Lens barrel and imaging device

Abstract

To miniaturize a blur correction device.SOLUTION: A lens barrel includes a fixed frame, a movable frame which holds a lens and is movable with respect to the fixed frame, a first driving part which drives the movable frame with respect to the fixed frame in a direction crossing with an optical axis, and a regulation part which regulates a rotation around the optical axis of the movable frame with respect to the fixed frame. The regulation part includes a first shaft which is held by the movable frame in nearly parallel to a plane orthogonal to an optical axis direction, a second shaft which is held by the fixed frame in nearly parallel to the first shaft, a first engagement part which is engaged with the first shaft, a second engagement part which is engaged with the second shaft, and a rocking member which is rockable around the first shaft and around the second shaft.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a lens barrel and an imaging device. [Background technology]

[0002] There is known an imaging device that includes a shake correction device that suppresses blurring of a captured image caused by camera shake, etc. There is a demand for regulating the rotation of the shake correction device (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-124809 A Summary of the Invention

[0004] According to a first aspect, a lens barrel includes a fixed frame, a movable frame that holds a lens and is movable relative to the fixed frame, a first drive unit that drives the movable frame relative to the fixed frame in a direction intersecting an optical axis, and a restriction unit that restricts rotation of the movable frame about the optical axis relative to the fixed frame. a locking member that restricts movement of the movable frame relative to the fixed frame; and a second driving unit that drives the locking member. the restricting portion includes a first axis held by the movable frame substantially parallel to a plane perpendicular to the optical axis direction, a second axis held by the fixed frame substantially parallel to the first axis, a first engaging portion that engages with the first axis, and a second engaging portion that engages with the second axis, and a swinging member that is swingable around the first axis and the second axis. The swing member is disposed at a position different from the second drive unit in a circumferential direction of a circle centered on the optical axis, and the swing member does not overlap with the second drive unit in a direction of the optical axis. .

[0005] According to a second aspect, an imaging device includes the above-described lens barrel.

[0006] The configurations of the embodiments described below may be appropriately improved, and at least a part of them may be replaced with other components. Furthermore, components that are not particularly limited in terms of their location may be located in any location that can achieve their function, not limited to the location disclosed in the embodiments. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram showing a camera including a lens barrel equipped with a shake correction device according to one embodiment, and a camera body. [Diagram 2] FIG. 2 is an exploded perspective view of the image stabilization device as viewed from the camera body side. [Diagram 3] FIG. 3 is an exploded perspective view of the image stabilization device as viewed from the subject side. [Figure 4] FIG. 4 is a perspective view of the image stabilization device as viewed from the subject side. [Diagram 5] FIG. 5 is a plan view of the image stabilization device as viewed from the subject side. [Figure 6] FIG. 6 is a cross-sectional view taken along line AA in FIG. [Figure 7] FIG. 7A is a perspective view of the movable frame as viewed from the camera body side, and FIG. 7B is a perspective view of the movable frame as viewed from the subject side. [Figure 8] FIG. 8 is a diagram for explaining the axial direction of the first axis. [Figure 9] FIG. 9(A) is a perspective view of the first fixing frame as viewed from the camera body side, and FIG. 9(B) is a perspective view of the first fixing frame as viewed from the subject side. [Figure 10] FIG. 10 is a diagram for explaining the axial direction of the second axis. [Figure 11] Figure 11(A) is an oblique view of the oscillating member, Figure 11(B) is an oblique view showing the oscillating member engaging with the first axis and the second axis, Figure 11(C) is a partial cross-sectional view showing the relationship between the first axis, the oscillating member, and the first retaining portion of the movable frame, and Figure 11(D) is a plan view showing the relationship between the second axis, the oscillating member, and the second retaining portion of the first fixed frame. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] A lens barrel 100 including a shake correction device 80 according to an embodiment will be described in detail below with reference to the drawings. In the drawings shown below, an XYZ Cartesian coordinate system is appropriately provided to facilitate explanation and understanding. In this coordinate system, the direction from the subject toward the camera body 101 side at the camera position (hereinafter referred to as the normal position) when the photographer takes a landscape image with the optical axis OA horizontal is defined as the +Z direction. In addition, the direction toward the right side as viewed from the camera body 101 side at the normal position is defined as the +X direction. In addition, the direction toward the upper side at the normal position is defined as the +Y direction. Note that the scale of the shape, length, thickness, etc. of each part shown in the embodiment does not necessarily match the actual one, and in addition, in each drawing, some elements may be omitted from illustration in order to facilitate understanding. In addition, in a cross-sectional view, hatching of some elements may be omitted.

[0009] 1 is a diagram showing a camera 1 including a lens barrel 100 equipped with a shake correction device 80 according to this embodiment, and a camera body 101. Note that in this embodiment, the lens barrel 100 is detachable from the camera body 101, but is not limited to this, and the lens barrel 100 and the camera body 101 may be integrated.

[0010] The camera body 101 includes an image sensor IS and a control unit 112. The image sensor IS is composed of a photoelectric conversion element such as a CCD (Charge Coupled Device), and converts the subject image formed by the imaging optical system (lens barrel 100 attached to the camera body 101) into an electrical signal.

[0011] The control unit 112 includes a CPU (Central Processing Unit) and the like, and controls the overall operation of the camera 1 related to photography, including focusing drive in the camera body 101 and the attached lens barrel 100, and blur correction of captured images caused by camera shake, etc.

[0012] As shown in Fig. 1, a lens barrel 100 according to this embodiment includes a fixed barrel 10. In this embodiment, the fixed barrel 10 is made up of multiple parts, but it may be made up of a single part. As shown in Fig. 1, a lens mount LM that enables the lens barrel 100 to be attached to and detached from a camera body 101 is fixed to the fixed barrel 10.

[0013] Lens barrel 100 also includes multiple lens groups L1-L9 arranged in sequence along a common optical axis OA. Lens group L4 is held in lens holding frame F4, lens group L6 is held in lens holding frame F6, and lens group L8 is held in lens holding frame F8. The other lens groups are held in fixed barrel 10. Each of lens groups L1-L9 may be composed of a single lens or multiple lenses.

[0014] The lens group L6 is a vibration reduction (VR) lens, and when performing vibration reduction, it can be moved by a vibration reduction device 80 within a plane perpendicular to the optical axis OA.

[0015] Fig. 2 is an exploded perspective view of blur correction device 80 as seen from the camera body 101 side, and Fig. 3 is an exploded perspective view of blur correction device 80 as seen from the subject side. Fig. 4 is a perspective view of blur correction device 80 as seen from the subject side. Fig. 5 is a plan view of blur correction device 80 as seen from the subject side. As shown in Figs. 2 to 4, blur correction device 80 includes a movable frame 60, a fixed frame 30, and a lock ring 20.

[0016] The movable frame 60 holds the lens group L6 via the lens holding frame F6, and moves within the XY plane perpendicular to the optical axis OA (Z axis).

[0017] The fixed frame 30 includes a first fixed frame 40 and a second fixed frame 50. As shown in Fig. 2, the first fixed frame 40 is a substantially annular member having a circular hole 41 in the center, and unlike the movable frame 60, it does not move within a plane perpendicular to the optical axis OA, but holds the movable frame 60 so that it can move relatively within the plane perpendicular to the optical axis OA. More specifically, the first fixed frame 40 holds the movable frame 60 via three steel balls 43 and three coil springs 42.

[0018] The movable frame 60 and the first fixed frame 40 are biased toward each other by the coil spring 42 with the steel ball 43 sandwiched between them. The coil spring 42 connects the first fixed frame 40 and the movable frame 60 in the optical axis OA direction, and prevents the first fixed frame 40 and the movable frame 60 from being separated in the optical axis OA direction.

[0019] The first fixed frame 40 and the movable frame 60 each have a contact surface that comes into contact with the steel ball 43 at a position where the steel ball 43 is disposed. When the movable frame 60 moves within a plane perpendicular to the optical axis OA, the steel ball 43 rotates between the contact surface of the first fixed frame 40 and the contact surface of the movable frame 60. This allows the movable frame 60 to move parallel to the first fixed frame 40 in a low-friction state.

[0020] The second fixed frame 50 is a substantially annular member having a circular hole 51 in the center. Like the first fixed frame 40, the second fixed frame 50 also does not move within a plane perpendicular to the optical axis OA.

[0021] Here, the driving of the lens group L6 will be described. The lens group L6 held by the movable frame 60 is moved in the XY plane by VCMs (voice coil motors) 90X and 90Y to correct image blur. The VCMs 90X and 90Y are installed so as to push the center of gravity of the lens group L6 in a direction parallel to the XY plane. Note that the VCMs 90X and 90Y may be installed so as to push a position away from the center of gravity of the lens group L6 in a direction parallel to the XY plane.

[0022] The VCM90X is an actuator for driving the lens group L6 in the X-axis direction, and includes an X-axis direction drive coil 61X, a pair of X-axis direction drive magnets 52X, and a yoke 53X. The VCM90Y is an actuator for driving the lens group L6 in the Y-axis direction, and includes a Y-axis direction drive coil 61Y, a pair of Y-axis direction drive magnets 52Y, and a yoke 53Y. The pair of X-axis direction drive magnets 52X and the pair of Y-axis direction drive magnets 52Y are in-plane bipolar magnetized magnets having two poles polarized to N and S poles.

[0023] In this embodiment, the X-axis direction drive coil 61X and the Y-axis direction drive coil 61Y are attached to the movable frame 60. Meanwhile, a yoke 53X is attached to the second fixed frame 50 at a position corresponding to the X-axis direction drive coil 61X, and an X-axis direction drive magnet 52X is attached to the yoke 53X. Also, a yoke 53Y is attached to the second fixed frame 50 at a position corresponding to the Y-axis direction drive coil 61Y, and a Y-axis direction drive magnet 52Y is attached to the yoke 53Y.

[0024] By passing a current through the X-axis direction drive coil 61X, the X-axis direction drive coil 61X receives a Lorentz force and drives the movable frame 60 in the X-axis direction. This allows the lens group L6 held by the movable frame 60 to move in the X-axis direction. Also, by passing a current through the Y-axis direction drive coil 61Y, the Y-axis direction drive coil 61Y receives a Lorentz force and drives the movable frame 60 in the Y-axis direction. This allows the lens group L6 held by the movable frame 60 to move in the Y-axis direction.

[0025] Alternatively, the yoke 53X and the X-axis direction drive magnet 52X, as well as the yoke 53Y and the Y-axis direction drive magnet 52Y may be attached to the movable frame 60, and the X-axis direction drive coil 61X and the Y-axis direction drive coil 61Y may be attached to the second fixed frame 50. In other words, the VCM 90X and VCM 90Y may be a moving coil type VCM or a moving magnet type VCM.

[0026] The lock ring 20 is a substantially annular member having a circular hole 21 in the center, and is a member for locking the movable frame 60 so that it does not move relative to the fixed frame 30 when shake correction is not being performed.

[0027] The lock ring 20 is driven by a motor 70 (see Figures 2 and 3) attached to the second fixed frame 50 to rotate around the optical axis OA and move between a locked position that restricts the movement of the movable frame 60 and an unlocked position that releases the restriction.

[0028] In the image stabilization device 80 having the above configuration, if the movable frame 60 rotates about the optical axis OA during image stabilization, the position control accuracy of the lens group L6 in the XY plane decreases. Therefore, as shown in Figures 4 and 5, the image stabilization device 80 is provided with a rotation restriction mechanism 300 for restricting the rotation of the movable frame 60 about the optical axis OA.

[0029] 5, in this embodiment, the rotation restriction mechanism 300 is provided in the smaller of the areas between the motor 70 and the VCM 90Y in the circumferential direction of a circle centered on the optical axis OA. Note that the rotation restriction mechanism 300 may be provided, for example, in the smaller of the areas between the motor 70 and the VCM 90X. Also, for example, the rotation restriction mechanism 300 may be provided in the smaller of the areas between the VCM 90Y and the VCM 90X.

[0030] Fig. 6 is a cross-sectional view taken along the line AA in Fig. 5. As shown in Fig. 6, the rotation restricting mechanism 300 includes a first shaft 301, a second shaft 302, and a swinging member 303.

[0031] Fig. 7(A) is a perspective view of the movable frame 60 as viewed from the camera body 101 side, and Fig. 7(B) is a perspective view of the movable frame 60 as viewed from the subject side. Fig. 8 is a diagram for explaining the axial direction of the first axis 301, and is a plan view of the movable frame 60 as viewed from the camera body 101 side.

[0032] As shown in Fig. 7(A) and Fig. 7(B), the first axis 301 is held by the movable frame 60. Specifically, the first axis 301 is adhesively fixed to a first holding portion 65 provided on the movable frame 60 so that the axis AX1 is approximately parallel to a plane (XY plane) perpendicular to the optical axis OA. Also, as shown in Fig. 8, the axis AX1 direction of the first axis 301 intersects with both the X-axis direction and the Y-axis direction, which are the driving directions of the movable frame 60. In this embodiment, the angle between the axis AX1 direction and the X-axis direction and the angle between the axis AX1 direction and the Y-axis direction are set to 45°, but this is not limited thereto, and the angle between the axis AX1 direction and the X-axis direction and the angle between the axis AX1 direction and the Y-axis direction may be less than 45° or may be greater than 45°. In addition, the first axis 301 may be arranged so that the axis AX1 direction is parallel to the X-axis direction, or the first axis 301 may be arranged so that the axis AX1 direction is parallel to the Y-axis direction.

[0033] Fig. 9(A) is a perspective view of the first fixing frame 40 as seen from the camera body 101 side, and Fig. 9(B) is a perspective view of the first fixing frame 40 as seen from the subject side. Also, Fig. 10 is a diagram for explaining the axial direction of the second shaft 302, and is a plan view of the image stabilization device 80 as seen from the subject side.

[0034] As shown in FIG. 9(A) and FIG. 9(B), the second axis 302 is held by the first fixed frame 40. More specifically, the second axis 302 is adhesively fixed to the second holding portion 45 of the first fixed frame 40 so as to be substantially parallel to the first axis 301. As a result, the relative positional relationship between the first fixed frame 40 and the second axis 302 does not change. Also, as shown in FIG. 10, the axis AX2 direction of the second axis 302 intersects with both the X-axis direction and the Y-axis direction, which are the driving directions of the movable frame 60. In this embodiment, the angle between the axis AX2 direction and the X-axis direction and the angle between the axis AX2 direction and the Y-axis direction are set to 45°, but this is not limited thereto, and the angle between the axis AX2 direction and the X-axis direction and the angle between the axis AX2 direction and the Y-axis direction may be less than 45° or may be greater than 45°. In addition, the second axis 302 may be arranged so that the axis AX2 direction is parallel to the X-axis direction, or the second axis 302 may be arranged so that the axis AX2 direction is parallel to the Y-axis direction.

[0035] Fig. 11(A) is a perspective view of the oscillating member 303, and Fig. 11(B) is a perspective view showing the state in which the oscillating member 303 is engaged with the first shaft 301 and the second shaft 302. Fig. 11(C) is a partial cross-sectional view showing the relationship between the first shaft 301, the oscillating member 303, and the first holding portion 65 of the movable frame 60, and Fig. 11(D) is a plan view showing the relationship between the second shaft 302, the oscillating member 303, and the second holding portion 45 of the first fixed frame 40.

[0036] The swinging member 303 is an integrally molded resin product, and as shown in FIG. 11(A), includes a first engagement portion 303a and a second engagement portion 303b.

[0037] The first engagement portion 303a has a through hole 303d. When the first shaft 301 is inserted through the through hole 303d, the first engagement portion 303a engages with the first shaft 301. Since the first engagement portion 303a engages with the first shaft 301, the swinging member 303 becomes swingable around the first shaft 301.

[0038] As shown in FIG. 11(C), in the direction of axis AX1 of the first shaft 301, a clearance (gap) is provided between the first holding portion 65 (movable frame 60) and the oscillating member 303, thereby reducing the friction experienced by the oscillating member 303 when the oscillating member 303 oscillates around the first shaft 301.

[0039] The second engagement portion 303b has a groove 303e extending in the axial direction of the second shaft 302, and the groove 303e is formed so as to come into contact with the second shaft 302 at both end portions 303f (see FIG. 11(D)). When the second shaft 302 is inserted through the groove 303e, the second engagement portion 303b engages with the second shaft 302. Since the second engagement portion 303b engages with the second shaft 302, the swinging member 303 becomes swingable around the second shaft 302.

[0040] When the movable frame 60 tries to rotate around the optical axis OA, a force is applied to the oscillating member 303 to rotate it around an axis perpendicular to the XY plane, as shown by the arrow AR1 in Fig. 11(D). Since the groove 303e is in contact with the second shaft 302 at both ends 303f, the rotation of the movable frame 60 around the optical axis OA can be suppressed without backlash even when a force is applied in the direction shown by the arrow AR1.

[0041] 11(D), the second holding portion 45 (first fixed frame 40) and the oscillating member 303 are spaced apart in the axis AX2 direction of the second shaft 302. This allows the oscillating member 303 to move along the axis AX2 of the second shaft 302. In addition, as shown in FIG. 11(B), the second shaft 302 is longer than the first shaft 301, which allows the movable frame 60 to move relatively to the first fixed frame 40 in the axis AX2 direction of the second shaft 302.

[0042] In the rotation restriction mechanism 300 configured in this manner, the oscillating member 303 slides in the axis AX2 direction of the second shaft 302, so that the movable frame 60 is guided in the axis AX2 direction. In addition, the oscillating member 303 oscillates around the axis AX1 and the axis AX2, so that the movable frame 60 is guided in the direction D1 (see FIG. 8 and FIG. 10) perpendicular to the axis AX1 and the axis AX2. This allows the VCM 90X and VCM 90Y to move the movable frame 60 to a desired position on the XY plane. On the other hand, when the movable frame 60 tries to rotate around the optical axis OA, the oscillating member 303 tries to rotate around an axis perpendicular to the XY plane, but the groove 303e of the oscillating member 303 is in contact with the second shaft 302 fixed to the first fixed frame 40, so that the rotation is restricted by the second shaft 302. This allows the movable frame 60 to be restricted from rotating around the optical axis OA.

[0043] In this embodiment, since the rocking member 303 is an integrally molded product made of resin, the rocking member 303 has high dimensional accuracy. Therefore, even if the length (engagement length) of the rocking member 303 engaging with the second shaft 302 is short, sufficient accuracy can be achieved to restrict the rotation of the movable frame 60 around the optical axis OA. This allows the first shaft 301 and the second shaft 302 to be short, and the rotation restriction mechanism 300 to be small. As a result, the rotation restriction mechanism 300 can be disposed, for example, between the VCM 90Y and the motor 70. That is, the rocking member 303 can be disposed at a position different from the motor 70 in the circumferential direction of a circle centered on the optical axis OA. Therefore, the rocking member 303 does not overlap with the motor 70 in the optical axis OA direction. For example, if the rotation restriction mechanism 300 is large, it cannot be disposed in a space between the motor 70 and the VCM 90Y due to space problems, and the rotation restriction mechanism 300 is disposed at a position where the motor 70 and the rotation restriction mechanism 300 overlap in the optical axis OA direction. However, since the rotation restriction mechanism 300 of this embodiment is small enough to be placed, for example, between the motor 70 and the VCM 90Y, the rotation restriction mechanism 300 can be placed at a position where the motor 70 and the rotation restriction mechanism 300 do not overlap in the optical axis OA direction. For example, the end of the motor 70 on the subject side in the optical axis OA direction is placed closer to the subject than the end of the rocking member 303 on the subject side in the optical axis OA direction. This makes it possible to reduce the thickness of the image stabilization device 80 in the optical axis OA direction compared to a case where the rocking member 303 overlaps with the motor 70 in the optical axis OA direction. Note that the rocking member 303 is not limited to being made of resin, and may be made of other materials.

[0044] As described in detail above, according to this embodiment, the lens barrel 100 comprises a first fixed frame 40 (fixed frame 30), a movable frame 60 that holds lens group L6 and is movable relative to the first fixed frame 40, VCMs 90X, 90Y that drive the movable frame 60 relative to the first fixed frame 40 in a direction intersecting the optical axis OA, and a rotation restriction mechanism 300 that restricts rotation of the movable frame 60 about the optical axis OA relative to the first fixed frame 40. The rotation restriction mechanism 300 includes a first axis 301 held by the movable frame 60 and substantially parallel to a plane perpendicular to the optical axis OA, a second axis 302 held by the first fixed frame 40 substantially parallel to the first axis 301, a first engagement portion 303a engaging with the first axis 301, and a second engagement portion 303b engaging with the second axis 302, and a swinging member 303 swingable around the first axis 301 and the second axis 302. In this embodiment, the swinging member 303 is movable along the second axis 302. As a result, as described above, the movable frame 60 can be moved to a desired position on the XY plane by the VCM 90X and VCM 90Y while restricting the movable frame 60 from rotating around the optical axis OA.

[0045] Furthermore, in this embodiment, the lens barrel 100 includes a lock ring 20 that restricts movement of the movable frame 60 relative to the first fixed frame 40, and a motor 70 that drives the lock ring 20, and the oscillating member 303 is disposed at a different position from the motor 70 in the circumferential direction of a circle centered on the optical axis OA. In other words, the oscillating member 303 does not overlap with the motor 70 in the direction of the optical axis OA. This makes it possible to reduce the thickness of the image stabilization device 80 in the direction of the optical axis OA.

[0046] Furthermore, in this embodiment, even if the length (engagement length) of the oscillating member 303 engaged with the second shaft 302 is shortened, sufficient accuracy can be achieved in restricting the rotation of the movable frame 60 about the optical axis OA, so that, for example, the rotation restriction mechanism 300 can be disposed between the VCM 90Y and the motor 70. As a result, the space can be used effectively.

[0047] In this embodiment, the axis AX1 direction of the first axis 301 and the axis AX2 direction of the second axis 302 intersect with the drive direction of the movable frame 60 by the VCM 90X and VCM 90Y. More specifically, in this embodiment, the axis AX1 direction of the first axis 301 intersects with both the X-axis direction and the Y-axis direction which are the drive directions of the movable frame 60, and the axis AX2 direction of the second axis 302 intersects with both the X-axis direction and the Y-axis direction which are the drive directions of the movable frame 60.

[0048] The friction when the oscillating member 303 moves along the second axis 302 is larger than the friction when the oscillating member 303 oscillates. By arranging the rotation restriction mechanism 300 so that the axis AX1 direction of the first axis 301 and the axis AX2 direction of the second axis 302 intersect with both the X-axis direction and the Y-axis direction of the movable frame 60, it is possible to smoothly move the movable frame 60 in both the X-axis direction and the Y-axis direction.

[0049] Note that the axis AX1 direction of the first axis 301 and the axis AX2 direction of the second axis 302 may intersect with only one of the X-axis direction and the Y-axis direction. For example, the axis AX1 direction of the first axis 301 and the axis AX2 direction of the second axis 302 may intersect with only the X-axis direction. In this case, the first axis 301 and the second axis 302 are parallel to the Y-axis direction. Even with this configuration, the movable frame 60 can be moved to a desired position on the XY plane by the VCM 90X and VCM 90Y while restricting the movable frame 60 from rotating around the optical axis OA.

[0050] In the above embodiment, the case where the second shaft 302 is longer than the first shaft 301 and the oscillating member 303 is movable along the second shaft 302 has been described, but the present invention is not limited to this. For example, the first shaft 301 may be longer than the second shaft 302 and the oscillating member 303 may be movable along the first shaft 301.

[0051] In the above embodiment, the oscillating member 303 may be fixed to the second shaft 302, and the first fixed frame 40 may hold the second shaft 302 so as to be rotatable around the axis AX2 and movable in the direction of the axis AX2.

[0052] Further, in the above embodiment, a lens movement type blur correction device 80 that drives the lens group L6 has been described, but the present invention is not limited to this and can also be applied to an image sensor movement type blur correction device that drives an image sensor.

[0053] Furthermore, the image stabilization device described in the above embodiment can be applied not only to compact digital cameras and single-lens reflex digital cameras, but also to optical devices such as video cameras, binoculars, microscopes, telescopes, and mobile phones.

[0054] The above-described embodiment is a preferred example, but is not limited thereto, and various modifications are possible without departing from the scope of the present invention, and any combination of components may be used. [Explanation of symbols]

[0055] 20 Lock Ring 30 Fixed Frame 40 First Fixed Slot 50 Second Fixed Slot 52X,52Y Magnet 53X, 53Y York 60 Movable frame 61X, 61Y coil 70 Motor 80 Image Stabilizer 90X, 90Y VCM 300 Rotation restriction mechanism 301 1st axis 302 2nd axis 303 Swinging member 303a First engaging part 303b Second engaging part 303d through hole 303e Groove L6 lens group

Claims

1. A fixed frame and a movable frame that holds a lens and is movable relative to the fixed frame; a first drive unit that drives the movable frame relative to the fixed frame in a direction intersecting an optical axis; a restricting portion that restricts rotation of the movable frame relative to the fixed frame about the optical axis; a locking member that restricts movement of the movable frame relative to the fixed frame; A second drive unit that drives the lock member; Equipped with The regulating portion is a first axis held by the movable frame and extending substantially parallel to a plane perpendicular to the optical axis direction; a second shaft held by the fixed frame and substantially parallel to the first shaft; a swing member including a first engaging portion that engages with the first shaft and a second engaging portion that engages with the second shaft, the swing member being swingable around the first shaft and the second shaft; Equipped with the swinging member is disposed at a position different from the second driving unit in a circumferential direction of a circle centered on the optical axis, The swing member does not overlap with the second drive unit in the optical axis direction. Lens barrel.

2. The swinging member is movable along the first axis or the second axis. The lens barrel according to claim 1 .

3. The relative positional relationship between the fixed frame and the second axis does not change. The lens barrel according to claim 1 or 2.

4. an end portion of the second driving portion on the subject side in the optical axis direction is disposed closer to the subject than an end portion of the swinging member on the subject side in the optical axis direction; The lens barrel according to any one of claims 1 to 3.

5. an axial direction of the first shaft and an axial direction of the second shaft intersect with a driving direction of the movable frame by the first driving unit; The lens barrel according to any one of claims 1 to 4.

6. the driving direction includes a first direction in a plane perpendicular to the optical axis and a second direction perpendicular to the first direction in the plane, An axial direction of the first axis and an axial direction of the second axis intersect with both the first direction and the second direction. The lens barrel according to claim 5 .

7. the first engagement portion has a hole through which the first shaft is inserted, The second engagement portion has a groove extending in the axial direction of the second shaft. The lens barrel according to any one of claims 1 to 6.

8. The second axis is longer than the first axis. The lens barrel according to any one of claims 1 to 7.

9. The rocking member is an integrally molded resin product. The lens barrel according to any one of claims 1 to 8.

10. An imaging device comprising the lens barrel according to any one of claims 1 to 9.

Images