Optical member driving device, camera device, and electronic device

Abstract

Provided is an optical member driving device, camera device, and electronic device that can ensure sufficient driving force of a movable section. An optical member tilting movable device (1) includes a fixed section, a movable section having an optical member holding section (7), a support section that links and supports the fixed section and the movable section, and a driving section that drives the movable section. The driving section includes an electromagnet formed by disposing a soft magnetic member (3) inside a winding of a coil (8) and a magnet (9) that opposes the electromagnet. As a result, a stronger magnetic force can be applied. Thus, an optical member tilting movable device, camera device, and electronic device that can ensure sufficient driving force of a movable section can be provided.

Description

TECHNICAL FIELD

[0001] The present application relates to an optical member driving device, a camera device, and an electronic device used in an electronic device such as a smartphone. BACKGROUND

[0002] In a camera device used in an electronic device such as a smartphone, there is a camera device that corrects a shake by tilting a camera module by swinging about axes of X and Y axes that are orthogonal to an optical axis and to each other. As a document that discloses a technology related to such a camera device, there is Patent Literature 1. The portable terminal with a camera disclosed in Patent Literature 1 has a fixed portion including a camera module, a pair of module guides, a magnetic yoke, a ceiling plate, and four permanent magnets; a movable portion including a base, four tilt coils, and a stopper; and a gimbal spring that links the fixed portion and the movable portion. Two of the four permanent magnets and the tilt coils are arranged in opposition in the X-axis direction, and the remaining two are arranged in opposition in the Y-axis direction. When a current flows in the two tilt coils arranged in opposition in the X-axis direction, the movable portion swings about the axis of the Y-axis, and when a current flows in the two tilt coils arranged in opposition in the Y-axis direction, the movable portion swings about the axis of the X-axis.

[0003]

Prior Art Documents

[0004]

Patent Literature

[0005]

Patent Literature 1

[0006]

Problems to be Solved by the Invention

[0007] However, the technology of Patent Literature 1 has a problem in that it is difficult to generate a sufficient electromagnetic force to drive the movable portion because it is a structure in which a member formed by winding a tilt coil is simply stuck to the base.

[0008] The present application was made in view of such a problem, and an object thereof is to provide an optical member driving device, a camera device, and an electronic device that can ensure a sufficient driving force of a movable portion.

[0009]

Means of Solving the Problems

[0010] To solve the above problems, an optical member driving device according to an embodiment of the present application includes: a fixed portion including a base plate portion having a soft magnetic member fixed to an upper surface thereof and a coil; a movable portion including an optical member holding portion holding an optical member, a leaf spring supporting the optical member holding portion so as to be able to tilt with respect to the fixed portion, and a magnet disposed on an inner side of the leaf spring; and a driving portion driving the movable portion, the driving portion including the magnet and the coil, at least one standing portion rising from an inner periphery of a bottom portion of a ring formed by the soft magnetic member fixed to the base plate portion toward the leaf spring disposed above the coil becoming an electromagnet when the coil is energized, and the electromagnet being disposed opposite the magnet of the movable portion.

[0011] In this embodiment, the soft magnetic member can have a bottom portion mounted on the fixed portion and a standing portion rising from the bottom portion, the standing portion being disposed on an inner side of the winding of the coil.

[0012] In addition, the magnet can have a first opposite surface opposite a side portion of the standing portion with the coil interposed therebetween, the first opposite surface being magnetized as one magnetic pole, a normal line direction of the first opposite surface being orthogonal to a direction of the winding axis of the coil, a front end portion end surface of the standing portion being disposed lower than a center of the magnet in a rising direction of the standing portion, an attractive force in a vertical direction being generated when the coil is energized in a predetermined direction and the magnet moves downward, and a repulsive force in the vertical direction being generated when the coil is energized in a direction opposite the predetermined direction and the magnet moves upward.

[0013] In addition, the magnet can have a second opposite surface disposed opposite a front end portion end surface of the standing portion, the second opposite surface being magnetized as one magnetic pole, a normal line direction of the second opposite surface being identical to the direction of the winding axis of the coil, the attractive force in the vertical direction being generated when the coil is energized in the predetermined direction and the magnet moves downward, and the repulsive force in the vertical direction being generated when the coil is energized in the direction opposite the predetermined direction and the magnet moves upward.

[0014] In addition, the leaf spring can be formed of a soft magnetic material and can be disposed opposite the front end portion end surface of the standing portion.

[0015] In addition, the leaf spring can have an outer side portion, an inner side portion, and a gimbal spring portion having a link portion linked to each of the outer side portion and the inner side portion.

[0016] In addition, the optical member can be an AF motor including an image sensor.

[0017] In addition, the optical member can be a prism.

[0018] The camera device according to another preferred embodiment of the present application is characterized by comprising the optical member driving device described above.

[0019] The electronic device according to another preferred embodiment of the present application is characterized by comprising the camera device described above.

[0020]

Effects of Invention

[0021] The optical member driving device according to the present application comprises: a fixed portion; a movable portion having an optical member holding portion that holds an optical member; a support portion that links and supports the fixed portion and the movable portion; and a driving portion that drives the movable portion. Thus, the driving portion has an electromagnet formed by disposing a soft magnetic member inside a winding of a coil and a magnet that opposes the electromagnet. Therefore, it is possible to provide an optical member driving device, a camera device, and an electronic device that can ensure sufficient driving force of the movable portion. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a front view of a smartphone 101 that is an electronic device equipped with a camera device 100 including the optical member tilt movable device 1 according to the first embodiment of the present application.

[0023] Figure 2 is a perspective view of the optical member tilt movable device 1 according to the first embodiment of the present application. Figure 1

[0024] Figure 3 is a perspective view of the optical member tilt movable device 1 according to the first embodiment of the present application, with the cover 25 removed. Figure 2

[0025] Figure 4 is a perspective view of the optical member tilt movable device 1 according to the first embodiment of the present application, with the upper side plate portion 29 removed. Figure 3

[0026] Figure 5 is a perspective view of the optical member tilt movable device 1 according to the first embodiment of the present application, with the lower side plate portion 28 removed. Figure 4

[0027] Figure 6 is a view of the optical member tilt movable device 1 according to the first embodiment of the present application, as viewed from the direction of the arrow A. Figure 5

[0028] Figure 7 is a perspective view of the optical member tilt movable device 1 according to the first embodiment of the present application, as viewed from another angle. Figure 5

[0029] Figure 8 is a perspective view of the optical member tilt movable device 1 according to the first embodiment of the present application, as viewed from another angle. Figure 7

[0030] Figure 9 is a perspective view of the optical member tilt movable device 1 according to the first embodiment of the present application, with a portion of the flat spring 5 removed. Figure 8 ​​​​​​​​

[0031] Figure 10 is a perspective view of the AF motor 15 removed. Figure 9

[0032] Figure 11 is a perspective view of the lower side holding portion 78 removed. Figure 10

[0033] Figure 12 is a perspective view of the AF motor 15 and the optical member holding portion 7 removed. Figure 8

[0034] Figure 13 is a perspective view of the optical member tilt movement device 1A of the second embodiment of the present application, from which the cover 25, the upper side plate portion 29, and the lower side plate portion 28 are removed.

[0035] Figure 14 is a perspective view of the optical member tilt movement device 1A of the second embodiment of the present application, from which the cover 25, the upper side plate portion 29, and the lower side plate portion 28 are removed. Figure 13

[0036] Figure 15 Figure 13 DETAILED DESCRIPTION

[0037] Hereinafter, an embodiment of the present application will be described with reference to the drawings.

[0038] <First Embodiment>

[0039] As shown in FIG. 1, in the present first embodiment, a camera device 100 is mounted in a smartphone 101. The camera device 100 has an AF motor 15 as an optical member, which has a lens body 18 and an image sensor 19 that photoelectrically converts light that has passed through the lens body 18, and an optical member tilt movement device 1 that holds the AF motor 15 so as to tilt and move. AF is an abbreviation of Autofocus. Figure 1 Hereinafter, the optical axis direction along the optical axis of the lens body 18 will be appropriately referred to as the Z direction, one direction orthogonal to the Z direction will be appropriately referred to as the X direction, and a direction orthogonal to both the Z direction and the X direction will be appropriately referred to as the Y direction. In addition, the +Z side of the optical axis of the lens body 18, which is the subject side, will be referred to as the upper side, and the -Z side, which is the opposite side, will be referred to as the lower side.

[0040]

[0041] ​​​​​​​The AF motor 15 has a driving source and an image sensor 19 for driving a lens body 18 inside a body 17, and the lens body 18 protrudes from the upper side of the body 17 and is exposed. A light entrance portion 16 having a right circular shape is provided on the upper side end surface of the lens body 18. The image sensor 19 is fixed so that the light receiving portion thereof faces the lens body 18 on the lower side end surface of the body 17. The AF motor 15 drives the lens body 18 in the front-rear direction in the Z direction as the optical axis direction. The driving source of the AF motor 15 can include a magnet and a coil, a piezoelectric element, a shape memory alloy, and the like, but is not limited thereto.

[0042] The optical member tilting movement device 1 has a housing 2, a leaf spring 5, and an optical member holding portion 7. The housing 2 has a cover 25 and a portion in which a lower side plate portion 28 and an upper side plate portion 29 are combined on a bottom plate portion 20. The cover 25 is assembled to the bottom plate portion 20 from the outside of the lower side plate portion 28 and the upper side plate portion 29. The leaf spring 5 has an outer side portion 56, an inner side portion 54, and a gimbal spring portion 55. The outer side portion 56 of the leaf spring 5 is sandwiched by the upper surface of the lower side plate portion 28 and the lower surface of the upper side plate portion 29, and the optical member holding portion 7 that holds the side surface of the AF motor 15 is fixed to the inner side portion 54 of the leaf spring 5. The cover 25, the bottom plate portion 20, the lower side plate portion 28, the upper side plate portion 29, and the coil 8 of these portions form a fixed portion, and the leaf spring 5, the optical member holding portion 7, and the magnet 9 form a movable portion that moves with respect to the fixed portion.

[0043] Hereinafter, the structural details of each portion will be described. As shown in FIG. 1, the cover 25 has a box shape that is open on one side. A through-hole 250 is provided in the upper surface of the cover 25. Figure 2

[0044] The bottom plate portion 20 has a substantially square shape corresponding to the cover 25. As shown in FIG. 2, the soft magnetic member 3 is fixed to the upper surface of the bottom plate portion 20. Figure 5 Figure 6 Figure 7 Figure 8 As shown in FIG. 2, the soft magnetic member 3 has a substantially quadrangular ring-shaped bottom portion 30, a first standing portion 31 that extends and stands up from the center of each side of the +X side and the X side of the inner periphery of the bottom portion 30 to the inner side, and a second standing portion 32 that extends and stands up from the center of each side of the +Y side and the Y side to the inner side. The coil 8 is wound around the first standing portion 31 and the second standing portion 32, respectively. The first standing portion 31 and the second standing portion 32 are disposed inside the winding of the coil 8. The coil 8 winds around the Z direction as the winding axis, and is wound around, for example, the counterclockwise direction as viewed from the +Z side. The end surface of the front end portion of the first standing portion 31 and the second standing portion 32 and the +Z side surface of each coil 8 are substantially one surface, but the +Z side surface of each coil 8 can be higher, and the end surface of the front end portion of the first standing portion 31 and the second standing portion 32 can also be higher.​​​​

[0045] The lower side plate portion 28 and the upper side plate portion 29 are hollow substantially quadrangular prism shapes. As shown in FIG. 2, in the upper side plate portion 29, a through hole 290 is provided. The lower surface of the lower side plate portion 28 is fixed to the periphery of the bottom portion 30 of the soft magnetic member 3 in the upper surface of the bottom plate portion 20. The peripheral lower surface of the outer side portion 56 of the leaf spring 5 is fixed to the upper surface of the lower side plate portion 28. The lower surface of the upper side plate portion 29 is fixed to the peripheral upper surface of the outer side portion 56 of the leaf spring 5. Thus, the leaf spring 5 is maintained in a state of floating with respect to the bottom plate portion 20. Figure 3

[0046] The leaf spring 5 is formed of a soft magnetic material having elasticity. The leaf spring 5 supports the optical member holding portion 7 so as to be tiltable with respect to the fixed portion. The leaf spring 5 is located at a height between the light incident portion 16 and the light receiving portion of the AF motor 15. The leaf spring 5 has two outer side portions 56, an inner side portion 54, and a gimbal spring portion 55 linking them. The two outer side portions 56 have shapes in which the inner angles of the "O" character are rounded into arcs. The two outer side portions 56 are arranged apart toward the +X side and the -X side, and as a whole, have a substantially square outer shape corresponding to the periphery of the lower side plate portion 28 and the upper side plate portion 29. In the outer side portion 56, the center toward the inner side edge is recessed twice toward the outer side as a recessed portion 560.

[0047] The inner side portion 54 has a rectangular frame shape. In the inner side portion 54, a convex portion 540 is provided on the outer side edge in the X direction. In the inner side portion 54, a first mounting portion 61 mounting the magnet 9 is provided on the inner side edge in the X direction. The first mounting portion 61 is formed by bending a rectangular piece toward the -Z side, the rectangular piece protruding from the center of the inner side edge in the X direction of the inner side portion 54 toward the side opposite to the convex portion 540. The first mounting portion 61 is formed so that the end edge thereof is substantially flush with the surface. In the present first embodiment, the bent end is further bent toward the outer side in the X direction to prevent the magnet 9 from falling as described later.

[0048] The magnet 9 is arranged in the first mounting portion 61. The magnet 9 has a rectangular parallelepiped shape having an opposite surface 96 opposite to the surface facing the coil 8 and a reverse surface 96 on the opposite side. The reverse surface 96 of the magnet 9 is mounted to the first mounting portion 61 and the inner side portion 54. A part of the upper surface is located on the lower side of the convex portion 540. In the present embodiment, the lower surface is also mounted to the portion of the first mounting portion 61 bent toward the outer side in the X direction. As shown in FIG. 2, the leaf spring 5 is arranged so that the outer side portion 56 is located on the outer side of the coil 8 and the inner side portion 54 is located on the inner side of the coil 8. Figure 6 ​​As shown, a lower side portion of the magnet 9 in the first mounting portion 61 and an upper side portion of the coil 8 wound around the first stand portion 31 face each other with a gap therebetween. In the first embodiment, the end surface of the front end portion of the first stand portion 31 is located on the -Z side than the center of the magnet 9. The winding axis direction of the coil 8 wound around the first stand portion 31 is orthogonal to the normal direction of the facing surface 95 of the magnet 9. Further, the facing surface 95 of the magnet 9 is magnetized, for example, to the N pole, and the opposite facing surface 96 is magnetized to the S pole. The upper side surface of the coil 8 faces the end surface of the front end portion of the first stand portion 31 together with the convex portion 540.

[0049] As shown in Figs. 1 and 2, the gimbal spring portion 55 is formed in a ring shape between the outer side portion 56 and the inner side portion 54, is connected to the outer side portion 56 by the connecting portion 551 on the ±X side, and is connected to the inner side portion 54 by the connecting portion 552 on the ±Y side. Figure 4 As shown in Figs. 1 and 2, the gimbal spring portion 55 is formed in a ring shape between the outer side portion 56 and the inner side portion 54, is connected to the outer side portion 56 by the connecting portion 551 on the ±X side, and is connected to the inner side portion 54 by the connecting portion 552 on the ±Y side. Figure 5 As shown in Figs. 1 and 2, the gimbal spring portion 55 is formed in a ring shape between the outer side portion 56 and the inner side portion 54, is connected to the outer side portion 56 by the connecting portion 551 on the ±X side, and is connected to the inner side portion 54 by the connecting portion 552 on the ±Y side. In the gimbal spring portion 55, the portion corresponding to the convex portion 540 of the inner side portion 54 is bent as the bent portion 550 to expand outward in the X direction in the shape of a "U" character. In the center of the bent portion 550, the connecting portion 551 is provided. The connecting portion 551 is connected to the concave portion 560 of the outer side portion 56.

[0050] On the outer side end edge of the gimbal spring portion 55 in the Y direction, the second mounting portion 62 is provided. The second mounting portion 62 is formed by bending a rectangular piece in the -Z direction, and the rectangular piece protrudes outward from the center of the outer side end edge of the gimbal spring portion 55 in the Y direction. The second mounting portion 62 is formed to protrude outward from the end edge. Further, in the first embodiment, the bent front end is further bent inward in the Y direction to prevent the magnet 9 from falling.

[0051] The magnet 9 is arranged in the second mounting portion 62. The opposite facing surface 96, the upper side surface, and the lower side surface of the magnet 9 are respectively mounted on the corresponding surfaces of the second mounting portion 62. A lower side portion of the magnet 9 in the second mounting portion 62 and an upper side portion of the coil 8 wound around the second stand portion 32 face each other with a gap therebetween. In the first embodiment, the end surface of the front end portion of the second stand portion 32 is located on the -Z side than the center of the magnet 9. The winding axis direction of the coil 8 wound around the second stand portion 32 is orthogonal to the normal direction of the facing surface 95 of the magnet 9. Further, the facing surface 95 of the magnet 9 is magnetized, for example, to the N pole, and the opposite facing surface 96 is magnetized to the S pole. The upper side surface of the coil 8 faces the end surface of the front end portion of the second stand portion 32 together with the body portion of the gimbal spring portion 55.

[0052] As shown in Figs. 1 and 2, the gimbal spring portion 55 is formed in a ring shape between the outer side portion 56 and the inner side portion 54, is connected to the outer side portion 56 by the connecting portion 551 on the ±X side, and is connected to the inner side portion 54 by the connecting portion 552 on the ±Y side. Figure 4 As shown in Figs. 1 and 2, the gimbal spring portion 55 is formed in a ring shape between the outer side portion 56 and the inner side portion 54, is connected to the outer side portion 56 by the connecting portion 551 on the ±X side, and is connected to the inner side portion 54 by the connecting portion 552 on the ±Y side. Figure 5 In the center of the inner side end edge of the gimbal spring portion 55 in the Y direction, the connecting portion 552 is provided. The connecting portion 552 is connected to the outer side end edge of the inner side portion 54 in the Y direction.

[0053] Below the inner side of the inner side 54, there is an optical component holding part 7. The optical component holding part 7 is box-shaped with an outer periphery corresponding to the inner side 54. The upper end of the optical component holding part 7 is fixed to the inner side 54. The optical component holding part 7 surrounds the lower side of the AF motor 15 from the outside and the bottom.

[0054] like Figure 3 As shown, the lens body 18 protrudes from the through hole 790 of the body 17 of the AF motor 15, and the body 17 protrudes from the through hole 290 of the upper side plate portion 29. A gap is provided between the through hole 290 and the body 17 so as not to obstruct the tilting movement of the AF motor 15. Additionally, as... Figure 2 As shown, the lens body 18 is exposed in such a way that it also protrudes from the through hole 250 of the cover 25.

[0055] When the coil 8 wound on the first upright portion 31 is energized, the first upright portion 31 becomes an electromagnet with its front end face as the magnetic pole face. When current flows through its end face, for example, as the N pole, the magnet 9 generates reaction forces in the +Z and -Z directions relative to its opposing surface 95, but the reaction force in the +Z direction is greater, so it moves relative to the +Z direction. When current flows through its end face as the S pole, the magnet 9 generates an attractive force relative to the opposing surface 95. In this way, the magnet 9 moves in the -Z direction with the attractive forces in the +Z and -Z directions balanced, aiming for a position where the center position in the Z direction of the opposing surface 95 coincides with the Z direction position of the front end face of the first upright portion 31. When current flows through the coil 8 wound on the first upright portion 31 to generate a reverse force, the connecting portion 552 deforms, and the movable portion oscillates about the Y-axis. Furthermore, when the coil 8 wound in the second upright part 32 is energized, a reaction force or attraction force is generated similarly. When current flows through the coil 8 wound in the second upright part 32 in such a way that a reverse force is generated, the connecting part 551 deforms, and the movable part swings about the X-axis.

[0056] The end faces of the front ends of the first upright portion 31 and the second upright portion 32 face each other to the leaf springs 5, which are respectively made of soft magnetic material. Therefore, the magnetic force of the first upright portion 31 and the second upright portion 32, which are electromagnets, can be increased. In addition, the opposite face 96 of the magnet 9 is mounted on the leaf spring 5, thereby increasing the magnetic force of the magnet 9.

[0057] The above are the details of this first embodiment. The optical component tilting device 1 of this first embodiment includes a fixing part, a movable part having an optical component holding part 7, a support part connecting and supporting the fixing part and the movable part, and a drive part driving the movable part. Thus, the drive part has an electromagnet formed by providing a soft magnetic component 3 inside the winding of the coil 8 and a magnet 9 facing the electromagnet. Therefore, a stronger magnetic force can be applied. Therefore, according to this first embodiment, an optical component tilting device 1, a camera device 100, and an electronic device that can ensure sufficient driving force for the movable part can be provided.

[0058] Furthermore, in the optical component tilting device 1 of this first embodiment, the support portion has a leaf spring 5 formed of a soft magnetic material, the driving portion has a coil 8 and a magnet 9 having a facing surface 95 opposite to the coil 8, and the leaf spring 5 is fixedly located on a facing surface 96 opposite to the facing surface 95 of the magnet 9. Therefore, the leaf spring 5 serves both to support the optical component holding portion 7 and to act as a yoke that increases the magnetic force of the magnet 9, thus eliminating the need to place a yoke, which is another component, near the magnet 9. Therefore, according to this first embodiment, an optical component tilting device 1, a camera device 100, and an electronic device can be provided that can ensure sufficient driving force of the moving portion with fewer components.

[0059] Furthermore, in the optical component tilting device 1 of this first embodiment, the support portion includes a leaf spring 5 that supports the movable portion so that it can tilt relative to the fixed portion. The optical component has a structure with a light-incident portion 16 and a light-receiving portion, and the leaf spring 5 is located at a height between the light-incident portion 16 and the light-receiving portion. Therefore, according to this first embodiment, it is difficult to generate deviations due to the posture difference caused by the thrust when the movable portion swings. Therefore, according to this first embodiment, it is possible to provide an optical component tilting device 1, a camera device 100, and an electronic device with a small maximum required thrust of the movable portion.

[0060] <Second Implementation Method>

[0061] The second embodiment of the present invention will be described. For example... Figure 13 , Figure 14 as well as Figure 15 As shown, the optical component tilting device 1A, the coil 8, the soft magnetic component 3, and the magnet 9 in the second embodiment of the present invention are arranged in a different configuration than those in the first embodiment.

[0062] In the second embodiment, the coil 8 and the magnet 9 are arranged so that the direction in which the coil 8 is wound around the shaft and the direction of the normal line of the facing surface 95 of the magnet 9 coincide. That is, the facing surface 95 of the magnet 9 in the first mounting portion 61 faces the end surface of the front end portion of the first upright portion 31 of the soft magnetic member 3. The opposite surface 96 is fixed to the plate surface on the -Z side of the inner portion 54. The facing surface 95 is magnetized, for example, to the N pole, and the opposite surface 96 is magnetized to the S pole.

[0063] Likewise, the facing surface 95 of the magnet 9 in the second mounting portion 62 faces the end surface of the front end portion of the second upright portion 32 of the soft magnetic member 3. The opposite surface 96 is fixed to the plate surface on the -Z side of the gimbal spring portion 55. The facing surface 95 is magnetized, for example, to the N pole, and the opposite surface 96 is magnetized to the S pole. The leaf spring 5 is formed of a soft magnetic material, and thus the magnetic force of the facing surface 95 of the magnet 9 can be increased.

[0064] When current flows in the coil 8 so that the end surface of the front end portion of the first upright portion 31 or the second upright portion 32 becomes the N pole, a repulsive force is generated in the facing surface 95 of the magnet 9, and the magnet 9 moves in the +Z direction. When current flows in the coil 8 so that the end surface of the front end portion of the first upright portion 31 or the second upright portion 32 becomes the S pole, an attractive force is generated in the facing surface 95 of the magnet 9, and the magnet 9 moves in the -Z direction. When current flows in the coil 8 wound around the first upright portion 31 so that a repulsive force is generated, the connecting portion 552 is deformed, and the movable portion swings around the Y-axis. When current flows in the coil 8 wound around the second upright portion 32 so that a repulsive force is generated, the connecting portion 551 is deformed, and the movable portion swings around the X-axis.

[0065] In addition, in the first embodiment and the second embodiment described above, the optical member can be a prism having an incident surface as a light incident portion and a reflection surface and an exit surface as light receiving portions. In this case, the leaf spring 5 can be further arranged at a position where the Z direction and the center of gravity of the movable portion coincide.

[0066] In addition, in the first embodiment and the second embodiment described above, the facing surface 95 of the magnet 9 can be magnetized to the S pole, and the opposite surface 96 can be magnetized to the N pole. The facing surface 95 and the opposite surface 96 can each be magnetized to one pole. In addition, the coil 8 can be wound in the opposite direction to the first embodiment and the second embodiment, that is, wound in the clockwise direction as viewed from the +Z side.

[0067] Further, the coil 8 is provided in the fixed portion, but for example, it can be provided in the movable portion. In this case, the magnet 9 mounted on the inner side portion 54 of the plate spring 5 is mounted on the outer side portion 56, for example. Further, in the above-described first embodiment and the second embodiment, the optical member tilt movable device has been described, but for example, the plate spring 5 can be a spring having an inner side portion, an outer side portion, and a plurality of wrist portions connecting the inner side portion and the outer side portion. Thus, by making the image sensor have a structure in which the fixed portion and the lens body are provided in the movable portion, the tilt movable device can also have a driving device capable of linearly driving the optical member. That is, the driving portion described in the above-described first embodiment and the second embodiment can be applied to tilt (rotation) driving, and can also be applied to linear driving.

[0068] SYMBOL EXPLANATION

[0069] 1, 1A, optical member tilt movable device; 2, housing; 3, soft magnetic member; 5, plate spring; 7, optical member holding portion; 8, coil; 9, magnet; 15, AF, motor; 16, light incident portion; 17, body; 18, lens body; 19, image sensor; 20, bottom plate portion; 25, cover; 28, lower side plate portion; 29, upper side plate portion; 30, bottom portion; 31, first stand portion; 32, second stand portion; 54, inner side portion; 55, gimbal spring portion; 56, outer side portion; 61, first mounting portion; 62, second mounting portion; 95, facing surface; 96, opposite facing surface; 100, camera device; 101, smartphone; 250, 290, 790, through hole; 540, protruding portion; 550, curved portion; 551, 552, connecting portion; 560, recessed portion; 780, bottom surface.

Claims

1. An optical component driving device, characterized in that, It comprises: a fixing part having a base plate having a soft magnetic component fixed on its upper surface and a coil; a movable part having an optical component holding part for holding an optical component, a leaf spring supporting the optical component holding part so as to be tilted relative to the fixing part, and a magnet disposed on the inner side of the leaf spring; and a drive part for driving the movable part. When the coil is energized, at least one upright portion that rises from the inner periphery of the bottom ring formed by the soft magnetic component fixed to the base plate toward the leaf spring disposed above the coil winding becomes an electromagnet. The electromagnet is disposed opposite to the magnet of the movable portion, and the drive portion includes the magnet and the electromagnet.

2. The optical component driving device according to claim 1, characterized in that, The magnet has a first opposing surface opposite the side of the upright portion, with the coil sandwiched between it; the first opposing surface is magnetized into a magnetic pole. The normal direction of the first opposing surface is orthogonal to the direction of the coil winding axis. In the standing direction of the upright part, the front end face of the upright part is positioned lower than the center of the magnet. When the coil is energized in a predetermined direction, an attractive force is generated in the vertical direction, causing the magnet to move downward. When the coil is energized in a direction opposite to the predetermined direction, a reaction force is generated in the vertical direction, causing the magnet to move upward.

3. The optical component driving device according to claim 1, characterized in that, The magnet has a second opposing surface arranged face-to-face with the front end of the upright portion, and the second opposing surface is magnetized into a magnetic pole. The normal direction of the second opposing surface is consistent with the direction of the coil winding axis. When the coil is energized in a predetermined direction, it generates an attractive force in the vertical direction, causing the magnet to move downward. When the coil is energized in a direction opposite to the predetermined direction, it generates a reaction force in the vertical direction, causing the magnet to move upward.

4. The optical component driving device according to claim 1, characterized in that, The leaf spring is formed of a soft magnetic material and faces the end face of the front end of the upright portion.

5. The optical component driving device according to claim 1, characterized in that, The leaf spring has an outer portion, an inner portion, and a constant-level spring portion having connecting portions that are respectively connected to the outer portion and the inner portion.

6. The optical component driving device according to claim 1, characterized in that, The optical component is an AF motor that includes an image sensor.

7. The optical component driving device according to claim 1, characterized in that, The optical component is a prism.

8. A camera device, characterized in that, The optical component driving device is provided according to any one of claims 1 to 7.

9. An electronic device, characterized in that, The camera device as described in claim 8 is provided.

Images