CN114200732B

CN114200732B - Optical unit with shake correction function

Info

Publication number: CN114200732B
Application number: CN202110973818.1A
Authority: CN
Inventors: 武井宏光
Original assignee: Nidec Sankyo Corp
Current assignee: Nidec Sankyo Corp
Priority date: 2020-08-31
Filing date: 2021-08-24
Publication date: 2022-12-20
Anticipated expiration: 2041-08-24
Also published as: JP2022040523A; CN114200732A

Abstract

An optical unit with a shake correction function capable of efficiently utilizing the magnetic flux of a magnet of a shake correction magnetic drive mechanism for driving a movable body. An optical unit (1) with a shake correction function is provided with: a movable body (5) having a magnetic metal holder (16) for holding the camera module (4); a gimbal mechanism (7) that supports the movable body so as to be rotatable about a first axis (R1) and about a second axis (R2); a fixed body (8) for supporting the movable body via a gimbal mechanism; and a magnetic drive mechanism (10) for correcting shaking for rotating the movable body. The magnetic drive mechanism for shake correction is provided with a first magnet (111) fixed to a holder frame section (162) and a first coil (112) supported by a fixed body. The magnetization split line (111 c) of the first magnet extends in the circumferential direction. The holder frame portion (162) has an opening portion (166) that overlaps the magnetization polarization line when viewed in the circumferential direction at a position adjacent to the first magnet.

Description

Optical unit with shake correction function

Technical Field

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

Background

Among optical units mounted on a portable terminal or a mobile body, there is an optical unit in which a mobile body including a camera module is rotated about an optical axis, about a first axis orthogonal to the optical axis, and about a second axis orthogonal to the optical axis and the first axis, in order to suppress disturbance of a captured image when the portable terminal or the mobile body moves. Patent document 1 describes such an optical unit with a shake correction function.

The optical unit with a shake correction function of patent document 1 includes: a movable body including a camera module and a holder frame for holding the camera module from a radial outer side; a rotation support mechanism that supports the movable body so as to be rotatable about the optical axis; a gimbal mechanism; and a fixed body that supports the movable body via a gimbal mechanism and a rotation support mechanism. The movable body is disposed on the inner peripheral side of the fixed body. The rotation support mechanism includes an intermediate frame disposed between the movable body and the fixed body, and a plurality of elastic members radially spanning between the movable body and the intermediate frame. The plurality of elastic members are arranged at equal angular intervals around the optical axis, and allow the movable body to rotate around the optical axis with respect to the intermediate frame. The gimbal mechanism includes a gimbal spring, a first connecting mechanism connecting the movable body and the intermediate frame to be rotatable about a first axis, and a second connecting mechanism connecting the gimbal spring and the fixed body to be rotatable about a second axis.

The optical unit with shake correction function includes a shake correction magnetic drive mechanism for rotating the movable body about the first axis and about the second axis, and a roll correction magnetic drive mechanism for rotating the movable body about the optical axis. The magnetic drive mechanism for shake correction includes a shake correction magnet fixed to an outer surface of the holder frame and a shake correction coil supported by the fixed body and facing the shake correction magnet in a radial direction. The shake correcting magnet is polarized in two poles in the optical axis direction, and its magnetization pole line extends in the circumferential direction. The rolling correction magnetic drive mechanism includes a rolling correction magnet fixed to an outer side surface of the holder frame, and a rolling correction coil supported by the fixed body and facing the rolling correction magnet in a radial direction. The roll correction magnet is polarized in two poles in the circumferential direction, and the magnetization split line thereof extends in the optical axis direction.

Documents of the prior art

Patent literature

Patent document 1: japanese patent laid-open publication No. 2019-200270

Disclosure of Invention

Technical problems to be solved by the invention

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

However, when the holder frame is made of magnetic metal, a part of the magnetic flux of the shake correction magnet from one side of the magnetized pole-separating line to the other side is short-circuited in a region adjacent to the shake correction magnet in the circumferential direction on the holder frame. Such short-circuiting of the magnetic flux reduces the efficiency of utilizing the magnetic flux of the shake correction magnet for the driving force.

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

Technical scheme for solving technical problem

In order to solve the above-described problems, an optical unit with a shake correction function according to the present invention includes: a movable body including a camera module and a holder for holding the camera module; a gimbal mechanism that supports the movable body so as to be rotatable about a first axis that intersects an optical axis of the camera module and is rotatable about a second axis that intersects the optical axis and the first axis; a fixed body that supports the movable body via the gimbal mechanism; and a shake correction magnetic drive mechanism that rotates the movable body about the first axis and about the second axis, wherein the holder is made of magnetic metal and includes a frame portion that surrounds the camera module from a radially outer side, the shake correction magnetic drive mechanism includes a shake correction magnet fixed to an outer side surface of the frame portion and a shake correction coil supported by the fixed body and facing the shake correction magnet at a predetermined first distance in a radial direction, the shake correction magnet is polarized in two poles in the optical axis direction, a first magnetization pole line of the shake correction magnet extends in a circumferential direction, the frame portion includes a first opening provided along the shake correction magnet at a position adjacent to the shake correction magnet in the circumferential direction, and the first magnetization pole line overlaps the first opening when viewed in the circumferential direction.

According to the present invention, the movable body has the holder having the frame portion surrounding the camera module from the outside in the radial direction. The holder is made of magnetic metal, and a shake correction magnet of the shake correction magnetic drive mechanism is fixed to the outer side surface of the frame. A coil for correcting shake of the magnetic drive mechanism for correcting shake is fixed to a fixed body and faces a magnet for correcting shake in a radial direction. Thus, the holder functions as a yoke of the magnetic drive mechanism for shake correction. Therefore, it is easy to secure a driving force for driving the movable body in the magnetic drive mechanism for shake correction. The frame portion has a first opening portion that overlaps the first magnetization polarizing line when viewed in the circumferential direction at a position adjacent to the shake correction magnet in the circumferential direction. Thus, in the region of the frame portion adjacent to the shake correction magnet in the circumferential direction, a short circuit of a part of the magnetic flux of the shake correction magnet from one side of the first magnetization pole line to the other side can be prevented or suppressed. Therefore, the magnetic flux of the shake correction magnet can be efficiently used as the driving force for driving the movable body. The first opening is provided along the shake correction magnet. Therefore, if the jig for positioning is inserted into the first opening portion and the shake correction magnet is attracted to the frame portion while being in contact with the jig, the shake correction magnet can be positioned in the circumferential direction. This can improve the accuracy of the positional relationship between the shake correction magnet and the shake correction coil, and thus can more efficiently use the magnetic flux of the shake correction magnet.

In the present invention, it is preferable that a first width dimension of the first opening in the circumferential direction is equal to or greater than a first interval at which the shake correction magnet and the shake correction coil are separated from each other in the radial direction. This facilitates the magnetic flux directed from the shake correction magnet in the circumferential direction toward the shake correction coil. Therefore, it is easier to suppress the magnetic flux of the shake correction magnet from being short-circuited in the frame portion.

In the present invention, the following structure may be adopted: the shake correction magnet is rectangular parallelepiped in shape, and 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 includes, as the first opening, a first opening portion extending linearly in the optical axis direction along one of the first side wall surfaces and a second opening portion extending linearly in the optical axis direction along the other of the first side wall surfaces. Thus, short-circuiting of magnetic flux of the shake correction magnet can be prevented or suppressed on both sides of the frame portion in the circumferential direction of the shake correction magnet.

In the present invention, the following structure may be adopted: a plurality of first recesses are provided in a first magnet fixing region overlapping the shake correction magnet on an outer surface of the frame portion, and an adhesive layer is interposed between the first magnet fixing region and the shake correction magnet. In this way, the adhesive forming the adhesive layer is held by the first recess, and therefore the shake correction magnet can be firmly fixed to the frame portion.

In the present invention, the following structure may be adopted: the plurality of first concave portions are grooves extending in the optical axis direction, and one end of the grooves in the optical axis direction reaches the outside of the first magnet fixing region on the outer side surface. In this way, after the shake correction magnet is positioned and attracted to the frame portion, the adhesive can be flowed into the first recess in the optical axis direction from the one end of the shake correction magnet exposed to the outside in the first recess as the groove. Thus, the adhesive layer is formed between the first magnet fixing region and the shake correction magnet, and the shake correction magnet can be fixed to the first magnet fixing region.

In the present invention, the following structure may be adopted: comprises the following components: a rotation support mechanism that supports the movable body to be rotatable around the optical axis; and a roll correction magnetic drive mechanism that rotates the movable body about the optical axis, wherein the gimbal mechanism supports the rotation support mechanism so as to be rotatable about the first axis and about the second axis, and supports the movable body via the rotation support mechanism, and wherein the roll correction magnetic drive mechanism includes a roll correction magnet that is fixed to the outer surface of the frame portion and arranged in the circumferential direction of the shake correction magnet, and a roll correction coil that is held by the fixed body and faces the roll correction magnet at a predetermined second distance in the radial direction, the roll correction magnet is polarized in the circumferential direction into two poles, a second magnetization polarization line of the roll correction magnet extends in the optical axis direction, the frame portion includes a second opening portion at a position adjacent to the roll correction magnet in the optical axis direction, and the second magnetization polarization line overlaps the second opening portion when viewed in the optical axis direction.

In this way, the movable body can rotate about the first axis and about the second axis while being rotatable about the optical axis. This makes it possible to rotate the movable body about the optical axis, about the first axis, and about the second axis, thereby correcting the shake. The holder also functions as a yoke of a magnetic drive mechanism for roll correction that drives the movable body around the optical axis. Therefore, it becomes easy to secure the driving force for driving the movable body by the rolling correction magnetic driving mechanism. The frame portion has a second opening portion that overlaps the second magnetization polarizing line when viewed from the optical axis direction, at a position adjacent to the roll correction magnet in the optical axis direction. Accordingly, in the region of the frame portion adjacent to the roll correction magnet in the optical axis direction, a short circuit of a part of the magnetic flux of the roll correction magnet from one side of the second magnetization split line to the other side can be prevented or suppressed. Therefore, the magnetic flux of the rolling correction magnet can be efficiently used as the driving force for driving the movable body. The second opening is provided along the roll correction magnet. Therefore, if the jig for positioning is inserted into the second opening portion and the roll correcting magnet is attracted to the frame portion while being in contact with the jig, the roll correcting magnet can be positioned in the optical axis direction. This can improve the accuracy of the positional relationship between the roll correction magnet and the roll correction coil, and thus can more efficiently use the magnetic flux of the roll correction magnet.

In the present invention, it is preferable that a second width dimension of the second opening in the optical axis direction is equal to or larger than a second interval at which the rolling correction magnet and the rolling correction coil are separated in the radial direction. This facilitates the magnetic flux directed from the roll correcting magnet in the optical axis direction to the roll correcting coil. Therefore, the magnetic flux of the roll correcting magnet is more easily suppressed from being short-circuited in the frame portion.

Effects of the invention

According to the present invention, the holder to which the shake correction magnet is fixed in the movable body is made of a magnetic metal. Thus, the holder functions as a yoke of the magnetic drive mechanism for shake correction. Therefore, it is easy to secure a driving force for driving the movable body in the magnetic drive mechanism for shake correction. The frame portion of the holder has a first opening portion that overlaps a first magnetization polarizing line of the shake correction magnet when viewed in the circumferential direction, at a position adjacent to the shake correction magnet in the circumferential direction. Accordingly, in the region of the frame portion adjacent to the shake correction magnet in the circumferential direction, a short circuit of a part of the magnetic flux of the shake correction magnet from one side of the first magnetization pole line to the other side can be prevented or suppressed. Therefore, the magnetic flux of the shake correction magnet can be efficiently used as the driving force for driving the movable body. The first opening is provided along the shake correction magnet. Therefore, if the jig for positioning is inserted into the first opening portion and the shake correction magnet is attracted to the frame portion while being in contact with the jig, the shake correction magnet can be positioned in the circumferential direction. This can improve the accuracy of the positional relationship between the shake correction magnet and the shake correction coil, and thus can more efficiently use the magnetic flux of the shake correction magnet.

Drawings

Fig. 1 is a perspective view of an optical unit with correction function to which the present invention is applied.

Fig. 2 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 the 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 with the shake correction function cut in the XZ plane.

Fig. 5 is a cross-sectional view of the optical unit with the shake correction function cut along the XY plane.

Fig. 6 is a cross-sectional view of the optical unit with the shake correction function cut in a plane including the first axis and the Z axis.

Fig. 7 is a cross-sectional view of the optical unit with the shake correction function cut in a plane including the second axis and the Z axis.

Fig. 8 is a perspective view of the gimbal spring.

Fig. 9 is a plan view showing a main part of the optical unit with the shake correction function.

Fig. 10 is a perspective view of the holder, the first magnet, and the second magnet.

Fig. 11 is a perspective view of the stopper housing and the magnetic member.

Description of the reference numerals

1 \ 8230, an optical unit with a shake correction function; 2 \ 8230and lenses; 3 \ 8230and an image pickup element; 4\8230andcamera modules; 4a 8230and a camera module main body; 4b \ 8230and a lens barrel part; 5\8230amovable body; 6 \ 8230and a rotary supporting mechanism; 7\8230agimbal mechanism; 8 \ 8230and a fixed body; 9 \ 8230and an elastic support member; 10 823080, a magnetic drive mechanism for correcting shake; 11 \ 8230, a first magnetic drive mechanism for shake correction; 12 \ 8230and a second magnetic drive mechanism for shake correction; 13 8230a magnetic driving mechanism for rolling correction; 14\8230andflexible printed substrate; 15 8230a flexible printed substrate for power supply; 16 \ 8230and a retainer; 16a \8230andthe end face of the retainer; 20 \ 8230and a cover bottom; 23 \ 8230and a second elastic clamping part; 24 \ 8230and a second clamping part; 25 \ 8230and a circular hole; 26 \ 8230and a third elastic clamping part; 27 \ 8230and clamping holes; 30 \ 8230a frame shell; 31\8230anda rectangular frame part; 32 \ 8230and a first longitudinal frame part; 33 \ 8230and a second longitudinal frame part; 34. 36 \ 8230a plate part; 35. 38 \ 8230a protrusion; 36a \ 8230a through hole; 37 \ 8230and protuberance; 39\8230thesecond shaft side tube part; 40, 8230and a stopper housing; 40A 8230a main body part; 41 \ 8230a first housing wall; 42 \ 8230and a second housing wall; 43 \ 8230and a third housing wall; 44 8230while the end plate part; 45A 8230and a first shell bulge; 45a 8230and an extending part; 45b 823060%, curved part; 45B 8230and a second shell bulge; 46 \ 8230a hook; 46a, 8230a opening part; 47 \ 8230and grooves; 48 \ 8230, the magnetic component is provided with a concave part; 49 \ 8230and clamping holes; 50 8230, FPC cover; 52 8230a hook part; 53 \ 8230a stop part; 54\8230awelding mark; 56 \ 8230and a second axial lateral projection; 60 \ 8230and a main body part; 61 \ 8230a shaft part; 62 \ 8230and a bearing mechanism; 63\8230aplate retainer; 64 \ 8230a magnet; 65 \ 8230and a plate retainer cylinder part; 66 \ 8230a plate retainer ring part; 67 \ 8230a plate retainer extension part; 68 \ 8230and a first shaft side concave part; 70 8230a gimbal spring; 71 \ 8230a first connecting mechanism; 72 \ 8230and a second connecting mechanism; 73 \ 8230a, an arm; 74 \ 8230and a first connecting part; 74a 8230a first end portion; 74b 8230a first central portion; 74c 8230a through hole; 75 \ 8230and a second connecting part; 75a 8230and a second end portion; 75b 8230a second central portion; 77 \ 8230, a first shaft side tube part; 78 \ 8230a pair of protrusions; 79' \ 8230a second shaft side concave part; 80 \ 8230and a first axial lateral projection; 111 \ 8230a first magnet; 111a 8230, a first side wall; 111b 8230and a second side wall; 111c 8230and magnetized separator line; 112 \ 8230and a first coil; 113 \ 8230a first magnetic component; 116, 8230opening; 121, 8230a second magnet; 121a \ 8230and a first side wall surface; 121b \8230anda second side wall surface; 121c 8230magnetic separating line; 122 \ 8230and a second coil; 123' \ 8230a second magnetic component; 131 \ 8230a magnet for rolling correction; 131a \ 8230and a first side wall surface; 131b 8230a pair of second side surfaces; 131c (8230); magnetizing the wire; 132 \ 8230and a coil for rolling correction; 151 \ 8230and a first coil fixing part; 152 \ 8230and a second coil fixing part; 153\8230anda third coil fixing part; 160 \ 8230and a gap part; 161 8230and the bottom of the retainer; 162 8230and a retainer frame part; 162a \8230anda magnet fixing area; 162b 8230and a magnet fixing area; 162c 8230and a magnet fixing area; 163% -8230, a camera module accommodating concave part; 163a 8230and an opening part of a retainer; 164 \ 8230a concave part; 165: 8230and an adhesive layer; 166' \ 8230a peristome; 166 a' \ 8230, a side opening part; 166b 8230and an opening part at the other side; 167 \ 8230and an opening part; 167a \8230, one side opening part; 167b, 8230and an opening part at the other side; 168 \ 8230a mouth part; 440, 8230a shell positioning hole; 610 \ 8230and a step part; 621, 8230a inner ring; 622 \ 8230a outer ring; 623 \ 8230and a sphere; 624 \ 8230a retainer; 710 8230a first shaft side shaft; 720% -8230and a second shaft side shaft; 731 \ 8230a first inclined portion; 732, 8230a second angled portion; 733 \ 8230and a connecting part; 734 \ 8230and a bent part; 761 8230a protrusion; 762\8230acurved part; 763 8230a straight line part

Detailed Description

Next, an embodiment 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 the 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 the 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 the shake correction function cut in the XZ plane. Fig. 5 is a cross-sectional view of the optical unit 1 with the shake correction function cut in the XY plane. Fig. 6 is a cross-sectional view of the optical unit 1 with the shake correction function cut on a plane including the first axis R1 and the Z axis. Fig. 7 is a cross-sectional view of the optical unit 1 with the shake correction function, cut on 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 shake correction function.

The optical unit 1 with a shake correction function includes a camera module 4 including a lens 2 and an imaging element 3. The optical unit 1 with a shake correction function is used for optical devices such as a camera-equipped mobile phone and a drive recorder, or optical devices such as a motion camera and a wearable camera mounted on a mobile body such as a helmet, a bicycle, and a remote-controlled helicopter. In such an optical apparatus, if a shake of the optical apparatus occurs at the time of shooting, a captured image may be disturbed. The optical unit 1 with shake correction function corrects the tilt of the camera module 4 based on the acceleration, angular velocity, shake amount, and the like detected by a detection unit such as a gyroscope to avoid the tilt of the captured image.

The optical unit 1 with a shake correction function performs shake correction by rotating the camera module 4 around the optical axis L, around a first axis R1 orthogonal to the optical axis L, and around a second axis R2 orthogonal to the optical axis L and the first axis R1. The optical axis L is an 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, three axes orthogonal to each other are 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 an intersection of the first axis R1 and the second axis R2. 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 axis and passes through an intersection of the first axis R1 and the second axis R2. The Y axis intersects the first axis R1 and the second axis R2 at an angle of 45 °. Therefore, when a plane including the X axis and the Y axis is an XY plane, the first axis R1 and the second axis R2 are located on the XY plane. The first axis R1 and the second axis R2 are inclined by 45 ° about the Z axis with respect to the X axis and the Y axis.

In the following description, directions along the X, Y, and Z axes are referred to as X, Y, and Z axes. One side in the X-axis direction is set as the-X direction, and the other side is set as the + X direction. One side in the Y axis direction is defined as the-Y direction, the other side is defined as the + Y direction, one side in the Z axis direction is defined as the-Z direction, and the other side is defined as the + Z direction. the-Z direction is the object side opposite to the camera module 4, and the + Z direction is the object side of the camera module 4. The direction along the first axis R1 is referred to as a first axis R1 direction, and the direction along the second axis R2 is referred to as a second axis R2 direction. The direction around the Z axis, that is, the direction around the optical axis L is referred to as the circumferential direction. The radial direction is a direction centered on the Z axis.

As shown in fig. 1 and 2, the optical unit 1 with shake correction function includes a movable body 5 and a rotation support mechanism 6, the movable body 5 includes a camera module 4, and the rotation support mechanism 6 supports the movable body 5 rotatably about an optical axis L. Therefore, the movable body 5 can rotate in the ROLL direction ROLL around the optical axis L.

The optical unit 1 with shake correction function includes a gimbal mechanism 7 that rotatably supports the rotation support mechanism 6 about the first axis R1 and rotatably supports the rotation support mechanism about the second axis R2, and a fixed body 8 that supports the movable body 5 via the gimbal mechanism 7 and the rotation support mechanism 6. Therefore, the movable body 5 is supported via the gimbal mechanism 7 so as to be rotatable about the first axis R1 and also rotatable about the second axis R2.

Here, the movable body 5 can rotate in the YAW direction YAW about the X axis and the PITCH direction PITCH about the Y axis by combining the rotation about the first axis R1 and the rotation about the second axis R2. Therefore, the gimbal mechanism 7 is a rotation support mechanism that supports the movable body 5 via the rotation support mechanism 6 so as to be rotatable about the X axis and about the Y axis. The intersection of the optical axis L, X-axis, and Y-axis is the same as the intersection of the optical axis L, first axis R1, and second axis R2, and is located inside movable body 5.

The optical unit 1 with the shake correction function further includes a flexible printed circuit board 14 connected to the movable body 5. As shown in fig. 4 and 5, the flexible printed circuit board 14 is drawn out from the movable body 5 in the + X direction. The flexible printed board 14 is drawn out of the fixing body 8, and is connected to a board or the like of an optical device on which the optical unit 1 with a shake correction function is mounted via a connector not shown.

As shown in fig. 5, the optical unit 1 with shake correction function includes a shake correction magnetic drive mechanism 10 for rotating the movable body 5 about the first axis R1 and about the second axis R2. The magnetic drive mechanism 10 for blur correction includes a first magnetic drive mechanism 11 for blur correction that generates a driving force about the X axis with respect to the movable body 5, and a second magnetic drive mechanism 12 for blur correction that generates a driving force about the Y axis with respect to the movable body 5. As shown in fig. 2, 3, and 5, the first magnetic drive mechanism for blur correction 11 includes a first magnet 111 and a first coil 112 disposed in the-Y direction of the movable body 5. The second magnetic drive mechanism 12 for shake correction includes a second magnet 121 and a second coil 122 disposed in the-X direction of the movable body 5.

As shown in fig. 2, 3, and 5, the optical unit 1 with shake correction function includes a rolling correction magnetic drive mechanism 13 for rotating 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 disposed in the + Y direction of the movable body 5. The optical unit 1 with shake correction function includes a flexible printed circuit board 15 for supplying power to the shake correction magnetic drive mechanism 10 and the roll correction magnetic drive mechanism 13. The flexible printed board 15 is mounted on 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 fig. 2 to 5, the movable member 5 includes the 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 as 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 is held in the barrel portion 4b (see fig. 4). 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 fig. 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 accommodated in a camera module accommodating recess 163 defined by the holder bottom portion 161 and the holder frame portion 162. The camera module accommodating recess 163 includes a holder opening 163a facing 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 board 14 is connected to the image pickup device 3 disposed inside the camera module 4, and is drawn out in the + X direction of the movable body 5 through the notch 160.

The holder bottom 161 is plate-shaped. When the camera module 4 is held to the holder 16, the-Z direction end face of the holder bottom 161, i.e., the-Z direction end face 16a of the holder 16, is perpendicular to the optical axis L. A shaft portion 61 protruding in the-Z direction is provided at the center of the holder bottom portion 161. The shaft portion 61 is formed on the retainer 16 by a knurling process. When the camera module 4 is held by the holder 16, the shaft portion 61 is coaxial with the optical axis L.

As shown in fig. 10, a first magnet 111 (shake correction magnet) is fixed to the outer surface of the holder frame portion 162 in the-Y direction. A second magnet 121 (shake correction magnet) is fixed to an outer surface of the holder frame portion 162 in the-X direction. Further, the roll correction magnet 131 is fixed to the outer side surface in the + Y direction of the holder frame portion 162.

The first magnet 111 has a rectangular parallelepiped shape, and includes 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. The second side wall surface 111b of the pair of second side wall surfaces 111b located in the-Z direction is at the same height position in the Z-axis direction as the end surface 16a of the holder 16 in the-Z direction. The first magnet 111 is polarized and magnetized in two poles in the Z-axis direction. Therefore, the magnetization polarization line 111c (first magnetization 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 is rectangular parallelepiped and includes 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. The second side wall surface 121b of the pair of second side wall surfaces 121b located in the-Z direction is at the same height position in the Z-axis direction as the end surface 16a of the holder 16 in the-Z direction. The second magnet 121 is polarized and magnetized into two poles in the Z-axis direction. Therefore, the magnetization polarization line 121c (first magnetization polarization line) of the second magnet 121 extends in the circumferential direction.

Here, a plurality of recesses 164 are provided in a magnet fixing region 162a (first magnet fixing region) overlapping the first magnet 111 on the outer surface of the holder frame portion 162 in the-Y direction. Further, adhesive layer 165 is interposed between magnet fixing region 162a and first magnet 111. In this example, each of the plurality of concave portions 164 is a groove extending linearly in the Z-axis direction. The width of each groove was 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 outside surface of the holder frame portion 162 in the-Y direction. Therefore, when the first magnet 111 is disposed in the magnet fixing region 162a, the end of the recess 164 in the + Z direction is located at the position closer to the + Z direction than 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 respective first side wall surfaces 111a on both sides in the circumferential direction of the first magnet 111. More specifically, the holder frame portion 162 includes, as the opening portion 166, a first opening portion 166a extending along the first side wall surface 111a at a position adjacent to the first side wall surface 111a in the circumferential direction of the first magnet 111, and a second opening portion 166b extending along the second side wall surface 111a at a position adjacent to the second side wall surface 111 a. The one side opening 166a and the other side opening 166b extend linearly in the Z-axis direction with a constant width dimension D1. The magnetization polarizing line 111c of the first magnet 111 overlaps the openings 166a and 166b when viewed in the circumferential direction.

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

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

Next, the roll correction magnet 131 has a rectangular parallelepiped shape, and includes 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 wall surfaces 131b extending in the Z-axis direction on both sides in the circumferential direction. The first side surface of the pair of first side wall surfaces 131a in the-Z direction is located closer to the-Z direction than the end surface 16a of the holder 16 in the-Z direction. The roll correcting magnet 131 is magnetized in two poles in the circumferential direction. Therefore, the magnetization polarization line 131c (second magnetization polarization line) of the roll correcting magnet 131 extends in the Z-axis direction.

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

Further, the frame portion in the + Y direction of the holder frame portion 162 includes an opening portion 168 (second opening portion) 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 linearly extends in the circumferential direction with a constant width dimension D2. When viewed from the Z-axis direction, the magnetization polarizing line 131c of the roll correcting magnet 131 overlaps the opening 168. The end of the recess 164 in the + Z direction reaches the opening 168. Therefore, the recess 164 communicates with the opening 168.

Here, when the first magnet 111 is fixed to the holder 16, a jig for positioning 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 second side wall surface 111b of the first magnet 111 in the-Z direction and the end surface 16a of the holder 16 in the-Z direction are arranged on the same plane by a jig or the like. Thereby, 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, an adhesive is applied to the outer surface of the holder frame portion 162 and the boundary portion in the + Z direction of the first magnet 111. Thus, the adhesive enters the recess 164 from the end of the recess 164 in the + Z direction closer to the + Z direction than the first magnet 111, and reaches the magnet fixing region 162a. Therefore, adhesive layer 165 is formed between holder frame portion 162 and first magnet 111. First magnet 111 is fixed to the outer surface of holder frame 162 with adhesive layer 165.

When the roll correcting magnet 131 is fixed to the holder 16, a jig for positioning is inserted into the opening 168, and the roll correcting magnet 131 is attracted to the holder frame portion 162 while contacting the jig. Thereby, the rolling correction magnet 131 is held by the holder 16 in a state of being positioned in the Z-axis direction. Next, an adhesive is applied to the opening edge of the opening 168 formed in the + Z direction of the rolling correction magnet 131. Thereby, the adhesive enters the recess 164 from the end of the recess 164 in the + Z direction 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 roll correcting magnet 131. The roll correction magnet 131 is fixed to the outer surface of the holder frame 162 via an adhesive layer 165.

(stationary body)

Fig. 11 is a perspective view of the frame housing, the stopper housing, the first magnetic member, and the second magnetic member. As shown in fig. 1 to 5, fixed body 8 includes a cover bottom 20 covering movable body 5 and flexible printed circuit board 14 from the-Z direction, a frame case 30 fixed to cover bottom 20 from the + Z direction and surrounding the diagonal direction of movable body 5, and a stopper case 40 surrounding frame case 30 and the outer peripheral side of movable body 5. The cover bottom 20, the frame case 30, and the stopper case 40 are made of nonmagnetic metal.

The cover bottom 20 is a sheet metal member having a plate thickness of 0.15mm, for example, and is manufactured by press working. The frame casing 30 is, for example, a sheet metal member having a plate thickness of 0.30mm, and is manufactured by press working. The frame casing 30 is thicker than the cover bottom 20. The plate thickness of the stopper housing 40 is equal to the plate thickness of the cover bottom 20, and the stopper housing 40 is manufactured by press drawing. The stopper housing 40 surrounds the movable body 5 from three directions of-X direction, -Y direction and + Y direction.

As shown in fig. 2, 3, and 5, the fixed body 8 includes an FPC cover 50 surrounding the outer peripheral side of the flexible printed circuit 14 drawn 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 FPC cover 50 includes a hook portion 52 (see fig. 3 and 5) fitted into the rectangular frame portion 31 of the frame housing 30 at an end portion in the-X direction. The hook portion 52 is fitted into the rectangular frame portion 31 from the + Z direction, and the end portion of the FPC cover 50 in the-X direction is locked to the frame housing 30. Further, a locking portion 53 is formed on each of the-Y direction side surface and the + Y direction side surface of the-X direction end of the FPC cover 50. The stopper housing 40 has an engagement hole 49 at the end in the + X direction, which engages with the engagement portion 53. Further, the stopper housing 40 includes engaging holes 27 on the side surface in the-X direction, and the engaging holes 27 are engaged with the third elastic engaging portions 26 at two locations rising from the edge in the-X direction of the cover bottom 20 in the + Z direction (see fig. 3).

As shown in fig. 5, the flexible printed substrate 15 is circumferentially threaded along the inner surface of the stopper housing 40. As shown in fig. 2, 3, and 5, the flexible printed circuit board 15 includes a first coil fixing portion 151 extending in the X-axis direction along the side surface in the-Y direction of the stopper housing 40, a second coil fixing portion 152 extending in the Y-axis direction along the side surface in the-X direction of the stopper housing 40, and a third coil fixing portion 153 extending in the X-axis direction along the side surface in the + Y direction of the stopper housing 40. 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 shake correction magnetic drive mechanism 11 is fixed to the first coil fixing portion 151, and the second coil 122 of the second shake correction magnetic drive mechanism 12 is fixed to the second coil fixing portion 152. Further, the roll correction coil 132 is fixed to the third coil fixing portion 153. The first coil 112, the second coil 122, and the roll correction coil 132 are electrically connected to the flexible printed circuit board 15. The first coil 112, the second coil 122, and the roll correction coil 132 are fixed to the stopper housing 40 via the flexible printed circuit board 15.

As shown in fig. 2, 3, 5, and 11, the stopper housing 40 includes a main body portion 40A surrounding the movable body 5 in three directions, and an end plate portion 44 protruding inward from the + Z direction edge of the main body portion 40A. The main body portion 40A includes a first housing wall 41 extending in the X-axis direction in the-Y direction of the movable body 5, a second housing wall 42 extending in the Y-axis direction in the-X direction of the movable body 5, and a third housing wall 43 extending in the X-axis direction in the + Y direction of the movable body 5. The end plate portion 44 includes a first case projection 45A projecting from a diagonal position in the first axis R1 direction toward the inner peripheral side and a second case projection 45B projecting from a diagonal position in the second axis R2 direction toward the inner peripheral side. The first case projection 45A includes an extension 45A extending from the end plate 44 toward the inner peripheral side and a bent portion 45b bent and extending from the inner peripheral end of the extension in the-Z direction. The end plate portion 44 includes housing positioning holes 440 for positioning the frame housing 30 at two locations on the first axis R1 and two locations on the second axis R2, respectively.

The stopper housing 40 includes a hook 46 (see fig. 2, 3, and 4) for locking the edge of the flexible printed board 15 in the-Z direction and a recessed groove 47 (see fig. 3) for locking the edge of the flexible printed board 15 in the + Z direction. The hooks 46 are formed at one location in the circumferential center of each of the first housing wall 41, the second housing wall 42, and the third housing wall 43. The concave grooves 47 are formed at two positions on the-Y-direction edge, the-X-direction edge, and the + Y-direction edge of the end plate portion 44, respectively. The first coil fixing portion 151, the second coil fixing portion 152, and the third coil fixing portion 153 are positioned by the hook 46 being locked at the edge in the-Z direction and the recess 47 being locked at the edge in the + Z direction, respectively, and are fixed to the stopper housing 40 by an adhesive.

As shown in fig. 3 and 11, the first housing wall 41, the second housing wall 42, and the third housing wall 43 include a magnetic member arrangement recess 48 in the circumferential center of the outer side surfaces thereof. The magnetic member arrangement recess 48 extends linearly in the optical axis direction with a constant width.

As shown in fig. 5 and 11, the first magnetic member 113 is disposed in the magnetic member disposition recess 48 provided in the first housing 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 M of the first magnetic member 113 in the Z-axis direction is shorter than the length N of the magnetic member arrangement recess 48 in the Z-axis direction. The length M of the first magnetic member 113 in the Z-axis direction is longer than the length 0 of the first magnet in the Z-axis direction shown in fig. 10. 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 disposed in the magnetic member disposition recess 48, the first magnetic member 113 does not protrude to the outer peripheral side from the magnetic member disposition recess 48.

A welding trace 54 for fixing the first magnetic member 113 to the first housing wall 41 is provided in the magnetic member arrangement recess 48. That is, the first magnetic member 113 is fixed to the first housing wall 41 by welding. The first magnetic member 113 constitutes a magnetic spring for positioning the movable body 5 to an original position in the shake correction around the X axis together with the first magnet 111 held by the movable body 5.

In addition, the second magnetic member 123 is disposed in the magnetic member disposition recess 48 provided in the second housing 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 includes two parallel sides extending linearly in the Z-axis direction. The length M of the second magnetic member in the Z-axis direction is shorter than the length N of the magnetic member arrangement recess 48 in the Z-axis direction. Further, a length dimension M of the second magnetic member in the Z-axis direction is longer than a length dimension O of the second magnet in the Z-axis direction. 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 disposed in the magnetic member disposition recess 48, the second magnetic member 123 does not protrude to the outer peripheral side from the magnetic member disposition recess 48.

A weld mark 54 for fixing the second magnetic part 123 to the second housing wall 42 is provided in the magnetic part arrangement recess 48. That is, the second magnetic part 123 is fixed to the second housing wall 42 by welding. The second magnetic member 123 constitutes a magnetic spring for positioning the movable body 5 to an original position in shake correction around the Y axis together with the second magnet 121 held by the movable body 5.

Here, as shown in fig. 3, the hook 46 is a cut-and-raised portion that cuts and raises the bottom of the magnetic member arrangement recess 48 toward the inner peripheral side. Therefore, the portion of the bottom of the magnetic member placement recess 48 that cuts the hook 46 is the opening 46a. The opening portion 46a is used as an adhesive applying hole for flowing an adhesive for fixing between the flexible printed substrate 15 and the stopper housing 40 after positioning the flexible printed substrate 15 to the stopper housing 40.

As shown in fig. 2 and 3, the frame case 30 includes a rectangular frame portion 31 abutting against the cover bottom 20 from the + Z direction, a pair of first vertical frame portions 32 rising from diagonal positions in the first axis R1 direction of the rectangular frame portion 31 in the + Z direction, and a pair of second vertical frame portions 33 rising from diagonal positions in the second axis R2 direction of the rectangular frame portion 31 in the + Z direction. The first and second

vertical frames

32 and 33 include second locking portions 24, and the second locking portions 24 lock the second elastic engagement portions 23 provided at four positions of the cover bottom 20, namely, a diagonal position in the first axis R1 direction and a diagonal position in the second axis R2 direction. The frame housing 30 is fixed to the cover bottom 20 by locking the second elastic engagement portion 23 to the second locking portion 24.

As shown in fig. 2 and 3, each of the pair of first vertical frame portions 32 includes a plate portion 34 extending in the + Z direction and two protrusions 35 protruding from edges on both sides in the width direction of the plate portion 34. The pair of second vertical frame portions 33 includes a plate portion 36 extending in the + Z direction, a pair of protrusions 37 protruding from substantially the center in the Z-axis direction of the edges on both sides in the width direction of the plate portion 36, and four protrusions 38 protruding from the edges on both sides in the width direction of the plate portion 36 in the + Z direction and the-Z direction of each protrusion 37. The

projections

35, 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 housing 40.

As shown in fig. 1 and 6, the pair of first vertical frame portions 32 insert the + Z-direction front ends of the plate portions 34 into the case positioning holes 440 of the stopper case 40. As shown in fig. 1 and 7, the pair of second vertical frame portions 33 insert the front ends of the plate portions 36 in the + Z direction into the case positioning holes 440 of the stopper case 40. In the present embodiment, the front ends of the

plate portions

34, 36 are fixed to the stopper housing 40 by welding.

Here, as shown in fig. 7, each second vertical frame portion 33 is provided with a second shaft side protrusion 56 that protrudes toward the movable body 5 side on the second shaft R2. Specifically, each of the second vertical frame portions 33 includes a through hole 36a penetrating the plate portion 36 in the second axis R2 direction and a second axis side tube portion 39 protruding from an opening edge of the through hole 36a of the plate portion 36 toward the inner periphery in the second axis R2 direction. A second shaft-side shaft 720 having a cylindrical shape is held in the through hole 36a and the second shaft-side tube portion 39. The end portion on the inner peripheral side of the second shaft 720 is a second shaft protrusion 56 protruding from the plate 36 toward the movable body 5. The distal end portion of the second axial protrusion 56 has a hemispherical surface. As will be described later, the second axial protrusion 56 constitutes a second connection mechanism 72 of the gimbal mechanism 7. Here, the pair of projections 37 are provided on both sides in the circumferential direction of the second shaft side tube portion 39.

(rotation supporting mechanism)

As shown in fig. 4, 6, and 7, the rotation support mechanism 6 includes a shaft portion 61 protruding from the movable body 5 in the-Z direction, a plate holder 63 supported by the gimbal mechanism 7 and rotating about the first axis R1 and the second axis R2, and a bearing mechanism 62 rotatably supporting the shaft portion 61 on the plate holder 63. As shown in fig. 3, the rotation support mechanism 6 includes an attracting magnet 64 that is fixed to the plate holder 63 and attracts the holder to the plate holder 63 side. The shaft portion 61 of the movable body 5 is coaxial with the optical axis L.

The plate holder 63 is made of a nonmagnetic metal. As shown in fig. 6, the plate holder 63 includes a plate holder tube portion 65 surrounding the shaft portion 61, a plate holder annular portion 66 extending outward from an end portion of the plate holder tube portion 65 in the + Z direction, and a pair of plate holder extending portions 67 protruding from the plate holder annular portion 66 on both sides in the first axis R1 direction and bent in the + Z direction. 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, balls 623 rolling between the inner ring 621 and the outer ring 622, and a retainer 624 holding the balls 623 in a ring shape so as to be capable of rolling. The attracting magnet 64 is annular and fixed to the surface of the plate holder annular portion 66 opposite to the holder 16. The attracting magnet 64 is thinner than the bearing mechanism 62 in the Z-axis direction. The attracting magnet 64 is magnetized in a plurality of poles by polarization 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 face 16a of the holder 16 in the-Z direction with a constant gap. The attracting magnet 64 is located radially outward of the bearing mechanism 62 and located inward of the bearing mechanism 62 when viewed in a direction orthogonal to the Z-axis.

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

(elastic support Member)

As shown in fig. 2, the cover bottom 20 includes a circular hole 25 having the optical axis L as the center. Cylindrical elastic support members 9 are disposed at two locations facing each other in 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 rotation support mechanism 6 via the plate holder 63 of the rotation support mechanism 6 disposed at the bottom of the movable body 5 (see fig. 6). The elastic support member 9 is configured to: by applying the load of the movable body 5 and the rotation support mechanism 6, the height in the Z-axis direction between the plate holder 63 and the cover bottom 20 becomes a compression ratio of about 10%. The elastic support member 9 is fixed to the cover bottom 20 but not to the plate holder 63.

The elastic support members 9 are disposed symmetrically with respect to the optical axis L and fixed to the cover bottom 20. In the present embodiment, since the center of gravity of the movable body 5 is located on the optical axis, the elastic support members 9 are symmetrically arranged with respect to the center of gravity of the movable body 5. Therefore, by receiving the load of the movable body 5 and the rotation support mechanism 6 with the elastic support member 9, the positional accuracy when positioning the movable body 5 to the origin position for shake correction can be improved. Further, since the low hardness rubber is a vibration-proof material, impact resistance can be improved when an impact due to dropping or the like is applied.

(gimbal mechanism)

As shown in fig. 2 to 5, the gimbal mechanism 7 includes gimbal springs 70, a first connection mechanism 71, and a second connection mechanism 72. The first connection mechanism 71 connects the gimbal spring 70 and the plate holder 63 to be rotatable about the first axis R1. The second connection mechanism 72 connects the gimbal spring 70 and the fixed body 8 to be rotatable about the second axis R2. In this example, the second connection mechanism 72 connects the gimbal spring 70 and the frame housing 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. Thereby, the movable body 5 can rotate about an intersection point where the optical axis L, the first axis R1, and the second axis R2 intersect.

The gimbal spring 70 is a metal plate spring. The gimbal spring 70 is frame-shaped, and surrounds the movable body 5 from the outer peripheral side. As shown in fig. 8, gimbal spring 70 includes a pair of first connection portions 74 located on both sides of movable body 5 in the first axis R1 direction, a pair of second connection portions 75 located on both sides of movable body 5 in the second axis R2 direction, and four arm portions 73 connecting circumferentially adjacent first connection portions 74 and second connection portions 75 on the outer peripheral side of movable body 5.

Each first connecting portion 74 is plate-shaped, and its thickness direction is oriented in the first axis R1 direction. Each of the second connecting portions 75 is plate-shaped, and its thickness direction is directed in the second axis R2 direction. Each arm portion 73 connects a first end portion 74a on the second connecting portion 75 side at the + Z direction end edge of the first connecting portion 74 and a second end portion 75a on the first connecting portion 74 side at the + Z direction end edge of the second connecting portion 75. Here, the two arm portions 73 extending from the respective first connecting portions 74 to both sides in the circumferential direction are separated in the circumferential direction. Therefore, each first connection portion 74 includes a first central portion 74b of the unconnected arm portion 73 at the center in the circumferential direction of the end edge in the + Z direction. Similarly, the two arm portions 73 extending from the respective second connecting portions 75 to both sides in the circumferential direction are separated in the circumferential direction. Therefore, each second connection portion 75 includes a second central portion 75b of the unconnected arm portion 73 at the center in the circumferential direction of the end edge in the + Z direction.

Each arm portion 73 includes: a first inclined portion 731 that is inclined toward the second connection portion 75 side in the circumferential direction so as to face the + Z direction from the first end portion 74a of the first connection portion 74; a second inclined portion 732 inclined in the circumferential direction toward the first connection portion 74 side so as to face the + Z direction from the second end portion 75a of the second connection portion 75; and a connection portion 733 connecting the + Z-direction end portion of the first inclined portion 731 and the + Z-direction end portion of the second inclined portion 732.

The connecting portions 733 of the three arm portions 73 located in the-X direction, -Y direction, and + Y direction of the movable body 5 among the four arm portions 73 extend in the circumferential direction between 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 bent portion 734 that is recessed in the-Z direction is provided at the circumferential center portion of the connection 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 avoiding interference with the flexible printed circuit board 14 extending in the + X direction from the movable body 5. Specifically, the connection portion 733 includes a pair of protruding portions 761 that are bent in the + X direction and extend from the + Z direction end portion of the first inclined portion 731 and the + Z direction end portion of the second inclined portion 732, a pair of bent portions 762 that are bent in the-Z direction from the + X direction end of each protruding portion 761 and extend in the Z axis direction, and a straight portion 763 that extends linearly in the Y axis direction and connects the-Z direction ends of the pair of bent portions 762. The connection portion 733 of the arm portion 73 located in the + X direction of the movable body 5 may be set to extend in the circumferential direction as in the connection portion 733 of the other arm portion 73, as long as it does not interfere with the flexible printed circuit board 14.

Here, as shown in fig. 6, each first connection portion 74 is provided with a first shaft side protrusion 80 that protrudes toward the movable body 5 side on the first shaft R1. Specifically, the first connection portion 74 includes a through hole 74c that penetrates along the first axis R1 and a first axis side tube portion 77 that protrudes outward from an opening edge of the through hole 74c of the first connection portion 74. The through hole 74c and the first shaft side tube portion 77 hold a cylindrical first shaft side shaft 710. The end portion on the inner peripheral side of the first shaft side 710 is a first shaft side protrusion 80 that protrudes radially inward from the first shaft side tube portion 77. The first axial protrusion 80 has a hemispherical surface at the inner circumferential end. As shown in fig. 8, the pair of first connection portions 74 are provided with a pair of projections 78 that project inward on both sides in the circumferential direction of the first shaft side tube portion 77.

The first connection mechanism 71 is configured such that a hemispherical surface provided at the distal end portion of the first shaft-side protrusion 80 is in point contact with a concave curved surface of the first shaft-side concave portion 68 provided at the distal end of the plate holder extension 67. When the first connection mechanism 71 is configured, the plate holder 63 is supported by the gimbal spring 70 in a rotatable state about the first axis R1. In a state where the first axial protrusion 80 is supported by the first axial recess 68, the pair of plate holder extending portions 67 are flexed toward the inner peripheral side, and elastically contact the first axial protrusion 80 from the inner peripheral side.

When the first connection mechanism 71 is configured, the rotation support mechanism 6 is supported by the gimbal mechanism 7 to be rotatable about the first axis R1. When the first connection mechanism 71 is configured, the board holder extension portion 67 is disposed between the pair of projections 78 as shown in fig. 5. The pair of projections 78 are anti-disengagement portions that restrict the plate holder extension portion 67 from disengaging from the first connection portion 74 in the Z-axis direction.

As shown in fig. 5 and 7, each of the pair of second connecting portions 75 includes a second shaft side recessed portion 79 recessed inward on the second shaft R2. The second axial recessed portion 79 has a concave curved surface. The second connecting mechanism 72 is configured such that the hemispherical surface of the second shaft side protrusion 56 provided on each of the second vertical frame portions 33 of the frame housing 30 is in point contact with the concave curved surface of the second shaft side concave portion 79. When the second connection mechanism 72 is configured, the gimbal spring 70 is supported by the fixed body 8 so as to be rotatable about the second axis R2. In a state where the second shaft side concave portion 79 is supported by the second shaft side protruding portion 56, the pair of second connecting portions 75 are flexed toward the inner peripheral side, and elastically contact the second shaft side protruding portion 56 from the inner peripheral side.

When the second connection mechanism 72 is configured, the gimbal mechanism 7 is supported by the fixed body 8 so as to be rotatable about the second axis R2. When the second connection mechanism 72 is configured, as shown in fig. 5, the distal ends of the pair of second connection portions 75 are disposed between the pair of protrusions 37 provided in the second vertical frame portion 33 of the frame case 30. The pair of protrusions 37 are anti-disengagement portions that restrict disengagement of the second connection portion 75 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 main body portion 40A of the fixed body 8, that is, the main body portion 40A of the stopper housing 40 is located radially outward of the movable body 5 and the gimbal spring 70. As shown in fig. 4, 6, and 7, the gimbal spring 70 and the holder 16 are located outside the camera module main body 4a in the radial direction at a position closer to the-Z direction than the + Z direction end surface of the camera module main body 4 a. The fixed body 8 is located further toward the-Z direction than the + Z direction end surface of the camera module main body 4a on the radially outer side of the movable body 5. Therefore, the movable body 5 and a part of the gimbal mechanism 7 in the + Z direction protrude from the stopper housing 40 in the + Z direction.

(magnetic drive mechanism for shake correction and magnetic drive mechanism for roll 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 fixed to the side surface of the movable body 5 in the-Y direction and the first coil 112 fixed to the stopper housing 40 are opposed to each other in the radial direction. Thus, the first magnet 111 and the first coil 112 constitute the first magnetic drive mechanism 11 for blur correction. Therefore, power is supplied to first coil 112, and movable body 5 rotates about the X axis. Here, in the Y axis direction, a distance E1 (first distance) separating the first magnet 111 and the first coil 112 is shorter than a width dimension D1 (see fig. 10) in the circumferential direction of the opening portion 166 provided in the holder frame portion 162 beside the first magnet 111 in the circumferential direction.

When the movable body 5 is supported by the fixed body 8 via the gimbal mechanism 7 and the rotation support mechanism 6, the second magnet 121 fixed to the side surface of the movable body 5 in the-X direction and the second coil 122 fixed to the stopper case 40 are opposed to each other in the radial direction. Thus, the second magnet 121 and the second coil 122 constitute the second shake correction magnetic drive mechanism 12. Therefore, by supplying power to second coil 122, movable body 5 rotates about the Y axis. Here, in the X axis direction, a distance E2 (first distance) separating the second magnet 121 and the second coil 122 is shorter than a width dimension D1 (see fig. 10) in the circumferential direction of the opening 167 provided beside the second magnet 121 in the circumferential direction of the holder frame portion 162.

When the movable body 5 is supported by the fixed body 8 via the gimbal mechanism 7 and the rotation support mechanism 6, the rolling correction magnet 131 fixed to the + Y direction side surface of the movable body 5 and the rolling correction coil 132 fixed to the stopper case 40 are opposed to each other in the radial direction. Thus, the roll correction magnet 131 and the roll correction coil 132 constitute the roll correction magnetic drive mechanism 13. Therefore, the movable body 5 is rotated around the optical axis L by supplying power to the roll correction coil 132. Here, as shown in fig. 3 and 10, the distance E3 (second distance) separating the first magnet 111 and the first coil 112 in the Y-axis direction is shorter than the width D2 in the Z-axis direction of the opening 168 provided in the holder frame portion 162 beside the rolling correction magnet 131 in the + Z direction.

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 arrangement recess 48 of the stopper housing 40 overlaps the magnetization polarization line 111c of the first magnet 111 when viewed in the radial direction. Similarly, the second magnetic member 123 disposed in the magnetic member disposition recess 48 overlaps the magnetization polarization line 121c of the second magnet 121. In a state where power is not supplied to the first coil 112 and the second coil 122, the posture of the movable body 5 is a reference posture in which the optical axis of the camera module 4 and the Z axis, which is a reference axis, coincide with each other due to the magnetic attraction force acting between the first magnetic member 113 and the first magnet 111 and the magnetic attraction force acting between the second magnetic member 123 and the second magnet 121.

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 housing 40, the first housing projection 45A projecting from the diagonal position in the first axis R1 direction toward the inner peripheral side is positioned between the two arm portions 73 extending from the first connection portion 74 of the gimbal spring 70 toward both sides in the circumferential direction. The first case projection 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. The bent portion 45b of the first housing projection 45A faces the holder 16 with a slight gap in the first axial direction. In addition, in the stopper housing 40, the second housing projection 45B projecting from the diagonal position in the second axis R2 direction toward the inner peripheral side is located between the two arm portions 73 extending from the second connecting portion 75 toward both sides in the circumferential direction. The second housing projection 45B faces a second central portion 75B of the end edge of the second connection portion 75 in the + Z direction with a predetermined second gap Q2 in the Z axis direction.

Here, the pair of second housing protrusions 45B defines the rotational angle range of the movable body 5 about the first axis R1. That is, when the movable body 5 rotates to a predetermined rotation angle about the first axis R1, each second housing projection 45B abuts against 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, and the gimbal spring 70 is prevented from further rotating about the first axis R1. Therefore, the rotation angle range of movable body 5 about first axis R1 can be defined by second housing projection 45B.

In addition, the pair of first housing projections 45A defines the rotational angle range of the movable body 5 about the second axis R2. That is, when the movable body 5 rotates to a predetermined rotation angle about the second axis R2, each first case projection 45A abuts against 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, and the gimbal spring 70 is prevented from further rotating about the second axis R2. Therefore, the rotational angle range of movable body 5 about second axis R2 can be defined by first housing projection 45A.

Further, when an impact or the like is applied from the outside, the pair of first case protrusions 45A defines the moving range of the movable body 5 in the first axis R1 direction. That is, when the movable body 5 moves to one side in the first axis R1 direction due to an external impact or the like, the bent portion 45b of the first case projection 45A located at one side in the first axis R1 direction abuts against the retainer 16 from the front in the moving direction, and the movable body 5 is restricted from further moving to one side in the first axis R1 direction. When the movable body 5 moves to the other side in the first axis R1 direction by an external impact or the like, the bent portion 45b of the first case projection 45A located on the other side in the first axis R1 direction abuts against the retainer 16 from the front side in the moving direction, and the movable body 5 is restricted from moving further to the other side in the first axis R1 direction.

(Effect)

According to this example, the movable body 5 has the holder 16, and the holder 16 has the holder frame portion 162 surrounding the camera module 4 from the radially outer side. The holder 16 is made of magnetic metal, and the first magnet 111 and the second magnet 121 of the magnetic drive mechanism 10 for shake correction are fixed to the outer surface of the holder frame 162. The first coil 112 and the second coil 122 of the magnetic drive mechanism 10 for correcting shake are fixed to the fixed body 8 and radially face the first magnet 111 and the second magnet 121. Thereby, the holder 16 functions as a yoke of the magnetic drive mechanism for shake correction 10. Therefore, it is easy to secure the driving force for driving the movable body 5 in the magnetic drive mechanism 10 for correcting shake.

The holder frame portion 162 includes an opening 116 that overlaps the magnetization polarizing line 111c of the first magnet 111 when viewed in the circumferential direction, at a position adjacent to the first magnet 111 in the circumferential direction. Accordingly, in the region of the holder frame portion 162 adjacent to the first magnet 111 in the circumferential direction, a short circuit of a part of the magnetic flux of the first magnet 111 from one side of the magnetization polarizing line 111c to the other side can be prevented or 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 includes an opening 117 that overlaps the magnetization polarizing line 121c of the second magnet 121 when viewed in the circumferential direction at a position adjacent to the second magnet 121 in the circumferential direction. Accordingly, in the region of the holder frame portion 162 adjacent to the second magnet 121 in the circumferential direction, a short circuit of a part of the magnetic flux of the second magnet 121 from one side of the magnetization polarizing line 121c to the other side can be prevented or suppressed. Therefore, the magnetic flux of the second magnet 121 can be efficiently used as the driving force for driving the movable body 5.

The opening 116 is provided along the first side wall surface 111a of the first magnet 111. Therefore, if a jig for positioning 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 jig for positioning 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.

The width D1 of the opening 116 in the circumferential direction is equal to or greater than the distance E1 separating the first magnet 111 and the first coil 112 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, the magnetic flux of the first magnet 111 is more easily suppressed from being short-circuited in the holder frame portion 162. Similarly, the width D1 of the opening 117 in the circumferential direction is equal to or greater than the distance E2 separating the second magnet 121 and the second coil 122 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, the magnetic flux of the second magnet 121 is more easily suppressed from being short-circuited in the holder frame portion 162.

The holder frame portion 162 includes, as the opening 116, one opening 116a provided on one side in the circumferential direction of the first magnet 111 and the other opening 116b provided on the other side. Therefore, short-circuiting of the magnetic flux of the first magnet 111 can be prevented or suppressed on both sides of the holder frame portion 162 in the circumferential direction of the first magnet 111. Similarly, the holder frame portion 162 includes, as the opening 117, one side opening 117a provided on one side in the circumferential direction of the second magnet 121 and the other side opening 117b provided on the other side. Therefore, short-circuiting of magnetic flux of the second magnet 121 can be prevented or suppressed on both sides of the holder frame portion 162 in the circumferential direction of the second magnet 121.

In this example, a plurality of recesses 164 are provided in the magnet fixing region 162a overlapping the first magnet 111 on the outer surface of the holder frame portion 162. Adhesive layer 165 is interposed between first magnet 111 and magnet fixing region 162a. Accordingly, the adhesive forming the adhesive layer 165 is held in the recess 164, and therefore the first magnet 111 can be firmly fixed to the holder frame 162. Similarly, a plurality of recesses 164 are provided in the magnet fixing region 162b overlapping the second magnet 121 on the outer surface of the holder frame portion 162. Adhesive layer 165 is interposed between second magnet 121 and magnet fixing region 162 b. Accordingly, the adhesive forming adhesive layer 165 is held in recess 164, and therefore second magnet 121 can be firmly fixed to holder frame 162.

Further, each of the plurality of concave portions 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, 162 b. Therefore, in this example, after the first magnet 111 and the second magnet 121 are attracted to the holder frame portion 162, the adhesive agent is applied from the + Z direction of the first magnet 111 and the second magnet 121, whereby the adhesive layer 165 can be formed between the first magnet 111 and the magnet fixing region 162a and between the second magnet 121 and the magnet fixing region 162 b.

In this example, the gimbal mechanism 7 supports the movable body 5 via the rotation support mechanism 6 by supporting the rotation support mechanism 6 to be rotatable about the first axis R1 and about the second axis R2. Therefore, the movable body 5 is rotatable about the first axis R1 and about the second axis R2 in a state rotatable about the optical axis L. This allows the movable body 5 to rotate about the optical axis L, about the first axis R1, and about the second axis R2, thereby correcting the shake.

The roll correction magnetic drive mechanism 13 includes a roll correction magnet 131 fixed to the outer surface of the holder frame portion 162 and arranged in the circumferential direction of the first magnet 111 and the second magnet 121, and a roll correction coil 132 fixed to the fixed body 8 and facing the roll correction magnet 131 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. This makes it easy to ensure the driving force for driving the movable body 5 by the rolling correction magnetic drive mechanism 13.

The roll correcting magnet 131 is polarized in two poles in the circumferential direction, and the second magnetization polarization line thereof extends in the Z-axis direction. The holder frame portion 162 includes an opening portion 168 at a position adjacent to the roll correcting magnet 131 in the Z-axis direction. The second magnetization line overlaps the opening 168 when viewed from the Z-axis direction. Thus, in the region adjacent to the roll correction magnet 131 in the Z-axis direction in the holder frame portion 162, a short circuit of a part of the magnetic flux of the roll correction magnet 131 from one side of the second magnetization pole line to the other side 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 roll correcting magnet 131. Therefore, if a jig for positioning is inserted into the opening 168 and the roll correcting magnet 131 is attracted to the holder frame portion 162 while being in contact with the jig, the roll correcting magnet 131 can be positioned in the Z-axis direction.

The width D2 of the opening 168 in the Z-axis direction is equal to or greater than the interval E3 between the roll correcting magnet 131 and the roll correcting coil 132 in the radial direction. Therefore, the magnetic flux directed in the Z-axis direction from the rolling correction magnet 131 can be easily directed in the radial direction. Therefore, it is easier to suppress the short circuit of the magnetic flux of the rolling correction magnet 131 in the holder frame portion 162.

(modification example)

The stopper housing 40 (main 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 main body 40A by an adhesive. Therefore, adhesive layer 165 is provided between main body 40A and

magnetic members

113 and 123.

In order to form the first connecting mechanism 71, the first shaft side protrusion 80 protruding to the outer peripheral side on the first shaft R1 may be provided at the tip end portion of the plate holder extending portion 67, and the first shaft side recess for rotatably receiving the first shaft side protrusion may be provided on the first shaft R1 of the first connecting portion 74 of the gimbal spring. Similarly, in order to configure the second connection mechanism 72, a second shaft side protrusion may be provided on the second shaft R1 of the second connection portion 75 of the gimbal spring, and a second shaft side recess portion that rotatably receives the second shaft side protrusion may be provided on the second shaft R2 of the plate portion 36 of each second vertical frame portion 33 of the frame case 30.

Here, as the shake correction, when only the YAW direction YAW around the X axis and the PITCH direction PITCH around the Y axis are corrected, the rotation support mechanism 6 may be omitted from the optical unit 1 with the shake correction function. In this case, the optical unit 1 with the shake correction function has: a movable body 5 provided with a camera module 4; a gimbal mechanism 7 that supports the movable body 5 so as to be rotatable about a first axis R1 intersecting the optical axis L of the lens of the camera module 4 and rotatable about a second axis R2 intersecting the optical axis L and the first axis; a fixed body 8 for supporting the movable body 5 via a gimbal mechanism 7; and a magnetic drive mechanism 10 for correcting shake for rotating the movable body 5 about the first axis R1 and about the second axis R2. In this case, the shaft portion 61 is omitted from the holder 16. The plate holder 63 is integrated with the holder 16 to form the holder 16 of the movable body 5. This makes it possible to omit the rotation support mechanism 6.

Claims

1. An optical unit with a shake correction function, comprising:

a movable body including a camera module and a holder for holding the camera module;

a gimbal mechanism that supports the movable body so as to be rotatable about a first axis that intersects an optical axis of the camera module and is rotatable about a second axis that intersects the optical axis and the first axis;

a fixed body that supports the movable body via the gimbal mechanism; and

a magnetic drive mechanism for shake correction that rotates the movable body about the first axis and about the second axis,

the holder is made of magnetic metal and has a frame portion surrounding the camera module from the outside in the radial direction,

the magnetic drive mechanism for shake correction includes: a shake correcting magnet fixed to an outer surface of the frame portion; and a shake correction coil supported by the fixed body and facing the shake correction magnet at a predetermined first distance in a radial direction,

the shake correcting magnet is polarized into two poles in the optical axis direction, a first magnetization split line of the shake correcting magnet extends in a circumferential direction,

the frame portion includes a first opening provided along the shake correction magnet at a position adjacent to the shake correction magnet in the circumferential direction,

the first magnetization line and the first opening portion overlap when viewed in the circumferential direction.

2. The optical unit with shake correcting function according to claim 1,

a first width dimension of the first opening in the circumferential direction is equal to or greater than a first interval at which the shake correction magnet and the shake correction coil are separated in the radial direction.

3. The optical unit with shake correcting function according to claim 1 or 2,

the magnet for correcting shake is in 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 includes, as the first opening, one side opening linearly extending in the optical axis direction along one of the first side wall surfaces, and the other side opening linearly extending in the optical axis direction along the other of the first side wall surfaces.

4. The optical unit with shake correcting function according to any one of claims 1 to 3,

a plurality of first concave portions are provided on an outer surface of the frame portion in a first magnet fixing region overlapping with the shake correction magnet,

an adhesive layer is interposed between the first magnet fixing region and the shake correction magnet.

5. The optical unit with a shake correcting function according to claim 4,

a plurality of the first concave portions are grooves extending in the optical axis direction,

one end of the groove in the optical axis direction reaches the outside of the first magnet fixing region on the outer side surface.

6. The optical unit with a shake correction function according to any one of claims 1 to 5, comprising:

a rotation support mechanism that supports the movable body to be rotatable around the optical axis; and

a rolling correction magnetic drive mechanism that rotates the movable body around the optical axis,

the gimbal mechanism supports the rotation support mechanism so as to be rotatable about the first axis and about the second axis, and supports the movable body via the rotation support mechanism,

the rolling correction magnetic drive mechanism includes a rolling correction magnet fixed to the outer side surface of the frame portion in a row along the circumferential direction of the shake correction magnet, and a rolling correction coil held by the fixed body and facing the rolling correction magnet at a predetermined second distance in the radial direction,

the roll correction magnet is polarized in the circumferential direction into two poles, a second magnetization pole line of the roll correction magnet extends in the optical axis direction,

the frame portion has a second opening portion at a position adjacent to the roll correction magnet in the optical axis direction,

the second magnetization line and the second opening overlap when viewed from the optical axis direction.

7. The optical unit with shake correcting function according to claim 6,

a second width dimension of the second opening in the optical axis direction is equal to or greater than a second interval at which the rolling correction magnet and the rolling correction coil are separated in the radial direction.