JP2016001312A - Image blur correction device and lens drive device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image blur correction device and a lens drive device capable of performing highly accurate image blur correction.SOLUTION: An image blur correction device comprises: a base member 2; a movable member 10 arranged on the base member 2 and moves within a plane orthogonal to an optical axis C; movable member driving means 11 arranged on the base member 2 and the movable member 10 and used for moving the movable member 10 in a direction orthogonal to the optical axis C; and restriction means restricting movement of the movable member 10 within the plane orthogonal to the optical axis C. The restriction means restricts the movement of the movable member 10 by using two movement loci of a straight movement locus that moves in a direction orthogonal to the optical axis C and a rotational movement locus that rotates with a point on the straight movement locus as a center of rotation.

Description

  The present invention relates to an image blur correction device that corrects image blur by moving an imaging optical system or an image sensor in a direction orthogonal to an optical axis, and a lens driving device using the image blur correction device.

  Conventionally, there is JP, 2006-174588, A as a technique of such a field. This publication describes a lens unit having an actuator. The actuator includes a fixed plate fixed to the lens barrel, a movable frame that holds an image blur correction lens, and a steel ball that supports the movable member. In the actuator configured as described above, the movable frame is moved with respect to the fixed plate. Thereby, since the image blur correction lens moves in a direction orthogonal to the optical axis, it is possible to suppress the disturbance of the image formed on the film surface.

JP 2006-174588 A

  In the actuator described in Patent Document 1, the movable frame has three degrees of freedom that combines two degrees of freedom of translation and one degree of freedom of rotation. The movable frame can freely move on a two-dimensional plane and can rotate about a desired position. On the other hand, in order to move the movable frame to an arbitrary position on the fixed plate, the movable frame only needs to have two degrees of freedom. When having such a degree of freedom, the movable frame may move or rotate in an unintended direction. Therefore, the actuator described in Patent Document 1 has a problem that the accuracy of image blur correction is reduced by the movement or rotation of the movable frame in the unintended direction.

  SUMMARY An advantage of some aspects of the invention is that it provides an image blur correction apparatus capable of performing image blur correction with high accuracy and a lens driving device using the image blur correction apparatus.

  In order to solve the above problems, an image shake correction apparatus according to the present invention includes a base member, a movable member that is disposed on the base member and moves in a plane orthogonal to the optical axis, and the base member and the movable member. A restricting means, comprising: a movable member driving means that is disposed and moves the movable member in a direction orthogonal to the optical axis; and a restricting means that restricts the movement of the movable member in a plane perpendicular to the optical axis. Restricts the movement of the movable member by two movement loci, a linear movement locus that moves in a direction orthogonal to the optical axis and a rotational movement locus that rotates around a point on the linear movement locus.

  According to the above-described image shake correction apparatus, the movement of the movable member is restricted by the restriction means to the linear movement to the linear movement locus and the rotation that rotates around the point on the linear movement locus. Accordingly, the degree of freedom of the movable member is limited to two degrees of freedom including one degree of freedom of translation and one degree of freedom of rotation. As a result, it is possible to suppress unnecessary rotation about an unintended point on the plane as a rotation center, so that it is possible to perform image blur correction with high accuracy. Further, since it is possible to eliminate the need for installing parts for correcting the movement of the movable member due to unnecessary rotation, the apparatus can be reduced in size without increasing the number of parts required for the apparatus.

  The restricting means is provided on one of the base member and the movable member, and is disposed on the other of the base member and the movable member, and is inserted into the groove or the through hole. The pin part or spherical part made may be provided.

  As described above, by inserting the pin portion or the spherical portion into the groove or the through hole, the movable member is smoothly guided in the direction of the linear movement locus, and rotates around the pin portion or the spherical portion. Therefore, the movement of the movable member can be made highly accurate.

  The groove or the through hole may have a pair of side walls that are parallel to the linear movement locus and face each other, and the pin portion may be in sliding contact with the pair of side walls. Thus, since the pin portion is in line contact with the side wall of the groove or the through hole, the movable member can be prevented from being inclined with respect to the optical axis.

  The groove or the through-hole may have a pair of slopes that are parallel to the linear movement locus and have a V shape, and the pin portion or the spherical portion may be in sliding contact with the pair of slopes. Thus, since the pin portion or the spherical portion makes point contact with the inclined surface of the groove or the through hole, the frictional resistance can be reduced.

  The groove or the through-hole may have a pair of side walls that are parallel to the linear movement locus and face each other, and the spherical portion may be in sliding contact with the opening-side end portions of the pair of side walls. Thus, since the spherical portion makes point contact with the side wall of the groove or the through hole, the frictional resistance can be reduced.

  A lens driving device according to the present invention is disposed on the image blur correction device, the movable member, the lens frame that holds the lens and moves in the direction of the optical axis, the movable member, and the lens frame. Lens driving means for moving the lens in the axial direction.

  According to the lens driving device described above, the movement of the movable member in the plane orthogonal to the optical axis is restricted by the restriction means to linear movement and rotation. Due to this restriction, unnecessary rotation of the lens frame holding the lens around an unintended point as a rotation center is suppressed. Therefore, accurate image blur correction can be performed.

  According to the present invention, accurate image blur correction can be performed.

1 is an exploded perspective view showing an embodiment of a lens driving device using an image blur correction device according to the present invention. It is sectional drawing of the lens drive device shown by FIG. It is a top view of the base member shown by FIG. It is a principal part expanded sectional view of the control means which concerns on embodiment. It is a bottom view of the movable member shown by FIG. It is an enlarged view which shows the movement range of an optical axis. It is sectional drawing which shows the 1st-4th modification of a control means. It is sectional drawing which shows the 5th-9th modification of a control means. It is sectional drawing which shows the 10th-14th modification of a control means.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of an image shake correcting device and a lens driving device according to the invention will be described in detail with reference to the drawings.

  An image shake correction apparatus used for a digital camera changes a relative position between an imaging optical system having a focus adjustment lens or a zoom lens and an imaging element on which light passing through the imaging optical system is imaged. This is a device for correcting image blur. This image shake correction apparatus includes a method of moving an image pickup optical system with respect to a fixed image pickup device and a method of moving an image pickup device with respect to a fixed image pickup optical system. In the present embodiment, a lens driving device that corrects camera shake by moving a focus adjustment mechanism that is an imaging optical system with respect to an imaging element will be described as an example.

  As shown in FIG. 1, a lens driving device 1 having a camera shake correction function includes a box-shaped base member 2 that houses a camera shake correction mechanism 3 and a focus adjustment mechanism 4, and the focus adjustment mechanism 4 is orthogonal to the optical axis C. A camera shake correction mechanism 3 that moves in a plane to correct camera shake, a lens (not shown), a focus adjustment mechanism 4 that moves the lens in the direction of the optical axis C, and a lid for closing the base member 2 A member 5 and a flexible printed board 6 for ensuring electrical connection between the lens driving device 1 and an external circuit are provided. The lens driving device 1 is used by being disposed in front of a CCD (Charge Coupled Device) image sensor or a CMOS (Complementary Metal Oxide Semiconductor) image sensor (not shown) which is an image sensor.

  The above-described base member 2 and the camera shake correction mechanism 3 constitute a camera shake correction device 30. The camera shake correction is an aspect of image shake correction for correcting image shake.

  The base member 2 is a rectangular parallelepiped box-shaped member having a rectangular opening 2 a centered on the optical axis C. Inside the base member 2, a support surface 2b extending perpendicular to the optical axis C is provided. The support surface 2b is provided with a recess 2c and a hole 2g, and the hole 2g is formed between a circular opening 2d centered on the optical axis C and one corner 2h (see FIG. 3). ).

  The camera shake correction mechanism 3 is for correcting camera shake by moving the focus adjustment mechanism 4 attached to the movable member 10 within a plane orthogonal to the optical axis C. The camera shake correction mechanism 3 includes a supporting unit 8 that forms a ball for supporting the movable member 10 having a frame shape, a movable member 10 to which the focus adjusting mechanism 4 is attached, and the movable member 10 in a direction orthogonal to the optical axis C. The movable member driving means 11 to be driven and the restricting means 15 for restricting the movement of the movable member 10 in the base member 2 are provided.

  The support means 8 for movably supporting the movable member 10 in a plane orthogonal to the optical axis C includes three support portions 9. Each support portion 9 includes a metal spherical body 9a that supports the movable member 10, and a pair of sliding plates 9b that sandwich the spherical body 9a and reduce the rolling resistance of the spherical body 9a.

  A movable member 10 for moving the focus adjustment mechanism 4 in a direction orthogonal to the optical axis C is housed inside the base member 2 while being supported by the support means 8. The movable member 10 is a rectangular parallelepiped member having a circular opening 10a centered on the optical axis C. The movable member 10 has a bottom surface 10 c that faces the support surface 2 b of the base member 2.

  As shown in FIG. 5, the bottom surface 10c of the movable member 10 is provided with a recess 10d for fixing one sliding plate 9b. In order to fix the other sliding plate 9b, a recess 2c is formed in the base member 2 at a position corresponding to the recess 10d. A spherical body 9a is disposed between the recess 2c and the recess 10d. The inner diameters of the recesses 2c and 10d are formed larger than the outer diameter of the spherical body 9a. For this reason, the spherical body 9a can roll within the range of the recessed part 2c. In addition, the support part 9 should just be supported so that the movable member 10 can move within a plane.

  The movable member driving means 11 for driving the movable member 10 in a direction orthogonal to the optical axis C includes three actuators 12, 13, and 14. On the diagonal line L1, the actuator 12 and the groove | channel 10b mentioned later are arrange | positioned. The actuator 12 and the groove 10b are provided to face each other with the optical axis C interposed therebetween. The actuator 12 applies a driving force F1 having a directional component along the diagonal line L1 to the movable member 10.

  Actuators 13 and 14 are arranged on another diagonal L2 orthogonal to the diagonal L1. The actuators 13 and 14 are provided to face each other with the optical axis C interposed therebetween. The actuators 13 and 14 apply a driving force F2 having a directional component along the diagonal L2 to the movable member 10.

  The actuators 12, 13, and 14 have the same configuration. Here, the configuration of the actuator 12 will be described as an example. As shown in FIGS. 1 and 2, the actuator 12 includes a magnet 12a and a coil 12b. The magnet 12 a is disposed in the recess 10 r on the bottom surface 10 c of the movable member 10, and the coil 12 b is disposed in the recess 2 p formed on the support surface 2 b of the base member 2. The magnet 12a is disposed so as to face the coil 12b.

  The actuator 12 is disposed between a pair of yoke plates 12c and 12d, one of which is disposed on the magnet 12a side and the other is disposed on the coil 12b side. According to such an arrangement, the magnetic paths of the magnet 12a and the coil 12b are secured. Even when the coil 12b is not energized, the movable member 10 is maintained at a fixed position because a magnetic attractive force acts between the magnet 12a and the yoke plate 12d.

  As shown in FIGS. 3 to 6, the restricting means 15 for restricting the movement of the movable member 10 includes a pin 7 fixed to the base member 2 to form a pin portion, and a groove 10 b provided in the movable member 10. It is comprised by.

  The pin 7 is a cylindrical member extending in the direction of the optical axis C. The base end of the pin 7 is inserted and fixed in a hole 2g formed in the base member 2.

  As shown in FIG. 5, the groove 10 b formed in the movable member 10 is a long groove extending along the diagonal line L <b> 1 in the movable member 10. The groove 10b is formed on the bottom surface 10c at a position corresponding to the position of the hole 2g into which the pin 7 is inserted. By forming at such a position, the pin 7 is inserted into the groove 10b. The width in the direction perpendicular to the longitudinal direction of the groove 10b is set to a width that allows the pin 7 to slide relative to the side surface of the groove 10b. As shown in FIG. 4, the groove 10 b having a rectangular cross-section has a pair of side walls 10 t facing each other for defining a width in which the pin 7 can slide. Further, the groove 10b is set to a depth at which the bottom 10e of the groove 10b and the upper end surface 7a of the pin 7 do not contact each other.

  A pin 7 is inserted into the groove 10b of the movable member 10, and the groove 10b extends along the diagonal line L1. Therefore, the movable member 10 can be linearly moved while being guided in the direction of the linear movement locus T1 set in the direction in which the side wall 10t of the groove 10b extends, and the pin 7 disposed on the linear movement locus T1. Can be rotated along a rotational movement trajectory T2 having the rotation center RC as the center of rotation. That is, the position of the movable member 10 corresponds to being expressed in a circular coordinate system based on one moving radius and one deflection angle. According to this combination of linear movement and rotation, the position of the optical axis C can be accurately moved to a desired position.

  As shown in FIGS. 5 and 6, the movable range S of the optical axis C is based on a distance allowing linear movement and an angle allowing rotation. The distance in which the movable member 10 can move linearly is determined by the length of the groove 10b in the longitudinal direction. The angles at which the movable member 10 can be rotated are notched portions 10y and 10z provided on the outer edge of the movable member 10 and contact portions 2y and 2z provided on the inner wall surface 2x of the base member 2 (see FIG. 3). The contact portions 2y and 2z have surfaces along the longitudinal direction of the groove 10b. The angle at which the movable member 10 can be rotated may be determined by the distance of the spherical body 9a in the recess 2c or the recess 10d.

  As shown in FIG. 1, the focus adjustment mechanism 4 attached to the movable member 10 includes a lens frame 16 that holds a lens (not shown), a plate spring 17 that biases the lens frame 16 in the direction of the optical axis C, 18, a lens driving unit 19 that drives the lens frame 16 in the direction of the optical axis C, and a fixed frame 21 that reinforces the fixed state of the leaf spring 17 to the movable member 10.

  A lens frame 16 for holding a lens group (not shown) having a single lens or a plurality of lenses is a cylindrical member having a hole 16a into which the lens is fitted. The optical axis C is the optical axis of the lens disposed in the lens frame 16. The lens frame 16 is sandwiched between a pair of leaf springs 17 and leaf springs 18 in the direction of the optical axis C.

  The leaf spring 17 is a rectangular thin plate-like member having a circular opening 17 a centering on the optical axis C. The leaf spring 17 is disposed between the fixed frame 21 and the lens frame 16. The outer periphery of the leaf spring 17 is fixed to the movable member 10, and the inner periphery of the leaf spring 17 is fixed to the lens frame 16. The outer periphery and inner periphery of the leaf spring 17 are connected by an elastic arm portion 17b. By this arm portion 17b, the leaf spring 17 has elasticity in the direction of the optical axis C.

  The leaf spring 18 is a rectangular thin plate-like member having a circular opening 18 a centered on the optical axis C. The leaf spring 18 is disposed between the lens frame 16 and the movable member 10. The outer periphery of the leaf spring 18 is fixed to the movable member 10, and the inner periphery of the leaf spring 18 is fixed to the lens frame 16. The outer periphery and the inner periphery of the leaf spring 18 are connected by an elastic arm portion 18b. The leaf spring 18 has elasticity in the direction of the optical axis C by the arm portion 18b.

  The lens driving means 19 for driving the lens frame 16 in the direction of the optical axis C includes four actuators 22. The actuators 22 are arranged with a phase difference of 90 degrees from each other on a plane orthogonal to the optical axis C. Each actuator 22 having the same configuration includes a magnet 22a and a coil 22b. The magnet 22 a is fixed to the upright piece 10 s of the movable member 10, and the coil 22 b is fixed on the outer peripheral surface of the lens frame 16.

  The fixed frame 21 for reinforcing the fixed state of the leaf spring 17 to the movable member 10 is a plate-like member having an opening 21a. The fixed frame 21 is fixed to the top surface of the upright piece 10 s of the movable member 10.

  The lid member 5 is a plate-like member that is fixed to the edge portion 2 f on the opening side of the base member 2 and has a circular opening portion 5 a centering on the optical axis C. The lid member 5 is provided with two Hall elements 27 that are magnetic field detection elements. The hall element 27 detects the magnetic field of the magnet 22 a disposed on the movable member 10. Since these Hall elements 27 are arranged at intervals of 90 degrees, the position of the movable member 10 in a plane orthogonal to the optical axis C can be detected.

  A flexible printed circuit board 6 which is a circuit board for ensuring electrical connection between the lens driving device 1 and an external circuit is connected to the Hall element 27.

  Next, the operation of the camera shake correction mechanism 3 will be described. If camera shake occurs when shooting with a device (for example, a camera) in which the lens driving device 1 is incorporated, the position of the optical axis C may change. In this case, a sensor that detects camera shake, such as a gyro sensor, detects camera shake, and the control means (not shown) controls the camera shake correction mechanism 3 so that the position of the optical axis C on the image sensor is maintained at a predetermined position. A control signal for driving is output to the coils 12b of the actuators 12, 13, and 14.

  In this case, as shown in FIGS. 5 and 6, when receiving the control signal, the actuator 12 generates a driving force F1 and linearly moves the movable member 10 in the direction of the linear movement locus T1. When receiving the control signal, the actuators 13 and 14 generate the driving force F2 and rotate the movable member 10 in the direction of the rotational movement locus T2. By this linear movement and rotation, the position of the optical axis C is moved to a predetermined position. At this time, the movement of the movable member 10 is restricted by the restricting means 15, and has two degrees of freedom that is a total of one degree of freedom by linear movement and one degree of freedom by rotation. For this reason, the movable member 10 can move the position of the optical axis C to a desired position within the range S. By this movement, the position of the optical axis C on the image sensor (for example, CMOS) is maintained at a predetermined position, and camera shake is corrected.

  In the lens driving device 1 having such a configuration, since the camera shake correction mechanism 3 includes the restriction unit 15, the movement of the movable member 10 moves along a linear movement locus T1 orthogonal to the optical axis C. And a point on the straight movement trajectory T1 is regulated to rotate along the rotational movement trajectory T2 with the rotation center RC as a rotation center RC. By restricting the movement of the movable member 10, it is possible to suppress the occurrence of unnecessary rotation around an unintended point on the support surface 2 b as the rotation center, and thus it is possible to perform highly accurate camera shake correction. Furthermore, since the lens driving device 1 does not require an actuator or the like for correcting the movement of the movable member 10 due to unnecessary rotation, the lens driving device 1 can be reduced in size without increasing the number of parts constituting the lens driving device 1. Contributes to

  Further, according to the lens driving device 1, since the focus adjustment mechanism 4 is arranged on the movable member 10, a part of the members constituting the focus adjustment mechanism 4 and a part of the movable member 10 are shared. Can be planned. Therefore, it is possible to reduce the number of parts constituting the lens driving device 1 and contribute to the miniaturization of the lens driving device 1.

  Further, according to the lens driving device 1, the restricting means 15 includes a groove 10 b provided in the movable member 10 and a pin 7 disposed in the base member 2 and inserted into the groove 10 b. The side surface of the pin 7 slides in line contact with the side wall of the groove 10b, and the pin 7 is guided in the direction of the linear movement locus T1. Therefore, the movable member 10 can be linearly moved with high accuracy.

  The present invention is not limited to the embodiment described above.

  In the restricting means 15 described above, the groove 10b has a rectangular cross section, but the cross sectional shape is not limited to a rectangle. As shown in FIGS. 7A and 7B, a groove having a pair of inclined surfaces 10u and 10v having a V shape may be used.

  The groove having a pair of slopes having a V shape includes a groove 10h having a trapezoidal cross section as in the first modification shown in FIG. According to this, since the pin 7 makes point contact with the slope 10u of the groove 10h, the frictional resistance can be reduced. Further, the groove having a pair of slopes having a V shape includes a groove 10j having a V shape in cross section as in the second modification shown in FIG. According to this, since the pin 7 makes point contact with the slope 10v of the groove 10j, the frictional resistance can be reduced.

  Moreover, although the pin 7 was inserted in the groove | channel 10b in the control means 15, the part in which the pin 7 is inserted is not limited to a groove | channel. For example, as in the third modified example shown in FIG. 7C, the groove 10b of the restricting means 15 may be a through hole 10k having a rectangular cross section. Since the pin 7 is in line contact with the wall surface 10w of the through hole 10k, the movable member 10 can be prevented from being inclined with respect to a plane orthogonal to the optical axis C.

  Further, as in the fourth modification shown in FIG. 7D, the groove 10b of the restricting means 15 may be a through hole 10p having a trapezoidal part in cross section. The through hole 10p having a trapezoidal part in cross section is a through hole having a pair of inclined surfaces 10x having a V shape. In the through hole 10p, the pin 7 is inserted into the trapezoidal portion 10q. Since the pin 7 makes point contact with the pair of inclined surfaces 10x of the trapezoidal portion 10q, the frictional resistance can be reduced.

  As another example of the restricting means 15, a spherical portion is provided between the base member 2 and the movable member 10 as in the fifth to ninth modifications shown in FIGS. 8 (a) to 8 (e). A spherical body (spherical portion) 9c may be arranged. Since the spherical body 9c makes point contact with the movable member 10, the frictional resistance can be reduced.

  As in the fifth modification shown in FIG. 8A, the spherical body 9c has a groove 10b having a rectangular cross section and a base so as to be in sliding contact with the opening-side end portions 10m of the pair of side walls 10t of the groove 10b. You may arrange | position between the recessed parts 2j formed in the member 2. FIG.

  Further, as in the sixth modification shown in FIG. 8B, the spherical body 9c may be disposed between the groove 10h having a trapezoidal cross section and the recess 2j formed in the base member 2. .

  Further, as in the seventh modification shown in FIG. 8C, the spherical body 9c may be disposed between the groove 10j having a V-shaped cross section and the recess 2j formed in the base member 2. Good.

  Further, as in the eighth modification shown in FIG. 8 (d), the spherical body 9c has a rectangular cross section so as to be in sliding contact with the opening side end portions 10n of the pair of side walls 10w of the through hole 10k. You may arrange | position between the hole 10k and the recessed part 2j formed in the base member 2. FIG.

  Further, as in the ninth modification shown in FIG. 8E, the spherical body 9c is disposed between the through hole 10p having a trapezoidal part in the cross-sectional shape and the recess 2j formed in the base member 2. May be. In the through hole 10p, the spherical body 9c is inserted into the trapezoidal portion 10q.

  As still another example of the restricting means 15, for example, as in the tenth to fourteenth modified examples shown in FIGS. 9A to 9E, a protrusion having a spherical surface formed on the base member 2 A portion (spherical portion) 2k may be provided. Since the protrusion 2k makes point contact with the movable member 10, the frictional resistance can be reduced.

  As in the tenth modification shown in FIG. 9A, the protrusion 2k is inserted into the groove 10b having a rectangular cross section so as to be in sliding contact with the opening side end 10m of the pair of side walls 10t of the groove 10b. May be. Further, as in the eleventh modification shown in FIG. 9B, the protrusion 2k may be inserted into a groove 10h having a trapezoidal cross section.

  Further, as in the twelfth modification shown in FIG. 9C, the protrusion 2k may be inserted into a groove 10j having a V-shaped cross section. Further, as in the thirteenth modification shown in FIG. 9 (d), the protrusion 2k has a rectangular cross section so as to be in sliding contact with the opening side end 10n of the pair of side walls 10w of the through hole 10k. It may be inserted into the hole 10k.

  Further, as in the fourteenth modification shown in FIG. 9E, the protrusion 2k may be inserted into the through hole 10p having a trapezoidal part in cross-sectional shape. In the through hole 10p, the protruding portion 2k is inserted into the trapezoidal portion 10q.

  In other examples of the regulating means 15 and the regulating means 15, as shown in FIGS. 4 and 7A to 7D, the pin 7 is fixed to the base member 2, and the movable member 10 has a groove. Although 10b, 10h, and 10j or the through holes 10k and 10p were provided, it is not limited to this structure. For example, the pin 7 may be fixed to the movable member 10 and the base member 2 may be provided with grooves 10b, 10h, 10j or through holes 10k, 10p. Furthermore, the pin 7 forming the pin portion may not be a member separate from the base member 2 or the movable member 10, and may be formed integrally with the base member 2 or the movable member 10.

  Further, in the fifth to ninth modifications shown in FIGS. 8A to 8E, the spherical body 9c is disposed not on the base member 2 but on the movable member 10, and the grooves 10b, 10h, 10j. Alternatively, the through holes 10k and 10p may be provided in the base member 2.

  Further, in the tenth to fourteenth modified examples shown in FIGS. 9A to 9E, the protrusion 2k is provided on the movable member 10 instead of the base member 2, and the grooves 10b, 10h, 10j and The through holes 10k and 10p may be provided in the base member 2.

  In the restricting means 15, the camera shake correction mechanism 3 and the focus adjustment mechanism 4 are moved integrally. However, for example, when the camera shake correction mechanism 3 includes a camera shake correction lens, the camera shake correction mechanism 3 has a camera shake correction lens 3. The correction mechanism 3 may move separately from the focus adjustment mechanism 4.

  In the movable member driving means 11, the coils 12b, 13b and 14b are arranged on the base member 2 and the magnets 12a, 13a and 14a are arranged on the movable member 10, but the magnets 12a, 13a and 14a are arranged on the base member 2. 14 a may be disposed, and the coils 12 b, 13 b, and 14 b may be disposed on the movable member 10. Further, the lens driving means 19 has the magnet 22 a disposed on the movable member 10 and the coil 22 b disposed on the lens frame 16, but the coil 22 b may be disposed on the movable member 10 and the magnet 22 a disposed on the lens frame 16. Good.

  The lens frame 16 of the focus adjustment mechanism 4 has a focus adjustment lens for focus adjustment, but may have a zoom lens for angle of view adjustment.

  In the lens driving device 1 described above, the focus adjustment mechanism 4 that is the imaging optical system is moved in the direction orthogonal to the optical axis C by the camera shake correction device 30. What is moved by the camera shake correction apparatus 30 is not limited to the imaging optical system. You may move the image pick-up element arrange | positioned on the movable member 10 with respect to the focus adjustment mechanism 4 fixed to the base member 2 in the direction orthogonal to the optical axis C. FIG.

1 ... Lens driving device,
2 ... Base member,
3. Shake correction mechanism,
4 ... Focus adjustment mechanism,
5 ... Lid member,
6 ... Flexible printed circuit board,
7 ... pin,
8: Support means,
10 ... movable member,
10b, 10h, 10j ... groove,
11 ... Driving means for the movable member,
15 ... regulatory means,
16 ... Lens frame,
17, 18 ... leaf spring,
19 ... Lens driving means,
21 ... Fixed frame,
30: Camera shake correction device (image shake correction device),
C: Optical axis,
T1 ... linear movement trajectory,
T2: rotational movement locus,
RC: Center of rotation,
2k: protrusion (spherical part),
9c ... spherical body (spherical part),
10t, 10w ... side wall,
10u, 10v, 10x ... slope,
10m, 10n ... opening side end,
10k, 10p ... through hole

Claims (6)

A base member;
A movable member disposed on the base member and moving in a plane perpendicular to the optical axis;
A movable member driving means disposed on the base member and the movable member and moving the movable member in a direction orthogonal to the optical axis;
Regulating means for regulating the movement of the movable member in a plane perpendicular to the optical axis,
The restricting means includes two linear movement trajectories that move in a direction orthogonal to the optical axis and a rotational movement trajectory that rotates about a point on the linear movement trajectory as a rotation center. An image blur correction device that restricts movement. The regulating means is
A groove or a through hole provided on one of the base member and the movable member and extending along the linear movement locus;
The image blur correction apparatus according to claim 1, further comprising a pin portion or a spherical portion that is disposed on the other of the base member and the movable member and is inserted into the groove or the through hole. The groove or the through hole has a pair of side walls parallel to the linear movement locus and facing each other,
The image blur correction device according to claim 2, wherein the pin portion is in sliding contact with the pair of side walls. The groove or the through-hole has a pair of inclined surfaces that are parallel to the linear movement locus and have a V shape,
The image blur correction device according to claim 2, wherein the pin portion or the spherical portion is in sliding contact with the pair of inclined surfaces. The groove or the through hole has a pair of side walls parallel to the linear movement locus and facing each other,
The image blur correction apparatus according to claim 2, wherein the spherical portion is in sliding contact with an opening side end portion of the pair of side walls. An image blur correction device according to any one of claims 1 to 5,
A lens frame disposed on the movable member, holding the lens and moving in the direction of the optical axis;
A lens driving device comprising: lens driving means arranged on the movable member and the lens frame and configured to move the lens in the direction of the optical axis.