion 8, but in the fixing hole 12a of the substrate 12. With this structure, each suspension wire component 9 connects the housing 2 to the camera element assembly 11, and can move to support the camera element assembly 11 in a rotational direction around the second axis direction 26, the third axis direction 27, or the first axis direction 25 relative to the housing 2.

[0136] Even in this third embodiment, each suspension wire component 9 connects the housing 2 to the camera element assembly 11, and can move relative to the housing 2 in rotational directions around the second axial direction 26, the third axial direction 27, or the first axial direction 25 to support the camera element assembly 11. Furthermore, the drive mechanism 23 is structured such that the coil portion 8 is disposed on one of the camera element assembly 11 or the housing 2, and the magnet portion 7 is disposed on the other of the camera element assembly 11 or the housing 2. This allows for a reduction in the thickness of the first axial direction 25. In particular, since the coil portion 8 and the magnet portion 7 are not aligned with the first axial direction 25, the thickness of the first axial direction 25 can be further reduced.

[0137] [Fourth Implementation Form]

[0138] Reference Figure 8A and Figure 8B The fourth embodiment will be described. In this fourth embodiment, the camera element drive mechanism 1D differs from the camera element drive mechanism 1A in that the support mechanism 24 is changed. Structures unrelated to this change are the same as those in the first embodiment, and therefore their description is omitted.

[0139] The support mechanism 24 of the camera element drive mechanism 1D has a magnetic attraction device 28 disposed between the housing 2 and the camera element assembly 11, and the camera element assembly 11 is supported by the spherical member 21 and the magnetic attraction device 28. For example, as Figure 8A As shown, spherical components 21 are respectively provided at the four corners between the magnet section 7 and the coil section 8. Furthermore, magnetic plates 22 are provided on each side of the coil section 8, which are attracted by the magnet section 7. In other words, a magnetic attraction device 28 is formed by the magnet section 7 and the magnetic plates 22, and the camera element assembly 11 is supported by the spherical components 21 being clamped by the magnetic attraction device 28. Therefore, the spring 5 and the suspension wire component 9 are not used. In addition, the terminal 4 is integrated on the circuit board 10, and the circuit board 10 is... Figure 8ANot shown in the diagram, its position can be understood by referring to the first embodiment. With this structure, the spherical component 21 and the magnetic attraction device 28 connect the housing 2 and the camera element assembly 11, allowing the camera element assembly 11 to be moved relative to the housing 2 in rotational directions around the second axis direction 26, the third axis direction 27, or the first axis direction 25. The drive mechanism 23 has a similar structure, with the coil portion 8 disposed on one of the camera element assembly 11 or the housing 2, and the magnet portion 7 disposed on the other. Therefore, in this fourth embodiment, the thickness in the first axis direction 25 can be reduced.

[0140] Furthermore, the magnetic plate 22 is disposed between the two first small coils 19, 19 of each first coil 17 and between the two second small coils 20, 20 of each second coil 18. However, it is not limited to this structure; the magnetic plate 22 may also be disposed on the entire surface opposite to each first magnet 7a and each second magnet 7b. Furthermore, the magnetic plate 22 is a soft magnetic material, but it may also be made of magnets. Additionally, the spherical component 21 may also be made of a soft magnetic material.

[0141] [Implementation forms of photographic devices and electronic devices]

[0142] The image sensor driving mechanisms 1A-1D of each embodiment are installed in electronic devices such as camera devices or smartphones. Each image sensor driving mechanism 1A-1D includes a fixing part, an image sensor assembly 11 movable relative to the fixing part, a driving mechanism 23, and a support mechanism 24. The image sensor assembly 11 has a rectangular image sensor 13. The normal direction of the light-receiving surface of the image sensor 13 is defined as the first axial direction 25, and directions orthogonal to and mutually orthogonal to the first axial direction 25 are defined as the second axial direction 26 and the third axial direction 27. The driving mechanism 23 includes a coil part 8 that drives the image sensor assembly 11 relative to the fixing part in the second axial direction 26 or the third axial direction 27, and a magnet part 7 opposite to the coil part 8. The coil part 8 is disposed on one of the image sensor assembly 11 or the fixing part, and the magnet part 7 is disposed on the other of the image sensor assembly 11 or the fixing part. The support mechanism 24 movably supports the image sensor assembly 11 relative to the fixing part.

[0143] Therefore, the camera element drive mechanisms 1A to 1D can compensate for shake by shifting the sensor, while simultaneously reducing the thickness in the first axial direction 25. Thus, photographic devices and smartphones of this embodiment, which employ the camera element drive mechanisms 1A to 1D, can compensate for shake by shifting the sensor, and can also be manufactured in a thinner form.

[0144] The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to these embodiments, and various modifications can be made within the scope of the claims.

Claims

1. A camera element driving mechanism, characterized in that, have: The device includes a fixed part, a camera element assembly that moves relative to the fixed part, a drive mechanism, a support mechanism, terminals, and a circuit board, wherein the terminals are composed of an FPC and the circuit board is composed of an FPC. The camera element assembly has a rectangular camera element. The normal direction of the light-receiving surface of the camera element is taken as the first axis direction, and directions orthogonal to the first axis direction and mutually orthogonal to each other are taken as the second axis direction and the third axis direction. The driving mechanism includes a coil portion that drives the camera element assembly in the second axis direction or the third axis direction relative to the fixing portion, and a magnet portion opposite to the coil portion. The coil portion is disposed on the camera element assembly. The support mechanism supports the camera element assembly, enabling it to move relative to the fixed part; The fixing part includes a housing fixedly installed inside the photographic device. The housing has a housing body that is quadrangular when viewed from the first axis direction and a plate-shaped bottom plate that is quadrangular when viewed from the first axis direction. The housing body has a front side wall and four side walls. A lens driving mechanism that moves the lens of the photographic device in the first axis direction is installed on the rear side of the front side wall. The magnet is fixed to the bottom part of the rear side of the lens drive mechanism; the camera element assembly is housed in the space formed by the rear end of the side wall of the housing body and the outer edge of the base plate; each of the four side walls of the housing body has a step design at its upper end. The support mechanism has a spring and multiple suspension wire components. The spring and the terminal are both formed into a four-corner ring-shaped thin plate. A wide portion is designed in the center of each side, and holes for fixing the suspension wire components are designed in each corner. The wide portion of the spring is fixed to the rear side of the step of the main body through the wide portion of the terminal. The spring and the terminal outside the wide portion are in a suspended state. The four corners of the coil section or the four corners of the camera element assembly are respectively provided with holes for fixing the suspension wire component; The front end of each of the suspension wire components is embedded in the holes on the spring and the terminal, and the rear end of each of the suspension wire components is embedded in the holes on the coil portion or the camera element assembly to fix the suspension wire component; each of the suspension wire components extends in the direction of the first axis and is connected to the housing and the camera element assembly, and is elastically supported by the spring; the suspension wire component is electrically connected to the terminal and the coil portion, but the suspension wire component is not electrically connected to the spring; The terminal has a coil connection portion that extends rearward in the first axial direction from the wide portions on opposite sides of one side. The coil connection portion is exposed outward from the rear end of the housing body portion and is electrically connected to the coil portion. The coil section is powered through the terminals and each suspension wire component; The circuit board has a flat plate and side plates. The side plates stand upright from opposite sides of the flat plate toward the front side in the first axial direction. Furthermore, the side plates extend toward the second axial direction and the third axial direction. The ends of each side plate are installed on the inner side of the side wall of the housing body and exposed on the outside. The camera element assembly is fixed to the front side of the flat plate and powered through each of the side plates.

2. The camera element driving mechanism according to claim 1, characterized in that, The coil section has a first coil that drives the camera element assembly toward the third axis relative to the fixing section, and a second coil that drives it toward the second axis.

3. The camera element driving mechanism according to claim 2, characterized in that, The first coil and the second coil are arranged at 90-degree intervals around the imaging element.

4. The camera element driving mechanism according to claim 2, characterized in that, There are two first coils, which are arranged along the third axis, and there are two second coils, which are arranged along the second axis.

5. The camera element driving mechanism according to claim 4, characterized in that, The two first coils are staggered relative to each other in the second axial direction, and the two second coils are staggered relative to each other in the third axial direction.

6. The camera element driving mechanism according to claim 4, characterized in that, The first coil is composed of multiple first small coils. The second coil consists of multiple smaller second coils. The plurality of first small coils of the first coil are arranged along the second axial direction. The plurality of second small coils of the second coil are arranged along the third axis direction.

7. The camera element driving mechanism according to claim 2, characterized in that, The first coil and the second coil are wound around the first axis. The first coil is opposite to the magnetized surface of the magnet portion in the first axial direction, and the magnetized surface opposite to the first coil is magnetized at different magnetic poles in the third axial direction. The second coil is opposite to the magnetized surface of the magnet portion in the first axial direction, and the magnetized surface opposite to the second coil is magnetized at different magnetic poles in the second axial direction.

8. The camera element driving mechanism according to claim 7, characterized in that, The coil portion is disposed on one side of the face facing the front of the first axis direction of the camera element assembly or on the face facing the rear.

9. A photographic apparatus, characterized in that, A camera element drive mechanism having any one of claims 1 to 8.

10. An electronic device, characterized in that, A camera element drive mechanism having any one of claims 1 to 8.

Images