JP2019095627A - Tremor-proof lens barrel - Google Patents

Abstract

A shift unit of a lens driving device is required to have a structure capable of switching between locked and unlocked states of a shift member on a plane perpendicular to the optical axis. In such a shift unit, both the locking structure of the shift member and the shift driving portion must be arranged around the lens holding portion. If the engaging structure and the shift drive are arranged side by side from the optical axis in the radial direction, the size of the shift unit in the radial direction increases. Also, if they are arranged so as to overlap each other in the optical axis direction, the size of the shift unit in the radial direction can be prevented from increasing, but the thickness of the shift unit in the optical axis direction increases. This hinders efforts to reduce the size and diameter of the lens barrel. SOLUTION: Two sets of locking members and contact shapes are provided on the side substantially opposite to the shift driving part with the optical axis in between when viewed in the direction of the optical axis. By driving such that the spacing between the locking members changes, the shift member is locked by coming into contact with the contact shape. [Selection drawing] Fig. 1

Description

  The present invention relates to an image shake correction apparatus which shifts and moves a lens in an optical axis orthogonal plane to correct an image shake caused by so-called camera shake in an optical apparatus such as a digital camera or digital video camera.

  In the lens barrel of an optical device such as a digital camera, shift of the shake correction lens group in the plane orthogonal to the optical axis is one of the methods for performing optical image stabilization by correcting the shift of the optical axis caused by camera shake during shooting. There is a method of moving it.

  Patent Document 1 discloses an example of a drive mechanism for moving a shake correction lens group. This shake correction device is a so-called moving coil type shift unit (shake correction device), in which a drive magnet is disposed on the fixed base member, and a yoke and a coil are disposed on the movable shift member. Also, three balls are disposed between the base member and the shift member, and the shift member is biased against the base member by the magnetic attraction force acting between the drive magnet and the yoke to hold the balls. Therefore, when the coil is energized, the shift member shifts and moves in the plane orthogonal to the optical axis while rolling the ball by Lorentz force acting between the coil and the drive magnet, and shake correction is performed. Here, since the movement of the shift member in the optical axis direction is restricted by the ball, the shift member moves only in the optical axis orthogonal plane.

  There is also a need for a mechanism that can switch the operation and non-operation of shake correction of such a shift unit according to the photographer's intention and various shooting conditions. When shake correction is not performed, in order to prevent the correction lens group from unnecessarily moving on the optical axis orthogonal plane and deteriorating the optical performance, it is desirable to lock so as to restrict the movement of the shift member. Patent Document 2 discloses an example of a mechanism for restricting the movement of the shift member in the plane orthogonal to the optical axis. In this mechanism, a disk member having four cam grooves and a locking member engaged with the cam grooves are disposed outside the lens holding portion.

  The contact shape between the locking member and the shift member does not contact when the shift unit performs shake correction. However, when the shake correction operation is not performed and the movement of the shift member in the plane orthogonal to the optical axis is limited, the disk member is driven to rotate around the optical axis. Thus, since the locking member engaged with the cam groove abuts on the contact shape of the shift member, it is possible to limit the movement of the shift member in the plane orthogonal to the optical axis.

Japanese Patent Laid-Open No. 2002-196382 JP, 2013-45068, A

  In such a shift unit, it is necessary to arrange both the locking structure of the shift member and the shift drive around the lens holder. When the locking structure portion and the shift driving portion are arranged side by side radially outward from the optical axis, the size of the shift unit in the radial direction is increased. If the shift unit is arranged so as not to line up in the radial direction but to overlap in the optical axis direction, the increase in the radial size of the shift unit can be suppressed, but the thickness in the optical axis direction of the shift unit will increase. . This hinders the reduction in size and diameter of the lens barrel.

  When viewed in the optical axis direction, two sets of locking members and abutment shapes are provided on the substantially opposite side of the shift driving portion with the optical axis interposed therebetween. It is possible to lock on the optical axis orthogonal plane of the shift member by driving the locking member to abut on the contact shape so that the axis between the pins provided on the locking member changes. .

  In the present invention, the locking structure for locking the shift member on the optical axis is disposed on the opposite side of the optical axis to the shift driving portion. Therefore, the locking structure portion and the shift driving portion do not overlap in the optical axis direction view, and the diameter and thickness of the shift unit can be reduced.

An exploded perspective view of a shift unit according to a first embodiment of the present invention Sectional view of a lens drive device having a shift unit according to an embodiment of the present invention Electric circuit configuration of an optical apparatus using a lens driving device according to an embodiment of the present invention Explanatory drawing of the actuator part in the shift unit in the Example of this invention Explanatory drawing of latching of the shift member in the shift unit of 1st Example of this invention. An enlarged view of the locking structure in the shift unit according to the first embodiment of the present invention Explanatory drawing of the latching of the shift member in the shift unit of 2nd Example of this invention. Explanatory drawing of latching of the shift member in the shift unit of 3rd Example of this invention. Enlarged view of the locking structure in the shift unit according to the third embodiment of the present invention

(Example)
FIG. 2 shows a lens driving device having a bar / sleeve structure according to an embodiment of the present invention. The lens driving device is attached to, or integrally used with, a photographing device (optical apparatus) such as a video camera or a digital still camera. This lens drive device is a lens drive device having a variable power optical system having a convex-concave-convex-convex 4-group configuration. L1 is a fixed first group lens, L2 is a second group lens that performs magnification change operation by moving in the direction of the optical axis, L3 is a third group lens that moves in a plane orthogonal to the optical axis to perform shake correction, L4 Denotes a fourth lens unit that performs focusing operation by moving in the optical axis direction. Reference numeral 1 denotes a first lens unit holding the first lens unit L1, 2 denotes a second lens unit moving frame for holding the second lens unit L2, and 3 denotes a shift unit for moving the third lens unit L3 in the optical axis orthogonal direction 4) is a four-group moving frame that holds the fourth group lens L4, and 6 is a CCD holder to which an imaging device such as a CCD is fixed.

  The first group barrel 1 and the CCD holder 6 are screwed to the fixed barrel 5. Two guide bars (not shown) are positioned and fixed by the fixed barrel 5 and the CCD holder 6, and movably support the second group moving frame 2 in the optical axis direction. Similarly, two guide bars (not shown) support the fourth lens unit moving frame 4 movably in the optical axis direction. The shift unit 3 is positioned on the fixed cylinder 5 and fixed by screws. An aperture device 12 changes the aperture diameter of the optical system, and moves the two aperture blades in opposite directions to change the aperture diameter.

  The second lens group L2 is driven in the optical axis direction by a zoom motor (not shown) to perform a variable power operation. The zoom motor has a lead screw coaxial with the rotating rotor. A rack attached to the second lens group moving frame 2 is engaged with the lead screw, and the second lens group L2 is driven in the optical axis direction by the rotation of the rotor.

  Further, the torsion coil spring biases the play of each of the second group moving frame 2, the two guide bars, the rack and the lead screw to prevent the play of the fitting or the meshing. The zoom motor is fixed to the fixed barrel 5 with a screw. The fourth lens unit L4 is driven in the optical axis direction by a focus motor (not shown) to perform a focusing operation. The focus motor has a lead screw coaxial with the rotating rotor. A rack attached to the fourth lens unit moving frame 4 is engaged with the lead screw, and the fourth lens unit L4 is driven in the optical axis direction by the rotation of the rotor.

  Further, the torsion coil spring biases the play of each of the fourth group moving frame 4, the two guide bars, the rack, and the lead screw to prevent the play of the fitting or the meshing. The focus motor is fixed to the CCD holder 6 with two screws.

  A photo interrupter that optically detects the movement of the light shielding portion formed in the second group moving frame 2 in the optical axis direction is a zoom reset switch for detecting that the second group lens L2 is positioned at a reference position. Used as A photo interrupter that optically detects the movement of the light shielding portion formed in the fourth group moving frame 4 in the optical axis direction is a focus reset switch for detecting that the fourth group lens L4 is at the reference position. Used as

  Next, the configuration of the shift unit 3 for moving the third lens unit L3 in the direction orthogonal to the optical axis will be described with reference to FIG. The third group lens L3 includes a drive actuator for correcting image blurring due to angle change in the pitch direction (vertical direction of the lens barrel) and image blurring due to angle change in the yaw direction (horizontal direction of the lens barrel). It is driven in a plane orthogonal to the optical axis by a drive actuator for correction. In the pitch direction and the yaw direction, each actuator is independently driven and controlled based on information from each position sensor and a shake detection sensor. In addition, although the pitch direction actuator and the position sensor, and the yaw direction actuator and the position sensor are arranged to form an angle of 90 degrees with each other, since the configuration itself is the same, only the pitch direction will be described below. Do.

  Also, unless otherwise indicated, elements in the pitch direction are suffixed with p, and elements in the yaw direction are suffixed with y. A shift moving frame 21 has a function of holding the third lens unit L3 and is displaced in the direction orthogonal to the optical axis to correct shake. A magnet 24 which serves both for driving and for position detection is press-fitted and held in the shift moving frame 21. By pressing the magnet 24 into the shift moving frame 21 and incorporating it, the relative positional relationship between the shift moving frame 21 and the magnet 24 does not shift after the incorporation. For this reason, the position of the magnet 24, which also serves as the position detection function, is determined to a position fixed with respect to the shift moving frame 21 holding the third group lens L3, and the magnet 24 positions the third group lens L3. Can be accurately detected.

  A ball 27 is disposed between the shift base 22 and the ball rolling surface 21a provided on the shift moving frame 21. Three balls 27 are disposed around the optical axis in a plane orthogonal to the optical axis. The ball 27 is rotatably held by a ball holder portion 22 a formed on the shift base 22. A coil 25 is adhesively fixed to the shift base 22. Further, a fixed yoke 26 is press-fitted and held by the shift base 22. The force for keeping the ball 27 in contact with the shift base 22 (the end surface in the optical axis direction of the ball folder portion 22 a) and the ball rolling surface 21 a of the shift moving frame 21 is determined by the magnet 24 and the fixed yoke 26. It is an adsorptive force acting between them.

  As the shift moving frame 21 is urged in the direction approaching the shift base 22 by this adsorption force, the three balls 27 are provided at three end faces in the optical axis direction of the three ball holder portions 22a and the ball rolling surface 21a. It abuts in the state of pressing against. Each surface on which the three balls 27 abut spread in a direction perpendicular to the optical axis of the photographing optical system. Since the nominal diameters of the three balls 27 are the same, the third group lens L3 held by the shift moving frame 21 is made small by suppressing the positional difference in the optical axis direction between the end faces in the optical axis direction in the three ball folders 22a. Can be moved in a plane orthogonal to the optical axis without causing a tilt with respect to the optical axis.

  In addition, as a material used for these balls, nonmagnetic materials, such as SUS304, are suitable, for example so that it may not adsorb | suck to a magnet. Next, position detection of the shift moving frame 21 and the third lens unit L3 will be described. A hall element 28p converts magnetic flux density into an electric signal, and is soldered to a flexible printed cable (hereinafter referred to as an FPC) (not shown). The FPC is positioned and fixed relative to the shift base 22.

  The position sensor which detects the position of the shift movement frame 21 and the 3rd group lens L3 is formed of the following structures. When the shift moving frame 21 and the third lens group L3 are driven in the longitudinal direction or the lateral direction, the Hall element 28p detects a change in the magnetic flux density of the magnet 24p, and an electrical signal indicating the change in the magnetic flux density is output. . Based on the output of the Hall element 28p, a control circuit (not shown) can detect the positions of the shift moving frame 21 and the third group lens L3. The magnet 24p is a driving magnet and is also used as a position detection magnet.

  Next, an actuator for driving the shift moving frame 21 and the third lens unit L3 will be described with reference to FIG. In FIG. 4, parts other than the shift base 22, the movable yoke 23, the magnet 24, the coil 25, the fixed yoke 26, and the hall element 28 are not shown. FIG. 4 (b) is a cross section taken along the line AA shown in FIG. 4 (a). As shown in FIG. 4B, 24p is a magnet magnetized in two poles and 23p is a movable yoke for closing the magnetic flux on the front side in the optical axis direction of the magnet 24p. The movable yoke 23p is fixed by suction to the magnet 24p. Reference numeral 25p denotes a coil adhesively fixed to the shift base 22, and 26p denotes a fixed yoke for closing the magnetic flux on the rear side in the optical axis direction of the magnet 24p. The fixed yoke 26 p is disposed on the opposite side of the coil 24 p to the magnet 24 p and is held by the shift base 22.

  A magnetic circuit is formed by the magnet 24p, the movable yoke 23p, the fixed yoke 26p, and the coil 25p. In addition, as a material used for these yokes, magnetic bodies, such as SPCC etc. which have high magnetic permeability, are suitable. When current flows through the coil 25p, Lorentz force is generated due to repulsion between magnetic lines of force generated in the magnet 24p and the coil 25p in a direction substantially orthogonal to the magnetization boundary of the magnet 24p, and the shift movement frame 21 is orthogonal to the optical axis Move in the direction. This is a so-called moving magnet type actuator. Further, as described above, the change of the magnetic flux density due to the position change of the magnet 24p is detected by the Hall element 28p, and the position detection of the shift movement frame is performed.

  Since the actuator of such a configuration is disposed in the longitudinal direction and the lateral direction as shown in FIG. 1, the shift moving frame 21 can be driven in two optical axis orthogonal directions substantially orthogonal to each other. . Further, the shift movement frame 21 can be freely moved within a predetermined range in the optical axis orthogonal plane by the drive combination of the vertical direction and the horizontal direction. The friction when the shift moving frame 21 moves in the direction orthogonal to the optical axis is between the ball 27 and the ball rolling surface 21a and the ball 27 and the ball folder unless the ball 27 abuts on the wall of the ball folder portion 22a. It is only the rolling friction which generate | occur | produces between the parts 22a, respectively.

  Therefore, the shift moving frame 21 holding the third lens unit L3 can move extremely smoothly in the plane orthogonal to the optical axis despite the adsorption force acting, and the minute movement amount control is also performed. It becomes possible. By applying lubricating oil to the balls 27, the frictional force can be further reduced.

  Next, the locking of the shift moving frame 21 in the first embodiment of the present invention will be described using FIGS. 5 and 6. FIG. 5A shows a state in which the shift movement frame 21 is not locked and the third lens unit L3 is on the optical axis, and FIG. 5B is a state locked. FIG. 6 is an enlarged view of the locking structure of the shift moving frame constituted by the locking members 31 and 32, the abutment shapes 21b and 21c, the lock motor 30, and the gear 30b, with the lock motor 30 not shown. . The lock motor 30 is fixed to the shift base 22. The locking members 31 and 32 are held by the shift base 22 so as to be movable only in the longitudinal X direction. The contact shapes 21b and 21c provided on the shift moving frame 21 are circular through holes when viewed in the optical axis direction.

  The contact shapes 21b and 21c are disposed on the substantially opposite side of the shift driving unit including the movable yoke 23, the magnet 24, the coil 25, and the fixed yoke 26 with respect to the optical axis. The cylindrical pins 31a provided on the locking members 31 and 32 pass through the contact shape 21b, and the pins 32a pass through the contact shape 21c in the optical axis direction. In the state shown in FIG. 5 (a), the cylinders of the pins 31a and 32a are coaxial with the circular holes of the contact shapes 21b and 21c. Further, even if the shift moving frame 21 moves within a predetermined range in the optical axis orthogonal plane by the image blur correction operation, the pins 31a and 32a and the contact shapes 21b and 21c do not come in contact with each other.

  Therefore, the movement of the shift moving frame 21 in the plane orthogonal to the optical axis is not restricted by the locking members 31 and 32. Here, when the lock motor 30 is controlled to be energized and rotated by a flexible member and a control circuit (not shown), the gear 30 b attached to the output shaft 30 a of the lock motor 30 is rotated. Further, a part of the locking members 31 and 32 is geared to the gear 30b. Therefore, when the gear 30b rotates, the locking members 31 and 32 move in the longitudinal direction and in the opposite direction to each other, and the distance between the pins 31a and 32a changes. The state in which the pins 31a and 32a are in contact with the contact shape 21b by the rotation of the lock motor 30 is shown in FIG. 5 (b). When viewed in the optical axis direction, the contact shapes 21b and 21c are circular, and the line connecting the centers of the circles overlaps the line connecting the central axes of the cylinders of the pins 31a and 32a.

  Therefore, when the pins 31a and 32a are in contact with the contact shapes 21b and 21c, the shift movement frame 21 can not move on the plane orthogonal to the optical axis. In this manner, the locking on the optical axis orthogonal plane of the shift moving frame 21 is performed. Further, during locking, control is performed by the control circuit (not shown) so that the lock motor 30 is energized so as not to shorten the distance between the pins 31a and 32a. Thus, even if a force in the direction perpendicular to the optical axis is applied to the shift moving frame 21 by vibration or impact, the shift moving frame 21 can be locked unless the distance between the pins 31a and 32a changes.

  Further, in the above embodiment, the rotation control of the lock motor 30 is performed such that the distance between the pins 31a and 32a is longer than in the non-locked state. However, since the contact shapes 21b and 21c are circular, control is performed so that the distance between the axes becomes short and the pins 31a and 32a contact the contact shapes 21b and 21c. Stop is possible.

  Further, although the contact shapes 21b and 21c are circular, as long as there is a place where the pins 31a and 32a abut, it may be a circular shape instead of a circle. In addition, when a motor having a cogging force such as a stepping motor is used as the lock motor 30, it is possible to maintain the locked state only by the cogging force.

  Alternatively, the stepping motor may be energized only when an impact or vibration is detected by an acceleration sensor of the camera body or a position sensor of the shift unit. As a result, compared with the case where the locked state is maintained only by the cogging force, it is possible to maintain the locked state by maintaining the distance between the axes of the pins even with a stronger impact. Further, the shift frame 21 can be locked by directly operating the locking member manually instead of using an electric actuator such as a motor.

  FIG. 7 shows a second embodiment of the present invention. In this embodiment, the contact shapes 21b and 21c are square holes. The other configuration is the same as that of the first embodiment. The locking members 31 and 32 are driven by the gear 30b attached to the lock motor 30, and the pins 31a and 32a contact the corners of the contact shapes 21b and 21c. The straight line connecting the corners of the contact shapes 21b and 21c with which the pins 31a and 32a abut, respectively, overlaps the straight line connecting the centers of the pins 31a and 32a in the optical axis direction. Therefore, when the pins 31a and 32a are in contact with the contact shapes 21b and 21c, the shift movement frame 21 can not move on the plane orthogonal to the optical axis. In this manner, the locking on the optical axis orthogonal plane of the shift moving frame 21 is performed.

  8 and 9 show a third embodiment of the present invention. FIG. 9 is an enlarged view of the locking structure of the shift moving frame composed of the locking members 31 and 32, the abutment shapes 21b and 21c, the lock motor 30, and the gear 30b, with the lock motor 30 not shown. . In this embodiment, the output shaft direction of the lock motor is parallel to the optical axis direction. The other configuration is the same as that of the first embodiment. The locking members 31 and 32 are driven by the gear 30b attached to the lock motor 30, and move along the respective longitudinal directions X1 and X2. When the pins 31a and 32a are in contact with the contact shapes 21b and 21c, the straight line connecting the centers of the circles of the contact shapes 21b and 21c and the straight line connecting the centers of the pins 31a and 32a overlap in the optical axis direction view ing.

  Therefore, when the pins 31a and 32a are in contact with the contact shapes 21b and 21c, the shift movement frame 21 can not move on the plane orthogonal to the optical axis. In this manner, the locking on the optical axis orthogonal plane of the shift moving frame 21 is performed.

  FIG. 3 shows an electric circuit configuration of an optical apparatus using the lens driving device in the embodiment of the present invention. In the optical device 120, the image of the subject formed on the CCD 113 through the lens is subjected to processing such as predetermined amplification and γ correction in the camera signal processing circuit 101. From the video signal subjected to the predetermined processing, the contrast signal of the predetermined region is taken out through the AF gate 102 or the AE gate 103. In particular, the contrast signal that has passed through the AF gate 102 generates one or more outputs for high frequency components by the AF circuit 104. In accordance with the signal level of the AE gate 103, the CPU 105 determines whether the exposure is optimum or not. If the exposure is not optimum, the drive source is selected at the optimum aperture value or shutter speed via the aperture shutter drive source 109. To drive.

  In the autofocus operation, the CPU 105 controls the focus drive source drive circuit 111 as a focus drive source so that the output generated by the AF circuit 104 exhibits a peak. Further, in order to obtain proper exposure, the CPU 105 drives the aperture shutter drive source 109 so that the output of the aperture encoder 108 becomes this predetermined value with the average value of the signal output passing through the AE gate 103 as the predetermined value. Control to control the aperture diameter.

  A focus origin sensor 106 using an encoder such as a photo interrupter detects an absolute reference position for detecting an absolute position of the focus lens group in the optical axis direction. A zoom origin sensor 107 using an encoder such as a photo interrupter detects an absolute reference position for detecting an absolute position of the zoom lens group in the optical axis direction. The detection of the shake angle in the imaging device is performed, for example, by integrating the output of an angular velocity sensor such as a vibrating gyroscope fixed to the imaging device.

  The respective outputs of the shake angle detection sensor 114 in the pitch direction and the shake angle detection sensor 115 in the yaw direction are processed by the CPU 105. In response to the output from the pitch deflection angle detection sensor 114, the pitch coil drive circuit 116 is drive-controlled to control energization of a pitch coil (not shown). Further, according to the output from the yaw deflection angle detection sensor 115, drive control of the yaw coil drive circuit 117 is performed, and energization control to the yaw coil (not shown) is performed.

  By the above control, the shift frame (not shown) is shifted in the optical axis orthogonal plane. The respective outputs of the position detection sensor 118 in the pitch direction and the position detection sensor 119 in the yaw direction are processed by the CPU 105. When the correction lens unit L3 shifts and moves, the passing light flux in the lens drive device is bent. Therefore, by moving the correction lens unit L3 so as to bend the passing light flux by a bending amount that cancels out, in a direction that cancels out the displacement of the subject image on the CCD 113 which originally occurs due to the occurrence of shake in the photographing device It is possible to perform so-called shake correction in which the subject image being formed does not move on the CCD 113 even if the camera shakes.

  The CPU 105 corresponds to the difference between the shake signal of the photographing apparatus obtained by the pitch shake angle detection sensor 114 and the yaw shake angle detection sensor 115 and the shift amount signal obtained from the pitch position detection sensor 118 and the yaw position detection sensor 119. The shift frame 3a is shifted by the pitch coil drive circuit 116 and the yaw coil drive circuit 117 based on the signal obtained by performing amplification and appropriate phase compensation on the signal to be input. By this control, the position of the correction lens unit L3 is controlled so that the above difference signal becomes smaller, and the target position is maintained.

  In the above embodiment, the case where the shift movement frame 21 is driven using the moving magnet type actuator has been described. However, in the present invention, the shift locking structure may be provided on the substantially opposite side of the shift driving portion and the optical axis. Therefore, it is needless to say that the present invention can be applied to the case of using a so-called moving coil type actuator in which the coil 25 is disposed on the shift movement frame 22 side and the magnet 24 is disposed on the shift base 21 side.

  Further, in the present invention, it is sufficient if the locking member can be driven so that the distance between the axes of the two pins changes. Therefore, it is also possible to use a linear actuator instead of the drive unit using the motor / gear as used in the above embodiment.

  Further, in the present invention, the contact shape and the pin may be in the contact state in the locked state of the shift moving frame and in the non-engaged state as the non contact state. Therefore, the contact shape may be filled with a viscoelastic material such as gel, and in the non-locking state, the locking structure may be used as a damping mechanism in the control of the shake correction operation of the shift moving frame.

L1. First group lens
L2. Second group lens
L3. Third group lens (correction lens group)
L4. Fourth group lens
1.1 group lens barrel
2.2 group movement frame
3. Shift unit
4.4 group movement frame
Five. Fixed cylinder
6. CCD holder
20. Shift cover
twenty one. Shift moving frame
21a. Ball rolling surface
21b. Contact shape
21c. Contact shape
twenty two. Shift base
22a. Ball folder
twenty three. Movable yoke
twenty four. magnet
twenty five. coil
26. Fixed yoke
27. ball
28. Hall element
29. Shift cover fixing screw
30. Lock motor
30a. Output axis
30b. gear
31. Locking member
31a. pin
32. Locking member
32a. pin
101. Camera signal processing
102. AF gate
103. AE gate
104. AF circuit
105. CPU
106. Focus origin sensor
107. Zoom origin sensor
108. Aperture encoder
109. Aperture shutter drive source
110. Zoom drive source
111. Focus drive source drive circuit
112. Zoom drive source drive circuit
113. CCD
114. Pitch angle detection sensor
115. Yaw angle detection sensor
116. Pitch coil drive circuit
117. Yaw coil drive circuit
118. Pitch position detection sensor
119. Yaw position sensor
120. Optical equipment

Claims (4)

A. A shift member that holds the shake correction lens and can shift in a plane orthogonal to the optical axis with respect to the apparatus main body;
B. In one of the shift member and the apparatus main body, a drive magnet is provided,
C. Hold the coil and the yoke on the other side,
D. A shake correction device that performs shift movement of the shift member by energizing the coil to correct an image shake,
E. There are two sets of shift drive parts consisting of the drive magnet, the coil and the yoke,
F. The shift drivers are disposed to be orthogonal to each other,
G. There is an abutting shape on the opposite side of the shift member with respect to the shift driving portion and the optical axis,
H. There is a locking member on the opposite side of the shift drive portion of the device body with respect to the optical axis,
I. The locking member is movable with respect to the apparatus main body in an optical axis orthogonal plane to be able to abut on the contact shape,
J. There are two sets of locking mechanism parts consisting of the contact shape and the locking member,
K. As described in L., there is a locking mechanism driving portion that drives the locking member so that the distance between the locking members changes in the optical axis direction view. Shake correction device that features. A. In the optical axis direction view, the location where the contact shape and the locking member abut is
B. At least one of the contact shape and the locking member has a curved shape, as described in C.3. The shake correction device according to claim 1, characterized in that A. In the optical axis direction view, the location where the contact shape and the locking member abut is
B. At least one of the abutting shape and the locking member has a shape in which two surfaces intersect each other to have a corner portion as described in C. The shake correction device according to claim 1, characterized in that A. A lens barrel having the shake correction device according to any one of claims 1 to 3.