JP2011150136A - Blur correction device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blur correction device capable of achieving miniaturization, while improving the degree of freedom in handling of a flexible printed wiring board with a simple structure. <P>SOLUTION: The blur correction device includes: a base which is fixed to an optical axis; a movable unit which holds an image sensor or an optical element and moves on a plane perpendicular to the optical axis to the base; and the flexible printed wiring board whose base end is fixed to the movable unit and whose leading end extends to the outside of the device, wherein the flexible printed wiring board has a plane part superimposed on the movable unit as seen from an optical axis direction, and extending along the plane. The movable unit has a protrusive supporting part protruding toward the plane part of the flexible printed wiring board in an area where it is superimposed on the flexible printed wiring board as seen from the optical axis direction. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a shake correction apparatus that reduces image blur by moving an image sensor or an optical element.

  In an imaging device such as a camera, image blurring on the imaging plane is reduced by moving an imaging element or a lens (optical element) disposed on the optical axis of the imaging lens according to the movement of the imaging device. An image stabilizer is known. For example, Japanese Patent Application Laid-Open No. 2008-46418 discloses a shake correction apparatus that moves an image sensor. The blur correction apparatus disclosed in Japanese Patent Application Laid-Open No. 2008-46418 has a configuration in which the image sensor is moved in two directions on a plane parallel to the light receiving surface.

  In order to reduce the size of the shake correction device, a flexible printed wiring board is generally used for electrical connection between a movable part that holds and moves an image sensor or an optical element and a fixed base part. Is.

  Since the flexible printed wiring board has a flat shape and a deformation direction in which it is deformed with a low load is determined, an electrical connection between the movable part that holds and moves the imaging element or the optical element and the fixed base part When connecting, it is necessary to provide a configuration in which a plurality of bent portions are provided on the flexible printed wiring board and the flexible printed wiring board is deformed with a low load in accordance with the movement of the movable portion in two directions.

JP 2008-46418 A

  For example, if the flexible printed wiring board is routed to a position that overlaps the movable part when viewed from the optical axis direction in order to reduce the size of the shake correction leaving, the flexible printed wiring board is deformed at the overlapping position and interferes with the movable part. There is a problem that it ends up. In order to avoid such interference, it is necessary to stick a rigid plate member such as a metal plate in order to stiffen the flexible printed wiring board and make it difficult to deform. Such a configuration for avoiding interference between the flexible printed wiring board and the movable portion hinders the reduction of the size of the shake correction apparatus. In addition, the number of man-hours for assembling the shake correction device also increases.

  The present invention has been made in view of the above-described problems, and provides a shake correction device that can improve the degree of freedom of handling of a flexible printed wiring board with a simple structure and realize downsizing. Objective.

  The blur correction device of the present invention is a blur correction device that reduces blurring of an image by moving an image sensor or an optical element, and includes a base unit fixed with respect to an optical axis, the image sensor or the optical element. A movable part that holds the element and moves on a plane perpendicular to the optical axis with respect to the base part, and a flexible printed wiring board whose base end part is fixed to the movable part and whose distal end part extends outside the apparatus The flexible printed wiring board has a plane part that overlaps the movable part when viewed from the optical axis direction and extends along the plane, and the movable part. Has a convex support portion protruding toward the flat portion of the flexible printed wiring board in a region overlapping with the flexible printed wiring board when viewed from the optical axis direction.

  ADVANTAGE OF THE INVENTION According to this invention, the blurring correction apparatus which can improve the freedom degree of handling of a flexible printed wiring board with simple structure and can implement | achieve size reduction can be provided.

It is a perspective view which shows the front side of an imaging device. It is sectional drawing of a blurring correction apparatus and a lens barrel. It is the front view which looked at the blurring correction apparatus from the optical axis direction. It is a rear view of a shake correction apparatus. It is a perspective view of the back side of a shake amendment device. It is sectional drawing of a blurring correction apparatus. It is a perspective view of a flexible printed wiring board. It is a rear view of the shake correction apparatus in a state where the flexible printed wiring board is removed. It is a rear view of the shake correction apparatus in a state where a hard substrate is removed. It is a perspective view of a base part. It is a perspective view of the 1st movable part. It is sectional drawing of the support part of 2nd Embodiment.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In each drawing used for the following description, the scale is different for each component in order to make each component large enough to be recognized on the drawing. It is not limited only to the quantity of the component described in the figure, the shape of the component, the ratio of the size of the component, and the relative positional relationship of each component.

(First embodiment)
A configuration of an imaging apparatus 100 including the shake correction apparatus 1 according to the present embodiment will be described with reference to FIG. As shown in FIG. 1, the imaging apparatus 100 includes an imaging lens 4, a lens barrel 3 that holds the imaging lens 4, and an imaging element 2 disposed on the optical axis O of the imaging lens 4. It is a so-called digital camera. Although not shown, the imaging apparatus 100 is provided with a displacement detection unit including a gyro sensor or the like for detecting the amount of movement of the imaging apparatus 100 on a predetermined axis.

  The image pickup device 2 outputs an electrical signal corresponding to light incident on the light receiving surface at a predetermined timing. For example, the image pickup device 2 is generally called a CCD (charge coupled device) or a CMOS (complementary metal oxide semiconductor) sensor. Or various other types of image sensors can be applied. The imaging element 2 is held at a predetermined position in the housing 101 of the imaging apparatus 100 via the shake correction apparatus 1.

  In the following description, the optical axis of the photographic lens 4 that is a photographic optical system is indicated by “O”, and the axis parallel to the optical axis O is the Z axis. Of the directions along the Z axis (hereinafter referred to as the Z axis direction), the object side (subject side) is defined as the front, and the image side (imaging side) of the imaging lens 4 is defined as the rear. Two axes orthogonal to each other on a plane orthogonal to the Z-axis are defined as an X-axis and a Y-axis.

  As will be described in detail later, the blur correction device 1 is configured such that the image sensor 2 is orthogonal to the optical axis O of the imaging lens 4 in accordance with the amount of movement of the imaging device 100 (the amount of blur of the optical axis O) detected by the displacement detector. The movement of the subject image on the light receiving surface of the image sensor 2 is reduced by moving the image on a plane (on a plane parallel to the light receiving surface of the image sensor 2). That is, the shake correction apparatus 1 is configured to be able to move the image sensor 2 on the XY plane. A method for reducing image blur by moving the image sensor 2 in this manner is generally called a sensor shift method.

  In the imaging apparatus 100 of the present embodiment illustrated in FIG. 1, the lens barrel 3 that houses the imaging lens 4 is configured integrally with the housing 101. It may be removable.

  Next, the configuration of the shake correction apparatus 1 of the present embodiment will be described with reference to FIGS. As shown in FIG. 2, the blur correction device 1 is configured integrally with a lens barrel 3 that holds an imaging lens 4. In this embodiment, as an example, the lens barrel 3 has a configuration called a retractable barrel that expands and contracts in the Z-axis direction. The lens barrel 3 is expanded and contracted by a driving force of a driving device (not shown) provided with an electric motor or the like. Since the configuration of the lens barrel 3 is publicly known, the description thereof will be omitted below, and only the configuration of the shake correction apparatus 1 will be described. Needless to say, the blur correction device 1 may be separated from the lens barrel 3.

  FIG. 3 is a front view of the shake correction apparatus 1 when the shake correction apparatus 1 with the lens barrel 3 removed is viewed from the front side in the Z direction. Here, in the present embodiment, as an example, the light receiving surface of the image sensor 2 is assumed to be rectangular when viewed from the front in the Z direction. In this embodiment, it is assumed that the long side of the light receiving surface of the image sensor 2 is substantially parallel to the X axis and the short side is substantially parallel to the Y axis.

  The shake correction apparatus 1 holds the imaging device 2 behind the imaging lens 4 so that the light receiving surface is orthogonal to the optical axis O of the imaging lens 4, and holds the imaging device 2 on an XY plane parallel to the light receiving surface. It is possible to move within the movement range.

  The shake correction apparatus 1 generally has a base 10 whose position is fixed with respect to the optical axis O of the imaging lens 4 and an imaging element 13 and can move relative to the base 2 on the XY plane. And a driving unit that generates a driving force for moving the moving unit relative to the base unit 10.

  In addition, the blur correction device 1 includes a flexible printed wiring board having flexibility for electrically connecting the blur correction device 1 to a power supply device, an image processing device, a control device, and the like (not shown) of the imaging device 100. 40 and 50 (hereinafter referred to as FPC) are provided.

  The FPC 40 is electrically connected mainly to a plurality of electronic components that constitute the drive unit, and the distal end portion 41 extends in the outer peripheral direction of the base unit 10. Further, as shown in FIG. 6, the FPC 50 has a base end portion 54 connected to a hard substrate 70 on which the image pickup device 2 is mounted, and a tip end portion 55 extending outside the image pickup apparatus 1. . The tip portions 41 and 55 are connected to an electronic connector (not shown) provided in the housing 101 of the imaging device 100. Details of the FPCs 40 and 50 will be described later.

  Below, the detailed structure of the blurring correction apparatus 1 is demonstrated. The base 10 is a member whose relative position is determined with respect to the optical axis O of the imaging lens 4. In this embodiment, the base unit 10 is fixed inside the housing 101 of the imaging device 100. When the lens barrel 3 and the shake correction apparatus 1 are configured integrally as in the present embodiment, the base unit 10 may constitute a part of the lens barrel 3. .

  The movable part is supported so as to be movable in the Y-axis direction with respect to the base part 10, and is supported so as to be movable in the X-axis direction with respect to the second movable part 20. The first movable part 30 to be held is provided.

  The driving unit includes a second motor 25 that is an actuator that generates a driving force for moving the second movable unit 20 in the Y-axis direction with respect to the base unit 10, and the first movable unit 30 with respect to the second movable unit 20. And a first motor 35 that is an actuator that generates a driving force for moving in the X-axis direction. In addition, the drive unit includes a first origin detection sensor 36 and a second origin detection sensor 26 that are photo interrupters used when the first motor 35 and the second motor 25 perform the origin detection operation.

  More specifically, as shown in FIG. 10, the base 10 is a substantially rectangular frame-like member having an opening 64 provided at the center when viewed from the Z-axis direction. A first motor attachment portion 66 and a second motor attachment portion 65 for attaching the first motor 35 and the second motor 25 are provided on the outer peripheral portion of the base portion 10. In addition, sensor mounting portions 68 and 67 for mounting the first origin detection sensor 36 and the second origin detection sensor 26 are provided on the outer peripheral portion of the base portion 10.

  As shown in FIGS. 3 and 9, guide shafts 21 and 22 extending in the Y-axis direction are fixed to both sides of the opening 64 of the base 10 in the X-axis direction. The guide shafts 21 and 22 are for supporting the second movable portion 20 in the opening 64 so as to be able to translate relative to the base portion 10 only in the Y-axis direction. In other words, the second movable portion 20 is restricted from moving in the X-axis direction and the Z-axis direction and rotating around the X-axis, Y-axis, and Z-axis in a state where it is supported by the guide shafts 21 and 22.

  Further, the second movable portion 20 is biased to one side in the Y-axis direction by springs 23 and 24 in order to remove backlash in a state where the second movable portion 20 is supported by the guide shafts 21 and 22.

  In addition, on the back side of the outer peripheral portion of the base portion 10, an FPC housing portion 69 that is a concave portion that opens toward the rear in the Z-axis direction is formed. In this embodiment, the FPC accommodating portion 69 is provided on one of the sides extending in the X-axis direction of the base portion 10 having a substantially rectangular frame shape. The FPC accommodating portion 69 has a substantially rectangular opening shape whose longitudinal direction is the X-axis direction. As will be described in detail later, the FPC housing portion 69 is a space portion in which the folded portion 56 of the FPC 50 that is electrically connected to the imaging device 2 is housed.

  In addition, convex bosses 61, 62, and 63 that protrude rearward in the Z-axis direction are formed on the back surface of the base 10. Each of the bosses 61, 62, and 63 has a cylindrical shape with a predetermined diameter, and abutting portions 61a, 62a, and 63a having a diameter larger than that of the distal end side are provided at the respective base end portions. The ends of the abutting portions 61a, 62a, and 63a on the rear side in the Z-axis direction are on the same XY plane. That is, the end portions of the abutting portions 61a, 62a, and 63a are substantially parallel to a plane on which the movable portion that holds the imaging device 2 moves.

  Of the three bosses, the two bosses 61 and 62 are arranged so as to sandwich the opening of the FPC housing portion 69 provided in the base portion 10. In the present embodiment, the bosses 61 and 62 are disposed on both sides in the longitudinal direction of the opening of the FPC housing portion 69, that is, on both sides in the X-axis direction.

  The second movable portion 20 is a frame-like member having an opening at the center when viewed from the Z-axis direction. Guide shafts 31 and 32 extending in the X direction are fixed to both sides in the Y axis direction of the opening of the second movable portion 20. The guide shafts 31 and 32 are for supporting the first movable part 30 so as to be capable of translational movement only in the X-axis direction with respect to the second movable part 20 in the opening. That is, in the state where the first movable portion 30 is supported by the guide shafts 31 and 32, the movement in the Y-axis direction and the Z-axis direction with respect to the second movable portion 20 is restricted, and the X-axis, Y-axis, and Z-axis The surrounding rotation is restricted.

  As described above, the second movable portion 20 that supports the first movable portion 30 is supported so as to be capable of translational movement only in the Y-axis direction with respect to the base portion 10. It can be translated relative to the base 10 in the X-axis direction and the Y-axis direction. In other words, the first movable unit 30 is capable of translational movement on the XY plane orthogonal to the optical axis O of the imaging lens 4.

  Further, the first movable portion 30 is biased to one side in the X-axis direction by springs 33 and 34 in order to remove backlash in a state where the first movable portion 30 is supported by the guide shafts 31 and 32.

  More specifically, as shown in FIG. 11, the first movable portion 30 is a frame-like member having an opening 72 at the center when viewed from the Z-axis direction. The image sensor 2 is fixed to the first movable part 30. The imaging element 2 is fixed to the first movable unit 30 so that the light receiving surface is exposed forward in the Z-axis direction through the opening 72 of the first movable unit 30 with the light receiving surface parallel to the XY plane. Therefore, the image pickup device 2 is held by the movable portion so as to be capable of translational movement on the XY plane orthogonal to the optical axis O of the imaging lens 4 in a state where the light receiving surface is orthogonal to the optical axis O.

  As shown in FIGS. 6 and 8, a hard substrate 70, which is a relatively rigid wiring substrate made of a glass epoxy substrate or the like, is bonded to the back side of the image sensor 2. That is, the hard substrate 70 moves in translation on the XY plane orthogonal to the optical axis O of the imaging lens 4 together with the first movable portion 30. A base end portion 54 of an FPC 50, which will be described in detail later, is joined to the hard substrate 70. Further, the peripheral circuit member of the image sensor 70 may be mounted on the hard substrate 70.

  Further, a convex support portion 71 that protrudes rearward in the Z-axis direction is formed on the back surface portion of the first movable portion 30. The support portion 71 protrudes rearward from the hard substrate 70 in the Z-axis direction through a through hole provided in the hard substrate 70. The distal end portion (end portion on the rear side in the Z-axis direction) of the support portion 71 has a substantially spherical shape.

  In a state where the second movable portion 20 and the first movable portion 30 are disposed in the opening 64 of the base portion 10, that is, in a state where the shake correction device 1 is assembled, the tip portion of the support portion 71 is the base The bosses 61, 62, and 63 formed on the portion 10 are positioned on substantially the same plane as the abutting portions 61 a, 62 a, and 63 a.

  Further, the first movable portion 30 is formed with a first origin dog 74 and a second origin dog 73. The first origin dog 74 and the second origin dog 73 are located in the vicinity of the first origin detection sensor 36 and the second origin detection sensor 26 fixed to the base 10 in a state where the shake correction apparatus 1 is assembled. As described above, the first movable portion 30 extends from the outer peripheral portion.

  Although not shown in detail, the drive unit includes a Y-direction drive unit that moves the second movable unit 20 in the Y-axis direction and an X-direction drive unit that moves the first movable unit 30 in the X direction. In addition to the second motor 25 and the second origin detection sensor 26 described above, the Y-direction drive unit is screwed into a feed screw that extends in the Y direction and is driven to rotate by the second motor 25, and is screwed into the feed screw. And a nut that engages with the movable portion 20. When the feed screw is rotated by the second motor 25, the second movable portion 20 engaged with the nut moves in the Y-axis direction. The origin detection operation of the second motor 25 is performed by detecting the second origin dog 73 extending from the first movable part 30 by the second origin detection sensor 26.

  In addition to the first motor 35 and the first origin detection sensor 36 described above, the X direction drive unit is screwed into a feed screw that extends in the X direction and is driven to rotate by the first motor 35, and is screwed into the feed screw. And a nut that engages with the movable portion 30. When the feed screw is rotated by the first motor 35, the first movable portion 30 engaged with the nut moves in the X-axis direction. The origin detection operation of the first motor 35 is performed by detecting the first origin dog 74 extending from the first movable part 30 by the first origin detection sensor 36.

  Since the configuration of the drive unit configured as described above is well known, detailed description thereof will be omitted. In addition, the structure which moves a movable part with a linear motor may be sufficient as a drive part.

  In the present embodiment, the exteriors of the second motor 25 and the first drive motor 35 are colored differently from the exterior of the base unit 10. Thus, by making the exterior colors of the constituent members of the shake correction apparatus 1 different from those of the motor, the assembled state of the motor can be easily and reliably confirmed visually.

  Next, a configuration of electrical connection of electronic components arranged in the shake correction apparatus 1 having the configuration described above will be described.

  As described above, the first motor 35, the second motor 25, the first origin detection sensor 36, and the second origin detection sensor 26, which are electronic components constituting the drive unit, are disposed on the outer peripheral portion of the base unit 10. ing. As shown in FIG. 5, the first motor 35, the second motor 25, the first origin detection sensor 36, and the second origin detection sensor 26 are connected to an FPC 40 that extends so as to surround the outer periphery of the base unit 10. ing.

  The front end portion 41 of the FPC 40 extending from the base portion 10 is connected to an electronic connector (not shown) provided in the housing 101 of the imaging device 100, whereby the first motor 35, the second motor 25, the first The origin detection sensor 36 and the second origin detection sensor 26 are electrically connected to a power supply device, an image processing device, a control device, and the like of the imaging device 100.

  As described above, in the shake correction apparatus 1 according to the present embodiment, electrical wiring of a plurality of electronic components constituting the drive unit is performed collectively by the FPC 40 arranged along the outer peripheral portion of the base unit 10. As a result, downsizing is realized.

  On the other hand, the image pickup device 2 that is movably held by the movable portion is connected to the FPC 50 via the hard substrate 70. In general, the FPC 50 has a base end portion 54 bonded to a hard substrate 70 and a tip end portion 55 extending outward from the shake correction device 1.

  Specifically, as shown in FIG. 6, the FPC 50 of the present embodiment has a base end portion 54 bonded to the front surface of the hard substrate 70 by soldering, an anisotropic conductive adhesive, or the like. As shown in FIG. 7, the FPC 50 includes six surfaces 50 a to 50 f configured by bending a single flexible film-like substrate at five locations. The surface 50a on which the base end portion 54 of the FPC 50 is formed is substantially parallel to the XY plane. The surface 50 a of the FPC 50 extends from the base end portion 54 toward the FPC housing portion 69 provided on the base portion 10 with a predetermined width. The FPC 50 has a width capable of arranging at least electrical wiring connected to the image sensor 2.

  The FPC 50 is bent forward in the Z-axis direction on the opening of the FPC housing portion 69 and extends toward the bottom surface side of the FPC housing portion 69 (surface 50b). Then, the surface 50 b extending toward the bottom surface side of the FPC housing portion 69 is folded back into a U shape or a V shape at the folded portion 56 and extends toward the opening side of the FPC housing portion 69. (Surface 50c).

  On the surfaces 50b and 50c of the FPC 50 that are folded back in the FPC accommodating portion 69, slits 59 that are cuts provided along the extending direction are provided in the central portion. As described above, by providing the slit in the folded portion 56 of the FPC 50, it is possible to reduce the load for deforming the FPC 50 in the vicinity of the folded portion 56.

  Then, after protruding from the FPC housing portion 69, the FPC 50 is bent at a substantially right angle at the bent portion 57 so as to overlap the back side of the surface 50a having the base end portion 54 (surface 50d). That is, the surface 50d of the FPC 50 is disposed so as to overlap the movable portion of the shake correction device 1 when viewed from the Z-axis direction.

  On the surface 50d of the FPC 50, through holes 51, 52, and 53 are formed at positions corresponding to the three bosses 61, 62, and 63 projecting rearward from the base 10 in the Z-axis direction. The through holes 51, 52, and 53 have shapes that allow the bosses 61, 62, and 63 having a predetermined diameter to be press-fitted therein. Specifically, in the present embodiment, the through holes 51, 52 and 53 have an oval shape, the short direction is smaller than the diameter of the bosses 61, 62 and 63, and the longitudinal direction is the diameter of the bosses 61, 62 and 63. Is bigger than.

  The bosses 61, 62, and 63 may have a shape in which a groove is formed in the circumferential direction in the base end portion, or a so-called reverse tapered shape in which the diameter decreases toward the base end side. Thus, the FPC 50 can be more firmly fixed by making the diameters of the proximal ends of the bosses 61, 62, and 63 smaller than the distal end side.

  The FPC 50 is positioned with respect to the base portion 10 by press-fitting the bosses 61, 62, and 63 into the through holes 51, 52, and 53 until the surface 50d of the FPC 50 abuts against the abutting portions 61a, 62a, and 63a. It is fixed in the state that was done.

  In this state, the surface 50d of the FPC 50 is substantially parallel to the XY plane, which is the plane on which the movable part of the shake correction apparatus 1 moves. Further, in this state, the distal end portion of the support portion 71 protruding rearward from the first movable portion 30 that is a movable portion contacts the surface 50d of the FPC 50.

  The surface 50d of the FPC 50 fixed to the base portion 10 extends to a position where it does not overlap the base portion 10 when viewed from the Z-axis direction, and is bent forward in the Z-axis direction (surface 50e). The surface 50e is further bent in a direction away from the base portion 10 (surface 50f). The front end portion 55 of the FPC 50 is provided on the surface 50f.

  By connecting the front end portion 55 of the FPC 50 extending from the base unit 10 to an electronic connector (not shown) provided in the housing 101 of the imaging device 100, the imaging element 2 is connected to the power supply device of the imaging device 100, It is electrically connected to an image processing device, a control device, and the like.

  In the present embodiment described above, the FPC 50 can be fixed to the shake correction apparatus 1 by a manual operation without using a tool without using a joining member such as a screw, an adhesive, or a double-sided tape.

  Further, in the present embodiment, when viewed from the Z-axis direction, in the region (surface 50d) where the FPC 50 overlaps with the movable part that moves on the XY plane, the first movable part 30 that is a movable part moves from the first movable part 30 to the FPC 50. A support portion 71 that protrudes toward the top is provided. Therefore, according to the present embodiment, the surface 50d of the flexible FPC 50 is held by the support portion 71 while maintaining a planar shape substantially parallel to the XY plane.

  Therefore, it is possible to prevent interference between the FPC 50 and the movable portion excluding the support portion 71, which is caused by deformation of the FPC 50, without attaching a rigid plate member or the like to the FPC 50 and stiffening it. Moreover, since the front-end | tip part contact | abutted to FPC50 of the support part 71 is a substantially spherical shape, the sliding resistance between FPC50 and the support part 71 is small, and when moving a movable part by implementing this invention The amount of load increase is minimized.

  Further, two of the three points for fixing the FPC 50 to the base part 10 include a bent part 57 between the surface 50d fixed to the base part 10 and the surface 50c on which the folded part 56 is formed. It is arrange | positioned so that it may pinch | interpose. When the movable portion of the shake correction apparatus 1 is moved on the XY plane, a force that deforms the vicinity of the bent portion 57 is applied to the bent portion 57. In the present embodiment, the FPC 50 can be reliably fixed to the base portion 10 by providing two fixing points so as to sandwich the bent portion 57 to which such a force is applied.

  As described above, according to the present embodiment, it is possible to reduce the number of parts constituting the shake correction apparatus 1 and to reduce the man-hours required for assembly. Further, since the FPC 50 can be photographed at a position overlapping the movable portion when viewed from the optical axis O direction without using a holding plate member, the degree of freedom in handling the FPC 50 is improved without increasing the number of parts. The correction device 1 can be further downsized.

  In the present embodiment, the support portion 71 is provided on the first movable portion 30. However, the support portion 71 may be provided on a member that moves on the XY plane with respect to the base portion 10. Good. For example, the support part 71 may be provided in the second movable part 20.

(Second Embodiment)
Below, the 2nd Embodiment of this invention is described with reference to FIG. Hereinafter, only differences from the first embodiment will be described, and the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  The shake correction apparatus according to the present embodiment is different only in the configuration of the support portion 71 provided in the first movable portion 30. In the support portion 71a of the present embodiment, a support ball 79 is rotatably embedded at the tip portion. According to the present embodiment, the sliding resistance between the FPC 50 and the support portion 71 in contact with the FPC 50 can be further reduced, and the load necessary for moving the movable portion is reduced, thereby reducing the imaging element. 2 can improve the response of the position control and downsize the drive unit.

  The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist or concept of the invention that can be read from the claims and the entire specification. The apparatus is also included in the technical scope of the present invention.

  For example, the shake correction apparatus according to the above-described embodiment has a form in which image blur is reduced by moving an imaging element. However, the shake correction apparatus according to the present invention moves an optical element such as a lens or a prism. The form which reduces the blurring of an image may be sufficient.

  The blur correction device according to the present invention is not limited to the imaging device described in the above-described embodiment, but is an electronic device having a photographing function, such as a recording device, a mobile phone, a PDA, a personal computer, a game machine, a digital media player, and a television. It can also be applied to lens barrels provided in GPS, watches, etc.

  The blur correction device according to the present invention can be applied not only to an electronic device having a photographing function but also to a lens barrel for an interchangeable lens camera, and is provided in a projection display device such as a projector. It can also be applied to a lens barrel. The lens barrel according to the present invention can also be applied to other forms of optical equipment such as telescopes and binoculars.

1 Shake correction device,
2 image sensor,
3 Lens barrel,
4 Imaging lens,
10 base,
20 second movable part,
21 guide shaft,
22 guide shaft,
23 Spring,
24 Spring,
25 second motor,
26 second origin detection sensor,
30 first movable part,
31 guide shaft,
32 guide shaft,
33 Spring,
34 Spring,
35 first motor,
36 first origin detection sensor,
40 FPC,
41 tip,
50 FPC (flexible printed wiring board),
51 through holes,
52 through holes,
53 through hole,
54 proximal end,
55 Tip,
56 Folding part,
57 bent part,
61 Boss,
62 Boss,
63 Boss,
64 openings,
65 second motor mounting portion,
66 1st motor attachment part,
67 Sensor mounting part,
68 Sensor mounting part,
69 FPC housing,
70 rigid substrate,
71 support part,
72 opening,
73 Second origin dog,
74 First origin dog,
100 imaging device,
101 housing.

Claims (2)

A blur correction device that reduces blurring of an image by moving an image sensor or an optical element,
A base fixed to the optical axis;
A movable part that holds the imaging element or the optical element and moves on a plane perpendicular to the optical axis with respect to the base part;
A flexible printed wiring board having a proximal end fixed to the movable portion and a distal end extending outside the device;
In the shake correction apparatus comprising:
The flexible printed wiring board has a plane portion that overlaps with the movable portion when viewed from the optical axis direction and extends along the plane;
The movable part has a convex support part protruding toward the flat part of the flexible printed wiring board in a region overlapping with the flexible printed wiring board when viewed from the optical axis direction. Blur correction device. The base part has a convex boss protruding toward the flat part,
2. The blur according to claim 1, wherein the flat portion of the flexible printed wiring board has a through hole, and is fixed to the base portion by press-fitting the boss into the through hole. Correction device.

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