JP2022040523A - Optical unit with shake correction function - Google Patents

Abstract

To provide an optical unit with a shake correction function, which can efficiently use a magnetic flux of a magnet of a magnetic drive mechanism for shake correction, which drives a movable body.SOLUTION: An optical unit 1 with a shake correction function comprises: a movable body 5 including a magnetic metal holder 16 holding a camera module 4; a gimbal mechanism 7 rotatably supporting the movable body 5 around a first axis R1 and a second axis R2; a fixing body 8 supporting the movable body 5 through the gimbal mechanism 7; and a magnetic drive mechanism 10 for shake correction, which rotates the movable body 5. The magnetic drive mechanism 10 for shake correction includes a first magnet 111 fixed to a holder frame portion 162 and a first coil 112 supported by the fixing body 8. A magnetized polarization line 111c of the first magnet 111 extends in a circumferential direction. The holder frame portion 162 includes an opening 166 overlapping with the magnetized polarization line 111c when viewed from the circumferential direction, at a position adjacent to the first magnet 111.SELECTED DRAWING: Figure 10

Description

The present invention relates to an optical unit with a shake correction function that corrects runout by rotating a camera module around a first axis and a second axis intersecting an optical axis.

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, a movable body equipped with a camera module is provided around the optical axis and around the optical axis. Some are rotated around the first axis that is orthogonal to each other, and around the optical axis and the second axis that is orthogonal to 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 having a camera module and a holder frame for holding the camera module from the outside in the radial direction, a rotation support mechanism for rotatably supporting the movable body about an optical axis, and a rotation support mechanism. It includes a cymbal mechanism and a fixed body that supports a movable body via a gimbal mechanism and a rotation support mechanism. The movable body is arranged on the inner peripheral side of the fixed body. The rotation support mechanism includes an intermediate frame body arranged between the movable body and the fixed body, and a plurality of elastic members spanned radially between the movable body and the intermediate frame body. The plurality of elastic members are arranged at equal angular intervals around the optical axis, and allow rotation of the movable body around the optical axis with respect to the intermediate frame body. The gimbal mechanism is a first connection mechanism that rotatably connects the gimbal spring, the movable body and the intermediate frame body around the first axis, and a second connection that rotatably connects the gimbal spring and the fixed body around the second axis. It is equipped with a mechanism.

The optical unit with a runout correction function has a magnetic drive mechanism for runout correction for rotating the movable body around the first axis and the second axis, and a reeling correction for rotating the movable body around the optical axis. It is equipped with a magnetic drive mechanism. The runout correction magnetic drive mechanism includes a runout correction magnet fixed to the outer surface of the holder frame, and a runout correction coil supported by the fixed body and facing the runout correction magnet in the radial direction. The runout correction magnet is polarized in two poles in the optical axis direction, and its magnetizing polarization line extends in the circumferential direction. The rolling correction magnetic drive mechanism includes a rolling correction magnet fixed to the outer surface of the holder frame, and a rolling correction coil supported by the fixed body and opposed to the rolling correction magnet in the radial direction. The rolling correction magnet is polarized in two poles in the circumferential direction, and its polarization line extends in the optical axis direction.

Japanese Unexamined Patent Publication No. 2019-200270

In the optical unit with a runout correction function of Patent Document 1, if the holder frame to which the runout correction magnet is fixed is made of magnetic metal, the holder frame functions as a yoke of the runout correction magnetic drive mechanism. Therefore, it becomes easy for the magnetic drive mechanism for runout correction to secure the driving force for driving the movable body.

However, when the holder frame is made of magnetic metal, one of the magnetic fluxes of the runout correction magnet directed from one side to the other side of the magnetizing polarization line in the region adjacent to the runout correction magnet in the circumferential direction in the holder frame. The part is short-circuited. Such a short circuit of the magnetic flux reduces the utilization efficiency of using the magnetic flux of the runout correction magnet as a driving force.

In view of these points, an object of the present invention is to provide an optical unit with a runout correction function that can efficiently utilize the magnetic flux of the magnet of the runout correction magnetic drive mechanism that drives a movable body.

In order to solve the above problems, the optical unit with a shake correction function of the present invention intersects a camera module and a movable body having a holder for holding the camera module, and the movable body intersects with the optical axis of the camera module. A gimbal mechanism that rotatably supports around the first axis and rotatably supports around the optical axis and the second axis that intersects the first axis, and a fixing that supports the movable body via the gimbal mechanism. It has a body and a magnetic drive mechanism for vibration correction that rotates the movable body around the first axis and the second axis. The holder is made of magnetic metal, and the camera module is radially outside. The shake correction magnetic drive mechanism includes a frame portion surrounding the frame portion, and the shake correction magnet fixed to the outer surface of the frame portion, and a shake correction magnet supported by the fixed body in the radial direction. The runout correction magnet is provided with a runout correction coil facing each other with a first distance, and the runout correction magnet is polarized to two poles in the optical axis direction, and the first magnetizing polarization line extends in the circumferential direction. The frame portion is provided with a first opening provided along the runout correction magnet at a position adjacent to the runout correction magnet in the circumferential direction, and the first attachment when viewed from the circumferential direction. The magnetic polarization line and the first opening overlap each other.

According to the present invention, the movable body has a holder provided with a frame portion that surrounds the camera module from the radial outside. The holder is made of magnetic metal, and the runout correction magnet of the runout correction magnetic drive mechanism is fixed to the outer surface of the frame portion. The runout correction coil of the runout correction magnetic drive mechanism is fixed to a fixed body and faces the runout correction magnet in the radial direction. As a result, the holder functions as a yoke of the magnetic drive mechanism for runout correction. Therefore, in the runout correction magnetic drive mechanism, it becomes easy to secure the driving force for driving the movable body. Further, the frame portion is provided with a first opening portion that overlaps with the first magnetizing polarization line when viewed from the circumferential direction at a position adjacent to the runout correction magnet in the circumferential direction. This prevents or suppresses a short circuit of a part of the magnetic flux of the runout correction magnet from one side to the other side of the first magnetizing polarization line in the region adjacent to the runout correction magnet in the circumferential direction in the frame portion. can. Therefore, the magnetic flux of the runout correction magnet can be efficiently used as the driving force for driving the movable body. Further, the first opening is provided along the runout correction magnet. Therefore, if the positioning jig is inserted into the first opening and the runout correction magnet is attracted to the frame portion while being in contact with the jig, the runout correction magnet can be positioned in the circumferential direction. As a result, the accuracy of the positional relationship between the runout correction magnet and the runout correction coil can be improved, so that the magnetic flux of the runout correction magnet can be used more efficiently.

In the present invention, the first width dimension of the first opening in the circumferential direction is equal to or larger than the first distance between the runout correction magnet and the runout correction coil in the radial direction. desirable. By doing so, it becomes easy to direct the magnetic flux toward the circumferential direction from the runout correction magnet toward the runout correction coil side. Therefore, it is easier to prevent the magnetic flux of the runout correction magnet from being short-circuited at the frame portion.

In the present invention, the runout correction magnet has a rectangular shape, includes a pair of first side wall surfaces extending in the optical axis direction on both sides in the circumferential direction, and the frame portion serves as the first opening. One side opening extending linearly in the optical axis direction along the first side wall surface, and the other side opening extending linearly in the optical axis direction along the other first side wall surface. Can be prepared. By doing so, it is possible to prevent or suppress short-circuiting of the magnetic flux of the runout correction magnet on both sides of the runout correction magnet in the circumferential direction in the frame portion.

In the present invention, a plurality of first recesses are provided in the first magnet fixing region that overlaps with the runout correction magnet on the outer surface of the frame portion, and the first magnet fixing region and the runout correction magnet are provided. An adhesive layer may be interposed between them. By doing so, since the adhesive forming the adhesive layer is held in the first concave portion, the runout correction magnet can be firmly fixed to the frame portion.

In the present invention, each of the plurality of first recesses is a groove extending in the optical axis direction, and one end of the groove in the optical axis direction is outside the first magnet fixing region on the outer surface. It can be assumed that it has been reached. By doing so, after the runout correction magnet is positioned and attracted to the frame portion, it is adhered from one end in the optical axis direction exposed to the outside from the runout correction magnet in the first concave portion which is a groove. The agent can be poured into the first recess. As a result, an adhesive layer can be formed between the first magnet fixing region and the runout correction magnet, and the runout correction magnet can be fixed to the first magnet fixing region.

In the present invention, the gimbal mechanism includes a rotation support mechanism that rotatably supports the movable body around the optical axis, and a rolling correction magnetic drive mechanism that rotates the movable body around the optical axis. By rotatably supporting the rotation support mechanism around the first axis and the second axis, the movable body is supported via the rotation support mechanism, and the rolling correction magnetic drive mechanism is used. A rolling correction magnet arranged in the circumferential direction of the runout correction magnet and fixed to the outer surface of the frame portion, and a rolling correction magnet held by the fixed body and fixed in the radial direction to a predetermined number. The rolling correction magnet is provided with a rolling correction coil facing each other at two distances, the rolling correction magnet is polarized to two poles in the circumferential direction, and the second magnetizing polarization line extends in the optical axis direction, and the frame. The portion is provided with a second opening at a position adjacent to the rolling correction magnet in the optical axis direction, and when viewed from the optical axis direction, the second magnetizing polarization line and the second opening are Can overlap.

In this way, the movable body can rotate around the first axis and around the second axis in a state where it can rotate around the optical axis. Therefore, the movable body can be rotated around the optical axis, around the first axis, and around the second axis to perform runout correction. The holder also functions as a yoke of a magnetic drive mechanism for rolling correction that drives the movable body around the optical axis. Therefore, it becomes easy for the rolling correction magnetic drive mechanism to secure the driving force for driving the movable body. Further, the frame portion is provided with a second opening portion that overlaps with the second magnetizing polarization line when viewed from the optical axis direction at a position adjacent to the rolling correction magnet in the optical axis direction. This prevents a part of the magnetic flux of the rolling correction magnet from one side to the other side of the second magnetizing polarization line from being short-circuited in the region adjacent to the rolling correction magnet in the optical axis direction in the frame portion. It can be suppressed. Therefore, the magnetic flux of the rolling correction magnet can be efficiently used as the driving force for driving the movable body. Further, the second opening is provided along the rolling correction magnet. Therefore, if the positioning jig is inserted into the second opening and the rolling correction magnet is attracted to the frame portion while being in contact with the jig, the rolling correction magnet can be positioned in the optical axis direction. As a result, the accuracy of the positional relationship between the rolling correction magnet and the rolling correction coil can be improved, so that the magnetic flux of the rolling correction magnet can be used more efficiently.

In the present invention, it is desirable that the second width dimension of the second opening in the optical axis direction is equal to or larger than the second distance between the rolling correction magnet and the rolling correction coil in the radial direction. By doing so, it becomes easy to direct the magnetic flux toward the optical axis direction from the rolling correction magnet toward the rolling correction coil side. Therefore, it is easier to prevent the magnetic flux of the rolling correction magnet from being short-circuited at the frame portion.

According to the present invention, the holder to which the runout correction magnet is fixed in the movable body is made of magnetic metal. As a result, the holder functions as a yoke of the magnetic drive mechanism for runout correction. Therefore, in the runout correction magnetic drive mechanism, it becomes easy to secure the driving force for driving the movable body. Further, the frame portion of the holder is provided with a first opening portion adjacent to the runout correction magnet in the circumferential direction and overlapping with the first magnetizing polarization line of the runout correction magnet when viewed from the circumferential direction. This prevents or suppresses a short circuit of a part of the magnetic flux of the runout correction magnet from one side to the other side of the first magnetizing polarization line in the region adjacent to the runout correction magnet in the circumferential direction in the frame portion. can. Therefore, the magnetic flux of the runout correction magnet can be efficiently used as the driving force for driving the movable body. Further, the first opening is provided along the runout correction magnet. Therefore, if the positioning jig is inserted into the first opening and the runout correction magnet is attracted to the frame portion while being in contact with the jig, the runout correction magnet can be positioned in the circumferential direction. As a result, the accuracy of the positional relationship between the runout correction magnet and the runout correction coil can be improved, so that the magnetic flux of the runout correction magnet can be used more efficiently.

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 a perspective view of a holder, a 1st magnet and a 2nd magnet. It is a perspective view of a stopper case and a magnetic member.

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 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 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. The optical axis L is the optical axis of the lens 2 of the camera module 4. The intersection of the optical axis L, the first axis R1, and the second axis is located inside the camera module 4.

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 by 45 ° 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 the + Z direction is the subject side of the camera module 4. 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. Further, the direction around the Z axis, that is, the direction around the optical axis L is defined as the circumferential direction. The radial direction is the direction centered on the Z axis.

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 rotatably supported around the first axis R1 and rotatably 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 rotation support mechanism that rotatably supports the movable body 5 around the X axis and the Y axis via the rotation support mechanism 6. The intersection of the optical axis L, the X axis, and the Y axis is the same as the intersection of the optical axis L, the first axis R1, and the second axis R2, and is located inside the movable body 5.

Further, the optical unit 1 with a shake 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. A second magnetic drive mechanism 12 for runout correction 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)
FIG. 10 is a perspective view of the holder, the first magnet, and the second magnet. As shown in FIGS. 2 to 5, the movable body 5 includes a camera module 4 and a holder 16 for holding 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 optical axis L of the camera module 4 is the optical axis of the lens 2.

The holder 16 is made of magnetic metal. 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 (frame portion) that rises from the outer peripheral edge of the holder bottom portion 161 in the + Z direction. As shown in FIGS. 2 and 10, the holder frame portion 162 includes a notch portion 160 that opens in the + X direction.

The camera module main body 4a is housed in a camera module housing recess 163 partitioned by a holder bottom portion 161 and a holder frame portion 162. The camera module accommodating recess 163 is provided with a holder opening 163a facing in the + Z direction, and the camera module main body 4a is fitted into the camera module accommodating recess 163 from the + Z 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 bottom 161 is plate-shaped. The end surface of the holder bottom 161 in the −Z direction, that is, the end surface 16a of the holder 16 in the −Z direction becomes perpendicular to the optical axis L when the camera module 4 is held by the holder 16. A shaft portion 61 projecting in the −Z direction is provided at the center of the holder bottom portion 161. The shaft portion 61 is formed on the holder 16 by burring. The shaft portion 61 is coaxial with the optical axis L when the camera module 4 is held in the holder 16.

As shown in FIG. 10, a first magnet 111 (magnet for runout correction) is fixed to the outer surface of the holder frame portion 162 in the −Y direction. A second magnet 121 (magnet for vibration correction) is fixed to the outer surface of the holder frame portion 162 in the −X direction. Further, a rolling correction magnet 131 is fixed to the outer surface of the holder frame portion 162 in the + Y direction.

The first magnet 111 has a rectangular parallelepiped shape, and has a pair of first side wall surfaces 111a extending in the Z-axis direction on both sides in the circumferential direction and a pair of second side wall surfaces 111b extending in the circumferential direction on both sides in the Z-axis direction. Be prepared. Of the pair of second side wall surfaces 111b, the second side wall surface 111b located in the −Z direction is located at the same height as the end surface 16a of the holder 16 in the −Z direction in the Z axis direction. Further, the first magnet 111 is polarized and magnetized to two poles in the Z-axis direction. Therefore, the magnetizing polarization line 111c (first magnetizing polarization line) of the first magnet 111 extends in the circumferential direction.

The second magnet 121 is the same member as the first magnet 111. The second magnet 121 has a rectangular parallelepiped shape, and has a pair of first side wall surfaces 121a extending in the Z-axis direction on both sides in the circumferential direction and a pair of second side wall surfaces 121b extending in the circumferential direction on both sides in the Z-axis direction. Be prepared. Of the pair of second side wall surfaces 121b, the second side wall surface 121b located in the −Z direction is located at the same height as the end surface 16a in the −Z direction of the holder 16 in the Z-axis direction. Further, the second magnet 121 is polarized and magnetized to two poles in the Z-axis direction. Therefore, the magnetizing polarization line 121c (first magnetizing polarization line) of the second magnet 121 extends in the circumferential direction.

Here, on the outer surface of the holder frame portion 162 in the −Y direction, a plurality of recesses 164 are provided in the magnet fixing region 162a (first magnet fixing region) overlapping with the first magnet 111. Further, an adhesive layer 165 is interposed between the magnet fixing region 162a and the first magnet 111. In this example, each of the plurality of recesses 164 is a groove extending linearly in the Z-axis direction. The width of each groove is about 0.03 mm. The end of the recess 164 in the + Z direction in the Z axis direction reaches the outside of the magnet fixing region 162a on the outer surface of the holder frame portion 162 in the −Y direction. Therefore, when the first magnet 111 is arranged in the magnet fixing region 162a, the end of the recess 164 + Z direction is located in the + Z direction with respect to the first magnet 111.

Further, the frame portion in the −Y direction of the holder frame portion 162 includes openings 166 (first openings) extending along the first side wall surfaces 111a on both sides of the first magnet 111 in the circumferential direction. More specifically, the holder frame portion 162 is a one-sided opening extending along one first side wall surface 111a at a position adjacent to one first side wall surface 111a in the circumferential direction of the first magnet 111 as an opening 166. A portion 166a and a other side opening 166b extending along the other first side wall surface 111a at a position adjacent to the other first side wall surface 111a are provided. The one-side opening 166a and the other-side opening 166b have a constant width dimension D1 and extend linearly in the Z-axis direction. When viewed from the circumferential direction, the magnetizing polarization lines 111c of the first magnet 111 and the openings 166a and 166b overlap each other.

Similarly, on the outer surface of the holder frame portion 162 in the −X direction, a plurality of recesses 164 are provided in the magnet fixing region 162b (first magnet fixing region) overlapping with the second magnet 121. Further, an adhesive layer 165 is interposed between the magnet fixing region and the second magnet 121. Each of the plurality of recesses 164 is a groove extending linearly in the Z-axis direction. The end of the recess 164 in the + Z direction in the Z axis direction reaches the outside of the magnet fixing region 162b on the outer surface of the holder frame portion 162 in the −Y direction. Therefore, when the second magnet 121 is arranged in the magnet fixing region 162b, the end of the recess 164 + Z direction is located in the + Z direction with respect to the second magnet 121.

Further, the frame portion in the −X direction of the holder frame portion 162 includes openings 167 (first openings) extending along the first side wall surfaces 121a on both sides of the second magnet 121 in the circumferential direction. More specifically, the holder frame portion 162 is one side extending along one first side wall surface 121a at a position adjacent to one first side wall surface 121a in the circumferential direction of the second magnet 121 as an opening 167. It includes an opening 167a and an opening 167b on the other side extending along the other first side wall surface 121a at a position adjacent to the other first side wall surface 121a. The one-side opening 167a and the other-side opening 167b each extend linearly in the Z-axis direction with a constant width dimension D1.
When viewed from the circumferential direction, the magnetizing polarization lines 121c of the second magnet 121 overlap with the openings 167a and 167b.

Next, the rolling correction magnet 131 has a rectangular parallelepiped shape, and has a pair of first side wall surfaces 131a extending in the circumferential direction on both sides in the Z-axis direction and a pair of second side surface surfaces extending in the Z-axis direction on both sides in the circumferential direction. 131b and. Of the pair of first side wall surfaces 131a, the first side surface located in the −Z direction is located in the −Z direction with respect to the end surface 16a in the −Z direction of the holder 16. The rolling correction magnet 131 is polarized and magnetized to two poles in the circumferential direction. Therefore, the magnetizing polarization line 131c (second polarization polarization line) of the rolling correction magnet 131 extends in the Z-axis direction.

On the outer surface of the holder frame portion 162 in the + Y direction, a plurality of recesses 164 are provided in the magnet fixing region 162c (second magnet fixing region) overlapping the rolling correction magnet 131. Further, an adhesive layer 165 is interposed between the magnet fixing region 162c and the rolling correction magnet 131. Each of the plurality of recesses 164 is a groove extending linearly in the Z-axis direction.

Further, the frame portion in the + Y direction of the holder frame portion 162 includes an opening 168 (second opening) extending along the first side wall surface 131a in the + Z direction at a position adjacent to the rolling correction magnet 131 in the + Z direction. .. The opening 168 has a constant width dimension D2 and extends linearly in the circumferential direction. When viewed from the Z-axis direction, the magnetizing polarization line 111c of the rolling correction magnet 131 overlaps with the opening 168. The + Z direction end of the recess 164 reaches the opening 168. Therefore, the recess 164 and the opening 168 communicate with each other.

Here, when fixing the first magnet 111 to the holder 16, a positioning jig is inserted into the opening 116, and the first magnet 111 is attracted to the holder frame portion 162 while being in contact with the jig. Further, the second side wall surface 111b in the −Z direction of the first magnet 111 and the end surface 16a in the −Z direction of the holder 16 are arranged on the same plane by a jig or the like. As a result, the first magnet 111 is attracted to the holder 16 in a state of being positioned in the circumferential direction and the Z-axis direction. Next, the adhesive is applied to the outer surface of the holder frame portion 162 and the boundary portion of the first magnet 111 in the + Z direction. As a result, the adhesive penetrates the recess 164 from the + Z direction end of the recess 164 located in the + Z direction from the first magnet 111 and reaches the magnet fixing region 162a. Therefore, the adhesive layer 165 is formed between the holder frame portion 162 and the first magnet 111. The first magnet 111 is fixed to the outer surface of the holder frame portion 162 by the adhesive layer 165.

Further, when fixing the rolling correction magnet 131 to the holder 16, a positioning jig is inserted into the opening 168, and the rolling correction magnet 131 is attracted to the holder frame portion 162 while being in contact with the jig. As a result, the rolling correction magnet 131 is held in the holder 16 in a state of being positioned in the Z-axis direction. Next, the adhesive is applied to the opening edge of the opening 168 formed in the + Z direction of the rolling correction magnet 131. As a result, the adhesive penetrates the recess 164 from the + Z direction end of the recess 164 communicating with the opening 168 and reaches the magnet fixing region 162c. Therefore, the adhesive layer 165 is formed between the holder frame portion 162 and the rolling correction magnet 131. The rolling correction magnet 131 is fixed to the outer surface of the holder frame portion 162 by the adhesive layer 165.

(Fixed body)
FIG. 11 is a perspective view of the frame case, the stopper case, the first magnetic member, and the second magnetic member. 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 non-magnetic metal.

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, for example, a sheet metal member having a plate thickness of 0.30 mm, and is manufactured by press working. The frame case 30 is thicker than the cover bottom 20. The stopper case 40 has the same plate thickness as the cover bottom 20, and is manufactured by press drawing. The stopper case 40 surrounds the movable body 5 from three directions of −X direction, −Y direction, and + Y direction.

Further, as shown in FIGS. 2, 3, and 5, 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 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 (see FIGS. 3 and 5). By fitting the hooking portion 52 into the rectangular frame portion 31 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 held on the inner peripheral side 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, 5, and 11, the stopper case 40 has a body portion 40A that surrounds the movable body 5 from three directions and an end that projects from the + Z direction edge of the body portion 40A to the inner peripheral side. A plate portion 44 is provided. 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 in the direction is provided. 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. The first case protrusion 45A includes an extending portion 45a extending from the end plate portion 44 to the inner peripheral side, and a bent portion 45b extending from the end edge on the inner peripheral side of the extending portion in the −Z direction. 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.

As shown in FIGS. 3 and 11, the first case wall 41, the second case wall 42, and the third case wall 43 are provided with a magnetic member placement recess 48 in the center of the outer surface in the circumferential direction. The magnetic member placement recess 48 extends linearly in the optical axis direction with a constant width.

As shown in FIGS. 5 and 11, the first magnetic member 113 is arranged in the magnetic member placement recess 48 provided in the first case wall 41. As shown in FIG. 11, the first magnetic member 113 has a rectangular plate shape and includes two parallel sides extending linearly in the Z-axis direction. The length dimension M in the Z-axis direction of the first magnetic member 113 is shorter than the length dimension N in the Z-axis direction of the magnetic member placement recess 48. Further, the length dimension M in the Z-axis direction of the first magnetic member 113 is longer than the length dimension 0 in the Z-axis direction of the first magnet shown in FIG. The thickness of the first magnetic member 113 is equal to or less than the depth of the magnetic member placement recess 48. Therefore, when the first magnetic member 113 is arranged in the magnetic member placement recess 48, the first magnetic member 113 does not protrude from the magnetic member placement recess 48 toward the outer periphery.

A welding mark 54 for fixing the first magnetic member 113 to the first case wall 41 is provided in the magnetic member placement recess 48. That is, the first magnetic member 113 is fixed to the first case wall 41 by welding. The first magnetic member 113, together with the first magnet 111 held by the movable body 5, 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 placement recess 48 provided in the second case wall 42. The second magnetic member 123 is the same member as the first magnetic member 113. The second magnetic member has a rectangular plate shape and has two parallel sides extending linearly in the Z-axis direction. The length dimension M in the Z-axis direction of the second magnetic member is shorter than the length dimension N in the Z-axis direction of the magnetic member placement recess 48. Further, the length dimension M in the Z-axis direction of the second magnetic member is longer than the length dimension O in the Z-axis direction of the second magnet. The thickness of the second magnetic member 123 is equal to or less than the depth of the magnetic member placement recess 48. Therefore, when the second magnetic member 123 is arranged in the magnetic member placement recess 48, the second magnetic member 123 does not protrude from the magnetic member placement recess 48 toward the outer periphery.

A welding mark 54 for fixing the second magnetic member 123 to the second case wall 42 is provided in the magnetic member placement recess 48. That is, the second magnetic member 123 is fixed to the second case wall 42 by welding. The second magnetic member 123, together with the second magnet 121 held by the movable body 5, constitutes a magnetic spring for positioning the movable body 5 at the origin position in the runout correction around the Y axis.

Here, as shown in FIG. 3, the hook 46 is a raised portion in which the bottom portion of the magnetic member placement recess 48 is cut and raised toward the inner peripheral side. Therefore, in the bottom portion of the magnetic member placement recess 48, the portion where the hook 46 is cut and raised 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, each of the pair of second vertical frame portions 33 includes a plate portion 36 extending in the + Z direction and a pair of protrusions 37 protruding from substantially the center of the edges on both sides in the width direction of the plate portion 36 in the Z-axis direction. The protrusions 37 are provided with four protrusions 38 protruding from both 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.

Here, as shown in FIG. 7, each second vertical frame portion 33 is provided with a second axis side protrusion 56 that projects on the second axis R2 toward the movable body 5. Specifically, each of the second vertical frame portions 33 has a through hole 36a that penetrates the plate portion 36 in the second axis R2 direction and an inner circumference in the second axis R2 direction from the opening edge of the through hole 36a in the plate portion 36. A second shaft side cylinder portion 39 projecting to the side is provided. A cylindrical second shaft side shaft 720 is held in the through hole 36a and the second shaft side cylinder portion 39. The end portion on the inner peripheral side of the second shaft side shaft 720 is a second shaft side protrusion 56 protruding from the plate portion 36 toward the movable body 5. The tip portion of the second shaft side protrusion 56 includes a hemispherical surface. The second shaft side protrusion 56 constitutes the second connection mechanism 72 of the gimbal mechanism 7, as will be described later. Here, the pair of protrusions 37 are provided on both sides of the second shaft side tubular portion 39 in the circumferential direction.

(Rotation support mechanism)
As shown in FIGS. 4, 6 and 7, the rotary support mechanism 6 has a shaft portion 61 protruding from the movable body 5 in the −Z direction, and is supported by the gimbal mechanism 7 around the first axis R1 and the second axis. A plate holder 63 that rotates around R2 and a bearing mechanism 62 that rotatably supports the shaft portion 61 on the plate holder 63 are provided. Further, as shown in FIG. 3, the rotation support mechanism 6 includes a suction magnet 64 that is fixed to the plate holder 63 and attracts the holder to the side of the plate holder 63. The shaft portion 61 of the movable body 5 is coaxial with the optical axis L.

The plate holder 63 is made of non-magnetic metal. As shown in FIG. 6, the plate holder 63 includes a plate holder cylinder portion 65 that surrounds the shaft portion 61, a plate holder annular portion 66 that extends from the + Z direction end portion of the plate holder cylinder portion 65 toward the outer peripheral side, and a plate holder annular portion. A pair of plate holder extending portions 67 protruding from the portion 66 on both sides in the direction of the first axis R1 and bent in the + Z direction are provided. The bearing mechanism 62 is a bearing. The bearing mechanism 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. And an annular retainer 624 that rotatably holds the sphere 623. The suction magnet 64 is annular and is fixed to the surface of the plate holder annular portion 66 opposite to the holder 16. The suction magnet 64 is thinner than the bearing mechanism 62 in the Z-axis direction. The adsorption magnet 64 is polarized and magnetized to a plurality of poles in the circumferential direction.

In a state where the shaft portion 61 and the plate holder 63 are connected via the bearing mechanism 62, the plate holder annular portion 66 faces the end surface 16a of the holder 16 in the −Z direction with a certain gap. The suction magnet 64 is located on the outer side in the radial direction of the bearing mechanism 62, and is located on the inner side of the bearing mechanism 62 when viewed from a direction orthogonal to the Z axis.

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 shaft side recess 68 that is recessed on the first shaft R1 toward the inner peripheral side. The first shaft side recess 68 includes a concave curved surface. The first shaft side recess 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. The elastic support member 9 is made of, for example, a silicon-based rubber having a rubber hardness of 1 to 3. Here, the elastic support member 9 receives the load of the movable body 5 and the rotary support mechanism 6 via the plate holder 63 of the rotary support mechanism 6 arranged at the bottom of the movable body 5 (see FIG. 6). The elastic support member 9 is configured such that the height in the Z-axis direction between the plate holder 63 and the cover bottom 20 has a compression ratio of about 10% due to the load of the movable body 5 and the rotation support mechanism 6. Has been done. The elastic support member 9 is fixed to the cover bottom 20, but is not fixed to the plate holder 63.

The elastic support member 9 is symmetrically arranged with the optical axis L interposed therebetween and is fixed to the cover bottom 20. In this embodiment, since the center of gravity of the movable body 5 is located on the optical axis, the elastic support members 9 are arranged symmetrically with respect to the center of gravity of the movable body 5. Therefore, by receiving the load of the movable body 5 and the rotary support mechanism 6 by the elastic support member 9, the position accuracy when positioning the movable body 5 at the origin position of the runout correction can be improved. 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 fixed body 8 around the second axis R2. In this example, the second connection mechanism 72 connects the gimbal spring 70 and the frame case 30. 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 rotate around the intersection where the optical axis L, the first axis R1, and the second axis R2 intersect.

The gimbal spring 70 is a metal leaf spring. The gimbal spring 70 has a frame shape and surrounds the movable body 5 from the outer peripheral side. As shown in FIG. 8, the gimbal spring 70 is a pair of first connecting portions 74 located on both sides of the movable body 5 in the first axis R1 direction, and a pair of second positions of the movable body 5 located on both sides of the second axis R2 direction. It has two connecting portions 75, and four arm portions 73 that connect the first connecting portion 74 and the second connecting portion 75 that are adjacent to each other in the circumferential direction on the outer peripheral side of the movable body 5.

Each first connection portion 74 has a plate shape, and its thickness direction is directed to the first axis R1 direction. Each second connecting portion 75 has a plate shape, and its thickness direction is directed to the second axis R2 direction. Each arm portion 73 has a first end portion 74a on the side of the second connection portion 75 at the + Z direction end edge of the first connection portion 74 and a first connection portion 74 at the + Z direction end edge of the second connection portion 75. The second end portion 75a on the side of the above is connected. Here, the two arm portions 73 extending from each first connecting portion 74 on both sides in the circumferential direction are separated from each other in the circumferential direction. Therefore, each first connecting portion 74 includes a first central portion 74b to which the arm portion 73 is not connected at the center in the circumferential direction of the edge in the + Z direction. Similarly, the two arm portions 73 extending from each second connecting portion 75 on both sides in the circumferential direction are separated from each other in the circumferential direction. Therefore, each second connecting portion 75 includes a second central portion 75b to which the arm portion 73 is not connected at the center in the circumferential direction of the edge in the + Z direction.

Each arm portion 73 has a first inclined portion 731 whose circumferential direction is inclined toward the second connecting portion 75 in the + Z direction from the first end portion 74a of the first connecting portion 74, and a second connecting portion 75. The second inclined portion 732 that inclines the circumferential direction from the two end portion 75a toward the + Z direction toward the first connecting portion 74, and the + Z direction end portion of the first inclined portion 731 and the + Z direction of the second inclined portion 732. A connection portion 733 for connecting to the end portion of the above is provided.

Of the four arm portions 73, the connecting portions 733 of the three arm portions 73 located in the −X direction, the −Y direction, and the + Y direction of the movable body 5 are in the + Z direction of the first inclined portion 731, respectively. It extends in the circumferential direction between the end portion and the end portion of the second inclined portion 732 in the + Z direction. A bent portion 734 that is recessed in the −Z direction is provided at the central portion in the circumferential direction of the connecting portion 733 of the three arm portions 73.

Of the four arm portions 73, the connecting portion 733 of the arm portion 73 located in the + X direction of the movable body 5 has a shape that avoids interference with the flexible printed substrate 14 extending from the movable body 5 in the + X direction. Specifically, the connecting portion 733 is a pair of protruding portions 761 extending in the + X direction from the + Z direction end portion of the first inclined portion 731 and the + Z direction end portion of the second inclined portion 732, respectively. A pair of bent portions 762 that bend in the -Z direction and extend in the Z-axis direction from the tip of each protruding portion 761 in the + X direction, and a pair of bent portions 762 that extend linearly in the Y-axis direction and connect in the -Z direction. A straight line portion 763 is provided. If it does not interfere with the flexible printed substrate 14, the connecting portion 733 of the arm portion 73 located in the + X direction of the movable body 5 shall extend in the circumferential direction in the same manner as the connecting portion 733 of the other arm portion 73. Can be done.

Here, as shown in FIG. 6, each first connection portion 74 is provided with a first shaft side protrusion 80 that projects on the first shaft R1 toward the movable body 5. Specifically, the first connection portion 74 includes a through hole 74c penetrating the first shaft R1 and a first shaft side cylinder portion 77 protruding from the opening edge of the through hole 74c in the first connection portion 74 toward the outer peripheral side. , Equipped with. A cylindrical first shaft side shaft 710 is held in the through hole 74c and the first shaft side cylinder portion 77. The end portion on the inner peripheral side of the first shaft side shaft 710 is a first shaft side protrusion 80 protruding inward in the radial direction from the first shaft side cylinder portion 77. The first shaft side protrusion 80 has a hemispherical surface at the tip on the inner peripheral side. Further, as shown in FIG. 8, the pair of first connecting portions 74 is provided with a pair of protrusions 78 protruding inward on both sides of the first shaft side tubular portion 77 in the circumferential direction.

In the first connection mechanism 71, the hemisphere provided at the tip of the first shaft side protrusion 80 makes point contact with the concave curved surface of the first shaft side recess 68 provided at the tip of the plate holder extending portion 67. It is composed of. When the first connection mechanism 71 is configured, the plate holder 63 is supported by the gimbal spring 70 in a state of being rotatable around the first axis R1. In a state where the first shaft side protrusion 80 is supported by the first shaft side recess 68, the pair of plate holder extension portions 67 are bent toward the inner peripheral side, and the inner peripheral side of the first shaft side protrusion 80. Elastic contact from.

When the first connection mechanism 71 is configured, the rotation support mechanism 6 is rotatably supported around the first axis R1 by the gimbal mechanism 7. Further, when the first connection mechanism 71 is configured, as shown in FIG. 5, the plate holder extending portion 67 is arranged between the pair of protrusions 78. Pair of protrusions 78
Is a disconnection prevention portion that regulates the plate holder extension portion 67 from disconnecting from the first connection portion 74 in the Z-axis direction.

As shown in FIGS. 5 and 7, each of the pair of second connecting portions 75 includes a second shaft side recess 79 that is recessed on the second shaft R2 toward the inner peripheral side. The second shaft side recess 79 has a concave curved surface. The second connection mechanism 72 is configured such that the hemisphere of the second shaft side protrusion 56 provided on each second vertical frame portion 33 of the frame case 30 makes point contact with the concave curved surface of the second shaft side recess 79. To. When the second connection mechanism 72 is configured, the gimbal spring 70 is supported by the fixed body 8 in a state of being rotatable around the second axis R2. In a state where the second shaft side recess 79 is supported by the second shaft side protrusion 56, the pair of second connection portions 75 are bent toward the inner peripheral side, and the second shaft side protrusion 56 is bent from the inner peripheral side. Elastic contact.

When the second connection mechanism 72 is configured, the gimbal mechanism 7 is rotatably supported around the second axis R2 by the fixed body 8. Further, when the second connection mechanism 72 is configured, as shown in FIG. 5, the tip portions of the pair of second connection portions 75 are the pair of protrusions 37 provided on the second vertical frame portion 33 of the frame case 30. Placed between. The pair of protrusions 37 are disconnection prevention portions that regulate the second connection portion 75 from disconnecting from the second vertical frame portion 33 in the + Z direction.

Here, in a state where the movable body 5 and the fixed body 8 are connected via the gimbal mechanism 7 and the rotation support mechanism 6, the body portion 40A of the fixed body 8, that is, the body portion 40A of the stopper case 40 is the movable body 5. And located on the radial outer side of the gimbal spring 70. Further, as shown in FIGS. 4, 6 and 7, the gimbal spring 70 and the holder 16 are located on the outer side in the radial direction of the camera module main body 4a and in the −Z direction from the end face in the + Z direction of the camera module main body 4a. The fixed body 8 is located on the radial outside of the movable body 5 in the −Z direction with respect to the end face in the + Z direction of the camera module main body 4a. Therefore, a part of the movable body 5 and the gimbal mechanism 7 in the + Z direction protrudes from the stopper case 40 in the + Z direction.

(Magnetic drive mechanism for runout correction and magnetic drive mechanism for rolling correction)
As shown in FIG. 5, when the movable body 5 is supported by the fixed body 8 via the gimbal mechanism 7 and the rotation support mechanism 6, the first magnet 111 and the stopper fixed to the side surface of the movable body 5 in the −Y direction are stopped. The first coil 112 fixed to the case 40 faces in the radial direction. As a result, the first magnet 111 and the first coil 112 form the first runout correction magnetic drive mechanism 11. Therefore, the movable body 5 rotates about the X axis by supplying power to the first coil 112. Here, the distance E1 (first distance) at which the first magnet 111 and the first coil 112 are separated in the Y-axis direction is an opening provided in the holder frame portion 162 next to the circumferential direction of the first magnet 111. It is shorter than the circumferential width dimension D1 (see FIG. 10) of 166.

Further, when the movable body 5 is supported by the fixed body 8 via the gimbal mechanism 7 and the rotation support mechanism 6, it is fixed to the second magnet 121 fixed to the side surface of the movable body 5 in the −X direction and the stopper case 40. The second coil 122 faces the second coil 122 in the radial direction. As a result, the second magnet 121 and the second coil 122 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. Here, the distance E2 (first distance) at which the second magnet 121 and the second coil 122 are separated in the X-axis direction is an opening provided in the holder frame portion 162 next to the circumferential direction of the second magnet 121. It is shorter than the circumferential width dimension D1 (see FIG. 10) of 167.

Further, when the movable body 5 is supported by the fixed body 8 via the gimbal mechanism 7 and the rotation support mechanism 6, it is fixed to the rolling correction magnet 131 and the stopper case 40 fixed to the side surface of the movable body 5 in the + Y direction. The rolling correction coil 132 faces in the radial direction. As a result, the rolling correction magnet 131 and the rolling correction coil 132 form a rolling correction magnetic drive mechanism 13. Therefore, the movable body 5 rotates about the optical axis L by supplying power to the rolling correction coil 132. Here, as shown in FIGS. 3 and 10, the distance E3 (second distance) at which the first magnet 111 and the first coil 112 are separated in the Y-axis direction is the rolling correction magnet 131 in the holder frame portion 162. It is shorter than the width dimension D2 in the Z-axis direction of the opening 168 provided next to the + Z direction of.

Further, when the movable body 5 is supported by the fixed body 8 via the gimbal mechanism 7 and the rotation support mechanism 6, the magnetic member placement recess 48 of the stopper case 40 and the first magnet 111 are attached when viewed from the radial direction. It overlaps with the magnetic polarization line 111c. Similarly, the second magnetic member 123 arranged in the magnetic member placement recess 48 and the magnetizing polarization line 121c of the second magnet 121 overlap each other. When there is no power supply to the first coil 112 and the second coil 122, the magnetic attraction acting between the first magnetic member 113 and the first magnet 111, and the second magnetic member 123 and the second magnet 121 Due to the magnetic attraction acting between the two, the posture of the movable body 5 becomes a reference posture in which the optical axis of the camera module 4 and the Z axis, which is the reference axis, coincide with each other.

Further, when the movable body 5 is supported by the fixed body 8 via the gimbal mechanism 7 and the rotation support mechanism 6, as shown in FIG. 6, in the stopper case 40, the inner circumference is from the diagonal position in the first axis R1 direction. The first case protrusion 45A projecting to the side is located between the two arm portions 73 extending from the first connection portion 74 of the gimbal spring 70 on both sides in the circumferential direction. Further, the first case protrusion 45A faces the first central portion 74b of the + Z direction end edge of the first connection portion 74 with a predetermined first gap Q1 in the Z axis direction. Further, the bent portion 45b of the first case protrusion 45A faces the holder 16 with a slight gap in the first axial direction. Further, in the stopper case 40, the second case protrusion 45B protruding inward from the diagonal position in the second axis R2 direction is between the two arm portions 73 extending from the second connecting portion 75 on both sides in the circumferential direction. Located in. Further, the second case protrusion 45B faces the second central portion 75b of the + Z direction end edge of the second connecting portion 75 with a predetermined second gap Q2 in the Z axis direction.

Here, the pair of second case protrusions 45B defines a rotation angle range around the first axis R1 of the movable body 5. That is, each second case protrusion 45B is attached to the second connection portion 75 of the gimbal spring 70 that rotates together with the movable body 5 from the front in the rotation direction when the movable body 5 rotates to a predetermined rotation angle around the first axis R1. Upon contact, the gimbal spring 70 is prevented from further rotating around the first axis R1. Therefore, the rotation angle range around the first axis R1 of the movable body 5 can be defined by the second case protrusion 45B.

Further, the pair of first case protrusions 45A defines a rotation angle range around the second axis R2 of the movable body 5. That is, each first case protrusion 45A is attached to the first connection portion 74 of the gimbal spring 70 that rotates together with the movable body 5 from the front in the rotation direction when the movable body 5 rotates around the second axis R2 to a predetermined rotation angle. Upon contact, the gimbal spring 70 is prevented from further rotating around the second axis R2. Therefore, the rotation angle range around the second axis R2 of the movable body 5 can be defined by the first case protrusion 45A.

Further, the pair of first case protrusions 45A defines the range of movement of the movable body 5 in the direction of the first axis R1 when an impact or the like is applied from the outside. That is, when the movable body 5 moves to one side in the first axis R1 direction due to an impact from the outside or the like, the bent portion 45b of the first case protrusion 45A located on one side in the first axis R1 direction moves. It abuts on the holder 16 from the front in the direction and restricts the movable body 5 from moving further to one side in the first axis R1 direction. Further, when the movable body 5 moves to the other side in the first axis R1 direction due to an impact from the outside or the like, the bent portion 45b of the first case protrusion 45A located on the other side in the first axis R1 direction is formed. It abuts on the holder 16 from the front in the moving direction, and restricts the movable body 5 from moving further to the other side in the first axis R1 direction.

(Action effect)
According to this example, the movable body 5 has a holder 16 provided with a holder frame portion 162 that surrounds the camera module 4 from the outside in the radial direction. The holder 16 is made of magnetic metal, and the first magnet 111 and the second magnet 121 of the runout correction magnetic drive mechanism 10 are fixed to the outer surface of the holder frame portion 162. Further, the first coil 112 and the second coil 122 of the runout correction magnetic drive mechanism 10 are fixed to the fixed body 8 and face the first magnet 111 and the second magnet 121 in the radial direction. As a result, the holder 16 functions as a yoke of the magnetic drive mechanism 10 for runout correction. Therefore, in the runout correction magnetic drive mechanism 10, it becomes easy to secure the driving force for driving the movable body 5.

Further, the holder frame portion 162 is provided with an opening 116 at a position adjacent to the first magnet 111 in the circumferential direction, which overlaps with the magnetizing polarization line 111c of the first magnet 111 when viewed from the circumferential direction. This prevents a part of the magnetic flux of the first magnet 111 toward the other side from one side of the magnetizing polarization line 111c from being short-circuited in the region adjacent to the first magnet 111 in the circumferential direction in the holder frame portion 162. It can be suppressed. Therefore, the magnetic flux of the first magnet 111 can be efficiently used as the driving force for driving the movable body 5. Similarly, the holder frame portion 162 is provided with an opening 117 at a position adjacent to the second magnet 121 in the circumferential direction, which overlaps with the magnetizing polarization line 121c of the second magnet 121 when viewed from the circumferential direction. This prevents a part of the magnetic flux of the second magnet 121 from one side to the other side of the magnetizing polarization line 121c from being short-circuited in the region adjacent to the second magnet 121 in the circumferential direction in the holder frame portion 162. It can be suppressed. Therefore, the magnetic flux of the second magnet 121 can be efficiently used as the driving force for driving the movable body 5.

Further, the opening 116 is provided along the first side wall surface 111a of the first magnet 111. Therefore, if a positioning jig is inserted into the opening 116 and the first magnet 111 is attracted to the holder frame portion 162 while being in contact with the jig, the first magnet 111 can be positioned in the circumferential direction. Similarly, the opening 117 is provided along the first side wall surface 111a of the second magnet 121. Therefore, if a positioning jig is inserted into the opening 116 and the second magnet 121 is attracted to the holder frame portion 162 while being in contact with the jig, the second magnet 121 can be positioned in the circumferential direction.

Further, the width dimension D1 of the opening 116 in the circumferential direction is equal to or greater than the distance E1 at which the first magnet 111 and the first coil 112 are separated from each other in the radial direction. Therefore, the magnetic flux directed in the circumferential direction from the first magnet 111 can be directed toward the first coil 112. Therefore, it is easier to prevent the magnetic flux of the first magnet 111 from being short-circuited at the holder frame portion 162. Similarly, the width dimension D1 of the opening 117 in the circumferential direction is equal to or greater than the distance E2 at which the second magnet 121 and the second coil 122 are separated from each other in the radial direction. Therefore, the magnetic flux directed in the circumferential direction from the second magnet 121 can be directed toward the second coil 122. Therefore, it is easier to prevent the magnetic flux of the second magnet 121 from being short-circuited at the holder frame portion 162.

Further, the holder frame portion 162 includes, as an opening 116, a one-sided opening 116a provided on one side in the circumferential direction of the first magnet 111 and an 116b provided on the other side. Therefore, it is possible to prevent or suppress the short circuit of the magnetic flux of the first magnet 111 on both sides of the holder frame portion 162 in the circumferential direction. Similarly, the holder frame portion 162 includes, as an opening portion 117, a one-sided opening portion 117a provided on one side in the circumferential direction of the second magnet 121 and a 117b provided on the other side. Therefore, it is possible to prevent or suppress the short circuit of the magnetic flux of the second magnet 121 on both sides of the holder frame portion 162 in the circumferential direction.

Further, in this example, a plurality of recesses 164 are provided in the magnet fixing region 162a that overlaps with the first magnet 111 on the outer surface of the holder frame portion 162. An adhesive layer 165 is interposed between the first magnet 111 and the magnet fixing region 162a. As a result, the adhesive forming the adhesive layer 165 is held in the recess 164, so that the first magnet 111 can be firmly fixed to the holder frame portion 162. Similarly, a plurality of recesses 164 are provided in the magnet fixing region 162b that overlaps with the second magnet 121 on the outer surface of the holder frame portion 162. An adhesive layer 165 is interposed between the second magnet 121 and the magnet fixing region 162b. As a result, the adhesive forming the adhesive layer 165 is held in the recess 164, so that the second magnet 121 can be firmly fixed to the holder frame portion 162.

Further, each of the plurality of recesses 164 is a groove extending in the Z-axis direction. Further, one end of the groove in the Z-axis direction reaches the outside of the magnet fixing regions 162a and 162b. Therefore, in this example, after the first magnet 111 and the second magnet 121 are attracted to the holder frame portion 162, the adhesive is applied from the + Z direction of the first magnet 111 and the second magnet 121 to obtain the first magnet. The adhesive layer 165 can be formed between the magnet 111 and the magnet fixing region 162a and between the second magnet 121 and the magnet fixing region 162b.

Further, in this example, the gimbal mechanism 7 supports the movable body 5 via the rotation support mechanism 6 by rotatably supporting the rotation support mechanism 6 around the first axis R1 and the second axis R2. .. Therefore, the movable body 5 can rotate around the first axis R1 and around the second axis R2 in a state where it can rotate around the optical axis L. Therefore, the movable body 5 can be rotated around the optical axis L, around the first axis R1, and around the second axis R2 to perform runout correction.

Further, the rolling correction magnetic drive mechanism 13 is fixed to the rolling correction magnet 131 arranged in the circumferential direction of the first magnet 111 and the second magnet 121 and fixed to the outer surface of the holder frame portion 162, and to the fixed body 8. It is provided with a rolling correction magnet 131 and a rolling correction coil 132 facing each other with a predetermined gap in the radial direction. Therefore, the holder 16 functions as a yoke of the rolling correction magnetic drive mechanism 13 that drives the movable body 5 around the optical axis L. Therefore, it becomes easy for the rolling correction magnetic drive mechanism 13 to secure the driving force for driving the movable body 5.

Further, the rolling correction magnet 131 is polarized to two poles in the circumferential direction, and its second polarization line extends in the Z-axis direction. The holder frame portion 162 is provided with an opening portion 168 at a position adjacent to the rolling correction magnet 131 in the Z-axis direction. When viewed from the Z-axis direction, the second magnetized polarization line and the opening 168 overlap each other. As a result, a part of the magnetic flux of the rolling correction magnet 131 toward the other side from one side of the second magnetizing polarization line is short-circuited in the region adjacent to the rolling correction magnet 131 in the Z-axis direction in the holder frame portion 162. This can be prevented or suppressed. Therefore, the magnetic flux of the rolling correction magnet 131 can be efficiently used as the driving force for driving the movable body 5.

Here, the opening 168 is provided along the rolling correction magnet 131. Therefore, if a positioning jig is inserted into the opening 168 and the rolling correction magnet 131 is attracted to the holder frame portion 162 while being in contact with the jig, the rolling correction magnet 131 can be positioned in the Z-axis direction.

Further, the width dimension D2 of the opening 168 in the Z-axis direction is equal to or larger than the distance E3 at which the rolling correction magnet 131 and the rolling correction coil 132 are separated from each other in the radial direction. Therefore, it becomes easy to direct the magnetic flux toward the Z-axis direction from the rolling correction magnet 131 in the radial direction. Therefore, it is easier to prevent the magnetic flux of the rolling correction magnet 131 from being short-circuited at the holder frame portion 162.
(Modification example)
The stopper case 40 (body portion 40A) of the fixed body may be made of resin. In this case, the magnetic members 113 and 123 are fixed to the body portion 40A by an adhesive. Therefore, the adhesive layer 165 is provided between the body portion 40A and the magnetic members 113 and 123.

Further, in order to form the first connection mechanism 71, a first shaft side protrusion 80 is provided at the tip of the plate holder extension portion 67 so as to project on the first shaft R1 toward the outer peripheral side, and the first connection of the gimbal spring is made. A first shaft side recess may be provided on the first shaft R1 of the portion 74 to rotatably receive the first shaft side protrusion. Similarly, in order to form the second connection mechanism 72, a second shaft side protrusion is provided on the second shaft R1 of the second connection portion 75 of the gimbal spring, and the plate of each second vertical frame portion 33 of the frame case 30 is provided. A second shaft side recess may be provided on the second shaft R2 of the portion 36 to rotatably receive the second shaft side protrusion.

Here, when only the yaw direction YAW around the X axis and the pitch direction PITCH around the Y axis are corrected as the runout correction, the rotation support mechanism 6 may be omitted from the optical unit 1 with the runout correction function. .. In this case, the optical unit 1 with a shake correction function rotatably supports the movable body 5 including the camera module 4 and the movable body 5 around the first axis R1 intersecting the optical axis L of the lens of the camera module 4. At the same time, the gimbal mechanism 7 that rotatably supports the optical axis L and the second axis R2 that intersects the first axis, the fixed body 8 that supports the movable body 5 via the gimbal mechanism 7, and the movable body 5 are provided. It has a runout correction magnetic drive mechanism 10 that rotates around the first axis R1 and around the second axis R2. Further, in this case, the shaft portion 61 is omitted from the holder 16. Further, the plate holder 63 is integrated with the holder 16 to form the holder 16 of the movable body 5. As a result, the rotation support mechanism 6 can be omitted.

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 ... Rotation support mechanism, 7 ... Gimbal mechanism , 8 ... Fixed body, 9 ... 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 ... Magnetic drive for rolling correction Mechanism, 14 ... Flexible printed board, 15 ... Flexible printed board for power supply, 16 ... Holder, 16a ... Holder end face, 20 ... Cover bottom, 23 ... Second elastic engaging part, 24 ... Second locking part, 25 ... Circular hole, 26 ... Third elastic engagement part, 27 ... Engagement hole, 30 ... Frame case, 31 ... Rectangular frame part, 32 ... First vertical frame part, 33 ... Second vertical frame part, 34, 26 ... Plate part, 35, 38 ... protrusion, 36a ... through hole, 37 ... protrusion, 39 ... second shaft side cylinder part, 40 ... stopper case, 40A ... body part, 41 ... first case wall, 42 ... second case Wall, 43 ... 3rd case wall, 44 ... end plate part, 45A ... 1st case protrusion, 45a ... extension part, 45b ... bending part, 45B ... 2nd case protrusion, 46 ... hook, 46a ... opening, 47 ... concave groove, 48 ... magnetic member placement recess, 49 ... engagement hole, 50 ... FPC cover, 52 ... hooking part, 53 ... locking part, 54 ... welding mark, 56 ... second shaft side protrusion, 60 ... body Part, 61 ... Shaft part, 62 ... Bearing mechanism, 63 ... Plate holder, 64 ... Adsorption magnet, 65 ... Plate holder cylinder part, 66 ... Plate holder annular part, 67 ... Plate holder extension part, 68 ... First shaft side Recess, 70 ... gimbal spring, 71 ... first connection mechanism, 72 ... second connection mechanism, 73 ... arm, 74 ... first connection, 74a ... first end, 74b ... first center, 74c ... through hole , 75 ... 2nd connection part, 75a ... 2nd end part, 75b ... 2nd central part, 77 ... 1st shaft side cylinder part, 78 ... pair of protrusions, 79 ... 2nd shaft side recess, 80 ... 1st shaft Side protrusion, 111 ... 1st magnet, 111a ... 1st side wall surface, 111b ... 2nd side wall surface, 111c ... Magnetized polarization line, 112 ... 1st coil, 113 ... 1st magnetic member, 116 ... opening, 121 ... 2nd magnet, 121a ... 1st side wall surface, 121b ... 2nd side wall surface, 121c ... Magnetizing polarization line, 122 ... 2nd coil, 123 ... 2nd magnetic member, 131 ... Rolling correction magnet, 131a ... 1st Side wall surface, 131b ... pair of second side surface surfaces, 131c ... magnetizing polarization line, 132 ... rolling correction coil, 151 ... first coil fixing portion, 152 ... second
Coil fixing part, 153 ... Third coil fixing part, 160 ... Notch, 161 ... Holder bottom, 162 ... Holder frame part, 162a ... Magnet fixing area, 162b ... Magnet fixing area, 162c ... Magnet fixing area, 163 ... Camera Module housing recess, 163a ... holder opening, 164 ... recess, 165 ... adhesive layer, 166 ... opening, 166a ... one side opening, 166b ... other side opening, 167 ... opening, 167a ... one side opening , 167b ... other side opening, 168 ... opening, 440 ... case positioning hole, 610 ... step, 621 ... inner ring, 622 ... outer ring, 623 ... sphere, 624 ... retainer, 710 ... first shaft side shaft, 720 ... 2nd shaft side shaft, 731 ... 1st inclined portion, 732 ... 2nd inclined portion, 733 ... connection portion, 734 ... bent portion, 761 ... protruding portion, 762 ... bent portion, 763 ... straight portion

Claims (7)

A camera module, and a movable body having a holder for holding the camera module,
A gimbal mechanism that rotatably supports the movable body around a first axis that intersects the optical axis of the camera module, and rotatably supports the optical axis and a second axis that intersects the first axis.
A fixed body that supports the movable body via the gimbal mechanism,
It has a runout correction magnetic drive mechanism that rotates the movable body around the first axis and around the second axis.
The holder is made of magnetic metal and has a frame portion that surrounds the camera module from the outside in the radial direction.
The runout correction magnetic drive mechanism faces the runout correction magnet fixed to the outer surface of the frame portion and the runout correction magnet supported by the fixed body with a predetermined first distance in the radial direction. Equipped with a runout correction coil,
The runout correction magnet is polarized to two poles in the optical axis direction, and its first polarization line extends in the circumferential direction.
The frame portion includes a first opening provided along the runout correction magnet at a position adjacent to the runout correction magnet in the circumferential direction.
An optical unit with a runout correction function, characterized in that the first magnetic polarization line and the first opening overlap when viewed from the circumferential direction. A claim that the first width dimension of the first opening in the circumferential direction is equal to or larger than the first distance between the runout correction magnet and the runout correction coil in the radial direction. Item 1. The optical unit with a runout correction function according to Item 1. The runout correction magnet has a rectangular parallelepiped shape, and includes a pair of first side wall surfaces extending in the optical axis direction on both sides in the circumferential direction.
The frame portion has, as the first opening, a one-sided opening extending linearly in the optical axis direction along one of the first side wall surfaces and the optical axis along the other first side wall surface. The optical unit with a runout correction function according to claim 1 or 2, wherein the other side opening extending linearly in a direction is provided. A plurality of first recesses are provided in the first magnet fixing region that overlaps with the runout correction magnet on the outer surface of the frame portion.
The optical unit with a runout correction function according to any one of claims 1 to 3, wherein an adhesive layer is interposed between the first magnet fixing region and the runout correction magnet. .. Each of the plurality of first recesses is a groove extending in the optical axis direction.
The optical unit with a shake correction function according to claim 4, wherein one end of the groove in the optical axis direction reaches the outside of the first magnet fixing region on the outer surface. A rotary support mechanism that rotatably supports the movable body around the optical axis,
It has a magnetic drive mechanism for rolling correction that rotates the movable body around the optical axis.
The gimbal mechanism supports the movable body via the rotation support mechanism by rotatably supporting the rotation support mechanism around the first axis and the second axis.
The rolling correction magnetic drive mechanism includes a rolling correction magnet arranged in the circumferential direction of the runout correction magnet and fixed to the outer surface of the frame portion, and a rolling correction magnet held by the fixed body in the radial direction. A rolling correction magnet and a rolling correction coil facing each other with a predetermined second distance are provided.
The rolling correction magnet is polarized to two poles in the circumferential direction, and its second polarization line extends in the optical axis direction.
The frame portion is provided with a second opening at a position adjacent to the rolling correction magnet in the optical axis direction.
The runout correction function according to any one of claims 1 to 5, wherein the second magnetic polarization line and the second opening overlap when viewed from the optical axis direction. Optical unit. 6. The second width dimension of the second opening in the optical axis direction is a second distance or more in which the rolling correction magnet and the rolling correction coil are separated in the radial direction. Optical unit with runout correction function described in.

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