Optical unit with shake correction function

Abstract

The present application provides an optical unit with a shake correction function, which realizes the miniaturization of a movable body and reduces the outer shape of the optical unit with the shake correction function. The optical unit (1) with the shake correction function performs the shake correction by oscillating the movable body (5). The movable body (5) is provided with a metal holder (11) serving as an outer casing of an optical module (4). A pair of first cutout portions (51, 52) are provided on the holder (11), which are cutout from the diagonal position of the first axis direction from a main body portion (12) to an end plate portion (13) along the optical axis direction. A pair of first arm portions (35) extending from the edges of the circumferential direction of the first cutout portions (51, 52) hold a first gimbal frame receiving member (77). The first gimbal frame receiving member (77) supports a gimbal frame (70) so as to be rotatable around the first axis.

Description

TECHNICAL FIELD

[0001] The present application relates to an optical unit with a shake correction function that performs shake correction by oscillating an optical module. BACKGROUND

[0002] In an optical unit mounted on a portable terminal or a moving body, in order to suppress disturbance of a captured image when the portable terminal or the moving body moves, a mechanism that oscillates or rotates a movable body on which an optical module is mounted to correct shake is provided. Such an optical unit with a shake correction function is disclosed in Patent Literature 1.

[0003] The optical unit with a shake correction function of Patent Literature 1 has a movable body that has a camera module (optical module), a fixed body, an oscillation support mechanism that supports the movable body so as to be rotatable with respect to the fixed body about a rotation axis (X axis, Y axis) that intersects with an optical axis, and a magnetic drive mechanism for oscillation that oscillates the movable body. The movable body has a resin-made holding member that holds the camera module. A magnet of the magnetic drive mechanism for oscillation is fixed to a side surface of the holding member via a metal-made yoke. In addition, at a diagonal position of the holding member, a metal member (gimbal frame receiving member) for connecting a gimbal frame is fixed.

[0004] PRIOR ART DOCUMENTS

[0005] PATENT LITERATURE

[0006] Patent Literature 1: Japanese Patent Application Publication No. 2021-063971 SUMMARY

[0007] The movable body of Patent Literature 1 is provided with the holding member as a member different from the outer housing of the camera module outside the outer housing. Therefore, the side surface of the movable body becomes a structure in which double members are overlapped.

[0008] Since the holding member as a member on the outer periphery is a resin member, the thickness of the plate required to ensure strength is large. In addition, the holding member has a recess at a diagonal position thereof, the recess holds a metal member (gimbal frame receiving member) for connecting a gimbal frame, and a metal plate that functions as a yoke for a magnet is fixed to the holding member on the side of the magnet that fixes the magnet of the magnetic drive mechanism for shake correction. Therefore, there is a limit to reducing the outer shape of the movable body even if it is desired to do so. In addition, the metal member for connecting the gimbal frame or the yoke for the magnet is a member different from the holding member. Therefore, the number of members is large, and the assembly man-hours are large.

[0009] In view of this, an object of the present application is to achieve miniaturization of a movable body and reduction in the outer shape of an optical unit with a shake correction function.

[0010] To solve the above problems, an optical unit with a shake correction function according to the present application is characterized by including: a movable body including an optical module; a fixed body; a gimbal mechanism that supports the movable body so as to be able to swing about a first axis that intersects an optical axis of the optical module with respect to the fixed body, and supports the movable body so as to be able to swing about a second axis that intersects the optical axis and the first axis; and a drive mechanism that causes the movable body to swing about the first axis and the second axis, the gimbal mechanism including: a gimbal frame; a first connection mechanism that connects the movable body and the gimbal frame so as to be able to rotate about the first axis; and a second connection mechanism that connects the fixed body and the gimbal frame so as to be able to rotate about the second axis, the movable body including a metal holder that functions as an outer case of the optical module, the holder including: a main body portion that surrounds an outer periphery of the optical module; and an end plate portion that extends toward an inner periphery from an end portion on one side in the direction of the optical axis of the main body portion, a magnet or a coil of the drive mechanism being fixed to an outer peripheral surface of the main body portion, a pair of first cutout portions being provided to the holder, the pair of first cutout portions being cutout from diagonal positions on both sides in the direction of the first axis of the main body portion to the end plate portion in the direction of the optical axis, a gimbal frame receiving member being held by a pair of first arm portions that extend from edges on both sides in the circumferential direction of the first cutout portions being provided to diagonal positions in the direction of the first axis of the holder, the gimbal frame being supported by the gimbal frame receiving member so as to be able to rotate about the first axis, thereby constituting the first connection mechanism.

[0011] According to the present application, a pair of first cutout portions are provided to diagonal portions in the direction of the first axis of a metal holder that functions as an outer case of an optical module, and a gimbal frame receiving member is held by a pair of arm portions that extend from edges on both sides in the circumferential direction of the first cutout portions. The gimbal frame receiving member supports a gimbal frame so as to be able to rotate about the first axis, thereby constituting a first connection mechanism of a gimbal mechanism. As a result, the number of components can be reduced, and the outer shape of a movable body can be reduced, because the portion in which the outer case and the holder are overlapped in the related art can be constituted by one component. In addition, the metal holder can be reduced in thickness while ensuring strength, and thus the outer shape of the movable body can be further reduced. Furthermore, the gimbal frame receiving member can be disposed on the inner periphery side because the diagonal portions of the holder are cutout to the end plate portion. Thus, the size of the movable body in the diagonal direction can be reduced. As a result, the outer shape of an optical unit with a shake correction function can be reduced.

[0012] In the present application, a pair of second cutout portions is preferably provided on the holding member, the pair of second cutout portions being cut out in the second axial direction from the diagonal position of the main body portion to the end plate portion in the optical axis direction, and the front ends of a pair of second arm portions extending from the edges of the pair of second cutout portions in the circumferential direction are joined to each other.

[0013] In this way, by cutting out the diagonal portion in the second axial direction as well as the diagonal portion in the first axial direction to the end plate portion, the holding member can be manufactured by bending processing of a metal plate when the holding member is manufactured. Therefore, the holding member can be easily manufactured. In addition, by joining the front ends of the pair of second arm portions extending from the edges of the pair of second cutout portions in the circumferential direction to each other, the rigidity of the holding member can be improved. Therefore, the strength of the movable body can be improved.

[0014] In the present application, it is preferable that the gimbal frame receiving member have a ball, the gimbal frame have a gimbal frame main body portion and a pair of first extension portions extending in the optical axis direction at the diagonal position in the first axial direction of the gimbal frame main body portion, a concave curved surface recessed in the first axial direction be provided in the first extension portion, and the ball be in point contact with the concave curved surface. In this way, by inserting the pair of first extension portions into the inner circumferential side of the gimbal frame receiving member, a first connection mechanism can be configured, and therefore, the gimbal mechanism can be easily assembled.

[0015] In the present application, it is preferable that the gimbal frame receiving member have a plate portion that fixes the ball, a pair of first clamping portions that extend in the circumferential direction from the end portion on one side in the optical axis direction of the plate portion and clamp the pair of first arm portions from one side in the optical axis direction, and a pair of second clamping portions that extend in the circumferential direction from the end portion on the other side in the optical axis direction of the plate portion and clamp the pair of first arm portions from the other side in the optical axis direction. In this way, the gimbal frame receiving member can be positioned in the optical axis direction, and the gimbal frame receiving member can be prevented from falling off.

[0016] In the present application, it is preferable that a pair of curved portions extending toward the center in the circumferential direction of the first cutout portion be provided at the front ends of the pair of arm portions, and the gimbal frame receiving member abut against the pair of curved portions from the inner circumferential side. In this way, the gimbal frame receiving member can be arranged on the inner circumferential side, and therefore, the size of the movable body in the diagonal direction can be reduced.

[0017] In the present application, it is preferable that the optical module have: a support body disposed inside the main body portion; a movable body having a lens; and a lens driving mechanism that moves the movable body relative to the support body in the optical axis direction, and that the lens is positioned inside an opening portion provided in the end plate portion, and the edge of the opening portion is opposite the movable body in the optical axis direction to restrict the movable body from flying out of the opening portion. In this way, when an impact caused by a fall or the like is received, the movable body can be prevented from falling out of the outer case and the optical module can be prevented from being damaged.

[0018] In the present application, it is preferable that the main body portion have a positioning portion that positions the magnet in the optical axis direction. In this way, the positional accuracy of the magnet can be improved.

[0019] In the present application, it is preferable that the fixed body have a base that covers the movable body from the other side of the optical axis direction, and that the end portion of the main body portion on the other side of the optical axis direction have a stop portion that extends further to the other side than the end portion of the optical module on the other side of the optical axis direction. In this way, when an impact caused by a fall or the like is received, the optical module can be prevented from colliding with the base.

[0020] In the present application, it is preferable to have: a flexible printed board having a lead-out portion that leads out from the movable body to the outer peripheral side; and a reinforcing plate that is fixed to the flexible printed board, and the holding member has: a pair of clamping plates that are opposite the main body portion from the outer peripheral side and are separated in the circumferential direction; and a pressing plate that extends from the main body portion to the outer peripheral side at a position separated from the lead-out portion in the optical axis direction, and the reinforcing plate is held in an attitude standing up in the optical axis direction by the two end portions extending to both sides in the circumferential direction abutting against the pair of clamping plates from the inner peripheral side, and the flexible printed board extends in the optical axis direction along the reinforcing plate and then bends to the outer peripheral side along the pressing plate. In this way, the flexible printed board can be caused to stand up in the optical axis direction from the position where it is led out from the movable body to the position of the pressing plate, and the flexible printed board can be caused to stand up to an appropriate position and then led out to the outer peripheral side. In addition, the reinforcing plate can be caused to abut against the clamping plates and positioned in an attitude extending in the optical axis direction simply by inserting the reinforcing plate into the inner peripheral side of the clamping plates, and thus, the work of leading out the flexible printed board from the appropriate position is easy to perform.

[0021] In this case, the following structure can be adopted: the holding member is provided with a cutout portion that cuts the main body portion in the optical axis direction, and a pair of connecting portions that are bent from the end of the main body portion in the optical axis direction to the outer circumferential side in the circumferential direction of the cutout portion, and the pair of locking plates are respectively extended from the front end of the connecting portions in the optical axis direction. In this way, by folding back the extension portion that extends from the edge of the main body portion in the optical axis direction in the optical axis direction, the locking plates can be provided.

[0022] Alternatively, the following structure can be adopted: the main body portion is provided with a side plate that constitutes the side surface of the movable body, and is provided with a cutout portion that cuts the side plate in the optical axis direction, the holding member is provided with a pair of connecting portions that are bent from the edge of the side plate on both sides in the circumferential direction to the outer circumferential side, and the pair of locking plates are respectively extended from the front end of the connecting portions in the circumferential direction toward the circumferential center of the side plate.

[0023] In this way, by folding back the extension portion that extends from the edge of the side plate in the circumferential direction in the circumferential direction, the locking plates can be provided.

[0024] In addition, the following structure can be adopted: the pressing plate is provided at the center of the extension portion that extends from the main body portion to the outer circumferential side, and the pair of locking plates are extended from the front end of the extension portion in the optical axis direction on both sides in the circumferential direction of the pressing plate. For example, a cutout portion that cuts the main body portion and is bent to the outer circumferential side can be used as the extension portion, and the pressing plate and the pair of locking plates can be provided at the front end of the extension portion.

[0025] In the present application, it is preferable that the position of the pressing plate in the optical axis direction be closer to the center of oscillation of the movable body than the position at which the flexible printed substrate is drawn from the movable body. In this way, when the movable body oscillates, the flexible printed substrate is bent at a position close to the center of oscillation. Thus, the spring constant of the flexible printed substrate can be reduced, and therefore, the oscillation load of the movable body can be reduced.

[0026] In the present application, it is preferable that at least the surfaces of the locking plates and the reinforcing plate be composed of a metal that is conductive, the reinforcing plate be soldered to the flexible printed substrate, and a ground wiring provided on the flexible printed substrate be electrically connected to the movable body via the reinforcing plate and the locking plates. In this way, by performing the work of routing the flexible printed substrate, the ground of the flexible printed substrate is electrically connected to the movable body. Therefore, the assembly man-hours can be reduced.

[0027] Next, the optical unit with a shake correction function of the present application is characterized in that it has: a movable body that has an optical module; a fixed body; a gimbal mechanism that supports the movable body so as to be able to oscillate about a first axis that intersects an optical axis of the optical module with respect to the fixed body, and supports the movable body so as to be able to oscillate about a second axis that intersects the optical axis and the first axis; and a shake correction drive mechanism that causes the movable body to oscillate about the first axis and the second axis, the gimbal mechanism has: a gimbal frame; a first connection mechanism that connects the movable body and the gimbal frame so as to be able to rotate about the first axis; and a second connection mechanism that connects the fixed body and the gimbal frame so as to be able to rotate about the second axis, the movable body has a metal-made holder that doubles as an outer casing of the optical module, the optical module has: a support body; a moving body that has a lens; and a lens drive mechanism that causes the moving body to move with respect to the support body in the direction of the optical axis, the holder has: a main body portion that surrounds the outer periphery of the support body; and an end plate portion that extends from an end portion on one side in the direction of the optical axis of the main body portion toward the inner periphery, a magnet or a coil of the shake correction drive mechanism is fixed to the outer peripheral surface of the main body portion, when viewed from one side in the direction of the optical axis, the lens is positioned inside an opening portion provided to the end plate portion, and an edge of the opening portion opposes the moving body in the direction of the optical axis so as to restrict the moving body from flying out of the opening portion.

[0028] According to the present application, the optical module of the optical unit with a shake correction function has a lens drive mechanism that causes a moving body having a lens to move in the direction of an optical axis. A metal-made holder that doubles as an outer casing of the optical module has an end plate portion provided to an end portion on one side in the direction of the optical axis, and an edge of an opening portion provided to the end plate portion functions as a position restriction portion that restricts the moving body from flying out of the holder. Therefore, when an impact caused by a fall or the like is received, the moving body can be prevented from falling out of the outer casing and damaging the optical module. In addition, since a portion in which the outer casing and the holder are overlapped as in the past can be constituted with one component, the number of components can be reduced, and the outer shape of the movable body can be reduced. In addition, the metal-made holder can reduce the thickness while ensuring strength, and thus the outer shape of the movable body can be further reduced.

[0029] Effects of the Invention

[0030] According to the present application, a first cutout portion is provided in a corner portion in a first axis direction of a metal holder which serves as an outer case of an optical module, and a gimbal frame receiving member is held by a pair of arm portions extending from edges on both sides in a circumferential direction of the first cutout portion. The gimbal frame receiving member supports a gimbal frame so as to be rotatable about the first axis, and constitutes a first connecting mechanism of a gimbal mechanism. Thus, since the portion in which the outer case and the holder are overlapped in the related art can be constituted by one member, the number of components can be reduced, and the outer shape of the movable body can be reduced. In addition, the metal holder can be reduced in thickness while ensuring strength, and thus the outer shape of the movable body can be further reduced. Further, since the corner portion of the holder is cut out to a large extent to an end plate portion, the gimbal frame receiving member can be disposed on an inner peripheral side. Thus, the size of the movable body in the diagonal direction can be reduced. Therefore, the outer shape of the optical unit with a shake correction function can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a perspective view of an optical unit with a shake correction function to which the present application is applied.

[0032] Figure 2 is Figure 1 is an exploded perspective view of the optical unit with a shake correction function of

[0033] Figure 3 is a sectional view of the optical unit with a shake correction function cut along an XY plane.

[0034] Figure 4 is a sectional view of the optical unit with a shake correction function cut along an XZ plane.

[0035] Figure 5 is a perspective view of a movable body.

[0036] Figure 6 is an exploded perspective view of the movable body.

[0037] Figure 7 is a perspective view of a holder.

[0038] Figure 8 is an exploded perspective view of the holder and a first gimbal frame receiving member.

[0039] Figure 9 is a perspective view showing Modification 1 of a holding structure of a flexible printed substrate.

[0040] Figure 10 is a perspective view showing Modification 2 of a holding structure of a flexible printed substrate. DETAILED DESCRIPTION

[0041] Hereinafter, an embodiment of an optical unit with a shake correction function to which the present application is applied will be described with reference to the drawings.

[0042] (Overall structure)

[0043] Figure 1 is a perspective view of an optical unit 1 with a shake correction function to which the present application is applied. Figure 2 is an exploded perspective view of the optical unit 1 with a shake correction function of Figure 1 Figure 3 is a sectional view of the optical unit 1 with a shake correction function cut in an XY plane, and is a sectional view of the optical unit 1 with a shake correction function cut at the height of a swing center P of a movable body 5. Figure 4 is a sectional view of the optical unit 1 with a shake correction function cut in an XZ plane, and is a sectional view cut at the position of an optical axis L.

[0044] The optical unit 1 with a shake correction function has an optical module 4 that has a substrate 3 on which a lens 2 and an imaging element 4 are mounted. The optical unit 1 with a shake correction function is used for an optical device such as a mobile phone with a camera, a driving recorder, a moving body such as a helmet, a bicycle, a radio-controlled helicopter, or an optical device such as a moving camera or a wearable camera mounted on the optical device. In such an optical device, if shake of the optical device occurs at the time of imaging, disturbance is generated in an imaged image. The optical unit 1 with a shake correction function corrects tilt of the optical module 4 based on acceleration, angular velocity, shake amount, or the like detected by a detection unit such as a gyroscope, in order to avoid inclination of the imaged image.

[0045] The optical unit 1 with a shake correction function rotates the optical module 4 around a first axis R1 (refer to Figure 2 , Figure 3 ) orthogonal to an optical axis L of the lens 2 included in the optical module 4, and rotates the optical module 4 around a second axis R2 orthogonal to the optical axis L and the first axis R1, thereby performing shake correction. The optical unit 1 with a shake correction function of the present embodiment performs pitch correction and yaw correction.

[0046] In the following description, three axes orthogonal to each other are set as an X axis, a Y axis, and a Z axis. The Z axis coincides with the optical axis L. In the case where a plane including the X axis and the Y axis is set as an XY plane, the first axis R1 and the second axis R2 are located on the XY plane. The first axis R1 and the second axis R2 are inclined by 45 degrees with respect to the X axis and the Y axis.

[0047] ​In the following description, the directions along the X-axis, Y-axis, and Z-axis will be designated as the X-axis direction, Y-axis direction, and Z-axis direction, respectively. One side of the X-axis direction will be designated as the -X direction, and the other side as the +X direction; one side of the Y-axis direction will be designated as the -Y direction, and the other side as the +Y direction; one side of the Z-axis direction will be designated as the -Z direction, and the other side as the +Z direction. The X-axis direction is the first direction, and the Y-axis direction is the second direction. The Z-axis direction is along the optical axis L. The +Z direction is one side of the optical axis direction, which is the subject side of the optical module 4. The -Z direction is the other side of the optical axis direction, which is the image side of the optical module 4. Furthermore, the direction along the first axis R1 will be designated as the first axis direction, and the direction along the second axis R2 will be designated as the second axis direction.

[0048] like Figures 1 to 4 As shown, the optical unit 1 with jitter correction function includes: a movable body 5 having an optical module 4; a gimbal mechanism 7; a fixed body 8 supporting the movable body 5 via the gimbal mechanism 7; a jitter correction drive mechanism 6 for swinging the movable body 5; and flexible printed circuit boards 9 and 10. The flexible printed circuit board 9 is connected to the movable body 5. The flexible printed circuit board 10, which supplies power to the jitter correction drive mechanism 6, is fixed to the fixed body 8.

[0049] The gimbal mechanism 7 is a swing support mechanism that supports the movable body 5 so that it can swing about the first axis R1 and the second axis R2. The movable body 5 can rotate in the pitch direction about the X-axis and the deflection direction about the Y-axis by combining the rotation about the first axis R1 and the rotation about the second axis R2.

[0050] The jitter correction drive mechanism 6 includes: a first jitter correction drive mechanism 6X that generates a driving force about the X-axis on the movable body 5; and a second jitter correction drive mechanism 6Y that generates a driving force about the Y-axis on the movable body 5. Figure 4 As shown, in this embodiment, the first jitter correction drive mechanism 6X is disposed in the -Y direction of the movable body 5. The second jitter correction drive mechanism 6Y is disposed in the -X direction of the movable body 5.

[0051] (Moveable body)

[0052] like Figure 2 As shown, the movable body 5 includes an optical module 4 and a metal retainer 11 that holds the optical module 4. The retainer 11 includes a main body 12 surrounding the outer periphery of the optical module 4; and an end plate 13 extending inward from the +Z end of the main body 12. The retainer 11 also serves as the outer housing of the optical module 4. The optical module 4 includes a lens barrel 14 protruding in the +Z direction from an opening 13a provided in the end plate 13, and the lens 2 is held in the lens barrel 14. Figure 4As shown, a substrate 3 is arranged at the end in the -Z direction of the optical module 4. A flexible printed substrate 9 is connected to the substrate 3 on which a camera element is mounted, and is drawn out in the +X direction from the end in the -Z direction of the optical module 4.

[0053] As shown, a first magnet 61X is arranged on the side in the -Y direction of the movable body 5. In addition, a second magnet 61Y is arranged on the side in the -X direction of the movable body 5. The first magnet 61X and the second magnet 61Y are polarized in the Z-axis direction. The first magnet 61X and the second magnet 61Y are fixed to the main body portion 12 of the holding member 11. Figure 3

[0054] (Fixed body)

[0055] As shown, the fixed body 8 has a housing 20 that surrounds the outer periphery of the movable body 5, a base 21 that is fixed to the housing 20 in the -Z direction, and a cover 22 that covers the housing 20 in the +Z direction. The housing 20 is made of resin, and the base 21 and the cover 22 are made of metal. Figure 2 Figure 4 The housing 20 is housed between the base 21 and the cover 22. As shown,

[0056] The movable body 5 and a part of the gimbal mechanism 7 protrude in the +Z direction from an opening portion 22a of the cover 22. Figure 1 Figure 4 The housing 20 has a frame portion 23 that surrounds the movable body 5, and a wiring housing portion 24 that extends in the +X direction from the frame portion 23. The frame portion 23 has a first side wall 25 that extends in the Y-axis direction in the +X direction of the movable body 5. As shown,

[0057] The flexible printed substrate 9 drawn out in the +X direction from a cutout portion 26 provided on the first side wall 25 is housed between the base 21 and the wiring housing portion 24, and is drawn out in the -Y direction from the wiring housing portion 24 (see Figure 4 Figure 1 As shown, a first coil 62X is arranged on the side in the -Y direction of the frame portion 23.

[0058] In addition, a second coil 62Y is arranged on the side in the -X direction of the frame portion 23. As shown, the first coil 62X and the second coil 62Y are arranged in coil arrangement holes 27, 28 provided in the frame portion 23. The first coil 62X and the second coil 62Y are long circular air-core coils that are long in the circumferential direction. The first coil 62X and the second coil 62Y are electrically connected to the flexible printed substrate 10. The flexible printed substrate 10 is drawn along the side in the -X direction and the side in the -Y direction of the frame portion 23. Figure 3

[0059] In addition, a second coil 62Y is arranged on the side in the -X direction of the frame portion 23. As shown, the first coil 62X and the second coil 62Y are arranged in coil arrangement holes 27, 28 provided in the frame portion 23. The first coil 62X and the second coil 62Y are long circular air-core coils that are long in the circumferential direction. The first coil 62X and the second coil 62Y are electrically connected to the flexible printed substrate 10. The flexible printed substrate 10 is drawn along the side in the -X direction and the side in the -Y direction of the frame portion 23. Figure 2

[0060] (Gimbal mechanism)​​​​​​

[0061] As shown in Figure 2 , Figure 3 , the gimbal mechanism 7 includes a gimbal frame 70, a first connecting mechanism 71, and a second connecting mechanism 72. The first connecting mechanism 71 connects the gimbal frame 70 and the movable body 5 in a manner rotatable about the first axis R1 at diagonally opposite positions in the first axis direction of the movable body 5. The second connecting mechanism 72 connects the gimbal frame 70 and the housing 20 in a manner rotatable about the second axis R2 at diagonally opposite positions in the second axis direction of the frame portion 23 in the fixed body 8. When the gimbal mechanism 7 is configured, the movable body 5 is able to swing with the intersection of the optical axis L, the first axis R1, and the second axis R2, i.e., the swing center P (refer to Figure 3 , Figure 4 ) as the center.

[0062] The gimbal frame 70 is configured of a plate spring made of metal. As shown in Figure 2 , the gimbal frame 70 includes a gimbal frame main body portion 74 having an opening portion 73 in which the lens barrel 14 of the optical module 4 is disposed, a pair of first extension portions 75 protruding from the gimbal frame main body portion 74 to both sides in the first axis direction and extending in the -Z direction, and a pair of second extension portions 76 protruding from the gimbal frame main body portion 74 to both sides in the second axis direction and extending in the -Z direction.

[0063] The first connecting mechanism 71 and the second connecting mechanism 72 include a first gimbal frame receiving member 77 and a second gimbal frame receiving member 78 as gimbal frame receiving members that make point contact with the gimbal frame 70. The first connecting mechanism 71 is configured of the pair of first gimbal frame receiving members 77 fixed to diagonally opposite portions in the first axis direction of the movable body 5 and the pair of first extension portions 75 provided on the gimbal frame 70. Each first gimbal frame receiving member 77 includes a spherical body 79. On the other hand, each first extension portion 75 has a concave curved surface recessed toward the radial inner side at the front end. As shown in Figure 3 , the first extension portion 75 is inserted in the gap between each first gimbal frame receiving member 77 and the optical module 4, and the concave curved surface of the first extension portion 75 makes point contact with the spherical body 79 in the first axis R1, thereby configuring the first connecting mechanism 71.

[0064] The second connecting mechanism 72 consists of a pair of second universal joint frame bearing members 78 fixed to the diagonal portion of the frame portion 23 in the second axial direction and a pair of second extension portions 76 provided on the universal joint frame 70. Each second universal joint frame bearing member 78 has a ball 80. On the other hand, each second extension portion 76 has a concave surface that is recessed radially inward. The second extension portions 76 are inserted into the gap between each second universal joint frame bearing member 78 and the frame portion 23, and the concave surface of the second extension portion 76 makes point contact with the ball 80 on the second axis R2, thereby forming the second connecting mechanism 72.

[0065] (Jitter correction drive mechanism)

[0066] When the gimbal mechanism 7 is constructed, the first magnet 61X fixed to the side of the movable body 5 in the -Y direction and the first coil 62X fixed to the housing 20 are opposite each other in the Y-axis direction, forming the first jitter correction drive mechanism 6X (see reference). Figure 3 Therefore, by supplying power to the first coil 62X, the movable body 5 rotates about the X-axis. Furthermore, the second magnet 61Y, fixed to the side of the movable body 5 in the -X direction, and the second coil 62Y, fixed to the housing 20, are opposite each other in the X-axis direction, forming the second jitter correction drive mechanism 6Y (see reference). Figure 3 Therefore, by supplying power to the second coil 62Y, the movable body 5 rotates about the Y-axis. The jitter correction drive mechanism 6 combines the rotation of the movable body 5 about the X-axis caused by the first jitter correction drive mechanism 6X and the rotation of the movable body 5 about the Y-axis caused by the second jitter correction drive mechanism 6Y, causing the movable body 5 to rotate about the first axis R1 and the second axis R2.

[0067] (Optical module)

[0068] Figure 5 This is a three-dimensional diagram of movable body 5. Figure 6 This is an exploded three-dimensional diagram of movable body 5. (Example) Figure 3 , Figure 4 , Figure 6 As shown, the optical module 4 includes: a support 15 fixed inside the retainer 11; a movable body 16 having a lens 2 and a lens barrel 14; and a lens drive mechanism 17 for moving the movable body 16 relative to the support 15 along the optical axis. A substrate 3 is disposed at the end of the support 15 in the -Z direction. Figure 4 , Figure 5 As shown, the inner periphery of the opening 13a provided on the end plate portion 13 of the retainer 11 is opposite to the outer periphery of the moving body 16 in the optical axis direction. Therefore, the inner periphery of the opening 13a of the end plate portion 13 functions as a position limiting portion that restricts the moving body 16 from flying out of the opening 13a in the +Z direction.

[0069] The lens driving mechanism 17 is a magnetic driving mechanism. As shown in Figure 4 , Figure 6 , the lens driving mechanism 17 includes a magnet 171 disposed on the +X direction side of the movable body 16 and a coil 172 disposed on the support body 15. A substrate 173 connected to the coil 172 is disposed on the +X direction side of the support body 15. A magnetic yoke 174 overlaps the magnet 171 on the side opposite the coil 172. The magnet 171 and the coil 172 extend in the Y axis direction and oppose each other in the X axis direction. The magnet 171 is polarized in the Z axis direction.

[0070] In the present embodiment, the holder 11 that holds the optical module 4 is composed of a non-magnetic metal. For example, it is composed of an austenitic stainless steel such as SUS305, SUS304, or the like. Therefore, the magnet 171 of the lens driving mechanism 17 can be prevented from being attracted to the holder 11.

[0071] The first magnet 61X and the second magnet 61Y are fixed to the main body portion 12 of the holder 11 via a magnetic yoke not shown.

[0072] The lens driving mechanism 17 is disposed in the +X direction with respect to the optical axis L of the optical module 4. On the other hand, the shake correction driving mechanism 6 is disposed on the -X direction side and the -Y direction side of the movable body 5 and is disposed in the -X direction and the Y direction with respect to the optical axis L. Therefore, the lens driving mechanism 17 and the shake correction driving mechanism 6 are disposed on different sides with respect to the optical axis L. Thus, the magnetic interference of the magnet of the shake correction driving mechanism 6 on the lens driving mechanism 17 can be suppressed.

[0073] As shown in Figure 4 , Figure 6 , the outer peripheral surface of the optical module 4 is composed of the support body 15. The diagonal portions in the first axis direction and the second axis direction of the optical module 4 are chamfered and are octagonal when viewed in the Z axis direction. The outer peripheral surface of the optical module 4 includes a first side surface 41 and a third side surface 43 that oppose each other in the X axis direction (first direction) and a second side surface 42 and a fourth side surface 44 that oppose each other in the Y axis direction (second direction). The first side surface 41 faces the -X direction, the second side surface 42 faces the -Y direction, the third side surface 43 faces the +X direction, and the fourth side surface 44 faces the +Y direction. In addition, the outer peripheral surface of the optical module 4 includes a fifth side surface 45 and a sixth side surface 46 that oppose each other in the first axis direction and a seventh side surface 47 and an eighth side surface 48 that oppose each other in the second axis direction. The fifth side surface 45 is located between the first side surface 41 and the second side surface 42. The sixth side surface 46 is located between the third side surface 43 and the fourth side surface 44.

[0074] On the outer peripheral surface of the optical module 4, the third side surface 43 toward the +X direction is largely cut in the -Z direction, where the substrate 173 of the lens driving mechanism 17 is disposed. In addition, a claw portion 49 is formed in the center of the first side surface 41 toward the -X direction, the second side surface 42 toward the -Y direction, and the fourth side surface 44 toward the +Y direction. By the claw portion 49 being engaged with the engagement hole 50 provided on the main body portion 12 of the holder 11, the holder 11 is restricted from falling off from the support body 15. The claw portion 49 is shaped so that the protruding dimension increases as it protrudes from the side surface toward the -Z direction, and the protruding dimension is largest at the end portion in the -Z direction. Therefore, when the optical module 4 is inserted into the inside of the main body portion 12 of the holder 11 from the -Z direction, the main body portion 12 can be inserted while being flexed outward in the peripheral direction along the surface of the claw portion 49.

[0075] (holder)

[0076] Figure 7 (a) is a perspective view of the holder 11 as viewed from the +Y direction, Figure 7 (b) is a perspective view of the holder 11 as viewed from the -Y direction. Figure 8 is an exploded perspective view of the holder 11 and the first gimbal frame receiving member 77. The holder 11 is manufactured by bending processing of a metal plate. The main body portion 12 of the holder 11 has a first side plate 31 toward the -X direction, a second side plate 32 toward the -Y direction, a third side plate 33 toward the +X direction, and a fourth side plate 34 toward the +Y direction. The end portions in the +Z direction of the first side plate 31, the second side plate 32, the third side plate 33, and the fourth side plate 34 are connected to the end plate portion 13. A rectangular engagement hole 50 is provided at the center of each of the first side plate 31, the second side plate 32, and the fourth side plate 34.

[0077] A pair of first cutout portions 51, 52 is provided at diagonally opposite positions in the first axis direction of the holder 11. The first cutout portions 51, 52 are largely cut in the optical axis direction from the end portion in the -Z direction of the main body portion 12 to the outer peripheral portion of the end plate portion 13. A pair of first arm portions 35 extends outward in the peripheral direction substantially in parallel with the first axis direction from the edges on both sides of the first cutout portions 51, 52.

[0078] A first gimbal frame receiving member 77 held by the pair of first arm portions 35 is disposed at diagonally opposite positions in the first axis direction of the holder 11. A bent portion 36 is provided at the front end of each of the first arm portions 35, which is bent toward the center in the peripheral direction of the first cutout portions 51, 52. The central portion in the optical axis direction of the first gimbal frame receiving member 77 is inserted between the pair of first arm portions 35, and abuts against the pair of bent portions 36 from the inner peripheral side.

[0079] As Figure 8As shown, the first gimbal frame receiving member 77 has a plate portion 81 extending in the Z-axis direction, a pair of first locking portions 82 extending from the +Z-direction end of the plate portion 81 to both sides in the circumferential direction, and a pair of second locking portions 83 extending from the -Z-direction end of the plate portion 81 to both sides in the circumferential direction. In addition, the first gimbal frame receiving member 77 has a pair of bent portions 84 extending from both ends of the plate portion 81 in the circumferential direction substantially parallel to the first axis direction, between the first locking portions 82 and the second locking portions 83. A spherical body 79 is fixed in a hole 85 in the center of the plate portion 81. The second locking portions 83 and the bent portions 84 are bent inward from the plate portion 81, and the spherical body 79 is disposed inward from the plate portion 81.

[0080] When the first gimbal frame receiving member 77 is fixed at the diagonal position in the first axis direction of the holder 11, the following procedure is followed. First, the pair of second locking portions 83 provided at the -Z-direction end are bent to the same angle as the pair of bent portions 84, and the first gimbal frame receiving member 77 is inserted from the +Z-direction between the pair of first arm portions 35 provided in the holder 11. After the first gimbal frame receiving member 77 is inserted until each first locking portion 82 abuts the first arm portion 35 from the +Z-direction, when the pair of second locking portions 83 are opened to both sides in the circumferential direction, the pair of second locking portions 83 are locked from the -Z-direction with the pair of first arm portions 35. Then, the plate portion 81 is made to abut the bent portion 36 provided at the front end of the first arm portion 35 from the inner circumferential side, and the plate portion 81 is fixed to the bent portion 36 by welding or an adhesive.

[0081] A pair of second cutout portions 53, 54 are provided at the diagonal positions on both sides in the second axis direction of the holder 11. The second cutout portions 53, 54 are cut out substantially in the optical axis direction from the -Z-direction end of the main body portion 12 to the outer circumferential portion of the end plate portion 13. A pair of second arm portions 37 extend from the edges on both sides in the circumferential direction of the second cutout portions 53, 54. A bent portion 38 bent in a direction orthogonal to the second axis R2 is provided at the front end of each second arm portion 37, and the front ends of the bent portions 38 abut and join each other.

[0082] As Figure 7As shown in (b), the first side plate 31 and the second side plate 32 of the retaining member 11 each have a positioning portion 39, which positions the magnets (first magnet 61X and second magnet 61Y) of the jitter correction drive mechanism 6 in the optical axis direction. The positioning portion 39 is a curved portion formed by bending the central portion of the -Z direction end of the first side plate 31 and the second side plate 32 outward. In addition, the first side plate 31 and the second side plate 32 each have a positioning portion 40, which positions the magnets (first magnet 61X and second magnet 61Y) of the jitter correction drive mechanism 6 in the circumferential direction. The positioning portion 40 of the first side plate 31 is a curved portion formed by bending the +Y direction end of the first side plate 31 outward. The positioning portion 40 of the second side plate 32 is a curved portion formed by bending the +X direction end of the second side plate 32 outward.

[0083] The retainer 11 includes a stop portion 18 that extends further in the -Z direction than the end of the optical module 4 in the -Z direction. The stop portion 18 is provided at two locations at both ends of the fourth side plate 34 in the X-axis direction. The stop portion is opposite to the base 21 that covers the optical module 4 in the -Z direction.

[0084] The third side plate 33 of the retainer 11 includes: a cutout 57 that cuts through the central portion in the Y-axis direction along the +Z direction; a pair of locking plates 58 disposed on both sides (both sides in the Y-axis direction) of the cutout 57 in the circumferential direction; and a pressure plate 59 extending from the edge of the cutout 57 in the +Z direction along the +X direction. The pair of locking plates 58 are respectively located in the +X direction of the third side plate 33 and are connected to the third side plate 33 via a connecting portion 60 extending from the end of the third side plate 33 in the -Z direction towards the +X direction.

[0085] (Flexible printed circuit board)

[0086] like Figure 2 , Figure 4 As shown, the flexible printed circuit board 9 includes: an extension portion 91 extending from the bottom of the optical module 4 in the +X direction; an erection portion 92 rising from the extension portion 91 in the +Z direction; a planar portion 93 extending from the erection portion 92 in the +X direction; and a connecting portion 94 extending from the planar portion 93 in the -Y direction and extending outward to the outside of the fixing body 8. The connecting portion 94 is connected to the main body of the optical device on which the optical unit 1 with jitter correction function is installed.

[0087] A reinforcing plate 90 extending along the Y-axis is fixed to the upright portion 92 of the flexible printed circuit board 9. Both ends of the reinforcing plate 90 in the Y-axis direction extend circumferentially to the cutout portion 57 of the third side plate 33 of the retainer 11. (Example:) Figure 5As shown, when the two ends of the reinforcing plate 90 in the Y-axis direction are inserted between the pair of locking plates 58 and the third side plate 33 provided on the retaining member 11, the reinforcing plate 90 is pressed against the locking plates 58 by the restoring force of the flexible printed circuit board 9 bending in the +Z direction to return to its original shape. Thus, the reinforcing plate 90 and the upright portion 92 are held in a posture extending along the optical axis. Furthermore, the flexible printed circuit board 9, extending along the optical axis in the +Z direction of the reinforcing plate 90, bends in the +X direction upon contact with the pressure plate 59. Thus, the flat portion 93 is positioned at the height of the pressure plate 59.

[0088] The width of the upright portion 92 in the Y-axis direction of the flexible printed circuit board 9 is wider than that of the reinforcing plate 90. The reinforcing plate 90 is at least made of a conductive metal on its surface and is fixed to the upright portion 92 by soldering its two ends in the Y-axis direction to the surface of the upright portion 92. By soldering the reinforcing plate 90 to the upright portion 92, the grounding wiring provided on the flexible printed circuit board 9 is electrically connected to the reinforcing plate 90. As described above, since the reinforcing plate 90 is pressed against the retaining plate 58 of the retaining member 11, the grounding wiring of the retaining member 11 and the flexible printed circuit board 9 is electrically connected through the reinforcing plate 90. Therefore, the flexible printed circuit board 9 is grounded via the retaining member 11 and the reinforcing plate 90. In order to achieve electrical conductivity with the flexible printed circuit board 9 by contacting the reinforcing plate 90, the retaining member 11 is provided with a conductive metal at least on the surface of the retaining plate 58. For example, the retaining member 11 and the reinforcing plate 90 are subjected to a conductive plating treatment such as nickel plating.

[0089] In this embodiment, in the flexible printed circuit board 9, the portion from the lead-out portion 91 to the planar portion 93 is a three-layer stacked structure consisting of a first layer 901, a second layer 902, and a third layer 903 (see reference). Figure 4 Furthermore, the number of layers in the laminated structure is not limited to three. The first layer 901, the second layer 902, and the third layer 903 are all double-sided substrates with wiring formed on both sides, but a structure where wiring is formed only on one side is also possible. Additionally, each layer has a non-bonded area that is not bonded to other layers. For example, the planar portion 93 is a non-bonded area.

[0090] The flexible printed circuit board 9 includes a fixed portion 95 that is fixed to the fixing body 8. In this embodiment, the fixed portion 95 is provided between the planar portion 93 and the connecting portion 94. The fixed portion 95 is, for example, made of a rigid substrate. By fixing the fixed portion 95 to the wiring storage portion 24, the flexible printed circuit board 9 is fixed to the fixing body 8.

[0091] like Figure 4 As shown, the planar portion 93 of the flexible printed circuit board 9 is positioned on an imaginary plane V that passes through the swing center P of the movable body 5 and is perpendicular to the optical axis L by a pressure plate 59 provided on the third side plate 33 of the holding member 11. Figure 2As shown, the flat portion 93 has an in-plane curved portion 96 curved in the virtual plane V. The in-plane curved portion 96 is folded back once in the Y-axis direction.

[0092] (Effects of the Present Embodiment)

[0093] As described above, the optical unit 1 with a shake correction function of the present embodiment has: the movable body 5 provided with the optical module 4; the fixed body 8; the gimbal mechanism 7 that supports the movable body 5 so as to be able to swing about a first axis intersecting the optical axis L of the optical module 4 with respect to the fixed body 8, and supports the movable body 5 so as to be able to swing about a second axis intersecting the optical axis L and the first axis R1; and the shake correction drive mechanism 6 that swings the movable body 5 about the first axis and the second axis. The gimbal mechanism 7 has: a gimbal frame 70; a first connection mechanism 71 that connects the movable body 5 and the gimbal frame 70 so as to be able to rotate about the first axis; and a second connection mechanism 72 that connects the fixed body 8 and the gimbal frame 70 so as to be able to rotate about the second axis. The movable body 5 has the metal-made holder 11 that doubles as an exterior housing of the optical module 4, the holder 11 has: a main body portion 12 that surrounds the outer periphery of the optical module 4; and an end plate portion 13 that extends from an end portion of the main body portion 12 on the +Z direction (one side of the optical axis direction) to the inner periphery, and magnets (first magnets 61X, second magnets 61Y) of the shake correction drive mechanism 6 are fixed to the outer peripheral surface of the main body portion 12. A pair of first cutout portions 51, 52 are provided on the holder 11, the pair of first cutout portions 51, 52 are cutout from the diagonal positions on both sides of the first axis direction to the end plate portion 13 along the optical axis direction, and a pair of first gimbal frame receiving members 77 are held on a pair of first arm portions 35 extending from the edges on both sides of the circumference in each of the first cutout portions 51, 52. The gimbal frame 70 is supported by the first gimbal frame receiving members 77 so as to be able to rotate about the first axis, thereby constituting the first connection mechanism 71.

[0094] In the present embodiment, since the portion in which the exterior housing and the resin-made holder are overlapped in the related art can be constituted by the holder 11 of one member, the number of members can be reduced, and the outer shape of the movable body 5 can be reduced. In addition, the metal-made holder 11 can reduce the plate thickness while ensuring the strength, and thus the outer shape of the movable body 5 can be further reduced. Moreover, since the diagonal portion of the holder 11 is largely cutout to the end plate portion 13, the first gimbal frame receiving members 77 can be disposed at a position closer to the inner periphery than in the related art. Thus, the size of the movable body 5 in the diagonal direction can be reduced, and the outer shape of the optical unit with a shake correction function can be reduced.

[0095] On the holder 11 of the present embodiment, a pair of second cutout portions 53, 54 are provided, which are cutout from the diagonal positions on both sides in the second axial direction from the main body portion 12 to the end plate portion 13 in the optical axis direction, and the tips of a pair of second arm portions 37 extending from both edges in the circumferential direction in each of the second cutout portions 53, 54 are joined to each other. In this way, by cutting out the diagonal portions in the second axial direction as well as the diagonal portions in the first axial direction to the end plate portion 13 to a large extent, the holder 11 can be manufactured by bending processing of a metal plate at the time of manufacturing. Therefore, the manufacturing of the holder 11 is easy. In addition, by butting and joining the tips of the pair of second arm portions 37, the rigidity of the holder 11 can be improved. Therefore, the strength of the movable body 5 can be improved.

[0096] In the present embodiment, the first connecting mechanism 71 is configured by the ball 79 fixed on the plate portion 81 of the first gimbal frame receiving member 77 and the concave curved surface provided on the first extension provided portion 75 of the gimbal frame 70 in point contact in the first axis R1. The first connecting mechanism 71 can be connected by flexing the pair of first extension provided portions 75 to the inner circumferential side and inserting between the first gimbal frame receiving member 77 and the support body 15, and therefore, the assembly of the gimbal mechanism 7 is easy. In addition, the movable body 5 is in a shape in which the diagonal portions are chamfered, and the first connecting mechanism 71 is provided at the chamfered portions, and therefore, the size in the diagonal direction of the movable body 5 and the gimbal mechanism 7 can be reduced.

[0097] In the present embodiment, the first gimbal frame receiving member 77 has: the plate portion 81 that fixes the ball 79; a pair of first clamping portions 82 that extend to both sides in the circumferential direction from the end portion in the +Z direction (one side in the optical axis direction) of the plate portion 81; and a pair of second clamping portions 83 that extend to both sides in the circumferential direction from the end portion in the -Z direction (the other side in the optical axis direction) of the plate portion 81. The pair of first clamping portions 82 are clamped to the pair of first arm portions 35 from the +Z direction, and the pair of second clamping portions 83 are clamped to the pair of first arm portions 35 from the -Z direction. If such a member shape is adopted, by bending either one of the first clamping portion 82 and the second clamping portion 83 to the inner side, inserting the first gimbal frame receiving member 77 between the pair of first arm portions 35, and then opening the bent clamping portion to the outer side, the first gimbal frame receiving member 77 can be held between the pair of first arm portions 35. Thereby, the first gimbal frame receiving member 77 can be easily positioned in the optical axis direction. In addition, the detachment of the first gimbal frame receiving member 77 can be prevented.

[0098] In addition, in the present embodiment, the ball 79 fixed to the plate portion 81 of the first gimbal frame receiving member 77 is brought into point contact with the concave curved surface provided on the first extension provided portion 75 of the gimbal frame 70 to constitute the first connecting mechanism 71, but instead of the ball 79, a convex curved surface protruding in the first axis direction can be formed on the plate portion 81 by press working. In addition, in the present embodiment, the outer peripheral surface (convex curved surface) of the ball 79 is brought into point contact with the concave curved surface provided on the gimbal frame 70, but the concave and convex can be reversed. That is, a structure in which a concave curved surface provided on the plate portion 81 is brought into point contact with a convex curved surface protruding in the first axis direction or a ball provided on the first extension provided portion 75 can also be adopted. In addition, in the second gimbal frame receiving member 78 as well, instead of the ball 80, a convex curved surface can be provided by press working, and the concave and convex of the portion at which the second gimbal frame receiving member 78 is brought into point contact with the second extension provided portion 76 can be reversed.

[0099] In the present embodiment, at a diagonal position in the first axis direction of the holder 11, a pair of curved portions 36 extending toward the center of the circumferential direction of the first cutout portion 51 or the first cutout portion 52 are provided at the front ends of the pair of first arm portions 35, and the first gimbal frame receiving member 77 abuts against the pair of curved portions 36 from the inner peripheral side. In this way, by arranging the first gimbal frame receiving member 77 on the inner peripheral side, the size of the movable body 5 in the diagonal direction can be reduced. In addition, when the first extension provided portion 75 of the gimbal frame 70 is bent toward the inner peripheral side and the first gimbal frame receiving member 77 is inserted into the inner side of the first gimbal frame receiving member 77 to assemble the gimbal mechanism 7, the first gimbal frame receiving member 77 pushed by the first extension provided portion 75 can be supported from the outer peripheral side.

[0100] The optical module 4 of the present embodiment is provided with an auto focus mechanism that moves the movable body 16 provided with the lens 2 in the optical axis direction. That is, the optical module 4 is provided with: the support body 15 arranged on the inner side of the main body portion 12; the movable body 16 provided with the lens; and the lens driving mechanism 17 that moves the movable body 16 in the optical axis direction with respect to the support body 15. The movable body 16 is opposed to the opening portion 13a provided on the end plate portion 13 of the holder 11 in the optical axis direction, and the edge of the opening portion 13a is opposed to the movable body 16 in the optical axis direction, and functions as a position restricting portion that restricts the movable body 16 from flying out of the opening portion 13a. Therefore, when an impact caused by a fall or the like is received, the movable body 16 can be prevented from flying out of the holder 11 and damaging the optical module 4.

[0101] In the present embodiment, the magnets (first magnet 61X, second magnet 61Y) of the shake correction drive mechanism 6 are fixed to the main body 12 of the holder 11. In the main body 12, the first side plate 31 in which the first magnet 61X is fixed and the second side plate 32 in which the second magnet 61Y is fixed are provided with a positioning portion 39 that positions the first magnet 61X and the second magnet 61Y in the optical axis direction. Thus, the positional accuracy of the first magnet 61X and the second magnet 61Y is high.

[0102] In the present embodiment, the fixed body 8 is provided with the base 21 that covers the movable body 5 from the -Z direction (the other side in the optical axis direction), and the end portion of the main body 12 in the -Z direction (the other side in the optical axis direction) is provided with a stopper portion 18 that extends further in the -Z direction than the end portion of the optical module 4 in the -Z direction. Thus, when an impact due to a fall or the like is received, the substrate 3 disposed at the bottom of the optical module 4 can be prevented from being damaged by colliding with the base 21 that covers the movable body 5 from the -Z direction.

[0103] In the present embodiment, the flexible printed substrate 9 is provided with the lead-out portion 91 that leads out to the outer circumferential side (+X direction) from the movable body 5, and the reinforcing plate 90 is fixed to the flexible printed substrate 9. The holder 11 is provided with a pair of clamping plates 58 that are opposed to the main body 12 from the outer circumferential side (+X direction) and are separated in the circumferential direction, and a pressing plate 59 that extends from the main body 12 to the outer circumferential side (+X direction) at a position separated from the lead-out portion 91 in the +Z direction (a position separated in the optical axis direction). The both end portions of the reinforcing plate 90 fixed to the flexible printed substrate 9 abut against the pair of clamping plates 58 from the inner circumferential side, and the reinforcing plate 90 is held in a posture standing up in the optical axis direction. Thus, since the flexible printed substrate 9 can be held together with the reinforcing plate 90 in a posture extending in the optical axis direction, the flexible printed substrate 9 can be led out to the outer circumferential side after being stood up to an appropriate position. In addition, by inserting the reinforcing plate 90 into the inner circumferential side of the clamping plate 58, the reinforcing plate 90 can be pressed against the clamping plate 58 by the restoring force of the flexible printed substrate 9. Thus, the work of standing up the flexible printed substrate 9 to an appropriate position and leading it out is easily performed.

[0104] The holder 11 of the present embodiment is provided with a cutout portion 57 that cuts the main body 12 in the +Z direction, and a pair of connection portions 60 that are bent from the end portion of the main body 12 in the -Z direction to the +X direction on both sides in the circumferential direction of the cutout portion 57, and the pair of clamping plates 58 extend from the front ends of the connection portions 60 to the +X direction. Thus, by folding back the extension portion extending from the edge of the main body in the optical axis direction to the optical axis direction, the clamping plate can be provided, and thus the holder 11 provided with the pair of clamping plates 58 is easily manufactured. In this case, a cut-up portion that extends to the +X direction from the edge of the cutout portion 57 in the +Z direction can be provided, and this cut-up portion can be used as the pressing plate 59.

[0105] In addition, in the present embodiment, since the end portion of the main body 12 in the -Z direction extends to the vicinity of the end portion of the optical module 4 in the -Z direction, the cutout portion 57 that becomes an exit for leading out the flexible printed board 9 is provided, but the cutout portion 57 can not be provided in the case where the height of the main body 12 in the optical axis direction is reduced.

[0106] In the present embodiment, the position of the pressing plate 59 in the optical axis direction coincides with the position of the swing center P of the movable body 5 in the optical axis direction. Therefore, the flexible printed board 9 can be led out from the height of the swing center P, so that when the planar portion 93 of the flexible printed board 9 is bent, it is bent on the virtual plane V that contains the swing center P. Therefore, since the spring constant of the flexible printed board 9 is small, the swing load of the movable body 5 is small. In addition, the position of the pressing plate 59 in the optical axis direction can be a position closer to the swing center P of the movable body 5 than the leading-out position of the flexible printed board 9 from the movable body 5. In this way, when the movable body 5 swings, the flexible printed board 9 is bent at a position close to the swing center P, so that the spring constant is small and the swing load of the movable body 5 is small.

[0107] In the present embodiment, the surfaces of the locking plate 58 and the reinforcing plate 90 are composed of a metal that is electrically conductive, the reinforcing plate 90 is soldered to the flexible printed board 9, and a ground wiring provided on the flexible printed board 9 is electrically connected to the movable body 5 via the reinforcing plate 90 and the locking plate 58. Therefore, by performing the work of routing the flexible printed board 9 while the ground of the flexible printed board 9 is electrically connected to the movable body 5, it is possible to reduce the assembly man-hours.

[0108] (Modified example of the holding structure of the flexible printed board)

[0109] Figure 9 is a perspective view showing a modified example 1 of the holding structure of the flexible printed board 9. In the above embodiment, as a structure for holding the reinforcing plate 90 in a posture extending in the Z-axis direction, a pair of locking plates 58 that are separated in the circumferential direction are disposed at positions opposite to the third side plate 33 in the X-axis direction by bending the extension portion extending from the third side plate 33 in the -Z direction to the +X direction and then folding back to the +Z direction, but other structures can be employed.

[0110] For example, as Figure 9As shown, a structure can be employed in which a cutout portion 57 is provided in the third side plate 33 that constitutes the side in the +X direction of the movable body 5, the cutout portion 57 being cut in the +Z direction, a pair of connecting portions 60A are provided that are bent in the +X direction (outer circumferential side) from edges on both sides in the circumferential direction of the third side plate 33, and a pair of the locking plates 58A are each extended in the Y axis direction from a front end of the connecting portion 60A toward the center in the Y axis direction (circumferential direction) of the third side plate 33. In this way, as in the above embodiment, the pair of locking plates 58A are arranged on both sides in the circumferential direction of the cutout portion 57, the pair of locking plates 58A being separated in the circumferential direction. Therefore, if the reinforcing plate 90 is inserted between the third side plate 33 and the locking plate 58A, the reinforcing plate 90 is pressed against the locking plate 58A by the restoring force of the flexible printed board 9. Therefore, the standing portion 92 of the flexible printed board 9 is held in a posture in which the standing portion 92 extends in the optical axis direction.

[0111] In Figure 9 a modification of the above embodiment, the pressing plate 59 is a cutout portion that extends in the +X direction from the edge in the +Z direction of the cutout portion 57. Alternatively, the pressing plate 59 can be provided at a position that is away from the lead-out position in the optical axis direction (in the above embodiment, the height of the swing center P) by other structures. For example, in the third side plate 33, the height in the Z axis direction of the cutout portion 57 can be lowered, and the pressing plate 59 can be provided by cutting the portion in the +Z direction of the cutout portion 57.

[0112] Figure 10 FIG. 8 is a perspective view showing a modification 2 of the holding structure of the flexible printed board 9. In Figure 10 the above embodiment, the pressing plate 59B is provided at the center of an extension portion 60B that extends in the +X direction (outer circumferential side) from the main body portion 12, and a pair of the locking plates 58B are bent and extended in the -Z direction from front ends of the extension portion 60B on both sides in the circumferential direction of the pressing plate 59. In Figure 10 the above embodiment, the cutout portion 57B is provided in the main body portion 12, the cutout portion 57B being wider than the above embodiment. The extension portion 60B, the pressing plate 59B, and the locking plate 58B are cutout portions that extend from the edge in the +Z direction of the cutout portion 57B. In this way, as in the above embodiment, the pair of locking plates 58 are arranged on both sides in the circumferential direction of the pressing plate 59B, the pair of locking plates 58 being separated in the circumferential direction. Therefore, if the end portion of the reinforcing plate 90 is inserted between the third side plate 33 and the locking plate 58B, the reinforcing plate 90 is pressed against the locking plate 58B.

[0113] Therefore, the standing portion 92 of the flexible printed board 9 is held in a posture in which the standing portion 92 extends in the optical axis direction.

[0114] In addition, in the above-described embodiment, the ground of the flexible printed substrate 9 is electrically connected to the holder 11 via the reinforcing plate 90, but the ground of the flexible printed substrate 9 can be connected to the movable body 5 or the fixed body 8 through other paths. In this case, the reinforcing plate 90 can not be made of metal. In addition, the surface of the holder 11 can not be subjected to the plating treatment for conductivity.

[0115] (Other Embodiments)

[0116] (1) In the above-described embodiment, the optical module 4 has the lens driving mechanism 17, and has the auto focus function capable of adjusting the lens position, but the present application can be applied to the optical unit having the shake correction function without the lens driving mechanism 17. In this case, since the magnetic interference with the lens driving mechanism 17 does not occur, the holder 11 can be made of a magnetic metal. For example, ferrite system stainless steel such as SUS430, SPCC (cold rolled steel sheet), or the like is used. If the holder 11 is made of a magnetic metal, the holder 11 functions as a magnetic yoke for the magnet of the shake correction driving mechanism 6, and thus a separate magnetic yoke is not needed. Therefore, the number of components can be reduced. In addition, in the case where another actuator is used instead of the magnetic driving mechanism as the lens driving mechanism 17, the holder 11 can also be made of a magnetic metal.

[0117] (2) In the above-described embodiment, the first magnet 61X and the second magnet 61Y of the shake correction driving mechanism 6 are fixed to the outer peripheral surface of the main body portion 12 of the holder 11, but the present application can also reverse the arrangement of the magnets and the coils of the shake correction driving mechanism 6. That is, the movable body 5 can also be a structure in which the first coil 62X and the second coil 62Y are fixed to the outer peripheral surface of the main body portion 12.

[0118] (3) The above-described embodiment is an embodiment in which the movable body 5 is swung in the pitch direction and the yaw direction to perform the shake correction around two axes, but the present application can also be applied to the optical unit having the shake correction function in which the movable body 5 is swung around three axes.

[0119] (4) Next, the optical unit with a shake correction function of the present application can have the following structure. The optical unit with a shake correction function 1 has: a movable body 5 having an optical module 4; a fixed body 8; a gimbal mechanism 7 that supports the movable body 5 so as to be able to swing about a first axis that intersects an optical axis L of the optical module 4 with respect to the fixed body 8, and supports the movable body 5 so as to be able to swing about a second axis that intersects the optical axis L and the first axis Rl; and a shake correction drive mechanism 6 that swings the movable body 5 about the first axis and the second axis. The gimbal mechanism 7 has: a gimbal frame 70; a first connection mechanism 71 that connects the movable body 5 and the gimbal frame 70 so as to be able to rotate about the first axis; and a second connection mechanism 72 that connects the fixed body 8 and the gimbal frame 70 so as to be able to rotate about the second axis. The movable body 5 has a metal-made holder 11 that doubles as an outer casing of the optical module 4, the optical module 4 has: a support body 15; a moving body 16 having a lens; and a lens drive mechanism 17 that moves the moving body 16 in the optical axis direction with respect to the support body 15. The holder 11 has: a main body portion 12 that surrounds the outer periphery of the support body 15; and an end plate portion 13 that extends from the end portion of the main body portion 12 in the +Z direction (one side in the optical axis direction) toward the inner periphery, and a magnet or a coil of the shake correction drive mechanism 6 is fixed to the outer peripheral surface of the main body portion 12. From the +Z direction (one side in the optical axis direction), the lens is positioned inside an opening portion 13a provided in the end plate portion 13, and the edge of the opening portion 13a opposes the moving body 16 in the optical axis direction, and restricts the moving body 16 from flying out of the opening portion 13a.

[0120] According to the above structure, the optical module 4 of the optical unit with a shake correction function has the lens drive mechanism 17 that moves the moving body 16 having a lens in the optical axis direction. The metal-made holder 11 that doubles as the outer casing of the optical module 4 is provided with the end plate portion 13 at the end portion in the +Z direction (one side in the optical axis direction), and the edge of the opening portion 13a provided in the end plate portion 13 functions as a position restriction portion that restricts the moving body 16 from flying out of the holder 11. Therefore, when an impact due to a fall or the like is received, the moving body 16 can be prevented from falling out of the outer casing and damaging the optical module 4. Further, since the portion in which the outer casing and the holder 11 are overlapped as in the past can be constituted with one member, the number of members can be reduced, and the outer shape of the movable body 5 can be reduced. Further, the metal-made holder 11 can reduce the plate thickness while ensuring strength, and therefore the outer shape of the movable body 5 can be further reduced. In this case, as the first connection mechanism 71, a structure different from the above embodiment can be adopted. The structure in which the diagonal portion of the metal-made holder 11 is largely notched to provide the first arm portion 35 that holds the first gimbal frame receiving member 77 can not be adopted. For example, a structure in which the gimbal frame receiving member having a ball is fixed to the outer peripheral surface of the holder 11 by welding can be adopted.

[0121] Explanation of symbols

[0122] 1: optical unit with shake correction function; 2: lens; 3: substrate; 4: optical module; 5: movable body; 6: shake correction drive mechanism; 6X: first shake correction drive mechanism; 6Y: second shake correction drive mechanism; 7: gimbal mechanism; 8: fixed body; 9, 10: flexible printed substrate; 11: holder; 12: main body portion; 13: end plate portion; 13a: opening portion; 14: lens barrel; 15: support body; 16: moving body; 17: lens drive mechanism; 18: stop portion; 20: housing; 21: base; 22: cover; 22a: opening portion; 23: frame portion; 24: wiring storage portion; 25: side wall; 26: cutout portion; 27, 28: coil arrangement hole; 31: first side plate; 32: second side plate; 33: third side plate; 34: fourth side plate; 35: first arm portion; 36: curved portion; 37: second arm portion; 38: curved portion; 39, 40: positioning portion; 41: first side surface; 42: second side surface; 43: third side surface; 44: fourth side surface; 45: fifth side surface; 46: sixth side surface; 47: seventh side surface; 48: eighth side surface; 49: claw portion; 50: locking hole; 51, 52: first cutout portion; 53, 54: second cutout portion; 57, 57B: cutout portion; 58, 58A, 58B: locking plate; 59, 59B: pressing plate; 60, 60A: connecting portion; 60B: extension portion; 61X: first magnet; 61Y: second magnet; 62X: first coil; 62Y: second coil; 70: gimbal frame; 71: first connection mechanism; 72: second connection mechanism; 73: opening portion; 74: gimbal frame main body portion; 75: first extension arrangement portion; 76: second extension arrangement portion; 77: first gimbal frame receiving member; 78: second gimbal frame receiving member; 79, 80: ball; 81: plate portion; 82: first locking portion; 83: second locking portion; 84: curved portion; 85: hole; 90: reinforcing plate; 91: lead-out portion; 92: standing portion; 93: flat portion; 94: connecting portion; 95: fixed portion; 96: in-plane curved portion; 171: magnet; 172: coil; 173: substrate; 174: magnetic yoke; 901: first layer; 902: second layer; 903: third layer; L: optical axis; P: center of oscillation of movable body; Rl: first axis; R2: second axis; V: imaginary plane.

Claims

1. An optical unit with jitter correction function, characterized in that, Possessing: a movable body having an optical module; a fixed body; a gimbal mechanism that supports the movable body so as to be able to oscillate about a first axis that intersects an optical axis of the optical module with respect to the fixed body, and supports the movable body so as to be able to oscillate about a second axis that intersects the optical axis and the first axis; and a drive mechanism for shake correction that causes the movable body to oscillate about the first axis and the second axis, the gimbal mechanism possesses: a gimbal frame; a first connection mechanism that connects the movable body and the gimbal frame so as to be able to rotate about the first axis; and a second connection mechanism that connects the fixed body and the gimbal frame so as to be able to rotate about the second axis, the movable body possesses a metal holder that doubles as an outer casing of the optical module, the holder possesses: a main body portion that encloses a peripheral side of the optical module; and an end plate portion that extends toward an inner peripheral side from an end portion of the main body portion on a side in the direction of the optical axis, a magnet or a coil of the drive mechanism for shake correction is fixed to an outer peripheral surface of the main body portion, a pair of first cutout portions is provided on the holder, the pair of first cutout portions being formed by cutting out diagonal positions on both sides in the direction of the first axis from the main body portion to the end plate portion in the direction of the optical axis, a gimbal frame receiving member is disposed at the diagonal positions in the direction of the first axis of the holder, the gimbal frame receiving member being held by a pair of first arm portions that extend from edges on both sides in the circumferential direction of the first cutout portions, the gimbal frame is supported so as to be able to rotate about the first axis by the gimbal frame receiving member, thereby constituting the first connection mechanism.

2. The optical unit with a shake correction function according to claim 1, wherein a pair of second cutout portions is provided on the holder, the pair of second cutout portions being formed by cutting out diagonal positions in the direction of the second axis from the main body portion to the end plate portion in the direction of the optical axis, distal ends of a pair of second arm portions that extend from edges on both sides in the circumferential direction of the second cutout portions engage with each other.

3. The optical unit with a shake correction function according to claim 1 or 2, wherein the gimbal frame receiving member possesses a spherical body, the gimbal frame possesses a gimbal frame main body portion and a pair of first extension providing portions that extend in the direction of the optical axis at diagonal positions in the direction of the first axis of the gimbal frame main body portion, a concave curved surface that is recessed in the direction of the first axis is provided at the first extension providing portion, and the spherical body is in point contact with the concave curved surface.

4. The optical unit with a shake correction function according to claim 3, wherein the gimbal frame receiving member possesses: a plate portion that fixes the spherical body; a pair of first clamping portions that extend toward both sides in the circumferential direction from an end portion on a side in the direction of the optical axis of the plate portion, and that are clamped to the pair of first arm portions from a side in the direction of the optical axis; and A pair of second locking portions extending from an end portion on the other side of the optical axis direction of the plate portion to both sides in the circumferential direction and locking the pair of first arm portions from the other side of the optical axis direction.

5. The optical unit with shake correction function according to claim 1, wherein A pair of curved portions extending toward the center in the circumferential direction of the first cutout portion are provided at the front ends of the pair of first arm portions, The gimbal frame receiving member abuts against the pair of curved portions from the inner circumferential side.

6. The optical unit with shake correction function according to claim 1, wherein The optical module includes a support body disposed inside the main body portion, a movable body including a lens, and a lens driving mechanism that moves the movable body with respect to the support body in the optical axis direction, The lens is located inside an opening portion provided in the end plate portion when viewed from one side of the optical axis direction, An edge of the opening portion opposes the movable body in the optical axis direction to restrict the movable body from flying out of the opening portion.

7. The optical unit with shake correction function according to claim 1, wherein The main body portion includes a positioning portion that positions the magnet in the optical axis direction.

8. The optical unit with shake correction function according to claim 1, wherein The fixed body includes a base that covers the movable body from the other side of the optical axis direction, An end portion of the main body portion on the other side of the optical axis direction includes a stop portion that extends further to the other side than an end portion of the optical module on the other side of the optical axis direction.

9. The optical unit with shake correction function according to claim 1, wherein A flexible printed board including a lead-out portion that leads out from the movable body to the outer circumferential side and a reinforcing plate that is fixed to the flexible printed board are included, The holder includes a pair of locking plates that oppose the main body portion from the outer circumferential side and are separated in the circumferential direction, and a pressing plate that extends from the main body portion to the outer circumferential side at a position separated from the lead-out portion in the optical axis direction, The reinforcing plate is held in an upright posture in the optical axis direction by two end portions that extend to both sides in the circumferential direction abutting against the pair of locking plates from the inner circumferential side, The flexible printed board extends along the reinforcing plate in the optical axis direction and then bends to the outer circumferential side along the pressing plate.

10. The optical unit with shake correction function according to claim 9, wherein The holder includes a cutout portion formed by cutting the main body portion in the optical axis direction, and a pair of connecting portions that bend from an end portion of the main body portion in the optical axis direction to the outer circumferential side on both sides in the circumferential direction of the cutout portion, The pair of locking plates respectively extend from front ends of the connecting portions in the optical axis direction.

11. The optical unit with shake correction function according to claim 9, wherein The main body portion has a side plate that constitutes a side surface of the movable body, and is provided with a cutout portion that cuts out the side plate in the optical axis direction, The holding member has a pair of connecting portions that curve outward from edges of the side plate on both sides in the circumferential direction, The pair of locking plates each extend in the circumferential direction from a front end of the connecting portion toward the center in the circumferential direction of the side plate.

12. The optical unit with shake correction function according to claim 9, wherein The pressing plate is provided at the center of an extension portion that extends outward from the main body portion, The pair of locking plates extend in the optical axis direction from front ends of the extension portion on both sides in the circumferential direction of the pressing plate.

13. The optical unit with shake correction function according to claim 9, wherein The position of the pressing plate in the optical axis direction is closer to the center of oscillation of the movable body than a lead-out position at which the flexible printed board is led out from the movable body.

14. The optical unit with shake correction function according to claim 9, wherein At least surfaces of the locking plate and the reinforcing plate are made of a metal that is electrically conductive, The reinforcing plate is soldered to the flexible printed board, A ground wiring provided on the flexible printed board is electrically connected to the movable body via the reinforcing plate and the locking plate.

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