JP2016224245A - Image blur correction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image blur correction device so structured as to be able to restrain positional variations of movable parts when the device is not in action.SOLUTION: An image blur correction device is equipped with fixed parts (60 and 70), a movable part 50 that holds an optical member 32 and shifts in a plane perpendicular to the optical axis O of the optical member relative to the fixed parts, a regulating part 80 that shifts between a first position and a second position by rotating relative to the fixed parts, and a driving part 90 that rotationally drives the regulating part relative to the fixed parts. The regulating part, when having rotationally shifted to the first position, press-supports the movable part in a direction along the optical axis while maintaining the state in which rotation relative to the fixed parts is allowed and, when having rotationally shifted to the second position, releases the movable part from the press-supporting is supported by the fixed parts in a fixed manner.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an optical image blur correction device that is mounted on a lens barrel of an imaging device or the like and uses a voice coil type actuator.

  Conventionally, an optical image formed by an imaging optical system is sequentially converted into an image signal by using a photoelectric conversion element or the like (hereinafter referred to as an imaging element), and the obtained image signal is recorded as image data in a predetermined form. An image pickup apparatus, for example, a digital camera, which includes an image display device such as a liquid crystal display device (LCD) and an organic EL display device which can be recorded on a medium and reproduces and displays image data recorded on the recording medium as an image. And video cameras are generally put into practical use and are widely used.

  In this type of conventional image pickup device, when the device is held and used by hand, a minute movement (so-called camera shake or the like) of the image pickup device resulting from unstable holding of the device is detected. In a direction that cancels out, a part of the optical member of the imaging optical system is moved on the surface substantially orthogonal to the optical axis (in the shift direction), or two axes (X axis and Y axis) orthogonal to the optical axis. Various devices having so-called optical image blur correction devices configured so as to be able to rotate around each of them (in the pitch direction and the yaw direction) have been proposed and put into practical use.

  As drive means in this type of image blur correction device, for example, those using, for example, a voice coil type actuator (Voice Coil Motor; VCM), a vibration type linear actuator, or the like have been put into practical use.

  Here, for example, in an image blur correction apparatus configured by applying a voice coil motor (VCM), an optical member for image blur correction is held when the supply current to the actuator is cut off during non-operation or the like. It is necessary to lock the movable part and keep it stationary.

  Therefore, in the image blur correction device disclosed in, for example, Japanese Patent No. 3450638, the movable portion in the plane perpendicular to the optical axis (X and Y directions) is obtained by rotating the lock ring when image blur correction is not performed. The movable range is reduced, and the movement of the movable part is suppressed.

Japanese Patent No. 3450638

  However, in the image blur correction apparatus disclosed in Japanese Patent No. 3450638, etc., in order to make the lock ring rotatable, the lock ring is interposed between the lock ring and a fixing portion that supports the lock ring. There is always a gap (sliding backlash) for ensuring the sliding of the material.

  For this reason, when the movable part is locked using the lock ring, the posture of the device is changed by transporting the imaging device in that state, or when an external force is applied to the device, for example. The position of the optical member held by the movable part moves within the range of the above-mentioned sliding play in a plane (X, Y direction) orthogonal to the optical axis, for example, or a direction along the optical axis (Z Direction). Therefore, there is a problem that it is difficult to always reliably maintain the stationary state of the movable portion in the conventional configuration disclosed in the above publications.

  Also, the position of the movable part changes due to the internal force, such as movement of the movable part due to the posture change caused by the way the camera is held, the impact of the shutter blades when the shutter is driven, and the impact of the mirror when the mirror is driven. Therefore, there is a problem that the obtained image is shaken.

  The present invention has been made in view of the above-described points, and an object of the present invention is to change the attitude of the apparatus itself or to intend for the apparatus at the time of non-operation in which the movable part holding the optical member is in an immobile state. It is an object of the present invention to provide an image blur correction apparatus having a structure capable of preventing the position of a movable part from fluctuating due to an external force applied.

  In order to achieve the above object, an image shake correction apparatus according to one embodiment of the present invention includes a fixed unit and a movable unit that holds the optical member and moves in a plane perpendicular to the optical axis of the optical member with respect to the fixed unit. A restricting portion that moves between a first position and a second position by rotating with respect to the fixed portion, and a drive portion that rotationally drives the restricting portion with respect to the fixed portion. And the restricting portion is configured to press and support the movable portion in a direction along the optical axis while maintaining a state in which rotation with respect to the fixed portion is allowed when the restricting portion rotates and moves to the first position. When the rotational movement is made, the pressing support to the movable part is released and the fixed part is fixedly supported to the fixed part.

  According to the present invention, when the movable part holding the optical member is in a non-operational state, the position of the movable part varies due to, for example, a change in the attitude of the apparatus itself or an unintended external force applied to the apparatus. It is possible to provide an image blur correction device having a structure capable of suppressing the above.

1 is an external perspective view showing an imaging apparatus including a lens barrel on which an image shake correction apparatus according to an embodiment of the present invention is mounted. FIG. 1 is a main part schematic configuration diagram illustrating a vertical cross section of the imaging apparatus of FIG. 1 cut along a cutting plane indicated by reference numeral [2] in FIG. 1 is a plan view showing an image shake correction apparatus (a movable part holding state in which a restriction part is in a first position) according to an embodiment of the present invention; Sectional drawing which follows the [4]-[O]-[4] line of FIG. Sectional drawing which follows the [4]-[O]-[5] line of FIG. The top view which shows the movable part in the image blurring correction apparatus of FIG. Sectional drawing which follows the [7]-[7] line of FIG. The top view which shows the 1st fixing | fixed part in the image blurring correction apparatus of FIG. The top view which shows the 2nd fixing | fixed part in the image blurring correction apparatus of FIG. The top view which shows the control part in the image blurring correction apparatus of FIG. Sectional drawing which follows the [11]-[11] line of FIG. FIG. 3 is an external perspective view showing only the second urging member included in the restricting portion in the image blur correction device of FIG. 3. The top view which shows the image blurring correction apparatus (the movable part holding | maintenance cancellation | release state in which the control part is in a 2nd position) of this embodiment The principal part expanded sectional view which expands and shows a part (contact part of a leaf | plate spring and the convex-shaped part of a movable part) of the image blur correction apparatus of this embodiment. The figure which shows the modification about a movable part holding spring in the image blurring correction apparatus of one Embodiment of this invention, and also shows the effect | action of the said movable part holding spring. The top view which shows the 2nd modification about a movable part holding | maintenance spring in the image shake correction apparatus of one Embodiment of this invention, and takes out only the control part in the said image shake correction apparatus. Sectional drawing which shows the outline of the whole structure of the image blur correction apparatus in the 2nd modification about the movable part holding spring of the image blur correction apparatus of one Embodiment of this invention. 1 is a flowchart showing an outline of the operation of an imaging apparatus including a lens barrel on which an image shake correction apparatus according to an embodiment of the present invention is mounted.

  The present invention will be described below with reference to the illustrated embodiments.

[One Embodiment]
In one embodiment of the present invention, for example, an optical image formed by an imaging optical system including a plurality of optical members (optical lenses) is photoelectrically converted using a solid-state imaging device or the like, and an image signal obtained thereby is stationary Digital image data representing an image or a moving image is converted, the digital image data generated thereby is recorded on a recording medium, and a still image or a moving image is displayed on a display device based on the digital image data recorded on the recording medium. 3 is an illustration of an image blur correction device mounted on a lens barrel of an imaging device configured to be able to perform reproduction display.

  In the present embodiment, the optical axis of the imaging optical system in the lens barrel is denoted by reference symbol O. Then, in the direction along the optical axis O, the side with the subject facing the front surface of the imaging device is referred to as the front side, and the side with the light receiving surface (imaging surface) of the imaging device disposed on the back side of the imaging device. Is the rear. In the plane orthogonal to the optical axis O, the left-right direction from the subject side toward the front of the imaging apparatus, that is, the horizontal direction is referred to as the X direction. An up-down direction (vertical direction), that is, a direction perpendicular to the X direction is referred to as a Y direction. A direction along the optical axis O is referred to as a Z direction.

  In each drawing used for the following description, each component may be shown with a different scale in order to make each component large enough to be recognized on the drawing. Therefore, according to the present invention, the number of constituent elements, the shape of the constituent elements, the ratio of the constituent element sizes, and the relative positional relationship of the constituent elements described in these drawings are limited to the illustrated embodiments. It is not a thing.

  FIG. 1 is an external perspective view showing an imaging apparatus including a lens barrel on which an image shake correction apparatus according to an embodiment of the present invention is mounted. 2 shows a longitudinal section of the imaging device of FIG. 1 cut along the section indicated by reference numeral [2] in FIG. 1, and is a diagram showing an outline of the internal structure of the imaging device. In FIG. 2, in order to avoid complication of the drawing, illustration of components not directly related to the present invention is omitted, and the internal configuration is simplified.

  First, before describing the detailed configuration of an image shake correction apparatus according to an embodiment of the present invention, FIG. 1 and FIG. 2 illustrate a schematic configuration of an imaging apparatus including a lens barrel on which the image shake correction apparatus is mounted. This will be described below.

  As shown in FIGS. 1 and 2, an imaging apparatus 1 including a lens barrel equipped with an image shake correction apparatus to which the present invention is applied includes an apparatus body 10 and a lens barrel 30. The apparatus main body 10 is configured to include a casing that houses various constituent units constituting the imaging apparatus 1 and a plurality of operation members that are respectively disposed at predetermined positions on the outer surface of the casing. ing.

  Examples of various constituent units that constitute the imaging device 1 and are housed in the housing include, for example, the imaging device 11 (not shown in FIG. 1; see FIG. 2), a finder device, a shutter mechanism, a plurality of electric boards, and the like (not shown). There is an illustration). Here, as the imaging device 11, for example, a CCD image sensor using a CCD (Charge Coupled Device), a MOS type image sensor using a complementary metal oxide semiconductor (CMOS), or the like. Applies. As the shutter mechanism, for example, a focal plane type shutter mechanism provided on the front side of the light receiving surface of the image sensor 11 is applied. The shutter mechanism may be a so-called lens shutter mechanism or the like that is disposed in the lens barrel 30 in addition to the one disposed in the apparatus main body 10.

  Further, as another constituent unit of the imaging device 1, a display device (not shown) is disposed on the back side of the casing. The display device displays an image based on image data acquired by the image sensor 11 or image data recorded on a recording medium (not shown), and displays a selection display screen for performing various settings. And so on.

  As the plurality of operation members provided outside the housing, for example, a push-type operation member 14 for performing shutter release, setting change, and the like, and a rotary operation member 15 for performing setting switching operation, mode selection operation, and the like. In addition to the lever-type operation member 16 for performing on / off operation of the power source, etc., there are a slide-type operation member for performing other operations.

  On the other hand, the lens barrel 30 provided in the imaging apparatus 1 is formed in, for example, a cylindrical shape as a whole, and includes an imaging optical system including optical lens groups (31, 32, 33) that are a plurality of optical members. A plurality of lens holding members (not shown) for holding each of a plurality of optical lens groups constituting the imaging optical system, and the plurality of lens holding members in a direction along the optical axis O of the imaging optical system. In addition to a drive mechanism (not shown) for moving forward and backward, the image blur correction device 40 of this embodiment is included.

  The lens barrel 30 is disposed on the front side of the apparatus main body 10. In this case, the lens barrel 30 may be fixed to the apparatus main body 10 or may be detachable from the apparatus main body 10.

  Here, when the lens barrel 30 is disposed on the front surface of the apparatus main body 10, the optical image formed by the imaging optical system of the lens barrel 30 is received by the imaging element 11 in the apparatus main body 10. An image is formed on the surface. For this purpose, the arrangement of the lens barrel 30 with respect to the apparatus main body 10 is set so that the optical axis O of the imaging optical system of the lens barrel 30 and the substantially central portion of the light receiving surface of the imaging element 11 substantially coincide. .

  The image shake correction apparatus 40 according to the present embodiment includes a second lens holding frame (a movable unit 50 to be described later) that holds the second lens group 32 among the plurality of optical lens groups constituting the imaging optical system in the lens barrel 30. ). Then, the image blur correction device 40 performs image blur correction by moving the second lens holding frame (movable portion 50) that holds the second lens group 32 in the same plane in the direction orthogonal to the optical axis O. Unit (details will be described later).

  The other configuration of the imaging apparatus 1 itself is assumed to have substantially the same configuration as that of the conventional imaging apparatus of the same form, and further detailed description is omitted.

  Next, a detailed configuration of the image blur correction apparatus 40 of the present embodiment will be described below with reference to FIGS.

  3 to 5 are diagrams showing an image blur correction apparatus according to an embodiment of the present invention. Among these, FIG. 3 is a plan view of the image blur correction apparatus of the present embodiment. In addition, the state shown in FIG. 3 has shown the movable part holding state which has a control part in a 1st position so that it may mention later. 4 is a cross-sectional view taken along the line [4]-[O]-[4] in FIG. FIG. 5 is a cross-sectional view taken along line [4]-[O]-[5] in FIG.

  6 to 12 are diagrams each showing the components constituting the image shake correction apparatus of FIG. Among these, FIG. 6 is a plan view showing a movable portion in the image blur correction apparatus of FIG. 7 is a cross-sectional view taken along line [7]-[7] in FIG. FIG. 8 is a plan view showing a first fixing unit in the image blur correction apparatus of FIG. FIG. 9 is a plan view showing a second fixing unit in the image blur correction apparatus of FIG. FIG. 10 is a plan view showing a restricting portion in the image blur correction device of FIG. 11 is a cross-sectional view taken along the line [11]-[11] in FIG. FIG. 12 is an external perspective view showing only the second urging member included in the restricting portion in the image blur correction device of FIG.

  As described above, the image shake correction apparatus 40 according to the embodiment of the present invention moves the movable unit 50 that is the second lens holding frame that holds the second lens group 32 in a direction (vertical direction) orthogonal to the optical axis O. This is a unit that corrects image blur by moving it.

  The image blur correction device 40 includes a movable unit 50 (the second lens holding frame), a fixed unit including a first fixed unit 60 (not shown in FIG. 3) and a second fixed unit 70, a regulating unit 80, It is mainly configured by the drive unit 90 and the like.

  The movable portion 50 is a second lens holding frame that holds the second lens group 32 (optical member) among the plurality of optical lens groups (31, 32, 33) that constitute the imaging optical system in the lens barrel 30. is there. As will be described later, the movable portion 50 moves in a plane (in a vertical plane) perpendicular to the optical axis O of the light beam incident on the optical member (second lens group 32) with respect to the fixed portion. It is configured. The basic configuration for this is substantially the same as that in a conventional image blur correction apparatus. Below, the structure of the movable part 50 is demonstrated easily.

  As shown mainly in FIG. 6, the movable portion 50 includes a movable portion main body 51 serving as a basic component, and a plurality of constituent members disposed at predetermined portions on the movable portion main body 51, that is, a drive coil 57. , Biasing spring 53, Hall element 54, second lens group 32, and the like.

  The movable part main body 51 is made of an annular flat plate member as a whole, and is formed by a flat part 51c having an opening 51b in a substantially central part. A lens holding portion 51a standing in a flange shape is formed at the periphery of the opening 51b. A second lens group 32 that is a part of an optical member constituting the imaging optical system is fixed to the opening 51b.

  Two driving coils 57 (for X direction and Y direction) for driving the movable part 50 on one surface of the flat part 51 c of the movable part main body 51, and the rotational part of the movable part 50 in the rotational direction. Two Hall elements 54 for position detection are mounted on predetermined portions, respectively. Here, each of the two driving coils 57 is disposed opposite to two driving magnets 67 (to be described later) in the first fixed portion 60. In addition, each of the two Hall elements 54 for position detection is disposed at a position facing each of two position detection magnets 72 described later in the second fixed portion 70 (the upper surface side of the movable portion 50).

  A plurality of ball receiving surfaces 55 are formed on the other surface of the flat surface portion 51 c of the movable portion main body 51. The ball receiving surface 55 is a flat surface portion for receiving a ball 64 disposed on a ball receiving portion 65 of the first fixing portion 60 described later. In this embodiment, three ball receiving surfaces 55 are formed on the flat surface portion 51c of the movable portion main body 51 at intervals of about 120 degrees in the circumferential direction.

  A plurality of spring hook portions 52 projecting outward are formed on the outer peripheral surface of the movable portion main body 51. In the present embodiment, three spring hook portions 52 are formed at intervals of about 120 degrees in the circumferential direction of the movable portion main body 51.

  For example, one end of a coiled biasing spring 53 is suspended from the spring hook portion 52. A spring hook portion 62 of a first fixing portion 60 described later is suspended from the other end of the biasing spring 53 (see FIG. 5). That is, the urging spring 53 is stretched between the movable portion 50 and the first fixed portion 60, thereby integrally connecting the two (50, 60). At this time, the movable part 50 is movable with respect to the first fixed part 60.

  Further, the movable portion 50 in the image shake correction apparatus 40 of the present embodiment protrudes radially outward and in a direction along the optical axis O on the outer peripheral surface of the lens holding portion 51 a of the movable portion main body 51. At least one or more convex portions 56 to be formed are provided. In this respect, it has a characteristic configuration different from that of the conventional image blur correction apparatus.

  As shown in the cross-sectional view of FIG. 7, the convex portion 56 is formed in a V-shaped cross-section or a hemispherical shape on a plane parallel to the inclined surface 56 b and the flat portion 51 c of the movable portion 50. And a recessed portion 56a. In FIG. 7, a recess 56a having a V-shaped cross section is illustrated. Moreover, in FIG. 14 mentioned later, hemispherical recessed part 56a is illustrated.

  It should be noted that at least one convex portion 56 may be provided. In the present embodiment, there are three forms of the convex portion 56 formed at intervals of about 120 degrees in the circumferential direction along the outer periphery of the lens holding portion 51 a of the movable portion main body 51. The most stable operation | movement can be acquired by arrangement | positioning of the said convex-shaped part 56 as such a structure.

  Next, the fixing part is constituted by the first fixing part 60 and the second fixing part 70 as described above. Of these, the first fixed unit 60 is mainly referred to as shown in FIG. 8, and the movable unit 50 is also referred to as a plane perpendicular to the optical axis O (or a vertical plane). However, it is a component unit mounted in a movable state. For this purpose, the basic configuration of the first fixing unit 60 is substantially the same as that in the conventional image blur correction apparatus. Below, the structure of the 1st fixing | fixed part 60 is demonstrated easily.

  The first fixing portion 60 includes a first fixing portion main body 61 serving as a basic constituent portion, and a plurality of constituent members disposed at predetermined portions on the first fixing portion main body 61, that is, a driving magnet 67, an urging force. A spring 53, a ball 64, and the like are included.

  The first fixing portion main body 61 is made of an annular flat plate member as a whole, and has a flat surface portion 61a and an opening 61b formed at a substantially central portion of the flat surface portion 61a. In addition, an outer wall portion 61 c that is erected in a flange shape is formed on the outer peripheral edge portion of the first fixed portion main body 61. When the movable portion 50 is arranged so as to overlap the first fixed portion main body 61, the second lens group 32 is arranged to face the opening 61b. At this time, the arrangement of the movable part 50 (second lens group 32) with respect to the first fixed part 60 is set so that the optical axis O of the second lens group 32 passes through the substantially center point of the opening 61b.

  The first fixed portion main body 61 has movable portions corresponding to the two drive coils 57 (for X direction and Y direction) for driving the movable portion 50 on one surface of the flat portion 61a. Two driving magnets 67 for driving are respectively mounted on predetermined portions. These two drive magnets 67 are arranged to face each of the two drive coils 57 of the movable part 50 when the movable part 50 is arranged so as to overlap the first fixed part main body 61. Each is disposed at a site. Here, the two drive coils 57 and the two drive magnets 67 constitute a drive unit for image blur correction drive in the image blur correction device 40.

  In addition, a plurality of ball receiving portions 65 are formed on a surface on the same side as the mounting surface of the driving magnet 67 in the flat surface portion 61 a of the first fixed portion main body 61. In the present embodiment, three ball receiving portions 65 are formed at intervals of approximately 120 degrees in the circumferential direction on the flat surface portion 61a of the first fixed portion main body 61.

  A ball 64 is accommodated in the ball receiving portion 65. Here, a hard sphere using a metal such as a steel ball or a ceramic ball is used as the ball 64, for example. Further, the depth dimension of the ball receiving portion 65 is set to be at least smaller than the diameter of the ball 64. That is, when the ball 64 is stored inside the ball receiving portion 65, a part of the ball 64 protrudes from the upper surface of the ball receiving portion 65.

  Furthermore, the first fixing portion main body 61 is formed with a plurality of hole portions 61d penetrating the flat surface portion 61a. In the present embodiment, an example is shown in which three holes 61 d are formed at intervals of about 120 degrees in the circumferential direction on the flat surface 61 a of the first fixed body 61.

  Each of the plurality of hole portions 61d has a spring hook portion 62 projecting from the inside thereof. The other end of the urging spring 53 is suspended from the spring hook portion 62. As described above, the spring hook portion 52 of the movable portion main body 51 is suspended at one end of the biasing spring 53 (see FIG. 5). Thereby, the movable part 50 and the first fixed part 60 are integrally connected by the biasing force of the biasing spring 53, and the movable part 50 is movable with respect to the first fixed part 60. Yes.

  The movable portion 50 is arranged with respect to the first fixed portion 60 so that the central axis of the opening 61b of the first fixed portion main body 61 and the optical axis O of the second lens group 32 of the movable portion 50 substantially coincide with each other. Established.

  As described above, the basic configuration as the image blur correction device is substantially established by the movable portion 50 and the first fixed portion 60. In the image blur correction device 40 of the present embodiment, The following configuration is further provided. That is, in the image shake correction apparatus 40 of the present embodiment, the first fixed unit 60 is controlled in order to suppress the change in the position of the movable unit 50 due to a change in posture or an unintended external force applied during non-operation. A structure for restricting the movement of the movable portion 50 is provided. As a structure for that purpose, among the fixed portions, there are a second fixed portion 70, a regulating portion 80, and a drive portion 90.

  The second fixing portion 70 is a component unit that is fastened and fixed to the first fixing portion 60 so as to be integrated with the first fixing portion 60 in a form that is placed on one surface side of the first fixing portion 60. The second fixing portion 70 is formed of an annular flat plate member as a whole, and has a flat surface portion 70a and an opening 70b formed at a substantially central portion of the flat surface portion 70a. A plurality of position detection magnets (hereinafter referred to as position detection magnets) 72 are arranged at predetermined positions on the plane of the flat portion 70a. In the present embodiment, as the plurality of position detecting magnets 72, an example is shown in which two are arranged at an angle of 90 degrees in the circumferential direction of the flat surface portion 70a. Each of these two position detecting magnets 72 is installed at a position facing each of the two Hall elements 54 in the movable portion 50 (on the lower surface side of the second fixed portion 70).

  Further, in the flat portion 70a of the second fixing portion 70, a step flat portion 70c having a step in the thickness direction and having a plane parallel to the plane of the flat portion 70a is formed in a part of the region. . The step flat portion 70c includes a magnet 75 and a yoke 74 that constitute a part of a drive unit 90 (details will be described later) for driving a regulation unit 80 (details will be described later), and a regulation that regulates the position of the regulation unit 80. A part holding spring 73 is fixedly arranged.

  Here, the restricting portion holding spring 73 is a constituent member for fixing and holding the restricting portion 80 at two predetermined positions (a first position and a second position described later). In other words, the restricting portion holding spring 73 is disposed on the second fixing portion 70, and fixedly supports the restricting portion 80 with respect to the fixing portions (60, 70), and holds the first state. It is an urging member. The restricting portion holding spring 73 has a function of locking the restricting portion 80 when the restricting portion 80 is rotationally moved and disposed at a second position described later (see FIG. 13; details will be described later). Further, when the restricting portion 80 rotates and is disposed at a first position described later (see FIG. 3; details will be described later), the turning end of the restricting portion 80 is prevented from rotating in one direction. It serves to remove the rotation play.

  For this purpose, the restricting portion holding spring 73 is formed by molding an elongated flat plate-like biasing member as a whole. That is, the specific shape of the restricting portion holding spring 73 is a first inclined portion 73a having an inclined surface with respect to the circumferential direction of the second fixed portion 70, and the bent portion 73a is bent in a substantially orthogonal direction. A bent portion 73b and a second inclined portion 73c extending in parallel to the first inclined portion 73a from the tip of the bent portion 73b are formed.

  And the 1st inclination part 73a and the 2nd inclination part 73c of the said control part holding | maintenance spring 73 are arrange | positioned so that the circumferential direction of the said 2nd fixing | fixed part 70 may be crossed. That is, when the restricting portion 80 is rotationally moved and disposed at one end portion of the rotation range (first position; see FIG. 3), the restricting portion holding spring 73 is, as will be described later, The support shaft 83 is fixedly arranged so as to be in a position where it abuts against the second inclined portion 73c.

  The restricting portion holding spring 73 is fixed to the flat portion 70 a of the second fixing portion 70 by, for example, screws on the support shaft 77. In the restricting portion holding spring 73, the first inclined portion 73a and the second inclined portion 73c can be deformed in the circumferential direction of the second fixing portion 70 with the support shaft 77 as a fulcrum.

  On the other hand, a plurality of groove portions 76 (see FIG. 4) having a predetermined groove depth in the radial direction are formed in the inner peripheral edge portion of the opening 70b of the second fixing portion 70. The plurality of groove portions 76 are fitted and arranged with support shafts 83 described later in the restriction portion 80. At this time, the plurality of groove portions 76 allow movement of the restriction portion 80 relative to the second fixed portion 70 in a plane perpendicular to the optical axis O of the restriction portion 80 (in a vertical plane), and the optical axis of the restriction portion 80. It has the function of regulating the position in the O direction.

  In addition, with respect to the second fixed portion 70, the first fixed portion 60 and the movable portion 50 have a central axis of the opening 70b of the second fixed portion 70 and a central axis of the opening 61b of the first fixed portion main body 61. The optical axis O of the second lens group 32 of the movable part 50 is disposed so as to substantially coincide.

  Next, the restricting portion 80 is a constituent unit that moves between a first position and a second position (details will be described later) by rotating with respect to the fixed portion (60, 70). The restricting portion 80 is formed of an annular flat plate member as a whole, and has a flat surface portion 80a and an opening 80b formed at a substantially central portion of the flat surface portion 80a. On the outer peripheral portion of the restricting portion 80, one arm portion 81 protrudes outward in the radial direction. The tip portion of the arm portion 81 constitutes a part of a drive portion 90 (details will be described later) for driving the restriction portion 80, and a restriction portion drive coil 82 corresponding to the magnet 75 and the yoke 74. It is arranged.

  In addition, a plurality of support shafts 83 project outwardly in the radial direction at a portion other than the portion where the arm portion 81 is disposed on the outer peripheral portion of the restricting portion 80. In the present embodiment, an example is shown in which three of the plurality of support shafts 83 are formed at intervals of approximately 120 degrees in the circumferential direction of the restricting portion 80. The support shaft 83 is formed at each corresponding portion in the peripheral portion of the opening 70b of the second fixed portion 70, and is fitted into a groove portion 76 (see FIG. 4) having a groove depth in the radial direction, thereby the regulation The movement of the part 80 in the direction of the optical axis O is restricted, and the movement of the restriction part 80 in the direction perpendicular to the optical axis O (vertical direction) is allowed.

  Furthermore, a plurality of outward hemispherical convex portions 85 that protrude outward in the radial direction and are formed in a hemispherical shape are formed on the outer peripheral surface of the restricting portion 80. In the present embodiment, a plurality of the outward hemispherical convex portions 85 are formed at intervals of about 120 degrees in the circumferential direction. The outward hemispherical convex portion 85 is disposed at a position where it comes into contact with the inner peripheral wall surface of the second fixing portion 70 when the restriction portion 80 is incorporated as a part of the image blur correction device 40 (FIG. 3 and the like). reference). As a result, the restricting portion 80 is disposed so as to be rotatable within the opening 70 b with respect to the second fixing portion 70. Therefore, when the restricting portion 80 rotates, the outward hemispherical convex portion 85 rotates while sliding on the inner peripheral wall surface of the second fixed portion 70 and moves in a plane (vertical plane) direction orthogonal to the optical axis O. Is regulated.

  In addition, a plurality of inward hemispherical convex portions 86 that are projecting portions that protrude inward in the radial direction and are formed in a hemispherical shape are formed on the inner peripheral surface of the restricting portion 80. In the present embodiment, the plurality of inward hemispherical convex portions 86 are shown as being formed at intervals of about 120 degrees in the circumferential direction. This inward hemispherical convex portion 86 is provided when the restriction portion 80 is in a predetermined position when the restriction portion 80 is incorporated as a part of the image blur correction device 40 (first position described later; see FIG. 3). ) Only in contact with the outer wall surface of the convex portion 56 of the movable portion 50.

  That is, as will be described in detail later, when the restricting portion 80 is in the first position (see FIG. 3), the inward hemispherical convex portion 86 abuts against the outer wall surface of the convex portion 56 from three directions, The movement of the movable part 50 in a plane orthogonal to the optical axis O is restricted. On the other hand, when the restricting portion 80 is in the second position (see FIG. 13), the contact between the inward hemispherical convex portion 86 and the outer wall surface of the convex shape portion 56 is released and arranged at positions separated from each other. Movement of the movable part 50 in a plane perpendicular to the optical axis O is allowed.

  Furthermore, the flat portion 80 a of the restricting portion 80 is configured to press and urge the movable portion 50 toward the first fixed portion 60 in the direction along the optical axis O and to support the movable portion 50. A movable portion holding spring 84 that is an urging member is fixedly arranged. The movable portion holding spring 84 moves the movable portion 50 in the direction along the optical axis O (first direction) when the restricting portion 80 rotates and is disposed at a first position described later (see FIG. 3; details will be described later). The movable portion 50 is configured to be locked by pressing and urging the fixed portion 60 side). On the other hand, when it is arranged at a second position (see FIG. 13; details will be described later) described later, the pressing force in the direction along the optical axis O (the first fixed portion 60 side) of the movable unit 50 is released. The movement of the movable part 50 in a plane perpendicular to the optical axis O is allowed.

  For this purpose, the movable portion holding spring 84 has an annular portion 84a having a substantially annular shape as a whole and having a flat surface portion, and a plurality of leaf springs 84x that are connected to the annular portion 84a and formed on the inner peripheral side. And is formed by. In the present embodiment, an example is shown in which a plurality of leaf springs 84 x are formed at intervals of about 120 degrees in the circumferential direction of the movable portion holding spring 84. Each leaf spring 84x includes an arm portion 84b projecting radially from the annular portion 84a toward the inner periphery, an extension portion 84c extending from the arm portion 84b in the circumferential direction, and the extension portion 84c. A sloped portion 84d that bends downward (to the movable portion 50 side) to form a stepped portion with respect to the extended portion 84c, and extends from the tip of the sloped portion 84d in the circumferential direction in parallel to the plane of the extended portion 84c. The distal end support portion 84e that extends and the lower surface of the distal end support portion 84e (the surface that faces the movable portion 50) can be fitted into the concave portion 56a of the convex portion 56 of the movable portion main body 51 of the movable portion 50. A convex portion 84f (not shown in FIG. 10, FIG. 12, etc .; see FIG. 11) or the like is formed (see FIG. 10 to FIG. 12). Therefore, with this shape, each leaf spring 84x is formed in a cantilever shape with the arm portion 84b as a support portion, and can be deformed in the direction along the optical axis O at the tip support portion 84e.

  In addition, the restricting portion 80 is configured so that the center axis of the opening 70b of the second fixing portion 70 and the center axis of the opening 80b of the restricting portion 80 substantially coincide with each other, that is, The movable unit 50 is disposed so as to substantially coincide with the optical axis O of the second lens group 32.

  Next, the drive unit 90 is a constituent unit for rotationally driving the regulating unit 80 in a predetermined area (within a predetermined rotation angle) with respect to the fixed unit (second fixed unit 70). The drive unit 90 is mainly configured by a magnet 75 and a yoke 74 disposed on the second fixed portion 70 (see FIG. 9), and a coil 82 disposed on the regulating portion 80 (see FIG. 10). Yes.

  The magnet 75 and the yoke 74 in the drive unit 90 are formed in a substantially arc shape. The magnet 75 is disposed along the circumferential direction of the second fixed portion 70 along the arc shape of confidence in the stepped flat surface portion 70 c of the second fixed portion 70. The yoke 74 is disposed at a predetermined interval in the plate thickness direction of the second fixing portion 70 so as to face the magnet 75. Further, the coil 82 is disposed at a portion facing the magnet 75. In this case, the yoke 74 is inserted into the air core portion of the coil 82. With this configuration, the coil 82 is configured to move along the arc shape of the magnet 75 and the yoke 74 when the restricting portion 80 rotates.

  Therefore, the regulating unit 80 is within the range of a predetermined rotation angle around the optical axis O with respect to the second fixed unit 70 by the action of the driving unit 90 (within the circumferential length of the arc-shaped magnet 75). It is comprised so that it may rotate.

  The operation of the image shake correction apparatus 40 of the present embodiment configured as described above will be described below with reference to FIGS. 3, 13, and 14. Here, FIG. 3 shows a state where the restricting portion 80 is in the first position (movable portion holding state) in the image blur correction device 40 of the present embodiment. FIG. 13 shows a state where the regulating unit 80 is in the second position (movable unit holding release state) in the image blur correction device 40 of the present embodiment. FIG. 14 is an enlarged cross-sectional view of a main part showing a part of the image blur correction device 40 of the present embodiment (a contact portion between the leaf spring 84x and the convex portion 56 of the movable portion 50). In FIG. 14, reference numeral [14A] indicates a cross section taken along the line [14A]-[14A] in FIG. Similarly, in FIG. 14, reference numeral [14B] indicates a cross section taken along the line [14B]-[14B] in FIG.

  In the image blur correction device 40 of the present embodiment, the restricting unit 80 rotates around the optical axis O by the action of the driving unit 90. At this time, the restricting portion 80 moves between the first position shown in FIG. 3 and the second position shown in FIG.

  Here, first, when the restricting portion 80 rotates around the optical axis O by the action of the driving portion 90 and the restricting portion 80 is in the state shown in FIG. 3, the position of the restricting portion 80 at this time is changed to the first position. Assume that the position is 1. Similarly, when the restricting portion 80 rotates around the optical axis by the action of the driving portion 90 and the restricting portion 80 is in the state shown in FIG. 13, the position of the restricting portion 80 at this time is changed to the second position. The position of

  In the state shown in FIG. 3 in which the image shake correction apparatus 40 of the present embodiment is shown, that is, the state in which the restricting unit 80 is in the first position, the movable unit 50 is held with respect to the fixed units (60, 70). State. When in the movable portion holding state, the restricting portion 80 is configured so that the convex portions 84f of the leaf springs 84x of the movable portion holding spring 84 of the restricting portion 80 are convex of the movable portion main body 51 of the movable portion 50, as shown in FIG. The shape 56 is in a state of being fitted into the recess 56a. At this time, the positional relationship between the convex portion 84f of each leaf spring 84x and the concave portion 56a of the convex portion 56 of the movable portion main body 51 of the movable portion 50 is in a state indicated by reference numeral [14B] in FIG. At this time, the restricting portion 80 presses and supports the movable portion 50 in the direction along the optical axis O (the first fixed portion 60 side) by the movable portion holding spring 84 (second urging member), and the movable portion 50 is engaged. It has stopped. Therefore, the movable part 50 is restricted from moving in the direction along the optical axis O.

  At this time, the restricting portion 80 is in a state of allowing rotation with respect to the fixed portions (60, 70), but one of the plurality of support shafts 83 of the restricting portion 80 holds the restricting portion. The spring 73 is in contact with the second inclined portion 73c. At this time, the urging force of the restricting portion holding spring 73 acts to rotate the restricting portion 80 clockwise in FIG. When the restricting portion 80 is at the first position in FIG. 3, the restricting portion 80 is disposed at one end of the rotation range as described above. Therefore, the biasing force of the restricting portion holding spring 73 acts on the support shaft 83 of the restricting portion 80 to absorb the rotational play. That is, the position of the restricting portion 80 in the rotation direction is restricted.

  Further, when the restricting portion 80 is in the first position (see FIG. 3), the inward hemispherical convex portion 86 of the restricting portion 80 is in contact with the outer wall surface of the convex shape portion 56 of the movable portion 50 from three directions from the outside. . As a result, the restricting portion 80 restricts the movement of the movable portion 50 in a plane orthogonal to the optical axis O.

  Thus, when the restricting portion 80 is in the first position shown in FIG. 3, the movable portion 50 is restricted from moving in the direction along the optical axis O by the movable portion holding spring 84 (second biasing member). At the same time, the movement in the direction orthogonal to the optical axis O is restricted by the biasing force of the restricting portion holding spring 73 and the contact between the inward hemispherical convex portion 86 and the outer wall surface of the convex portion 56. Accordingly, when the imaging apparatus 1 to which the image shake correction apparatus 40 is applied changes in this state, for example, when the shutter or the mirror is driven, an internal impact or an unintended external force is applied thereto. Even if it is done, the fluctuation | variation of the position of the movable part 50 is suppressed.

  Next, the image shake correcting apparatus 40 of the present embodiment is changed from the state shown in FIG. 3 (the state where the restricting portion 80 is in the first position) to the state shown in FIG. 13 (the restricting portion 80 is in the second position). When it is displaced to the state), it operates as follows.

  When the restricting portion 80 is displaced from the first position shown in FIG. 3 to the second position shown in FIG. 13, the restricting portion 80 is rotated counterclockwise in FIG. Rotate in the direction. Then, the support shaft 83 presses the supporting shaft 83 against the urging force of the restricting portion holding spring 73 from a state where the support shaft 83 is in contact with the second inclined portion 73c of the restricting portion holding spring 73 (see FIG. 3). The restricting portion holding spring 73 receives the pressure of the support shaft 83 and bends while allowing the support shaft 83 to rotate counterclockwise in FIG. At this time, the support shaft 83 rotates in the same direction along the second inclined portion 73c, and eventually fits between the bent portion 73b and the first inclined portion 73a. The rotation is locked. This state is shown in FIG.

  In the state shown in FIG. 13 where the image shake correction apparatus 40 of the present embodiment is shown in FIG. The movable part holding state is a state in which the movable part is held in the plane and the movable part holding state by the restriction unit 80 is released. When in the movable portion holding release state, the restricting portion 80, as shown in FIG. 13, includes a convex portion 84f of each leaf spring 84x of the movable portion holding spring 84 of the restricting portion 80 and a movable portion main body 51 of the movable portion 50. The protruding portion 56 is in a state where the fitting with the recessed portion 56a is released. At this time, the positional relationship between the convex portion 84f of each leaf spring 84x and the concave portion 56a of the convex portion 56 of the movable portion main body 51 of the movable portion 50 is the state indicated by the reference numeral [14A] in FIG. At this time, the restricting portion 80 is released from the pressing bias in the direction along the optical axis O of the movable portion 50 (the first fixed portion 60 side) by the movable portion holding spring 84 (second biasing member). The movable part 50 is allowed to move in a plane orthogonal to the optical axis O.

  Here, between the first position (refer to [14B] in FIG. 3 and FIG. 14) and the second position (refer to [14A] in FIG. 13 and FIG. 14) when the restricting portion 80 rotates and moves. The operation of the movable part holding spring 84 in the process of transition will be briefly described below.

  For example, first, the action of the movable portion holding spring 84 when the restricting portion 80 transitions from the second position in FIG. 13 to the first position in FIG. 3 is as follows.

  When the restricting portion 80 is in the second position in FIG. 13, the movable portion holding spring 84 of the restricting portion 80 is in the state indicated by reference numeral [14 </ b> A] in FIG. 14 with respect to the convex shape portion 56 of the movable portion 50. Yes. At this time, the convex portion 84f of each leaf spring 84x of the movable portion holding spring 84 and the concave portion 56a of the convex portion 56 of the movable portion main body 51 of the movable portion 50 are in a state in which the fitting is released. They are arranged at positions separated from each other. In this state, the drive unit 90 acts and the regulating unit 80 starts to rotate clockwise in FIG. Then, the leaf spring 84x of the movable portion holding spring 84 approaches the inclined surface 56b of the convex portion 56 of the movable portion main body 51 of the movable portion 50, and the convex portion 84f comes into contact with the inclined surface 56b before long. When the restricting portion 80 continues to rotate in the same direction, the leaf spring 84x is deformed while the convex portion 84f moves while sliding along the inclined surface 56b. When the convex portion 84f goes up the inclined surface 56b, the convex portion 84f then slides on the upper surface of the convex portion 56. And the convex part 84f falls and fits into the recessed part 56a. In this way, the state transitions to the state indicated by reference numeral [14B] in FIG. 14, that is, the state in which the restricting portion 80 is in the first position.

  Next, the action of the movable portion holding spring 84 when the restricting portion 80 transitions from the first position in FIG. 3 to the second position in FIG. 13 is as follows.

  When the restricting portion 80 is in the first position in FIG. 3, the movable portion holding spring 84 of the restricting portion 80 is in the state indicated by reference numeral [14B] in FIG. 14 with respect to the convex shape portion 56 of the movable portion 50. Yes. At this time, the convex portion 84 f of each leaf spring 84 x of the movable portion holding spring 84 is in a state of being fitted into the concave portion 56 a of the convex portion 56 of the movable portion main body 51 of the movable portion 50. In this state, the drive unit 90 acts and the regulating unit 80 starts to rotate counterclockwise in FIG. Then, the convex portion 84 f of the leaf spring 84 x of the movable portion holding spring 84 is separated from the concave portion 56 a of the convex portion 56 of the movable portion main body 51 of the movable portion 50 and rides on the upper surface of the convex portion 56. When the regulating portion 80 continues to rotate in the same direction, the convex portion 84f slides and moves on the upper surface of the convex portion 56, and eventually slides along the inclined surface 56b in the downward direction. Then, the convex portion 84f is detached from the inclined surface 56b. At this time, the bending deformation of the leaf spring 84x is released. In this way, the state transitions to the state indicated by reference numeral [14A] in FIG.

  As described above, the inclined surface 56b provided on the convex portion 56 smoothly smoothes the convex portion 84f when the convex portion 84f is fitted into the concave portion 56a of the convex portion 56 as the leaf spring 84x rotates. It is provided in order to be able to guide to the recess 56a.

  At this time, one of the plurality of support shafts 83 of the restricting portion 80 is fitted between the bent portion 73b of the restricting portion holding spring 73 and the first inclined portion 73a. The rotation is locked. That is, at this time, the restricting portion holding spring 73 (first urging member) restricts the movement of the restricting portion 80 in the rotation direction, and locks the restricting portion 80 with respect to the fixed portions (60, 70). Fixed support.

  At the same time, when the restricting portion 80 is in the second position (see FIG. 13), the contact between the inward hemispherical convex portion 86 of the restricting portion 80 and the outer wall surface of the convex shape portion 56 of the movable portion 50 is released. It is arranged at a distant position. As a result, the restricting portion 80 allows the movable portion 50 to move within a plane orthogonal to the optical axis O.

  Thus, when the restricting portion 80 is in the second position shown in FIG. 13, the movable portion 50 is allowed to move in a plane orthogonal to the optical axis O. Accordingly, this makes it possible to perform a predetermined image blur correction operation without any trouble.

  Here, an outline of the operation of the image pickup apparatus including the lens barrel on which the image shake correction apparatus 40 according to the above-described embodiment is mounted will be described with reference to a flowchart of FIG.

  First, it is assumed that the imaging apparatus 1 equipped with the image shake correction apparatus 40 of the present embodiment is in an imaging preparation state in which the main power is turned on and an imaging operation can be performed. In this state, a control unit (not shown) in the imaging apparatus 1 monitors input signals from various operation members and the like.

  In step S1 of FIG. 18, the control unit of the imaging device 1 confirms whether or not a half-press operation has been performed with the shutter release button (pressing operation member 14). If the input signal from the shutter release button is confirmed, the process proceeds to the next step S2.

  In step S <b> 2, the control unit of the imaging apparatus 1 confirms the setting state of the image blur correction operation mode. If it is confirmed that the image blur correction mode is on, the process proceeds to step S3. If it is confirmed that the image blur correction mode is in the off state, the process proceeds to step S13.

  In step S <b> 3, the control unit of the imaging apparatus 1 starts execution of a control process (movable part position control process) for the position of the movable part 50 in a plane orthogonal to the optical axis O.

  In step S <b> 4, the control unit of the imaging apparatus 1 performs drive control that causes the drive unit 90 to rotationally drive the restriction unit 80 from the first position to the second position.

  Subsequently, in step S5, the control unit of the imaging device 1 starts an image blur correction control process.

  In step S6, the control unit of the imaging apparatus 1 confirms whether or not the shutter release button has been fully pressed. If the input signal from the shutter release button is confirmed, the process proceeds to the next step S7.

  In step S <b> 7, the control unit of the imaging apparatus 1 starts a drive control process for the shutter mechanism.

  In step S <b> 8, the control unit of the imaging device 1 starts an exposure process using an imaging element or the like.

  In step S9, the control unit of the imaging device 1 ends the exposure process of the process in step S8 described above.

  In step S <b> 10, the control unit of the imaging apparatus 1 performs drive control that causes the drive unit 90 to rotationally drive the restriction unit 80 from the second position to the first position.

  In step S <b> 11, the control unit of the imaging device 1 ends a series of movable unit position control processes.

  In step S <b> 12, the control unit of the imaging apparatus 1 confirms an input signal from an operation member that performs an on / off operation of the main power supply, and confirms whether an instruction signal for switching the power supply state to the off state is generated. Here, when the instruction signal for switching the power supply state to the off state is confirmed, the series of processing sequences is ended. On the other hand, if the instruction signal for switching the power supply state to the off state is not confirmed, the process returns to the above-described step S1, and the subsequent processes are repeated.

  On the other hand, when it is confirmed in the process of step S2 that the image blur correction mode is off and the process proceeds to the process of step S13, in step S13, the control unit of the imaging apparatus 1 performs all of the shutter release buttons. It is confirmed whether or not a push operation has been performed. If the input signal from the shutter release button is confirmed, the process proceeds to the next step S14.

  In step S <b> 14, the control unit of the imaging apparatus 1 starts a drive control process for the shutter mechanism.

  In step S <b> 15, the control unit of the imaging apparatus 1 starts an exposure process using an imaging element or the like.

  In step S16, the control unit of the imaging device 1 ends the exposure process of the process in step S8 described above. Thereafter, the process proceeds to step S12, and the subsequent processes are repeated.

  In the processing period of steps S1 to S4, the processing period of steps S10 to S12, and the processing period of steps S13 to S16 in FIG. The movable portion 50 is held at the first position. Thereby, the second lens holding frame can be reliably arranged at a predetermined position. On the other hand, during the period of steps S5 to S9 in FIG. 18 described above, that is, the period during which the image blur correction control process is executed (including the exposure period), the restricting portion 80 is disposed at the second position and the movable portion 50 is placed. It is in the state which canceled the holding state. As a result, reliable and accurate image blur correction control processing can be performed.

  As described above, according to the image blur correction device 40 of the above-described embodiment, the fixing unit (first fixing unit 60 and second fixing unit 60) and the second lens group 32 (optical member) are held and fixed. In the image blur correction apparatus 40 having a movable portion 50 that moves in a plane (vertical plane) orthogonal to the optical axis O of the second lens group 32 (optical member) relative to the portion (60, 70). A restricting portion 80 that moves between a first position (see FIG. 3) and a second position (see FIG. 13) by rotating with respect to the portion (60, 70), and the fixing portion (60, 70). ), And a driving unit 90 that rotationally drives the regulating unit 80. When the regulating unit 80 is rotationally moved to the first position (see FIG. 3) by the driving unit 90, The above-mentioned possibility is maintained while maintaining a state in which rotation with respect to the fixing portion (60, 70) is allowed. The portion 50 is pressed and supported in the direction along the optical axis O, and the restricting portion 80 is moved to the second position (see FIG. 13) by the driving portion 90, and is moved to the movable portion 50. The pressing support is released and the fixed support (60, 70) is fixedly supported.

  In this case, a restricting portion holding spring 73 (first urging member) that fixes and supports the restricting portion 80 with respect to the fixing portions (60, 70) is disposed on the fixing portion (70). The restricting portion 80 is provided with a movable portion holding spring 84 (second biasing member) that presses and supports the movable portion 50 in the direction along the optical axis O.

  The restricting portion holding spring 73 (first urging member) engages the restricting portion 80 when the restricting portion 80 is rotationally moved to the second position (see FIG. 13) by the driving portion 90. The movable portion holding spring 84 (second biasing member) stops the movable portion 50 when the restricting portion 80 is rotationally moved to the first position (see FIG. 3) by the driving portion 90. Lock.

  With such a configuration, according to the image blur correction device 40 of the present embodiment, when the restricting portion 80 is in the first position (see FIG. 3), the movable holding the second lens group 32 (optical member) 32. Since the movement of the unit 50 in the plane orthogonal to the optical axis O can be reliably controlled, for example, the posture of the imaging apparatus 1 to which the image blur correction apparatus 40 is applied is changed, or a shutter or a mirror is driven. In this case, even if an internal impact or an unintended external force is applied, fluctuations in the position of the movable portion 50 can be reliably suppressed.

  When the restricting portion 80 is in the second position (see FIG. 13), the movement of the restricting portion 80 is restricted to maintain the immovable state, and the movable portion 50 is lighted so that the image blur correction operation can be performed. It can be movable in a plane perpendicular to the axis O. Therefore, when the image blur correction device 40 is used, unintended position fluctuations of the restriction unit 80 can be suppressed.

[Modification]
In the image blur correction device 40, the form of the movable part holding spring 84 provided in the restriction part 80 is not limited to the form shown in the above-described embodiment (see FIG. 12), and other forms are also conceivable. It is done.

  For example, as a modification of the movable portion holding spring, a configuration as shown in FIG. 15 is conceivable. FIG. 15 is a diagram showing a configuration of a modified example of the movable part holding spring in the image blur correction device of the present embodiment, and at the same time, a diagram showing the action of the movable part holding spring.

  The basic configuration of the movable portion holding spring 84A in this modification is substantially the same as that of the above-described embodiment, and the shape of the leaf spring 84Ax is different. That is, the movable portion holding spring 84A of the present modification has a substantially annular shape as a whole, and a plurality of leaf springs 84Ax connected from the annular portion are provided on the inner peripheral side. Is the same as in the above embodiment.

  In the present modification, the plurality of leaf springs 84Ax have an arm portion projecting radially from the annular portion toward the inner periphery, and an extending portion 84c extending from the arm portion in the circumferential direction. A convex portion 84f is provided on the lower surface (the surface facing the movable portion 50) in the vicinity of the distal end portion of the extending portion 84c. Therefore, the leaf spring 84Ax of the present modification is configured by omitting the slope portion 84d and the tip support portion 84e in the above-described embodiment.

  Also with such a shape, the leaf spring 84Ax is formed in a cantilever shape with the arm portion as a support portion, and can be configured to be deformable in the direction along the optical axis O at the tip of the extension portion 84c.

  Therefore, also in the embodiment shown in this modification, as shown in FIG. 15, the movable portion holding spring 84A has the convex portion 84f of each leaf spring 84Ax by the movable portion 50 by substantially the same action as in the above-described embodiment. When the convex portion 56 is engaged with the concave portion 56a, the movable portion 50 can be pressed and supported in the direction along the optical axis O and locked.

[Second Modification]
Further, for example, as another modification of the movable part holding spring, in addition to the leaf spring type shown in the above-described example, the following forms can be considered. FIG. 16 is a diagram illustrating a configuration of a second modification of the movable portion holding spring in the image blur correction device of the present embodiment, and is a plan view showing only the restriction portion in the image blur correction device. . FIG. 17 is a cross-sectional view illustrating an outline of the overall configuration of an image shake correction apparatus according to a second modification of the movable portion holding spring in the image shake correction apparatus according to the present embodiment. FIG. 17 is a cross-sectional view of the image blur correction apparatus corresponding to a cross section taken along line [17]-[O]-[17] in FIG.

  The basic configuration of the image blur correction apparatus 40A shown in the present modification is substantially the same as the configuration of the above-described embodiment. In this modification, instead of the leaf spring type movable portion holding spring 84 applied in the above-described embodiment, an urging portion 87 (see FIGS. 16 and 17) formed integrally with the restriction portion 80A is provided. Correspondingly, the convex portion 56A provided on the outer peripheral side of the lens holding portion 51a of the movable portion main body 51 of the movable portion 50A is different in that a tapered surface 56Ac that receives the biasing portion 87 is provided. . Other configurations are the same as those of the above-described embodiment.

  The urging portion 87 is formed so as to protrude radially inward on the inner peripheral surface of the restricting portion 80A, and is a hemisphere in the direction along the optical axis O and directed downward (to the movable portion 50A side). It has a convex part. Here, the restricting portion 80A is formed of, for example, a resin material, and the urging portion 87 is formed integrally with the restricting portion 80A. Therefore, the urging portion 87 formed in a cantilever shape so as to protrude from the restricting portion 80A is formed so as to be elastic and can function as the second urging member. ing. In addition, in this modification, as shown in FIG. 16, the urging | biasing part 87 has shown the example formed three at intervals of the angle of about 120 degree | times in the circumferential direction. And the urging | biasing part 87 is arrange | positioned in the same site | part in the circumferential direction as the said inward hemispherical convex part 86. FIG.

  Correspondingly, the convex portion 56A provided on the movable portion 50A side is formed with a taper 56Ac on the outer peripheral surface side. The tapered surface 56Ac is an inclined surface formed in a conical shape with the optical axis O as an axis. The tapered surface 56Ac is configured so that the urging portion is in the state in which the restricting portion 80A is in the first position (movable portion holding state; see FIG. 3) when the image shake correcting device is assembled. The hemispherical convex portion 87 is a portion that is pressed and supported. At the same time, the inward hemispherical convex portion 86 of the restricting portion 80A is in contact with the outer wall surface of the convex portion 56A, thereby restricting movement of the movable portion 50A in the plane perpendicular to the optical axis O.

  According to the second modification configured as described above, when the restricting portion 80A is in the first position, the hemispherical convex portion of the biasing portion 87 presses the tapered surface 56Ac of the convex portion 56A of the movable portion 50A. To do. At this time, the urging force of the urging portion 87 in the direction along the optical axis O is divided into a direction along the optical axis O and a direction perpendicular to the optical axis O by the tapered surface 56Ac, and is applied to the movable portion 50A. work. In this case, the force acting in the direction orthogonal to the optical axis O by the urging force of the urging portion 87 is exerted on the movable portion 50A from the outside toward the optical axis O from three directions. Therefore, according to this modification, the urging force of the urging portion 87 presses and supports the movable portion 50A in the direction along the optical axis O, and the optical axis from the outside in a plane orthogonal to the optical axis O. Since it works toward O, the holding of the movable portion 50A in the same plane can be further stabilized.

  Note that the present invention is not limited to the above-described embodiment, and various modifications and applications can of course be implemented without departing from the spirit of the invention. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if several constituent requirements are deleted from all the constituent requirements shown in the above-described embodiment, if the problem to be solved by the invention can be solved and the effect of the invention can be obtained, this constituent requirement is deleted. The configured structure can be extracted as an invention. Furthermore, constituent elements over different embodiments may be appropriately combined.

  The present invention is not limited to an imaging device that is an electronic device specialized for an imaging function such as a digital camera, and other forms of electronic devices having an imaging function, such as a mobile phone, a smartphone, a recording device, and an electronic notebook , Personal computers, tablet terminal devices, game devices, portable TVs, watches, navigation devices using GPS (Global Positioning System), and other electronic devices with various imaging functions.

  Furthermore, the present invention can be similarly applied to an electronic device having a function of acquiring an image using an image sensor and displaying the acquired image on a display device, for example, an observation device such as a telescope, binoculars, and a microscope.

1 …… Imaging device,
DESCRIPTION OF SYMBOLS 10 ... Apparatus main body, 11 ... Image pick-up element, 14 ... Push-type operation member, 15 ... Rotary-type operation member, 16 ... Lever-type operation member,
30 ... Lens barrel, 32 ... Second lens group,
40 …… Image blur correction device,
50, 50A ... movable parts,
51 …… Moving part main body, 51a …… Lens holding part, 51b …… Opening, 51c …… Plain part, 52 …… Spring hook part, 53 …… Biasing spring, 54 …… Hall element, 55 …… Ball holder Surface, 56, 56A ... convex portion, 56a ... concave portion, 56b ... inclined surface, 56Ac ... taper surface, 57 ... drive coil,
60 …… First fixing portion,
61 …… Fixing portion main body, 61a …… Plane portion, 61b …… Opening, 61c …… Outer wall portion, 61d …… Hole portion, 62 …… Spring hook portion, 64 …… Ball, 65 …… Ball receiving portion, 67 ... Drive magnets
70 …… Second fixing part,
70a... Plane portion, 70b... Opening, 70c... Stepped plane portion, 72... Position detecting magnet, 73... Restricting portion holding spring, 73a ... first inclined portion, 73b. ... 2nd inclined part, 74 ... yoke, 75 ... magnet, 76 ... groove part, 77 ... support shaft,
80, 80A ...... Regulatory Department,
80a ...... Flat surface part, 80b ...... Opening, 81 ...... Arm part, 82 ...... Coil, 83 ...... Support shaft, 84,84A ... Moving part holding spring, 84a ...... Ring part, 84b ... Arm part , 84c …… Extension part, 84d …… Slope part, 84e …… Tip support part, 84f …… Protrusion part, 84x, 84Ax …… Plate spring, 85 …… Outward hemispherical convex part, 86 …… Inward hemispherical convex part , 87 …… Biasing part,
90 …… Drive unit,

Claims (8)

A fixed part;
A movable part that holds an optical member and moves in a plane perpendicular to the optical axis of the optical member with respect to the fixed part;
A restricting portion that moves between a first position and a second position by rotating with respect to the fixed portion;
A drive unit that rotationally drives the regulating unit with respect to the fixed unit;
Comprising
When the restricting portion rotates and moves to the first position, the restricting portion presses and supports the movable portion in a direction along the optical axis while maintaining a state in which the rotation with respect to the fixed portion is allowed. The image blur correction apparatus according to claim 1, wherein when the rotational movement is performed to the position 2, the pressing support to the movable part is released and the fixed support is fixed to the fixed part. A first urging member that is disposed on the fixing portion and fixes and supports the restricting portion with respect to the fixing portion;
A second urging member that is disposed in the restricting portion and presses and supports the movable portion in a direction along the optical axis;
Further comprising
The first urging member locks the restricting portion when the restricting portion rotates and moves to the second position,
The image blur correction device according to claim 1, wherein the second urging member locks the movable portion when the restricting portion rotates and moves to the first position. The drive unit is
A magnet disposed in the fixed portion and formed in an arc shape;
A coil disposed in the restricting portion so as to face the magnet;
The image blur correction apparatus according to claim 1, comprising:   The image blur correction apparatus according to claim 2, wherein the first biasing member and the second biasing member are leaf springs. The movable part further has a convex part protruding in the radial direction and the direction along the optical axis,
3. The second urging member presses one surface of the convex portion in a direction along the optical axis O when the restricting portion is disposed at the first position. Image shake correction device. The convex portion has an inclined surface formed in a conical shape with the optical axis as an axis.
The restricting portion includes a biasing portion that contacts the inclined surface and presses and supports the movable portion in a direction along the optical axis.
The image blur correction apparatus according to claim 5, further comprising:   The urging portion regulates movement of the movable portion in a direction along the optical axis and movement in a plane perpendicular to the optical axis by pressing and supporting the inclined surface in a direction along the optical axis. The image blur correction apparatus according to claim 6. The restricting portion further includes a protruding portion that protrudes inward in the radial direction,
The protruding portion abuts on the outer surface of the convex portion when the restricting portion is disposed at the first position, and restricts movement of the movable portion in a plane perpendicular to the optical axis. The image blur correction apparatus according to claim 5, wherein

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