JP2022040526A - Optical unit with shake correction function - Google Patents

Abstract

To facilitate securing assembly accuracy of an optical unit with a shake correction function including a posture return mechanism that returns a movable body to a reference posture.SOLUTION: An optical unit 1 with a shake correction function comprises: a rotation support mechanism 6 rotatably supporting a movable body 5 with an optical axis L as the center; a gimbal mechanism 7 rotatably supporting the rotation support mechanism 6 around a first axis R1 and around a second axis R2; a fixing body 8 supporting the movable body 5 through the rotation support mechanism 6 and the gimbal mechanism 7; and a posture return mechanism that returns the movable body 5 to an origin position of shake correction. The rotation support mechanism 6 includes a plate holder 63 rotatably supporting the movable body 5 around the optical axis L. The posture return mechanism includes an elastic support member 9 fixed to a cover bottom 20. The elastic support member 9 supports a load of the movable body 5 through the plate holder 63 and is evenly arranged in a circumferential direction with the center of gravity of the movable body 5 when viewed from an optical axis direction.SELECTED DRAWING: Figure 6

Description

The present invention relates to an optical unit with a shake correction function that swings a camera module to correct shake.

In the optical unit mounted on the mobile terminal or mobile body, in order to suppress the disturbance of the captured image when the mobile terminal or mobile body is moved, the movable body on which the camera module is mounted is rotated around the optical axis and light. Some are rotated around the first axis orthogonal to the axis and around the second axis orthogonal to the optical axis and the first axis. Patent Document 1 describes this kind of optical unit with a shake correction function.

The optical unit with a shake correction function of Patent Document 1 includes a movable body including a camera module (optical module), a fixed body, a swing support mechanism that swingably supports the movable body with respect to the fixed body, and a fixed body. It is equipped with a swinging magnetic drive mechanism that swings the movable body. The swing magnetic drive mechanism includes a coil arranged on the movable body and a magnet arranged on the fixed body. A magnetic member for returning to the posture is arranged on the movable body. The attitude return magnetic member constitutes a magnetic spring that returns the movable body to the reference posture when the energization of the coil is stopped by the magnetic attraction force acting between the magnet of the swing magnetic drive mechanism.

Patent Document 2 discloses an optical unit with a runout correction function that returns a movable body to a reference posture by an elastic force of a plate-shaped spring applied between a fixed body and a movable body. The plate-shaped spring has a rectangular frame-shaped fixed body side connecting portion, an annular movable body side connecting portion arranged on the inner peripheral side of the fixed body side connecting portion, and a fixed body side connecting portion and a movable body side connecting portion while being folded back in the circumferential direction. It is provided with a leaf spring portion that connects the portions.

JP-A-2019-020502 JP-A-2015-06451

When a magnetic spring is used as a posture return mechanism for returning the movable body to the reference posture, it is necessary to accurately arrange the magnetic member and the magnet so that the movable body stops at the reference posture. Therefore, it is necessary to adjust the positions of the magnetic member and the magnet while checking the posture of the movable body at the time of assembly, and a configuration and a jig capable of adjusting the positions are required. For example, in Patent Document 1, the position is adjusted by moving the magnet in the optical axis direction using a jig while measuring the optical axis deviation of the optical module.

Further, when a plate-shaped spring is used as the posture return mechanism as in Patent Document 2, it is necessary to improve the assembly accuracy in order to assemble the movable body so as to stop in the reference posture. In addition, since the influence of component accuracy is large, it is necessary to improve component accuracy.

In view of these points, an object of the present invention is to facilitate ensuring the assembly accuracy of an optical unit with a runout correction function provided with a posture return mechanism for returning a movable body to a reference posture.

In order to solve the above problems, the optical unit with a shake correction function of the present invention includes a movable body including a camera module and a rotation support mechanism that rotatably supports the movable body around the optical axis of the camera module. , The oscillating support mechanism rotatably supports around the first axis intersecting the optical axis and rotatably around the second axis intersecting the optical axis and intersecting the first axis. A posture return mechanism that returns the movable body to a reference posture in which the mechanism, the fixed body that supports the movable body via the rotation support mechanism and the swing support mechanism, and the optical axis and the preset axis line coincide with each other. The rotation support mechanism includes a rotation support member that rotatably supports the movable body about the optical axis, and the fixed body faces the rotation support member in the optical axis direction. A cover member is provided, and the posture return mechanism includes a plurality of elastic support members arranged between the cover member and the rotation support member and receiving a load of the movable body via the rotation support member, and the plurality of elastic support members. The elastic support member of the above is characterized in that it is evenly arranged in the circumferential direction about the center of gravity of the movable body when viewed from the optical axis direction.

According to the present invention, an elastic support member that receives the load of the movable body via the rotation support member is arranged between the fixed body and the rotation support mechanism. Since the elastic support members are evenly arranged in the circumferential direction around the center of gravity of the movable body, the movable body can be returned to the reference posture by the elastic return force of the elastic support member when the movable body is tilted. In this way, the posture return mechanism that receives the load of the movable body with the elastic support member uses the movable body as the reference posture rather than the posture return mechanism that uses a conventional magnetic spring or the posture return mechanism that suspends the movable body with a plate-shaped spring. The assembly accuracy required for accurate positioning can be easily secured.

In the present invention, the elastic support member is preferably made of an elastic resin. Molded products made of elastic resin are easy to assemble and secure assembly accuracy. Further, since the elastic resin can be compressed and deformed in all directions, it is possible to return to the posture when the posture of the movable body is changed in all directions.

For example, the elastic support member is preferably made of low-hardness rubber having a rubber hardness of 10 or less. If low hardness rubber is used, an appropriate elastic recovery force can be obtained. Therefore, it is possible to suppress the required drive current when correcting the runout of the movable body. Further, since the spring constant at the time of deformation of the low hardness rubber is substantially constant up to a compression amount of about 50%, it is easy to control the drive current when performing runout correction.

In the present invention, the elastic support member is preferably circular when viewed from the optical axis direction. For example, the elastic support member is preferably cylindrical. If such a shape is adopted, it is not necessary to adjust the orientation of the elastic support member at the time of assembly, so that assembly is easy.

In the present invention, the elastic support member is fixed to one of the cover member and the rotation support member, and the tip portion protruding toward the other of the cover member and the rotation support member is spherical. Is preferable. If such a shape is adopted, the elastic support member is uniformly compressed and deformed with respect to the omnidirectional posture change of the movable body. Therefore, it is possible to return to the posture in response to the posture change in all directions. In addition, it is easy to control the drive current when performing runout correction.

In the present invention, it is preferable that the elastic support member is fixed to the cover member. By doing so, it is possible to assemble an optical unit with a runout correction function by stacking a movable body in which a rotation support mechanism is assembled on a cover member to which an elastic support member is fixed in advance. Therefore, it is easy to assemble the optical unit with the runout correction function.

In the present invention, it is preferable that the elastic support members are arranged at two symmetrical positions on the first axis with respect to the center of gravity. Alternatively, it is preferable that the elastic support members are arranged at two locations symmetrical with respect to the center of gravity on the second axis. By doing so, the movable body can be returned to the origin position of the runout correction.

According to the present invention, an elastic support member that receives the load of the movable body via the rotation support member is arranged between the fixed body and the rotation support mechanism. Since the elastic support members are evenly arranged in the circumferential direction around the center of gravity of the movable body, the movable body can be returned to the reference posture by the elastic return force of the elastic support member when the movable body is tilted. In this way, the posture return mechanism that receives the load of the movable body with the elastic support member uses the movable body as the reference posture rather than the posture return mechanism that uses a conventional magnetic spring or the posture return mechanism that suspends the movable body with a plate-shaped spring. The assembly accuracy required for accurate positioning can be easily secured.

It is a perspective view of the optical unit with a correction function to which this invention is applied. FIG. 3 is an exploded perspective view of the optical unit with a shake correction function of FIG. 1 as viewed from one side in the optical axis direction. FIG. 3 is an exploded perspective view of the optical unit with a shake correction function of FIG. 1 as viewed from the other side in the optical axis direction. It is sectional drawing which cut the optical unit with a runout correction function in an XZ plane. It is sectional drawing which cut the optical unit with a runout correction function in an XY plane. It is sectional drawing which cut the optical unit with a runout correction function in the plane including the 1st axis and the Z axis. It is sectional drawing which cut the optical unit with a runout correction function in the plane including the 2nd axis and the Z axis. It is a perspective view of a gimbal spring. It is a top view which shows the main part of the optical unit with a runout correction function. It is sectional drawing which shows the sectional view of the elastic support member of a modification, and the state which the elastic support member of a modification is compressed between a cover bottom and a plate holder.

Hereinafter, embodiments of an optical unit with a shake correction function to which the present invention is applied will be described with reference to the drawings.

(overall structure)
FIG. 1 is a perspective view of an optical unit 1 with a shake correction function to which the present invention is applied. FIG. 2 is an exploded perspective view of the optical unit 1 with a shake correction function of FIG. 1 as viewed from one side (+ Z direction) in the optical axis direction. FIG. 3 is an exploded perspective view of the optical unit 1 with a shake correction function of FIG. 1 as viewed from the other side (−Z direction) in the optical axis direction. FIG. 4 is a cross-sectional view of the optical unit 1 with a runout correction function cut along an XZ plane. FIG. 5 is a cross-sectional view of the optical unit 1 with a runout correction function cut along an XY plane. FIG. 6 is a cross-sectional view of the optical unit 1 with a runout correction function cut along a plane including the first axis R1 and the Z axis. FIG. 7 is a cross-sectional view of the optical unit 1 with a runout correction function cut along a plane including the second axis R2 and the Z axis. FIG. 8 is a perspective view of the gimbal spring 70. FIG. 9 is a plan view showing a main part of the optical unit 1 with a runout correction function.

The optical unit 1 with a shake correction function has a camera module 4 including a lens 2 and an image pickup element 3. The optical unit 1 with a shake correction function is used, for example, in an optical device such as a mobile phone with a camera and a drive recorder, and an optical device such as an action camera and a wearable camera mounted on a moving body such as a helmet, a bicycle, and a radiocon helicopter. .. In such an optical device, if the optical device shakes during shooting, the captured image is distorted. The optical unit 1 with a shake correction function corrects the tilt of the camera module 4 based on the acceleration, the angular velocity, the amount of shake, etc. detected by a detection means such as a gyroscope in order to prevent the captured image from tilting.

The optical unit 1 with a shake correction function rotates the camera module 4 around the optical axis L, around the first axis R1 orthogonal to the optical axis L, and around the optical axis L and the second axis R2 orthogonal to the first axis R1. Let it perform runout correction. Therefore, the optical unit 1 with a runout correction function performs rolling correction, pitching correction, and yawing correction.

In the following description, the three axes orthogonal to each other will be referred to as an X-axis, a Y-axis, and a Z-axis. The Z axis coincides with the optical axis L of the lens 2. The X-axis is orthogonal to the optical axis L and passes through the intersection of the first axis R1 and the second axis R2. Further, the X-axis intersects the first axis R1 and the second axis R2 at an angle of 45 °. The Y-axis is orthogonal to the optical axes L and X and passes through the intersection of the first axis R1 and the second axis R2. Further, the Y axis intersects the first axis R1 and the second axis R2 at an angle of 45 °. Therefore, when the plane including the X-axis and the Y-axis is the 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 tilted 45 degrees with respect to the X axis and the Y axis around the Z axis.

Further, in the following description, the directions along the X-axis, Y-axis, and Z-axis are defined as the X-axis direction, the Y-axis direction, and the Z-axis direction. One side in the X-axis direction is the −X direction, and the other side is the + X direction. Further, one side in the Y-axis direction is the −Y direction, the other side is the + Y direction, one side in the Z-axis direction is the −Z direction, and the other side is the + Z direction. The −Z direction is the opposite side of the camera module 4 and is the other side in the optical axis direction. The + Z direction is the subject side of the camera module 4, and is one side in the optical axis direction. Further, the direction along the first axis R1 is defined as the first axis R1 direction, and the direction along the second axis R2 is defined as the second axis R2 direction.

As shown in FIGS. 1 and 2, the optical unit 1 with a shake correction function includes a movable body 5 including a camera module 4 and a rotation support mechanism 6 that rotatably supports the movable body 5 around the optical axis L. Therefore, the movable body 5 can rotate in the roll direction ROLL around the optical axis L. Further, the optical unit 1 with a runout correction function rotatably supports the rotation support mechanism 6 around the first axis R1, and also supports the gimbal mechanism 7 rotatably around the second axis R2, the gimbal mechanism 7, and the gimbal mechanism 7. It has a fixed body 8 that supports the movable body 5 via a rotation support mechanism 6.

Therefore, the movable body 5 is swingably supported around the first axis R1 and swingably supported around the second axis R2 via the gimbal mechanism 7. Here, the movable body 5 can rotate in the yaw direction YAW around the X axis and the pitch direction PITCH around the Y axis by combining the rotation around the first axis R1 and the rotation around the second axis R2. .. Therefore, the gimbal mechanism 7 is a swing support mechanism that swingably supports the movable body 5 around the X axis and the Y axis via the rotation support mechanism 6.

The optical unit 1 with a runout correction function includes a flexible printed substrate 14 connected to the movable body 5. As shown in FIGS. 4 and 5, the flexible printed substrate 14 is pulled out from the movable body 5 in the + X direction. The flexible printed circuit board 14 is pulled out to the outside of the fixed body 8 and is connected to the substrate of an optical device or the like on which the optical unit 1 with a runout correction function is mounted via a connector (not shown).

Further, as shown in FIG. 5, the optical unit 1 with a shake correction function has a shake correction magnetic drive mechanism 10 that rotates the movable body 5 around the first axis R1 and the second axis R2. The runout correction magnetic drive mechanism 10 generates a first runout correction magnetic drive mechanism 11 that generates a driving force around the X axis with respect to the movable body 5, and a driving force around the Y axis with respect to the movable body 5. The second runout correction magnetic drive mechanism 12 is provided. As shown in FIGS. 2, 3, and 5, the first runout correction magnetic drive mechanism 11 includes a first magnet 111 and a first coil 112 arranged in the −Y direction of the movable body 5. The second runout correction magnetic drive mechanism 12 includes a second magnet 121 and a second coil 122 arranged in the −X direction of the movable body 5.

Further, as shown in FIGS. 2, 3, and 5, the optical unit 1 with a runout correction function has a rolling correction magnetic drive mechanism 13 that rotates the movable body 5 around the optical axis L. The rolling correction magnetic drive mechanism 13 includes a rolling correction magnet 131 and a rolling correction coil 132 arranged in the + Y direction of the movable body 5. The optical unit 1 with a runout correction function includes a magnetic drive mechanism 10 for runout correction and a flexible printed substrate 15 for supplying power to the magnetic drive mechanism 13 for rolling correction. The flexible printed substrate 15 is attached to the fixed body 8.

(Movable body)
As shown in FIGS. 2 to 5, the movable body 5 includes a camera module 4 and a metal holder 16 that surrounds the camera module 4. The camera module 4 includes an octagonal camera module main body 4a when viewed from the Z-axis direction, and a cylindrical lens barrel portion 4b protruding from the camera module main body 4a in the + Z direction. The lens 2 (see FIG. 4) is held in the lens barrel portion 4b. The holder 16 includes a holder bottom portion 161 that supports the camera module 4 from the −Z direction, and a holder frame portion 162 that rises from the outer peripheral edge of the holder bottom portion 161 in the + Z direction. The holder frame portion 162 includes a notch portion 160 that opens in the + X direction. The flexible printed substrate 14 is connected to an image pickup element 3 arranged inside the camera module 4, and is pulled out in the + X direction of the movable body 5 through the notch 160.

The holder 16 is made of a magnetic material. As shown in FIGS. 3 and 5, the first magnet 111 is fixed to the side surface of the holder frame portion 162 in the −Y direction. A second magnet 121 is fixed to the side surface of the holder frame portion 162 in the −X direction. The first magnet 111 and the second magnet 121 are polarized and magnetized in the Z-axis direction. Further, a rolling correction magnet 131 is fixed to the side surface of the holder frame portion 162 in the + Y direction. The rolling correction magnet 131 is polarized and magnetized in the circumferential direction.

(Fixed body)
As shown in FIGS. 1 to 5, the fixed body 8 is fixed to the cover bottom 20 that covers the movable body 5 and the flexible printed substrate 14 from the −Z direction, and is fixed to the cover bottom 20 from the + Z direction in the diagonal direction of the movable body 5. A frame case 30 surrounding the frame case 30 and a stopper case 40 surrounding the outer peripheral side of the frame case 30 and the movable body 5 are provided. The cover bottom 20, the frame case 30, and the stopper case 40 are made of metal and are made of a non-magnetic material. The cover bottom 20 is, for example, a sheet metal member having a plate thickness of 0.15 mm, and is manufactured by press working. The frame case 30 is a sheet metal member having a thicker plate thickness than the cover bottom 20 (for example, a plate thickness of 0.30 mm), and is manufactured by press working. The stopper case 40 has the same plate thickness as the cover bottom 20, and is manufactured by press drawing. As shown in FIGS. 1 and 4, a part of the movable body 5 and the gimbal mechanism 7 protrudes from the stopper case 40 in the + Z direction.

Further, the fixed body 8 includes an FPC cover 50 that surrounds the outer peripheral side of the flexible printed substrate 14 that is pulled out from the movable body 5 in the + X direction. The FPC cover 50 is made of resin and is fixed to the cover bottom 20 from the + Z direction. The cover bottom 20 includes two first elastic engaging portions 21 that rise in the + Z direction from the edge in the + X direction, and the first elastic engaging portions 21 are provided on the side surface of the FPC cover 50 in the + X direction. It is locked to the first locking portion 22. The FPC cover 50 includes a notch 51 having a notched end in the −Z direction on the side surface in the + X direction. The flexible printed substrate 14 is pulled out from the gap between the notch 51 and the cover bottom 20 to the outside of the fixed body 8.

The end portion of the FPC cover 50 in the −X direction is provided with a hook portion 52 that fits into the rectangular frame portion 31 of the frame case 30 described later (see FIGS. 3 and 5). The hooking portion 52 is + on the rectangular frame portion 31
By fitting from the Z direction, the end portion of the FPC cover 50 in the −X direction is locked to the frame case 30. Further, locking portions 53 are formed on the side surface in the −Y direction and the side surface in the + Y direction at the end portion of the FPC cover 50 in the −X direction, respectively. The + X direction end of the stopper case 40 includes an engaging hole 49 that engages with the locking portion 53. Further, the side surface of the stopper case 40 in the −X direction is provided with engagement holes 27 that engage with two third elastic engaging portions 26 that rise in the + Z direction from the edge of the cover bottom 20 in the −X direction (FIG. 3).

As shown in FIG. 5, the flexible printed substrate 15 is routed in the circumferential direction along the inner surface of the stopper case 40. As shown in FIGS. 2, 3, and 5, the flexible printed substrate 15 has a first coil fixing portion 151 extending in the X-axis direction along the −Y direction side surface of the stopper case 40, and the stopper case 40 in the −X direction. A second coil fixing portion 152 extending in the Y-axis direction along the side surface of the stopper case 40 and a third coil fixing portion 153 extending in the X-axis direction along the + Y-direction side surface of the stopper case 40 are provided. The first coil fixing portion 151, the second coil fixing portion 152, and the third coil fixing portion 153 are fixed to the inner peripheral surface of the stopper case 40.

The first coil 112 of the first runout correction magnetic drive mechanism 11 is fixed to the first coil fixing portion 151, and the second coil 122 of the second runout correction magnetic drive mechanism 12 is fixed to the second coil fixing portion 152. Is fixed. Further, the rolling correction coil 132 is fixed to the third coil fixing portion 153. The first coil 112, the second coil 122, and the rolling correction coil 132 are electrically connected to the flexible printed substrate 15. Further, the first coil 112, the second coil 122, and the rolling correction coil 132 are fixed to the stopper case 40 via the flexible printed substrate 15.

As shown in FIGS. 2, 3, and 5, the stopper case 40 includes a body portion 40A that surrounds the outer peripheral side of the movable body 5. The body portion 40A includes a first case wall 41 extending in the X-axis direction of the movable body 5 in the −Y direction, a second case wall 42 extending in the Y-axis direction of the movable body 5 in the −X direction, and + Y of the movable body 5. A third case wall 43 extending in the X-axis direction is provided. Further, the stopper case 40 includes an end plate portion 44 projecting from one end of the body portion 40A in the optical axis direction (+ Z direction) toward the inner peripheral side. The end plate portion 44 has a first case protrusion 45A protruding inward from a diagonal position in the first axis R1 direction and a second case protrusion 45B protruding inward from a diagonal position in the second axis R2 direction. To prepare for. Further, the end plate portion 44 is provided with case positioning holes 440 for positioning with the frame case 30 at two locations on the first axis R1 and two locations on the second axis R2, respectively. ..

The stopper case 40 has a hook 46 (see FIGS. 2, 3, and 4) for locking the edge of the flexible printed board 15 in the −Z direction, and a concave groove 47 for locking the edge of the flexible printed board 15 in the + Z direction. (See FIG. 3). One hook 46 is formed at the center of the first case wall 41, the second case wall 42, and the third case wall 43 in the circumferential direction. The concave groove 47 is formed at two locations on the edge in the −Y direction, the edge in the −X direction, and the edge in the + Y direction of the end plate portion 44, respectively. In the first coil fixing portion 151, the second coil fixing portion 152, and the third coil fixing portion 153, the edge in the −Z direction is locked to the hook 46, and the edge in the + Z direction is locked to the concave groove 47, respectively. It is positioned and fixed to the stopper case 40 with an adhesive.

The first case wall 41, the second case wall 42, and the third case wall 43 each include a magnetic member placement groove 48 extending in the Z-axis direction at the center in the circumferential direction. The magnetic member arrangement groove 48 is recessed toward the inner peripheral side. As shown in FIG. 5, the first magnetic member 113 is arranged in the magnetic member arrangement groove 48 provided in the first case wall 41. The first magnetic member 113 constitutes a magnetic spring for positioning the movable body 5 at the origin position in the runout correction around the X axis. Further, the second magnetic member 123 is arranged in the magnetic member arrangement groove 48 provided in the second case wall 42. Second
The magnetic member 123 constitutes a magnetic spring for positioning the movable body 5 at the origin position in the runout correction around the Y axis.

The hook 46 is a cut-bent portion in which the bottom portion of the magnetic member placement groove 48 is cut up to the inner peripheral side and bent in the optical axis direction. Therefore, in the bottom portion of the magnetic member arranging groove 48, the portion where the hook 46 is cut up is the opening portion 46a. The opening 46a is used as an adhesive application hole for pouring the fixing adhesive between the flexible printed substrate 15 and the stopper case 40 after positioning the flexible printed substrate 15 in the stopper case 40.

As shown in FIGS. 2 and 3, the frame case 30 has a rectangular frame portion 31 that abuts on the cover bottom 20 from the + Z direction and a pair that rises in the + Z direction from a diagonal position of the rectangular frame portion 31 in the first axis R1 direction. The first vertical frame portion 32 of the above and a pair of second vertical frame portions 33 rising in the + Z direction from the diagonal position of the rectangular frame portion 31 in the second axis R2 direction are provided. The first vertical frame portion 32 and the second vertical frame portion 33 have four second elastic engagements provided at diagonal positions in the first axis R1 direction and diagonal positions in the second axis R2 direction of the cover bottom 20. A second locking portion 24 for locking the joint portion 23 is provided. By locking the second elastic engaging portion 23 to the second locking portion 24, the frame case 30 is fixed to the cover bottom 20.

As shown in FIGS. 2 and 3, the pair of first vertical frame portions 32 each have a plate portion 34 extending in the + Z direction and two protrusions 35 protruding from both side edges in the width direction of the plate portion 34, respectively. To prepare for. Further, the pair of second vertical frame portions 33 includes a plate portion 36 extending in the + Z direction and a pair of arm portions 37 protruding from substantially the center of the edges on both sides of the plate portion 36 in the Z-axis direction. Each arm portion 37 is provided with four protrusions 38 protruding from both side edges in the width direction of the plate portion 36 in the + Z direction and the −Z direction. The protrusions 35 and 38 extend in the Y-axis direction or the X-axis direction along the flexible printed substrate 15 fixed to the inner surface of the stopper case 40.

As shown in FIGS. 1 and 6, the tip of each of the pair of first vertical frame portions 32 in the + Z direction of the plate portion 34 is inserted into the case positioning hole 440 of the stopper case 40. Further, as shown in FIGS. 1 and 7, the tip of each of the pair of second vertical frame portions 33 in the + Z direction of the plate portion 36 is inserted into the case positioning hole 440 of the stopper case 40. In this embodiment, the tips of the plate portions 34 and 36 are fixed to the stopper case 40 by welding.

The pair of second vertical frame portions 33 includes a second shaft side cylinder portion 39 projecting from the plate portion 36 in a direction facing the second axis R2 direction. The pair of arm portions 37 are arranged on both sides of the second shaft side tubular portion 39 in the circumferential direction. A cylindrical second shaft side shaft 720 is held in the second shaft side cylinder portion 39. The second shaft side shaft 720 has a hemispherical tip portion that protrudes inward in the radial direction from the second shaft side cylinder portion 39. The second shaft side shaft 720 constitutes the second connection mechanism 72 of the gimbal mechanism 7, as will be described later.

(Rotation support mechanism)
As shown in FIGS. 4, 6 and 7, the rotation support mechanism 6 includes a shaft portion 61 projecting from the center of the holder bottom portion 161 in the −Z direction, a bearing 62 surrounding the outer peripheral side of the shaft portion 61, and a bearing 62. A plate holder 63 connected to the shaft portion 61 via the plate holder 63 and an annular suction magnet 64 fixed to the plate holder 63 are provided. The adsorption magnet 64 may be unipolar magnetized or may be multipolar magnetized in which S poles and N poles are alternately arranged in the circumferential direction. The shaft portion 61 is formed on the holder 16 by burring. The bearing 62 includes an inner ring 621 fixed to a step portion 610 provided on the outer peripheral surface of the shaft portion 61, an outer ring 622 surrounding the outer peripheral side of the inner ring 621, and a sphere 623 that rolls between the inner ring 621 and the outer ring 622. , Equipped with an annular retainer 624 that rotatably holds the sphere 623.

The plate holder 63 includes a plate holder cylinder portion 65 in which the outer ring 622 is fixed to the inner peripheral surface, a plate holder annular portion 66 extending from the + Z direction end of the plate holder cylinder portion 65 to the outer peripheral side, and a plate holder annular portion 66. A pair of plate holder extending portions 67 protruding from the first axis in the R1 direction and bent in the + Z direction are provided. The suction magnet 64 is fixed to the plate holder annular portion 66 and attracts the holder bottom portion 161 which is a magnetic member. A constant gap is provided between the plate holder annular portion 66 and the holder bottom portion 161, and a constant gap is maintained between the suction magnet 64 and the holder bottom portion 161.

As shown in FIG. 6, the tip portions of the pair of plate holder extending portions 67 extend on the outer peripheral side of the movable body 5 in the Z-axis direction, respectively. The tip end portion of each plate holder extending portion 67 includes a first axis side concave curved surface 68 that is recessed on the first axis R1 toward the inner peripheral side. The first axis side concave curved surface 68 constitutes the first connection mechanism 71 of the gimbal mechanism 7, as will be described later.

(Elastic support member)
As shown in FIG. 2, the cover bottom 20 includes a circular hole 25 centered on the optical axis L. Cylindrical elastic support members 9 are arranged at two locations facing the first axis R1 direction with the circular hole 25 interposed therebetween. The elastic support member 9 is made of low-hardness rubber having a rubber hardness of 10 or less. For example, the elastic support member 9 is made of silicon-based rubber having a rubber hardness of 1 to 3. In this embodiment, the elastic support member 9 receives the load of the movable body 5 and the rotation support mechanism 6 via the plate holder 63 of the rotation support mechanism 6 arranged at the bottom of the movable body 5 (FIG. 6). reference).

The plate holder 63 is a rotation support member that rotatably supports the movable body 5 around the optical axis via the bearing 62. The cover bottom 20 covers the rotation support mechanism 6 from the −Z direction and faces the plate holder 63 in the optical axis direction. The elastic support member 9 is arranged between the plate holder 63 and the cover bottom 20. The elastic support member 9 is compressed between the plate holder 63 and the cover bottom 20 by the load of the movable body 5 and the rotation support mechanism 6. In this embodiment, when the optical axis L and the Z axis of the camera module 4 coincide with each other, the elastic support member 9 is compressed in the Z axis direction with a compression ratio of about 10% between the plate holder 63 and the cover bottom 20. Has been done.

When the movable body 5 swings with respect to the fixed body 8, the plate holder 63 tilts with respect to the cover bottom 20 together with the movable body 5. At this time, the elastic support member 9 located on the tilted side of the movable body 5 is compressed. The elastic return force of the compressed elastic support member 9 urges the movable body 5 in a direction in which the inclination with respect to the fixed body 8 decreases. On the other hand, the elastic support member 9 located on the side opposite to the tilted side of the movable body 5 returns to the shape before compression because the plate holder 63 is separated from the cover bottom 20. In this embodiment, the elastic support member 9 is fixed to the cover bottom 20, but not to the plate holder 63. Therefore, when the movable body 5 is tilted until the distance between the plate holder 63 and the cover bottom 20 becomes larger than the dimension before compression of the elastic support member 9, the plate holder 63 is separated from the elastic support member 9.

The elastic support members 9 are evenly arranged in the circumferential direction around the center of gravity of the movable body 5 when viewed from the optical axis direction. In this embodiment, the elastic support members 9 are arranged at two symmetrical positions on the first axis R1 with the optical axis L interposed therebetween. Since the center of gravity of the movable body 5 is located on the optical axis L, the elastic support members 9 are arranged at two symmetrical positions on the first axis R1 with respect to the center of gravity of the movable body. The plate holder 63 includes a plate holder extending portion 67 extending from the plate holder annular portion 66 to both sides in the first axis R1 direction, and the elastic support member 9 is attached to the plate holder extending portion 67 when viewed from the optical axis direction. Overlap.

The optical unit 1 with a shake correction function includes a posture return mechanism for returning the movable body 5 to the origin position of the shake correction. At the origin position of the runout correction, the movable body 5 is the optical axis L of the camera module 4.
And the Z axis (preset axis) coincide with each other. In this embodiment, the posture return mechanism includes a first magnetic member 113 and a first magnet 111, two sets of magnetic springs composed of a second magnetic member 123 and a second magnet 121, and an elastic support member 9. .. The magnetic spring is a movable body 5 due to a magnetic attraction force acting between the first magnetic member 113 and the first magnet 111 and a magnetic attraction force acting between the second magnetic member 123 and the second magnet 121. Is urged toward the origin position of runout correction. Further, when the movable body 5 is tilted, the elastic support member 9 located on the tilted side is compressed. Therefore, the elastic support member 9 moves the movable body 5 to the origin position of the vibration correction by the elastic recovery force returning from the compressed state. Encourage towards. Therefore, in a state where the first coil 112 and the second coil 122 of the runout correction magnetic drive mechanism 10 are turned off, the movable body 5 is held at the origin position by the magnetic spring and the elastic support member 9.

As described above, in the present embodiment, as the posture return mechanism, in addition to the magnetic spring, the elastic support member 9 that receives the load of the movable body 5 and the rotation support mechanism 6 is provided, so that the movable body 5 is set to the origin position of the vibration correction. It is possible to improve the position accuracy when returning to. Further, since the low-hardness rubber is a vibration-proof material, it is possible to improve the impact resistance when an impact due to dropping or the like is applied.

(Gimbal mechanism)
As shown in FIGS. 2 to 5, the gimbal mechanism 7 includes a gimbal spring 70, a first connection mechanism 71, and a second connection mechanism 72. The first connection mechanism 71 rotatably connects the gimbal spring 70 and the plate holder 63 around the first axis R1. The second connection mechanism 72 rotatably connects the gimbal spring 70 and the frame case 30 around the second axis R2. When the gimbal mechanism 7 is configured, the movable body 5 is supported by the fixed body 8 via the gimbal mechanism 7 and the rotation support mechanism 6. As a result, the movable body 5 can swing around the intersection where the optical axis L, the first axis R1, and the second axis R2 intersect.

The gimbal spring 70 is made of a metal leaf spring. As shown in FIGS. 2, 3, 8, and 9, the gimbal spring 70 is formed by the gimbal spring frame portion 73 surrounding the outer peripheral side of the holder 16 and the diagonal position of the gimbal spring frame portion 73 in the first axis R1 direction. A pair of first gimbal spring extension portions 74 extending in the direction and a pair of second gimbal spring extension portions 75 extending in the −Z direction from diagonal positions of the gimbal spring frame portion 73 in the second axis R2 direction are provided.

As shown in FIG. 8, the gimbal spring frame portion 73 has a tapered portion 731 in which a diagonal portion in the direction of the first axis R1 and a diagonal portion in the direction of the second axis R2 are bent in the −Z direction, respectively. Be prepared. Each tapered portion 731 includes a groove portion 732 having a central portion in the circumferential direction cut out toward the outer peripheral side. A first case protrusion 45A or a second case protrusion 45B provided on the stopper case 40 is arranged in each groove portion 732 (see FIG. 9).

The groove portion 732 of the gimbal spring 70 and the first case protrusion 45A and the second case protrusion 45B of the stopper case 40 form a stopper mechanism that regulates the swing range of the movable body 5. That is, when the first case protrusion 45A hits the edge of the groove portion 732 in the −Z direction, the swing range around the second axis R2 of the movable body 5 is restricted, and the second case protrusion 45B is in the −Z direction of the groove portion 732. By hitting the edge, the swing range around the first axis R1 of the movable body 5 is restricted.

The gimbal spring frame portion 73 includes a gimbal spring relief portion 76 that avoids interference with the flexible printed substrate 14 extending from the movable body 5 in the + X direction. As shown in FIGS. 1 and 8, the gimbal spring relief portion 76 is a pair of protruding portions 761 extending in the + X direction from two tapered portions 731 separated in the Y-axis direction, and the protruding portions 761 in the + X direction. It includes a pair of bent portions 762 that bend in the −Z direction from the tip and extend in the Z-axis direction, and a straight portion 763 that is connected to the tip of the pair of bent portions 762 in the −Z direction and extends linearly in the Y-axis direction. As shown in FIG. 1, the flexible printed substrate 14 pulled out from the bottom of the movable body 5 passes between the pair of bent portions 762.

As shown in FIGS. 5 and 6, the tip end portions of the pair of first gimbal spring extension portions 74 include a first shaft side cylinder portion 77 projecting on the first shaft R1 toward the outer peripheral side. A cylindrical first shaft side shaft 710 is held in the first shaft side cylinder portion 77. The first shaft side shaft 710 has a hemispherical tip portion that protrudes inward in the radial direction from the first shaft side cylinder portion 77. The first connection mechanism 71 is configured such that the hemisphere provided at the tip of the shaft 710 on the first shaft side makes point contact with the concave curved surface 68 on the first shaft side provided at the tip of the extending portion 67 of the plate holder. Will be done. As a result, the rotation support mechanism 6 is rotatably supported around the first axis R1 by the gimbal mechanism 7.

As shown in FIGS. 5 and 8, the tip portions of the pair of first gimbal spring extension portions 74 include a pair of arm portions 78 protruding inward on both sides of the first shaft side tubular portion 77 in the circumferential direction. .. When the first connection mechanism 71 is configured, the plate holder extending portion 67 is arranged between the pair of arm portions 78. Further, the pair of plate holder extending portions 67 are bent toward the inner peripheral side, and elastically contact the shaft 710 on the first shaft side from the inner peripheral side.

As shown in FIGS. 5 and 7, the tip portion of the pair of second gimbal spring extension portions 75 includes a second axis side concave curved surface 79 that is recessed on the second axis R2 toward the inner circumference side. In the second connection mechanism 72, a hemispherical surface provided at the tip of the second shaft side shaft 720 held by the second shaft side cylinder portion 39 of the frame case 30 is provided at the tip portion of the second gimbal spring extension portion 75. It is configured by making point contact with the concave curved surface 79 on the second axis side. As a result, the gimbal mechanism 7 is rotatably supported around the second axis R2 by the fixed body 8.

As shown in FIG. 5, when the second connection mechanism 72 is configured, the tip portions of the pair of second gimbal spring extension portions 75 are the pair of arm portions provided on the second vertical frame portion 33 of the frame case 30. Arranged between 37. The pair of arm portions 37 are disconnection prevention portions that regulate the second gimbal spring extension portion 75 from coming off from the second vertical frame portion 33 in the + Z direction. Further, the pair of second gimbal spring extension portions 75 are bent toward the inner peripheral side, and elastically contact the shaft 720 on the second shaft side from the inner peripheral side.

(Magnetic drive mechanism for runout correction and magnetic drive mechanism for rolling correction)
When the movable body 5 and the fixed body 8 are connected by the gimbal mechanism 7, the first magnet 111 fixed to the side surface of the movable body 5 in the −Y direction and the first coil 112 fixed to the stopper case 40 become the first. (1) The runout correction magnetic drive mechanism 11 is configured. Therefore, the movable body 5 rotates about the X axis by supplying power to the first coil 112. Further, the second magnet 121 fixed to the side surface of the movable body 5 in the −X direction and the second coil 122 fixed to the stopper case 40 form the second runout correction magnetic drive mechanism 12. Therefore, the movable body 5 rotates about the Y axis by supplying power to the second coil 122. The runout correction magnetic drive mechanism 10 includes rotation of the movable body 5 around the X axis by the first runout correction magnetic drive mechanism 11 and rotation of the movable body 5 around the Y axis by the second runout correction magnetic drive mechanism 12. , And rotate the movable body 5 around the first axis R1 and around the second axis R2.

Further, when the gimbal mechanism 7 is configured, the rolling correction magnet 131 fixed to the + Y direction side surface of the movable body 5 and the rolling correction coil 132 fixed to the stopper case 40 form a rolling correction magnetic drive mechanism 13. To configure. Therefore, the movable body 5 rotates about the optical axis L by supplying power to the rolling correction coil 132.

(Assembly method)
The optical unit 1 with a runout correction function can be assembled by the following procedures (1) to (9).
(1) Fix the elastic support member 9 to the cover bottom 20 (2) Assemble the frame case 30 to the cover bottom 20 from the + Z direction. Subsequently, the FPC cover 50 is attached to the cover bottom 20 and the frame case 30 from the + Z direction.
(3) Magnets (first magnet 111, second magnet 121, rolling correction magnet 131) are positioned and fixed to the outer peripheral surface of the holder 16, and the rotation support mechanism 6 is assembled to the bottom of the holder 16.
(4) The holder 16, the rotation support mechanism 6, and the magnet assembled in the previous step (3) are placed on the elastic support member 9 from the + Z direction.
(5) Connect the gimbal spring 70 to the rotation support mechanism 6 and the frame case 30. (6) Fix the coils (first coil 112, second coil 122, rolling correction coil 132) to the flexible printed circuit board 15, and from each coil. The drawn coil wire is electrically connected to the land 154 of the flexible printed circuit board 15.
(7) Positioning and fixing the flexible printed circuit board 15 on the inner surface of the stopper case 40 (8) Cover the gimbal spring 70 and the frame case 30 with the stopper case 40 to which the coil and the flexible printed board 15 are fixed from the + Z direction. Locks to the bottom 20 and the FPC cover 50.
(9) The camera module 4 to which the flexible printed board 14 is connected is assembled to the holder 16 from the + Z direction, and the flexible printed board 14 is housed in the FPC cover 50.

(Main action and effect of this form)
As described above, the optical unit 1 with the shake correction function of the present embodiment has a movable body 5 including the camera module 4 and a rotation support mechanism 6 that rotatably supports the movable body 5 about the optical axis L of the camera module 4. And, the rotation support mechanism 6 is rotatably supported around the first axis R1 intersecting the optical axis L, and rotatably supported around the second axis R2 intersecting the optical axis L and intersecting the first axis R1. A reference in which the gimbal mechanism 7 (swing support mechanism), the fixed body 8 that supports the movable body 5 via the rotation support mechanism 6 and the gimbal mechanism 7, and the optical axis L and the preset axis (Z axis) coincide with each other. It has a posture return mechanism for returning the movable body 5 to the posture (origin position of runout correction). The rotation support mechanism 6 includes a plate holder 63 (rotational support member) that rotatably supports the movable body 5 about the optical axis L. The fixed body 8 includes a cover bottom 20 (cover member) facing the plate holder 63 in the optical axis direction. The posture return mechanism includes a plurality of elastic support members 9 arranged between the cover bottom 20 and the plate holder 63 and receiving the load of the movable body 5 via the plate holder 63.

In the present embodiment, the elastic support member 9 that receives the load of the movable body 5 is arranged between the fixed body 8 and the movable body 5 via the plate holder 63. The elastic support members 9 are evenly arranged in the circumferential direction around the center of gravity of the movable body 5 when viewed from the optical axis direction. Therefore, when the movable body 5 is tilted, the movable body 5 can be returned to the reference posture by the elastic return force of the elastic support member 9. Further, the posture return mechanism that receives the load of the movable body 5 by the elastic support member 9 is compared with the posture return mechanism that uses a magnetic spring and the posture return mechanism that suspends the movable body 5 by a plate-shaped spring. It is easy to secure the position accuracy. Therefore, it is possible to easily secure the assembly accuracy required for accurately positioning the movable body 5 in the reference posture.

The elastic support member 9 is made of elastic resin. Since the molded product made of elastic resin can be easily positioned and fixed to the cover bottom 20, the assembly work is easy and the assembly accuracy can be easily ensured. Further, since the elastic resin can be compressed and deformed in all directions, the posture can be returned to the posture change of the movable body 5 in all directions.

For example, in this embodiment, since a low-hardness rubber having a rubber hardness of 10 or less is used as the elastic support member 9, an appropriate elastic recovery force can be obtained. Therefore, it is possible to suppress the required drive current when performing the runout correction of the movable body 5. Further, since the spring constant of the low hardness rubber is substantially constant up to a compression amount of about 50%, it is easy to control the drive current when performing runout correction. The elastic support member 9 is not limited to rubber, and may be an elastic resin other than rubber.

The elastic support member 9 of this embodiment has a cylindrical shape and is circular when viewed from the optical axis direction. If it is circular when viewed from the optical axis direction, it is not necessary to adjust the orientation when installing it on the cover bottom 20, so assembly is easy.

In this embodiment, the elastic support member 9 is fixed to the cover bottom 20. Therefore, when assembling the optical unit 1 with the runout correction function, the holder 16 to which the rotation support mechanism 6 is assembled may be placed on the elastic support member 9 fixed to the cover bottom 20, and the parts are stacked in the Z-axis direction. Can be assembled by. Therefore, it is easy to assemble the optical unit with the runout correction function.

In this embodiment, the elastic support members 9 are arranged at two symmetrical positions on the first axis R1 with respect to the center of gravity of the movable body 5. Since the plate holder extension portion 67 extends in the direction of the first axis R1, the elastic support member 9 can be arranged between the plate holder extension portion 67 and the cover bottom 20.

(Modification example)
(1) In the above embodiment, the number of elastic support members 9 is 2, but it may be 3 or more. For example, protrusions protruding from the plate holder annular portion 66 on both sides in the direction of the second axis R2 are provided, and two points symmetrical with respect to the center of gravity of the movable body 5 on the second axis R2 and the second axis R2. A configuration may be adopted in which the movable body 5 is supported by elastic support members 9 arranged at a total of four places symmetrical with respect to the center of gravity of the movable body 5 above. In this way, by arranging the plurality of elastic support members 9 evenly in the circumferential direction with respect to the center of gravity of the movable body 5, the movable body 5 can be returned to the origin position of the runout correction.

(2) In the above embodiment, the elastic support member 9 is fixed to the cover bottom 20, but the elastic support member 9 may be fixed to either the cover bottom 20 or the plate holder 63. For example, when assembling the optical unit 1 with the runout correction function, an assembly in which the elastic support member 9 is fixed to the surface in the −Z direction of the plate holder 63 may be placed on the cover bottom 20.

(3) FIG. 10A is a cross-sectional view of the elastic support member 9A of the modified example. FIG. 10B is a cross-sectional view showing a state in which the elastic support member 9A of the modified example is compressed between the cover bottom 20 and the plate holder 63. The elastic support member 9 of the above-described form has a cylindrical shape, but the elastic support member 9A of the modified example has a bottom surface fixed to the cover bottom 20 and a spherical tip portion protruding toward the plate holder 63. If the portion in contact with the plate holder 63 is spherical, the elastic support member 9A is uniformly compressed and deformed with respect to the omnidirectional posture change of the movable body 5. Therefore, it is possible to return to the posture in response to the posture change in all directions. In addition, it is easy to control the drive current when performing runout correction.

(4) In the above embodiment, the posture return mechanism includes not only the elastic support member 9 but also a magnetic spring, but a configuration in which the magnetic spring is omitted may be adopted. It is possible to return the movable body 5 to the reference posture only by the elastic return force of the elastic support member 9. When the magnetic spring is omitted, it is not necessary to adjust the positions of the first magnetic member 113 and the second magnetic member 123 constituting the magnetic spring, so that it is easy to secure the assembly accuracy.

1 ... Optical unit with shake correction function, 2 ... Lens, 3 ... Image pickup element, 4 ... Camera module, 4a ... Camera module body, 4b ... Lens tube, 5 ... Movable body, 6 ... Rotational support mechanism, 7 ... Gimbal mechanism , 8 ... Fixed body, 9, 9A ... Elastic support member, 10 ... Magnetic drive mechanism for runout correction, 11 ... Magnetic drive mechanism for first runout correction, 12 ... Magnetic drive mechanism for second runout correction, 13 ... For rolling correction Magnetic drive mechanism, 14, 15 ... Flexible printed substrate, 16 ... Holder, 20 ... Cover bottom, 21 ... First elastic engaging portion, 22 ... First locking portion, 23 ... Second elastic engaging portion, 24 ... First 2 locking part, 25 ... circular hole, 26 ... third elastic engaging part, 27 ... engaging hole, 30 ... frame case, 31 ... rectangular frame part, 32 ... first vertical frame part, 33 ... second vertical frame Part, 34 ... Plate part, 35 ... Protrusion part, 36 ... Plate part, 37 ... Arm part, 38 ... Protrusion part, 39 ... Second shaft side cylinder part, 40 ... Stopper case, 40A ... Body part, 41 ... First Case wall, 42 ... 2nd case wall, 43 ... 3rd case wall, 44 ... end plate, 45A ... 1st case protrusion, 45B ... 2nd case protrusion, 46 ... hook, 46a ... opening, 47 ... concave groove , 48 ... Magnetic member placement groove, 49 ... Engagement hole, 50 ... FPC cover, 51 ... Notch, 52 ... Hooking part, 53 ... Locking part, 61 ... Shaft, 62 ... Bearing, 63 ... Plate holder, 64 ... Attraction magnet, 65 ... Plate holder cylinder part, 66 ... Plate holder annular part, 67 ... Plate holder extension part, 68 ... First axis side concave curved surface, 70 ... Gimbal spring, 71 ... First connection mechanism, 72 ... No. 2 connection mechanism, 73 ... gimbal spring frame part, 74 ... first gimbal spring extension part, 75 ... second gimbal spring extension part, 76 ... gimbal spring relief part, 77 ... first shaft side cylinder part, 78 ... arm part, 79 ... 2nd axis side concave curved surface, 111 ... 1st magnet, 112 ... 1st coil, 113 ... 1st magnetic member, 121 ... 2nd magnet, 122 ... 2nd coil, 123 ... 2nd magnetic member, 131 ... for rolling correction Magnet, 132 ... Rolling correction coil, 151 ... 1st coil fixing part, 152 ... 2nd coil fixing part, 153 ... 3rd coil fixing part, 154 ... Land, 160 ... Notch part, 161 ... Holder bottom, 162 ... Holder frame part, 440 ... Case positioning hole, 610 ... Step part, 621 ... Inner ring, 622 ... Outer ring, 623 ... Sphere, 624 ... Retainer, 710 ... First axis side shaft, 720 ... Second axis side shaft, 731 ... Tapered Part, 732 ... Groove part, 761 ... Protruding part, 762 ... Bending part, 763 ... Straight part, L ... Optical axis , R1 ... 1st axis, R2 ... 2nd axis

Claims (9)

A movable body equipped with a camera module,
A rotary support mechanism that rotatably supports the movable body around the optical axis of the camera module,
A swing support mechanism that rotatably supports the rotary support mechanism around the first axis that intersects the optical axis and rotatably supports the rotation support mechanism around the second axis that intersects the optical axis and intersects the first axis. When,
A fixed body that supports the movable body via the rotation support mechanism and the swing support mechanism, and
It has a posture return mechanism for returning the movable body to a reference posture in which the optical axis and a preset axis coincide with each other.
The rotation support mechanism includes a rotation support member that rotatably supports the movable body about the optical axis.
The fixed body includes a cover member that faces the rotation support member in the optical axis direction.
The posture return mechanism is
A plurality of elastic support members arranged between the cover member and the rotation support member and receiving a load of the movable body via the rotation support member are provided.
An optical unit with a runout correction function, wherein the plurality of elastic support members are evenly arranged in the circumferential direction about the center of gravity of the movable body when viewed from the optical axis direction. The optical unit with a runout correction function according to claim 1, wherein the elastic support member is made of an elastic resin. The optical unit with a runout correction function according to claim 2, wherein the elastic support member is made of a low-hardness rubber having a rubber hardness of 10 or less. The optical unit with a runout correction function according to claim 2 or 3, wherein the elastic support member is circular when viewed from the optical axis direction. The optical unit with a runout correction function according to claim 4, wherein the elastic support member has a cylindrical shape. The elastic support member is fixed to one of the cover member and the rotation support member, and is characterized in that a tip portion protruding toward the other of the cover member and the rotation support member is spherical. The optical unit with a shake correction function according to claim 4. The optical unit with a runout correction function according to any one of claims 1 to 6, wherein the elastic support member is fixed to the cover member. The optical unit with a runout correction function according to any one of claims 1 to 7, wherein the elastic support member is arranged at two symmetrical positions on the first axis with respect to the center of gravity. .. The optical unit with a runout correction function according to any one of claims 1 to 8, wherein the elastic support member is arranged at two symmetrical positions on the second axis with respect to the center of gravity. ..

Images