JP2014164171A - Image blur correction device, lens barrel, optical equipment and imaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve mass productivity by improving controllability by suppressing rolling of an optical member in an image blur correction device for correcting image blurring due to movement of an optical member.SOLUTION: An image blur correction device loaded to a lens barrel of an imaging device has a holder 31 for retaining a correction lens supported to be capable of movement against a base member 32. A plurality of balls are held in between the holder 31 and the base member 32 and pull springs 35L, 35R as energizing members are respectively attached to the base member 32 and the holder 31. Respective pull springs have first hook units 35b restrained to first claw units 31x, 31y provided on the holder 31 and a second hook unit 35a restrained by second claw units 32a, 32b provided on the base member 32. The direction of first hook units of respective springs being restrained to the first claw units and the direction of second hook unit being restrained to the second claw units are in a relationship orthogonal to each other.

Description

  The present invention relates to an image shake correction apparatus mounted on an imaging apparatus such as a digital camera, a digital video camera, or a silver salt still camera, or an optical apparatus such as a digital single lens reflex interchangeable lens, binoculars, or a telescope.

  A lens barrel of a conventional imaging apparatus has an image stabilization function for preventing image degradation due to camera shake or the like. Image blur is corrected by moving a part of the photographing lens group (shift lens group). The actuator for moving the shift lens group is configured by an electromagnetic drive unit using a coil and a magnet, for example. The shift lens group is held movably in a direction perpendicular to the optical axis while being elastically supported by the structure of the image blur correction device by a tension spring or the like.

  Patent Document 1 discloses a countermeasure for preventing rolling caused by a shift in the center of gravity of the shift lens group. By attaching the two tension springs to the shift lens group by changing the direction of the hook, a force in the reverse roll direction is applied. As shown in FIG. 12, the image shake correction apparatus includes two magnets 231a for moving the holding member 231 in the A direction and the B direction, three balls (not shown), and two springs 235L and 235R. Prepare. Each of the springs 235L and 235R has a hook portion attached to the base member 232 and the holding member 231 (see the claw portions 231x and 231y), and holds three balls between the base member 232 and the holding member 231 by an urging force. The center of gravity in the plane of the base member 232, the lens, and the two magnets 231a is located inside a triangle whose apex is the position of the three balls. Two magnets, three balls, and two springs are arranged so that a line segment in a plane formed by the two springs 235L and 235R straddles two sides of the triangle.

JP 2009-169359 A

  However, regardless of the position of the shift lens group, it is difficult to precisely balance the roll component caused by the deviation of the center of gravity and the reverse roll component generated by the spring. This is because the friction of the spring changes according to the moving direction of the shift lens group.

There is also a problem caused by friction between the hook portion of the spring and the claw portion that hooks it. For example, the so-called stick-slip (vibration phenomenon that occurs on the sliding surface) occurs in the movement of the shift lens group due to the hook state of the spring, slight variations in the manufacturing of the spring, the difference between static friction and dynamic friction, etc. there is a possibility. When a rotational force in the roll direction is generated due to the difference between the stick-slip of the two springs, it can be an obstacle to improving the control accuracy of the shift lens group and suppressing the defect rate during mass production.
SUMMARY OF THE INVENTION An object of the present invention is to improve controllability by suppressing rolling of an optical member and improve mass productivity in an image blur correction apparatus that corrects image blur by moving an optical member.

  In order to solve the above-described problems, an apparatus according to the present invention is an image shake correction apparatus that moves an optical member for image shake correction with respect to a base member in a plane perpendicular to the optical axis of the optical member. A holding member that holds the optical member; a drive unit that moves the holding member; a plurality of movable support members that are disposed between the base member and the holding member; and the base member and the holding member. And a plurality of biasing members that bias the plurality of movable support members between the base member and the holding member. Each of the plurality of urging members includes a first hook portion that is locked to a first claw portion provided on the holding member, and a second hook portion that is locked to a second claw portion provided on the base member. The direction in which the first hook portion is locked to the first claw portion and the direction in which the second hook portion is locked to the second claw portion are orthogonal to each other.

  According to the present invention, in an image blur correction apparatus that corrects an image blur by moving an optical member, it is possible to suppress rolling of the optical member, improve controllability, and increase mass productivity.

FIG. 10 is a cross-sectional view showing a lens barrel (photographing state) for explaining the first embodiment of the present invention in conjunction with FIG. 2 to FIG. 9. It is sectional drawing which shows a lens-barrel (collapsed state). FIG. 3 is a rear view of the image shake correction apparatus when viewed from the image plane side. It is a disassembled perspective view of an image blur correction apparatus. FIG. 3 is a front view of the image shake correction apparatus when viewed from the subject side. It is a perspective view which shows the spring of an image shake correction apparatus. It is sectional drawing of an image blur correction apparatus. FIG. 3 is a front view of the image blur correction apparatus in a state in which a third group lens is moved as viewed from the subject side. It is sectional drawing which shows the relationship between the hook part of a spring of an image shake correction apparatus, and a nail | claw part. It is a front view which shows the image blurring correction apparatus of the lens barrel which concerns on 2nd Embodiment of this invention. It is a perspective view which shows the spring of the image blurring correction apparatus of the lens barrel which concerns on 2nd Embodiment of this invention. It is a figure which shows the image blur correction apparatus of the lens barrel of a prior art example.

  Hereinafter, each embodiment of the present invention will be described with reference to the drawings. In each embodiment, a shift lens group (hereinafter also referred to as a correction lens) is illustrated as an image shake correction optical member (correction member) that is moved in a direction orthogonal to the optical axis of the imaging optical system by the image shake correction apparatus. . The present invention can also be applied to a mechanism unit that moves other optical elements and imaging elements instead of the correction lens. The image blur correction device can be mounted as a vibration isolation mechanism for various optical devices including observation devices such as binoculars, telescopes, and field scopes.

[First Embodiment]
1 and 2 show a lens barrel equipped with an image blur correction apparatus according to a first embodiment of the present invention. FIG. 1 is a cross-sectional view of the lens barrel in a state where it can be photographed (tele position). FIG. 2 is a cross-sectional view of the lens barrel in the retracted position. This retractable lens barrel can be used in an imaging device such as a digital camera. In the following, the object side in the optical axis direction of the optical system is defined as the object side (feeding direction), and the side close to the optical axis is defined as the inner side, and the positional relationship of each part will be described.
The optical system of the lens barrel includes a first lens group 1, a second lens group 2, a third lens group 3, a fourth lens group 4, an optical filter 5, an image sensor 6, and an aperture shutter unit 7 from the object side. The first group lens 1 is held by the holder 11, and the second group lens 2 is held by the holder 21. The third group lens 3 is held by the holder 31, and the fourth group lens 4 is held by the holder 41. By a known cam mechanism, speed reduction mechanism, and motor drive, each lens group moves in the optical axis direction between the shootable position and the storage position to change the shooting magnification. The light from the subject imaged by the imaging optical system is photoelectrically converted by the imaging device 6 and an image signal is output.

  The third group lens 3 functions as a correction lens, and corrects the position of the image formed on the light receiving surface of the image sensor 6 by moving in a direction orthogonal to the optical axis. That is, the amount of change when the position of the image changes due to camera shake or the like of the photographer holding the camera is offset by the movement of the third lens group 3 in the direction orthogonal to the optical axis, and image blur correction is performed. The image blur correction apparatus including the third group lens 3 is supported by the rectilinear member 42, and the third group lens 3 is controlled by a drive control unit (not shown).

  Next, the image blur correction apparatus will be described with reference to FIGS. 3 is a rear view of the image blur correction device, FIG. 4 is an exploded perspective view, and FIG. 5 is a front view of the third group lens 3 in the center position of the optical axis. The A direction (first direction) and the B direction (second direction) indicated by arrows in FIGS. 3 and 5 represent the directions in which the third lens group 3 is moved by the first driving unit and the second driving unit, respectively. The directions are orthogonal to each other.

  The image shake correction apparatus includes a third group holder 31 (see FIG. 4). The third group holder 31 is a holding member that holds the third group lens 3. Three balls 34 are arranged between the third group holder 31 and the base member 32. Each ball 34 is a movable support member that movably supports the third group holder 31 with respect to the base member 32. The third group holder 31 is biased toward the base member 32 by two tension springs 35 that are biasing members. A plurality of balls 34 are held between the third group holder 31 and the base member 32 by this urging force. In the present embodiment, two identical springs 35 are used. In order to distinguish the two tension springs 35, the sign of the first tension spring located on the left side when viewed from the object side with the direction in which the arrows A and B shown in FIG. The sign of the second tension spring located on the right side is 35R.

  As shown in FIGS. 1 and 2, the three balls 34 are surrounded by the recess of the base member 32, and come into contact with the base member 32 by contacting the third group holder 31 from the direction in which the recess opens. Between the two and disposed in a closed state. The three balls 34 roll while the third group holder 31 and the base member 32 are urged by the tension springs 35L and 35R. As a result, the third group holder 31 is supported so as to be movable in a direction perpendicular to the optical axis while maintaining a state parallel to the base member 32.

FIG. 6 is an enlarged perspective view showing a peripheral portion of the tension spring 35L. FIG. 7 is a cross-sectional view of the image blur correction apparatus, and is a cross-sectional view when cut in a direction parallel to the arrow A passing through the optical axis in FIGS. 3 and 5. 8 is a diagram showing a state in which the third group lens 3 is shifted with respect to the optical axis center position in FIG. 5, and FIG. 9 is a sectional view of a peripheral portion of the tension spring 35L in a state in which the third group lens 3 is shifted. It is.
The tension spring 35L shown in FIG. 6 is stretched in a state of being caught by the third group holder 31 and the base member 32. FIG. 6 shows a state in which the third lens group 3 is at the center position of the optical axis. The tension spring 35L has ring-shaped hook portions 35a and 35b at both ends thereof. The first hook portion 35b is hooked on the first claw portion 31x of the third group holder 31, and the second hook portion 35a is hooked on the second claw portion 32a of the base member 32 and charged in the pulling direction. In FIG. 6, the directions of arrows indicated by + X and −X (hereinafter referred to as X direction) are directions parallel to the B direction shown in FIGS. 3 and 5. Further, the directions of arrows indicated by + Y and -Y (hereinafter referred to as Y direction) are parallel to the A direction shown in FIGS. The first claw portion 31x is formed to protrude in the + Y direction, and the second claw portion 32a is formed to protrude in the + X direction, and the directions of the claw portions are orthogonal to each other. Correspondingly, the hook portions 35a and 35b of the tension spring 35L are also oriented in a substantially right angle with the spring axis as the center. That is, the plane including the arc surface of the hook portion 35b is parallel to the X direction, and the plane including the arc surface of the hook portion 35a is parallel to the Y direction. As shown in FIGS. 3 and 5, a claw portion 32b of the base member 32 and a claw portion 31y of the third group holder 31 are provided on the side of the tension spring 35R. The claw portions 32b and 31y are also directed in directions in which their directions are orthogonal to each other, and the hook portions of the tension spring 35R are respectively hooked in directions corresponding thereto. The claw portion 31x and the claw portion 31y are parallel to each other and rotated by 180 °. Similarly, the claw portion 32a and the claw portion 32b of the base member 32 are parallel to each other and rotated by 180 °.

As shown in FIG. 7, the third group holder 31 includes a magnet 31a. The base member 32 has a coil 38 and a bobbin 37 that holds the coil 38 so as to face the magnet 31 a in which the N pole and the S pole are magnetized. The bobbin 37 is fixed to the base member 32 with an adhesive 39. The magnet 31a and the coil 38 constitute an electromagnetic drive unit that moves the correction lens.
The third group holder 31 is formed of a polycarbonate material having a low specific gravity. Compared to the cross-sectional area of the third lens group 3 shown in FIG. Although there is a difference in specific gravity between the glass material and the magnet material, the third group lens 3 is relatively larger in weight than the magnet 31a. The center of gravity of the entire correction lens including the weights of the third group lens 3 and the magnet 31a and the third group holder 31 is indicated by a point G in FIG. The amount of deviation between the center of gravity G and the optical axis of the correction lens is relatively small. Further, the positions of the claw portions 31x, 31y, 32a, and 32b are designed so that the midpoints of the positions of the two tension springs 35L and 35R are located in the vicinity of the center of gravity G when viewed from the optical axis direction. .

  In the case of an optical system having a large aperture lens or a large number of correction lenses, the mass of the magnet is relatively small. This is because the weight of the lens is proportional to the volume of the lens, whereas the magnetic force of the magnet is not proportional to the volume of the magnet. Since the mass of the magnet is relatively small, the center of gravity of the correction lens does not deviate greatly due to the influence, and the center of gravity of the movable part (including the correction lens, the holding part, and the magnet) is located almost in the vicinity of the optical axis. The roll component due to the deviation of the center of gravity is reduced. In such a case, if a direction that is easy to move and a direction that is difficult to move are generated due to the difference in friction depending on the direction of the hook portion of the spring, rolling of the correction lens is caused. When rolling occurs, the relative position of the magnet with respect to the correction lens changes, and an error occurs in the detection of the position of the magnet by the Hall element described later. If a large error occurs in the position detection of the correction lens, the accuracy of feedback control may be affected. The details of the orientation of the hook portion of the tension spring will be described later.

  In the base member 32 (see FIG. 3), spaces are secured by forming linearly cut portions (concave portions) in the + Y direction of the claw portion 32a and the -Y direction of the claw portion 32b. . Here, when the entire correction lens is rotated by 180 ° around the midpoint (the midpoint of each position of the tension springs 35L and 35R) located near the center of gravity G, the same position where the claw portions 31x and 32a existed is obtained. Claw portions 31y and 32b come respectively. The spaces are also in corresponding positions. Therefore, by making a jig that rotates around the midpoint, the two springs can be assembled from the same direction in the same procedure, and the assembled state can be confirmed from the same direction.

  When the drive control unit (not shown) energizes the winding of the coil 38, the magnetic field generated in the winding core portion 37c (see FIG. 7) causes the N or S pole of the magnet 31a to attract or Repulsion generates driving force. As a result, the third group holder 31 that holds the third group lens 3 moves in a direction perpendicular to the optical axis (direction A in FIG. 7). A first drive unit that moves the correction lens in the first direction (A direction) is configured using the magnet 31a and the coil 38 of FIG. The arrow A direction in FIG. 7 corresponds to the arrow A direction shown in FIGS. 3 and 5. The second drive unit that moves the correction lens in the second direction by using another magnet and coil not shown in FIG. 7 with the same configuration in the arrow B direction shown in FIGS. Is configured.

A Hall element 36 a is mounted on the flexible substrate 36. As shown in FIG. 7, the hall element 36 a is fixed to the lid member 33 together with the flexible substrate 36. The lid member 33 acts as a lid for pressing the third group holder 31 when the third group holder 31 is lifted against the urging force of the tension spring 35. For this purpose, the lid member 33 is fixed to the base member 32 so as to cover the third group holder 31. The flexible substrate 36 is attached so as to sandwich the bobbin 37 and the lid member 33 from both sides in the optical axis direction.
The hall element 36a is disposed in the vicinity of the magnet 31a on the side opposite to the coil 38, and detects a change in the magnetic field generated by the magnet 31a. The flexible substrate 36 is provided with an electrical connection portion 36b with a coil terminal. The drive control unit calculates the amount of movement of the third group holder 31 based on the detection signal of the hall element 36a. Feedback control is performed by energizing the coil 38 via the flexible substrate 36 so that the calculated movement amount becomes the target movement amount.
3, 5, and 8, two sets of the coil 38, the magnet 31 a, and the hall element 36 a are provided apart from each other at an angle of 90 ° in the direction around the optical axis. These sets constitute an electromagnetic actuator and a feedback system based on position detection, and generate a driving force for moving the third group holder 31 in the A and B directions orthogonal to each other. Since forces acting on the two magnets 31a do not interfere with each other, the third group holder 31 can be moved to an arbitrary position within a plane orthogonal to the optical axis by the above-described control. Further, the driving directions (A direction and B direction) of each electromagnetic actuator are respectively parallel to the Y direction and the X direction with respect to the direction of the claw portion that locks the hook portion of the tension spring 35.

  FIG. 9 is a cross-sectional view showing the periphery of the tension spring 35L when the third group holder 31 is moved in the Y direction. A hook portion 35a is hooked on the claw portion 32a shown in FIG. The hook portion 35a has an inner peripheral portion that rotates and rubs counterclockwise (in the direction of the arrow W) with respect to the claw portion 32a, so that the frictional force is mainly kinetic friction and the size thereof is relatively large. . On the other hand, since the hook portion 35b rotates in the direction indicated by the arrow Z with the portion hooked on the claw portion 31x as an axis, the frictional force is mainly rolling friction and its size is relatively small. The same applies when moving the third group holder 31 in the X direction. In this case, the hook portion 35a rotates with the inner peripheral portion of the hook portion 35a being hooked on the claw portion 32a. Therefore, the frictional force at that time is mainly rolling friction and its size is relatively small. On the other hand, the hook part 35b is hooked on the claw part 31x. Since the inner peripheral portion of the hook portion 35b rotates and rubs against the claw portion 31x, the friction force at that time is mainly kinetic friction, and the size thereof is relatively large. When the third group holder 31 is moved relative to the base member 32, the frictional force of the tension spring 35L is the sum of the frictional forces of the hook portions 35a and 35b and the claw portions 32a and 31x. Becomes equal. Similarly, the frictional force of the tension spring 35L is the friction between the hook portions 35a and 35b and the claw portions 32a and 31x when the third group holder 31 moves in an oblique direction that is not parallel to the X direction and the Y direction. This is the sum of the X direction component and the Y direction component of the force. Therefore, the magnitude of the combined frictional force does not depend on the driving direction.

  The above matters also hold in the case of the tension spring 35R. That is, the sum of the X-direction component and the Y-direction component of the frictional force between each hook portion and each claw portion of the tension spring 35R does not depend on the driving direction. For this reason, the magnitude of the frictional force generated by the tension springs 35L and 35R is the same regardless of the direction in which the correction lens moves perpendicular to the optical axis, and the tension as the original spring is also the same.

  In the present embodiment, the friction loads applied to the third group holder 31 by the tension springs 35L and 35R are equalized by the above configuration. This is a positional relationship in which the orientation of the hook part of each tension spring and the claw part to which the hook part is locked is rotated by 90 ° about the spring axis when the correction lens is at the optical axis center. This is because it is possible to balance the direction in which movement is easy and the direction in which movement is difficult. Even when the third group holder 31 moves in an arbitrary direction obtained by combining the X direction and the Y direction, the friction loads applied to the third group holder 31 by the tension springs 35L and 35R become equal. Since the third group holder 31 does not receive a rotational moment from the tension springs 35L and 35R, the correction lens can move in an arbitrary direction within a plane orthogonal to the optical axis without rotating. Further, since the frictional force of the hook portions at both ends of one spring is not maximized at the same time, the maximum value of the frictional force can be reduced and stick-slip can be suppressed. Therefore, since the position detection error of the correction lens is reduced, the feedback control accuracy can be increased.

  As described above, according to the present embodiment, the force of the roll component of the shift lens group caused by the difference in frictional resistance due to the orientation of the hook part of the spring and the direction of the claw part is obtained by aligning the direction of the claw part that hooks the plurality of springs. Lost or reduced. In other words, the direction of each nail | claw part was arranged so that the sum total of the frictional resistance by the direction of a 1st nail | claw part (31x, 31y) and a 2nd nail | claw part (32a, 32b) might become the same with several tension springs. Designed. As a result, rolling of the shift lens group can be prevented, the controllability can be improved, and the defect rate during mass production can be reduced.

In the present embodiment, the configuration using the two tension springs 35L and 35R has been described. Not limited to this, even when three or more springs are used, the direction of the hook portions at the ends of the springs and the claw portions for locking them may be rotated by 90 ° about the spring axis. . As a result, even if the correction lens moves in any direction within the plane orthogonal to the optical axis, the frictional load between the springs does not change, so that no force in the roll direction is generated and the correction lens does not rotate.
[Second Embodiment]

  Next, a second embodiment according to the present invention will be described. 10 and 11 show a configuration example of an image shake correction apparatus according to the second embodiment. The image blur correction apparatus according to the second embodiment is different from the first embodiment in that the orientations of the hook part and the claw part of the tension spring are changed. 10 corresponds to FIG. 3 of the first embodiment, and FIG. 11 corresponds to FIG. 6 of the first embodiment. In the following, by using a code obtained by adding 100 to a code that has already been used for a part having the same function as in the case of the first embodiment, detailed description thereof will be omitted, and differences will be mainly described.

  The third group holder 131 holds the third group lens 103. Three balls (not shown) are arranged between the third group holder 131 and the base member 132. The third group holder 131 is biased in a direction approaching the base member 132 by two tension springs 135L and 135R. The direction (+ Y) of the claw portion 132a for locking the first hook portion 135a of the tension spring 135L and the direction (-Y) of the claw portion 132b for locking the first hook portion 135a of the tension spring 135R are shown in FIG. And parallel in a direction rotated by 180 °.

Differences from the first embodiment are shown in FIG. FIG. 11 is an enlarged perspective view of the peripheral portion of the tension spring 135L. In FIG. 11, the second claw portion 132a of the base member 132 and the first claw portion 131x of the third group holder 131 are parallel to each other (see the Y direction). In FIG. 10, since the center of the third group holder 131 is on the optical axis, the claws are just overlapped with each other and one of them is not visible. The hook portions 135a and 135b at both ends of the tension spring 135L are parallel to each other. That is, the second hook portion 135a is hooked on the second claw portion 132a, and the first hook portion 135b is hooked on the first claw portion 131x, and the planes including the arc surfaces of the hook portions are parallel to each other ( See X direction). The same applies to the portion on the side where the other tension spring 135R is attached, and the direction of the claw portion 132b and the claw portion 131y is parallel.
As described above, since the hooks are hooked on the claws at both ends of the spring, the frictional resistance between the spring hooks and the claws varies depending on the driving direction. That is, the spring has a large frictional force in the X direction and is difficult to move, and the spring has a small frictional force in the Y direction and is easy to move. Therefore, unlike the case of the first embodiment, one spring has a direction dependency on the frictional resistance. However, by designing the directions of the left and right claws 132a and 132b to be 180 ° rotationally symmetric, the direction in which the spring is easy to move and the direction in which the spring is difficult to move can be aligned in parallel. The corresponding claw parts 131x and 131y are also parallel to each other, and the claw parts 132a and 132b are parallel to each other at the normal position. The regular position means the position of each part when there is no rolling (roll angle is zero). The frictional force applied to the tension spring 135L is equal to the frictional force applied to the tension spring 135R. The state in which the frictional forces applied to these springs are equal does not depend on the direction in which the correction lens 103 moves. As a result, a force in the roll direction is not generated on the third group holder 131 due to the friction component, and the correction lens 103 can be prevented from rolling.

  When three or more tension springs are used, the orientations of the hook portions at both ends and the claw portions for locking them may be aligned in parallel for all the tension springs. As a result, the force in the roll direction is not generated, and the frictional load does not change even if the correction lens moves in any direction in the plane orthogonal to the optical axis, so that the correction lens does not rotate.

  In the second embodiment, the force component in the roll direction of the correction lens resulting from the difference in friction due to the direction of the hook portion and the claw portion is reduced by aligning the direction of the claw portion that hooks each spring. Rolling can be prevented. Further, when the entire correction lens is rotated by an angle of 180 degrees by the assembly jig, the positional relationship between the corresponding claw parts becomes the same due to the rotational symmetry of each claw part. Therefore, the spring can be attached from the same direction and the assembled state can be confirmed, and the assemblability is improved.

  The driving direction (B direction) of the actuator and the X direction of the claw part, and the driving direction (A direction) of the actuator and the Y direction of the claw part are not necessarily parallel. However, the movement of the spring is simplified and the reproducibility is improved by making the direction in which the driving force of the actuator acts and the direction of the claw portion that locks the hook portion of the spring parallel. Thereby, the effect that feedback control becomes easy is acquired.

3,103 Third lens group 31, 131 Third lens group holder 31a Magnet 31x, 31y, 131x, 131y First claw part 32, 132 Base member 32a, 32b, 132a, 132b Second claw part 34 Ball 35L, 35R, 135L, 135R Tension spring 35a, 135a Second hook part 35b, 35b First hook part 38, 138 Coil

Claims (11)

An image blur correction apparatus that moves an optical member for image blur correction with respect to a base member in a plane orthogonal to the optical axis of the optical member,
A holding member for holding the optical member;
A drive unit for moving the holding member;
A plurality of movable support members disposed between the base member and the holding member;
A plurality of urging members attached to the base member and the holding member and urged in a state where the plurality of movable support members are sandwiched between the base member and the holding member;
Each of the plurality of urging members includes a first hook portion that is locked to a first claw portion provided on the holding member, and a second hook portion that is locked to a second claw portion provided on the base member. And the direction in which the first hook portion is locked to the first claw portion and the direction in which the second hook portion is locked to the second claw portion are orthogonal to each other. Shake correction device. The plurality of biasing members are first and second tension springs;
The drive unit includes a first drive unit that drives the holding member in a first direction, and a second drive unit that drives the holding member in a second direction,
In the first tension spring and the second tension spring, the first hook portion is locked to the first claw portion of the holding member in a direction parallel to the first direction, and the second hook portion is the first tension spring. The image blur correction device according to claim 1, wherein the image blur correction device is locked to the second claw portion of the base member in a direction parallel to two directions.   The first hook portion and the second hook portion to which the first hook portion and the second hook portion of the first tension spring are respectively locked, and the first hook portion and the second hook portion of the second tension spring. The image blur correction device according to claim 2, wherein the first claw portion and the second claw portion that are respectively engaged with each other are arranged rotationally symmetrical in the direction around the optical axis. An image blur correction apparatus that moves an optical member for image blur correction with respect to a base member in a plane orthogonal to the optical axis of the optical member,
A holding member for holding the optical member;
A drive unit for moving the holding member;
A plurality of movable support members disposed between the base member and the holding member;
A plurality of urging members attached to the base member and the holding member and urged in a state where the plurality of movable support members are sandwiched between the base member and the holding member;
Each of the plurality of urging members includes a first hook portion that is locked to a first claw portion provided on the holding member, and a second hook portion that is locked to a second claw portion provided on the base member. Have
The directions of the first claw portions to which the first hook portions of the plurality of biasing members are respectively locked are parallel, and the second hook portions of the plurality of biasing members are respectively locked. An image blur correction apparatus characterized in that the directions of the second claw portions are parallel. The plurality of biasing members are a first tension spring and a second tension spring in which the direction of the first hook portion and the direction of the second hook portion are the same,
The direction of the first and second claw portions to which the first hook portion and the second hook portion of the first tension spring are respectively locked, and the first hook portion and the second hook of the second tension spring. The image blur correction device according to claim 4, wherein directions of the first claw portion and the second claw portion that are respectively locked are opposite to each other. The drive unit includes a first drive unit that drives the holding member in a first direction, and a second drive unit that drives the holding member in a second direction,
The first tension spring and the second tension spring include the first claw portion and the second tension spring in a state where the first hook portion and the second hook portion are parallel to one of the first direction and the second direction. The image blur correction device according to claim 5, wherein the image blur correction device is engaged with each of the claw portions.   The first hook portion and the second hook portion to which the first hook portion and the second hook portion of the first tension spring are respectively locked, and the first hook portion and the second hook portion of the second tension spring. 7. The image blur correction device according to claim 5, wherein the first claw portion and the second claw portion that are respectively locked are arranged in a rotationally symmetrical manner around the optical axis. The drive unit includes a magnet attached to the holding member, and a coil attached to the base member at a position facing the magnet.
The mass of the magnet is smaller than the mass of the optical member, and the center of gravity of the movable part including the optical member, the holding member, and the magnet is located in the vicinity of the optical axis. The image blur correction device according to item.   A lens barrel comprising the image blur correction device according to claim 1.   An optical apparatus comprising the lens barrel according to claim 9. An imaging apparatus comprising the lens barrel according to claim 9.

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