Image blur correction device and imaging apparatus

Abstract

To provide an image blur correction device or the like capable of suppressing lifting of a lens holding member, while securing the flexibility of arrangement of components other than a regulation member.SOLUTION: In an image blur correction device including a lens holding member (21) for holding an image blur correction lens (L2) to a base plate member (22) in a relatively movable manner in a plane orthogonal to the optical axis direction of the optical system of a device, and a sensor support member (26) for supporting a sensor (27a) for detecting the position of the lens holding member (21), the movement in the optical axis direction of the lens holding member (21) is regulated by a first part (26f) of the sensor support member (26) and second parts (21c and 21d) other than the sensor support member (26) on the opposite side to the first part and to the center of gravity of the lens holding member (21) across an optical axis.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to an image shake correction device and an imaging device such as a digital camera or a video camera equipped with the same.

Background Art

[0002] Conventionally, the following device has been known to correct image shake caused by hand shake or the like that easily occurs when an imaging device is used for hand-held imaging. That is, this image shake correction device (optical anti-shake unit) eliminates image shake by moving a correction lens for image shake correction included in an imaging lens within a plane perpendicular to the optical axis direction of the imaging lens.

[0003] The lens barrel disclosed in Patent Document 1 arranges a regulating member on the opposite side of the base plate in the optical axis direction when viewed from the tip side of a shift lens barrel that holds a correction lens, and restricts the movement range of the shift lens barrel in the optical axis direction. And even if an impact is applied and the shift lens barrel moves toward the subject side, the ball as a support member is prevented from falling off from a predetermined position.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the regulating member of the lens barrel disclosed in Patent Document 1 has a shape that surrounds the entire circumference of the lens in order to prevent a part of the shift lens barrel from rising. That is, the stopper member entirely surrounds the outer periphery of the lens holding member of the correction lens. For this reason, the degree of freedom in arranging components other than the regulating member is lowered, and there are problems such as difficulty in miniaturizing the image shake correction device.

[0006] An object of the present invention is to provide an image shake correction device capable of suppressing the floating of a lens holding member while ensuring the degree of freedom in arranging components other than the regulating member, and an imaging device including the same.

Means for Solving the Problems

[0007] In order to achieve the above object, the present invention provides an image shake correction device including a lens holding member that holds an image shake correction lens so as to be relatively movable in a plane orthogonal to the optical axis direction of the optical system of the device with respect to a base member, and a sensor support member that supports a sensor for detecting the position of the lens holding member. In the image shake correction device, the lens holding member is restricted from moving in the optical axis direction by a first portion provided in the sensor support member and a second portion other than the sensor support member on the side opposite to the center of gravity of the lens holding member with the optical axis interposed therebetween.

Effects of the Invention

[0008] According to the present invention, it is possible to provide an image shake correction device capable of suppressing the floating of a lens holding member while ensuring the degree of freedom in arranging components other than the regulating member, and an imaging device including the same.

Brief Description of the Drawings

[0009]

Figure 1

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Figure 3

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Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Mode for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the configurations described in the following embodiments are merely examples, and the scope of the present invention is not limited by the configurations described in the embodiments.

[0011] FIG. 1 is a perspective view of a lens barrel according to an embodiment of the present invention as viewed obliquely from the upper right front during imaging, FIG. 2 is a perspective view of the lens barrel as viewed obliquely from the upper right front during retraction, FIG. 3 is a cross-sectional view of the lens barrel during imaging, FIG. 4 is a cross-sectional view of the lens barrel during retraction, and FIG. 5 is an exploded perspective view. Further, FIG. 6 is an exploded perspective view of a two-group unit according to an embodiment of the present invention, FIGS. 7 and 8 are front views of the two-group unit, FIG. 9 is a cross-sectional view taken along line A-A of FIG. 7, and FIG. 10 is a cross-sectional view taken along line B-B of FIG. 7.

[0012] <Structure of the lens barrel> <First-group lens barrel 1: Cam barrel 9: Straight-moving barrel 10> First, a lens barrel according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. Note that the subject side of the lens barrel is referred to as "front", and the user side is referred to as "rear". The substantially cylindrical first-group lens barrel 1 holds a first-group lens L1 at its front. Three cam pins 1a (not shown) arranged below the inner peripheral surface of the first-group lens barrel 1 are engaged with a cam groove 9a (see FIG. 5) formed on the outer peripheral surface of the cam barrel 9. Further, the first-group lens barrel 1 is formed with straight-moving grooves 1b (not shown) extending in the front-rear direction at three positions on its inner peripheral surface, and is engaged with a straight-moving key 10a (see FIG. 5) formed above the outer peripheral surface of the straight-moving barrel 10.

[0013] <Lens barrier unit 8> The lens barrier unit 8 is arranged on the front side of the first-group lens barrel 1 and protects the first-group lens L1. Three cam pins 8a (not shown) arranged below the inner peripheral surface of the lens barrier unit 8 are engaged with a cam groove 9d (see FIG. 5) formed on the outer peripheral surface of the cam cylinder 9. Further, the lens barrier unit 8 has straight keys 8b (not shown) formed at three positions on its inner peripheral surface, and is engaged with a straight groove 1c formed on the outer peripheral surface of the first-group lens barrel 1 and extending in the front-rear direction.

[0014] <Aperture unit 6> The aperture unit 6 has a substantially annular appearance, and a set of three cam pins 6a (only one is shown in FIG. 5) arranged on its outer peripheral surface are engaged with a cam groove 9c (see FIG. 5) formed on the inner peripheral surface of the cam cylinder 9. Further, the aperture unit 6 has a straight key 6b (see FIG. 5) formed at the same position as the cam pin 6a, and is engaged with a straight groove 10c formed on the straight cylinder 10 and extending in the front-rear direction.

[0015] <Second-group unit 2> The second-group unit 2 has an annular appearance and holds the second-group lens L2. Three cam pins 22a (only one is shown in FIG. 5) arranged on the outer peripheral surface of the substantially annular second-group base plate 22 of the second-group unit 2 are engaged with a cam groove 9b formed on the inner peripheral surface of the cam cylinder 9. Further, the second-group base plate 22 has a straight key 22b formed at the same position as the cam pin 22a, and is engaged with a straight groove 10b formed on the straight cylinder 10 and extending in the front-rear direction.

[0016] <Shutter ND unit 7: Third-group unit 3: Driving cylinder 12: Fixed cylinder 13> The shutter ND unit 7 is fixed to the second-group unit 2 by screws or the like (not shown). The third-group unit 3 (see FIG. 5) has a substantially annular appearance and holds the third-group lens L3. Three cam pins 32a (only one is shown in FIG. 5) arranged on the outer peripheral surface of the substantially annular third-group base plate 32 (see FIG. 5) of the third-group unit 3 are engaged with a cam groove 12a formed on the inner peripheral surface of the driving cylinder 12. Further, the third-group base plate 32 has straight keys 32b (only one is shown in FIG. 5) formed at three positions on its outer peripheral surface, and is engaged with a straight groove 13d (see FIG. 5) formed on the fixed cylinder 13 and extending in the front-rear direction.

[0017] <Three-group holding frame 31: positioning part 31a: anti-vibration part 31b: guide bar 33: guide bar 32c> The three-group holding frame 31 has an annular appearance and holds the three-group lens L3. As shown in Fig. 5, the positioning part 31a and the anti-vibration part 31b formed on the three-group holding frame 31 are engaged with the guide bar 33 and the guide bar 32c respectively arranged and formed on the three-group base plate 32, and the three-group lens L3 is supported so as to be movable in the optical axis direction. In addition, a rack 34 is provided on the three-group holding frame 31 and is screwed to the screw of the stepping motor 35 fixed to the three-group base plate 32. When the three-group holding frame 31 is driven by the stepping motor 35, the three-group holding frame 31 moves in the optical axis direction without rotation due to the action of the positioning part 31a, the anti-vibration part 31b and the guide bar 33, the guide bar 32c.

[0018] <Four-group holding frame 4> The four-group holding frame 4 has a substantially annular appearance and holds the four-group lens L4. The three cam pins 4a (only one is shown in Fig. 5) arranged on the outer peripheral surface of the four-group holding frame 4 are engaged with the cam groove 12b (see Fig. 5) formed on the inner peripheral surface of the drive cylinder 12. In addition, three straight key 4b (only one is shown in Fig. 5) are formed at three locations on the outer peripheral surface of the four-group holding frame 4, and are engaged with the straight groove 13d extending in the front-rear direction formed on the fixed cylinder 13.

[0019] In addition, a set of three cam pins 9e (only one is shown in Fig. 5) arranged below the outer peripheral surface of the cam cylinder 9 are engaged with the cam groove 13a formed on the inner peripheral surface of the fixed cylinder 13. In addition, a set of three drive pins 9f (only one is shown in Fig. 5) arranged below the outer peripheral surface of the cam cylinder 9 penetrate through the through groove 13c formed on the fixed cylinder 13 and are engaged with the straight groove 12c formed on the inner peripheral surface of the drive cylinder 12. In addition, the cam cylinder 9 is rotatably clamped by the straight cylinder 10 and the straight plate 11, and moves in the optical axis direction integrally with the straight cylinder 10.

[0020] <Movable cover cylinder 14> The movable cover cylinder 14 is fixed to the cam cylinder 9 by a fixing member (not shown) or the like. Also, a set of three cam pins 14a (only one is shown in FIG. 5) arranged on the outer peripheral surface of the movable cover cylinder 14 are inserted into a cam groove 13b formed in the fixed cylinder 13 with a slight gap therebetween.

[0021] <Rectilinear plate 11> The rectilinear cylinder 10 restricts the rectilinear movement of the first group lens barrel 1, the aperture unit 6, and the second group unit 2. Also, the rectilinear cylinder 10 is fixed to an annular rectilinear plate 11 by a fixing member (not shown) or the like. Further, three rectilinear keys 11a (only one is shown in FIG. 5) formed on the outer peripheral surface of the rectilinear plate 11 are engaged with rectilinear grooves 13d formed in the front-rear direction on the inner peripheral surface of the fixed cylinder 13. A set of three keys 13e (only one is shown in FIG. 5) formed above the outer peripheral surface of the fixed cylinder 13 are engaged with a groove 12d formed above the inner peripheral surface of the drive cylinder 12.

[0022] <Fixed floor plate 5> The gear portion 12f formed on the lower side at the rear of the outer peripheral surface of the drive cylinder 12 is connected to a drive cylinder drive device composed of a DC motor 51 and a plurality of gears 52 provided on a fixed floor plate 5 (see FIG. 5). When the drive cylinder 12 is rotated by the output of the drive cylinder drive device, the cam cylinder 9 moves in the optical axis direction while rotating due to the action of a cam pin 9e provided on the cam cylinder 9 and the cam groove 13a of the fixed cylinder 13, and the action of a drive pin 9f of the cam cylinder 9 and a rectilinear groove 12c of the drive cylinder 12.

[0023] The first group lens barrel 1 moves in the optical axis direction without rotating due to the action of a cam pin 1a (not shown) of the first group lens barrel 1 and the cam groove 9a of the cam cylinder 9, and the action of a rectilinear groove 1b (not shown) of the first group barrel 1 and a rectilinear key 10a of the rectilinear cylinder 10. The lens barrier unit 8 moves in the optical axis direction without rotating due to the action of a cam pin 8a of the lens barrier unit 8 and the cam groove 9d of the cam cylinder 9, and the action of a rectilinear key 8b (not shown) of the lens barrier unit 8 and a rectilinear groove 1c of the first group lens barrel 1.

[0024] The aperture unit 6 moves in the optical axis direction without rotation due to the action between the cam pin 6a of the aperture unit 6 and the cam groove 9c of the cam cylinder 9, and the action between the straight key 6b of the aperture unit 6 and the straight groove 10c of the straight cylinder 10.

[0025] The two-group unit 2 moves in the optical axis direction without rotation due to the action between the cam pin 22a of the two-group base plate 22 and the cam groove 9b of the cam cylinder 9, and the action between the straight key 22b of the two-group base plate 22 and the straight groove 10b of the straight cylinder 10. Further, the three-group unit 3 moves in the optical axis direction without rotation due to the action between the cam pin 32a of the three-group base plate 32 and the cam groove 12a of the drive cylinder 12, and the action between the straight key 32b of the three-group base plate 32 and the straight groove 13d of the fixed cylinder 13.

[0026] The four-group holding frame 4 moves in the optical axis direction without rotation due to the action between the cam pin 4a of the four-group holding frame 4 and the cam groove 12b of the drive cylinder 12, and the action between the straight key 4b of the four-group holding frame 4 and the straight groove 13d of the fixed cylinder 13. The imaging element S and the optical filter F are held by the fixed base plate 5. Further, the fixed cylinder 13 and the fixed cover cylinder 15 are fixed to the fixed base plate 5 by screws (not shown).

[0027] <Configuration of the two-group unit 2> Next, the configuration of the two-group unit 2 provided with the image blur correction device will be described with reference to FIGS. 6 to 10. In FIG. 6, the two-group holding frame 21 (lens holding member) that holds the two-group lens (correction lens) L2 integrally includes a magnet 21a. The two-group holding frame 21 is provided with hook locking portions 21b at two locations, and a spring 25 (coil spring) that applies a tension, which is a tensile force, is hung on each hook locking portion 21b. Further, the spring 25 is arranged at a position along the outer periphery of the two-group holding frame 21 in consideration of the assemblability.

[0028] The coil unit 23 composed of a coil and a bobbin is adhesively fixed to the recess of the two-group base plate 22. Power supply to the coil is performed via the two-group FPC 27 described later to a metal pin embedded in the bobbin and electrically connected to the above-described coil. The other ends of the two springs 25 hung on the two-group holding frame 21 are hung on the hook locking portions 22c (only one is shown in FIG. 6) of the two-group base plate 22, and three non-magnetic balls 24 are sandwiched between the two-group base plate 22 and the two-group holding frame 21.

[0029] And the two-group holding frame 21 is in a state of being pressed toward the two-group base plate 22 via the balls 24. However, since it is via the balls 24, the two-group holding frame 21 is made to be freely movable in a plane perpendicular to the optical axis. By moving the two-group holding frame 21 in the plane, "image blur correction" for suppressing image blur in the imaging device S is executed.

[0030] Lands for soldering connection to the above-described coil unit are formed on the two-group FPC 27. Further, a Hall element 27a for detecting a magnetic field is provided on the back surface side (subject side) of the two-group FPC 27. The magnet 21a provided in the two-group holding member 21 is magnetized so as to move in the X direction and the Y direction shown in FIG. 7. The X direction and the Y direction are orthogonal to each other in a plane perpendicular to the optical axis direction, the X direction is the horizontal direction, and the Y direction is the vertical direction orthogonal thereto.

[0031] Each Hall element 27a detects the movement of the two-group holding frame 21 in each of the X and Y directions as a change in the magnetic field, and the movement amount is calculated based on the change amount. Since it is necessary that the positional accuracy of the magnet 21a and the Hall element 27a is high precision, the Hall element 27a is press-fitted into the sensor support member 26 and accurately positioned. Further, the two-group holding frame 21 includes two magnets 21a to be detected by the Hall element 27a (sensor), and the positioning protrusions 26c, protrusions 26d, regulation surfaces 26f, etc. can be arranged in the vicinity of any one of the magnets 21a.

[0032] The two-group FPC 27 as described above is fixed by engaging each of the positioning holes, the anti-vibration holes 27b and 27c, with the positioning protrusions 26b and 26c of the sensor support member 26, and further, the sensor support member 26 is attached to the two-group floor 22.

[0033] <Floating restriction structure of the two-group holding frame 21> Next, the floating restriction structure of the two-group holding frame 21 in the two-group unit 2 will be described. The total biasing force of the two springs 25 is, for example, equivalent to 4G when the gravity acting on the two-group holding frame 21 is 1G. However, when an impact force of 4G or more is applied to the two-group holding frame 21 and the two-group holding frame 21 moves largely toward the subject side (floats against the biasing force of the spring 25), the ball 24 drops out of the predetermined position. Or, the two-group lens L2 and the two-group holding frame 21 may collide with peripheral members. When the lens barrel is retracted during the focusing operation, when an impact force such as dropping is applied because the members approach each other, for example, the two-group lens L2 and the one-group lens L1 on the subject side may collide and the lens may be damaged.

[0034] For this reason, in the present embodiment, a restriction structure (the protrusion 21f, the locked portion 22h, the sensor support member 26, etc.) is provided to restrict the moving range of the two-group holding frame 21 in the optical axis direction (in other words, to restrict floating) so that parts, lenses, etc. do not collide against impacts.

[0035] The sensor support member 26 is assembled from the subject side of the two-group floor 22. That is, the sensor support member 26 is disposed on the opposite side of the two-group floor 22 in the optical axis direction. A positioning portion 26a is formed on the sensor support member 26, and this fits with the positioning portion 22f of the two-group floor 22. Further, the sensor support member 26 and the two-group floor 22 are fixed by the protrusion 26d being caught by the claw portion 22d and the arm portion 26e and the claw portion 22e being snap-fitted.

[0036] (FIG. 9: Cross-sectional view taken along line A-A of the two-group unit in FIG. 7; FIG. 10: Cross-sectional view taken along line B-B of FIG. 7) As shown in FIGS. 9 and 10, the regulation of the subject side of the sensor support member 26 is performed by the regulation surface 26f. By the regulation surface 26f coming into contact with the contact surfaces 21c (see FIG. 9) and 21d (see FIG. 10) of the two-group holding frame 21, the movement range of the two-group holding frame 21 in the optical axis direction is restricted to prevent it from colliding with surrounding members. Note that FIG. 7 shows a state where the two-group lens L2 is at the center of the unit (the center of the two-group lens L2 coincides with the optical axes of other lenses).

[0037] The regulation surface 26f is formed directly above the ball 24 and in the vicinity of the heavy magnet 21a so that the ball 24 does not drop off. The sensor support member 26 generally has an arch shape and is formed so as not to interfere with the lens L2, the aperture, the actuator 61 of the shutter unit, the actuator 28, and the stepping motor 35.

[0038] In a region where the sensor support member 26 and the two-group holding frame 21 do not overlap when viewed from the optical axis direction, the sensor support member 26 cannot regulate the floating of the two-group holding frame 21. Therefore, in the present embodiment, a locked portion 22h is formed on the two-group floor 22 in this region, and the protrusion 21f of the two-group holding frame 21 is arranged to contact the imaging surface side. When assembling the two-group holding frame 21 to the two-group floor 22, it is assembled from the subject side so that the protrusion 21f passes under the locked portion 22h.

[0039] In the present embodiment, since the locked portion 22h is formed on the two-group floor 22 without separately preparing parts, it is possible to save space without requiring screws, adhesives, etc. for fixing additional parts, and the degree of freedom in arranging parts other than the regulating members is also ensured. The locked portion 22h of the two-group floor 22 is arranged on a line (line A-A in FIG. 7) that symmetrically bisects the magnet 21a and the hook locking portion 21b of the two-group holding frame 21, and together with the regulation surface 26f of the sensor support member 26, surrounds the center of gravity (21h) of the two-group holding frame 21. As a result, it is possible to prevent floating in a well-balanced manner, and if it is arranged near the lens, space can be saved, and the risk of the lens colliding with other parts can be reduced.

[0040] Further, as shown in FIG. 10, the two-group holding frame 21 is restricted from moving in a plane perpendicular to the optical axis by its outer peripheral surface 21e and the contact surface 22g of the two-group floor 22. The protrusion 21f of the two-group holding frame 21 and the engaged portion 22h of the two-group floor 22 are always overlapped as viewed from the optical axis direction. FIG. 8 shows a state where the overlapping amount between the protrusion 21f of the two-group holding frame 21 and the engaged portion 22h of the two-group floor 22 is minimized.

[0041] Further, the two-group floor 22 restricts the movement of the two-group holding frame 21 in a direction orthogonal to the optical axis direction of the two-group holding frame 21 within a predetermined range, and the two-group holding frame 21 can be restricted from moving in the optical axis direction within the predetermined range.

[0042] In the present embodiment, when the one-group lens barrel 1 in which the two-group lens L2 and the one-group lens L1 are closest to each other is retracted, the movement range of the two-group holding frame 21 is further restricted by the contact surface 6c at the rear end of the aperture unit 6 and the outer peripheral surface 21g at the tip of the two-group holding frame 21 (see FIGS. 3 and 4). That is, the protrusion 21f of the two-group holding frame 21 and the engaged portion 22h of the two-group floor 22 are sufficiently engaged.

[0043] As described above, the preferred embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made within the scope of the gist thereof. In the above-described embodiments, an example of applying the present invention to a camera which is an imaging device including an image blur correction device has been described. However, the present invention can also be applied to various electronic devices and optical devices such as smartphones, tablet terminals, and other portable terminals having an imaging function capable of image blur correction, and optical devices such as binoculars.

[0044] <Addendum> The disclosure of the present embodiment includes the following configurations. (Configuration 1) In an image blur correction device including a lens holding member that holds an image blur correction lens so as to be relatively movable in a plane perpendicular to the optical axis direction of the optical system of the device with respect to a floor member, and a sensor support member that supports a sensor for detecting the position of the lens holding member, the lens holding member, An image shake correction device, characterized in that movement in the optical axis direction is restricted between a first part of the sensor support member and a second part other than the sensor support member on the side opposite to the center of gravity of the lens holding member with respect to the first part, with the optical axis therebetween. (Configuration 2) The protrusion of the lens holding member and the engaged portion of the floor member are configured to be engageable. The image shake correction device according to Configuration 1, characterized in that the protrusion and the engaged portion are configured to always overlap when viewed in the optical axis direction. (Configuration 3) When the lens barrel is retracted, the range of movement of the lens holding member is further restricted by the contact surface at the rear end of the aperture unit disposed closer to the subject side than the lens holding member and the outer peripheral surface at the tip of the lens holding member. The image shake correction device according to Configuration 1 or 2, characterized in that it is a configuration. (Configuration 4) The image shake correction device according to Configuration 1 or 2, characterized in that the second part is integrally formed with the floor member. (Configuration 5) The floor member and the lens holding member are provided with corresponding hook engaging portions. The image shake correction device according to Configuration 1 or 2, characterized in that a plurality of non-magnetic balls are sandwiched between the lens holding member and the floor member by locking the corresponding hook engaging portions with an urging member. (Configuration 6) The image shake correction device according to Configuration 5, characterized in that the first part and the second part are on the opposite side of the ball with respect to the lens holding member. (Configuration 7) The floor member restricts movement of the lens holding member in a direction orthogonal to the optical axis direction within a predetermined range. The image shake correction device according to Configuration 1 or 2, characterized in that movement of the lens holding member in the optical axis direction is restricted within the predetermined range. (Configuration 8) The image shake correction device according to Configuration 1 or 2, characterized in that the second part is in the vicinity of the correction lens. (Configuration 9) The image blur correction device according to Configuration 1 or 2, wherein the sensor support member is entirely arc-shaped. (Configuration 10) The lens holding member includes two magnets to be detected by the sensor, The image blur correction device according to Configuration 1 or 2, wherein the first part is in the vicinity of the two magnets. (Configuration 11) The image blur correction device according to Configuration 1 or 2, wherein the sensor support member and the floor member are fixed by snap fit. (Configuration 12) An imaging device including the image blur correction device according to Configuration 1 or 2, capable of correcting image blur with the image blur correction device for a captured image.

Explanation of Reference Numerals

[0045] 1 Group 1 lens barrel 2 Group 2 unit 9 Cam barrel 10 Straight barrel 10a Straight key L2 Group 2 lens 21 Group 2 holding frame 21c Contact surface 21d Contact surface 21a Magnet 21b Hook locking part 21f Projection 22 Group 2 floor 22c Hook locking part 22d Claw part 22e Claw part 22f Positioning part 22h Locked part 23 Coil unit 24 Ball 25 Spring 26 Sensor support member 26a Positioning part 27a Hall element 21c, 21d Contact surface 27 Group 2 FPC

Claims

1. An image shake correction device comprising: a lens holding member that holds an image shake correction lens so as to be relatively movable within a plane orthogonal to the direction of the optical axis of the optical system of the device with respect to a floor member; and a sensor support member that supports a sensor for detecting the position of the lens holding member. The lens holding member is configured such that movement in the optical axis direction is restricted between a first portion of the sensor support member and a second portion other than the sensor support member on the side opposite to the center of gravity of the lens holding member with respect to the first portion across the optical axis. The image shake correction device is characterized by this.

2. The protrusion of the lens holding member and the engaged portion of the floor member are configured to be engageable, and the protrusion and the engaged portion are configured to always overlap when viewed from the optical axis direction. The image shake correction device according to claim 1 is characterized by this.

3. When the lens barrel is retracted, the movement range of the lens holding member is further restricted by the contact surface at the rear end of the aperture unit disposed on the subject side of the lens holding member and the outer peripheral surface at the tip of the lens holding member. The image shake correction device according to claim 1 or 2 is characterized by this configuration.

4. The second portion is formed integrally with the floor member. The image shake correction device according to claim 1 or 2 is characterized by this.

5. The floor member and the lens holding member are provided with corresponding hook engaging portions, and the corresponding hook engaging portions are locked by a biasing member, so that a plurality of non-magnetic balls are sandwiched between the lens holding member and the floor member. The image shake correction device according to claim 1 or 2 is characterized by this.

6. The first portion and the second portion are on the opposite side of the ball across the lens holding member. The image shake correction device according to claim 5 is characterized by this.

7. The floor member restricts movement of the lens holding member in a direction orthogonal to the optical axis direction within a predetermined range. The image blur correction device according to claim 1 or 2, wherein the lens holding member is restricted from moving in the optical axis direction within the predetermined range.

8. The image blur correction device according to claim 1 or 2, wherein the second part is in the vicinity of the correction lens.

9. The image blur correction device according to claim 1 or 2, wherein the sensor support member is entirely in an arc shape.

10. The lens holding member includes two magnets to be detected by the sensor, The image blur correction device according to claim 1 or 2, wherein the first part is in the vicinity of the two magnets.

11. The image blur correction device according to claim 1 or 2, wherein the sensor support member and the floor member are fixed by a snap fit.

12. An imaging device including the image blur correction device according to claim 1 or 2, capable of correcting image blur with the image blur correction device for a captured image.

Images