WO2022134190A1 - 摄像装置用防振机构、光学系统、相机及电子设备 - Google Patents

摄像装置用防振机构、光学系统、相机及电子设备 Download PDF

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Publication number
WO2022134190A1
WO2022134190A1 PCT/CN2020/142096 CN2020142096W WO2022134190A1 WO 2022134190 A1 WO2022134190 A1 WO 2022134190A1 CN 2020142096 W CN2020142096 W CN 2020142096W WO 2022134190 A1 WO2022134190 A1 WO 2022134190A1
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WO
WIPO (PCT)
Prior art keywords
vibration mechanism
vibration
lens
optical system
imaging device
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Application number
PCT/CN2020/142096
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English (en)
French (fr)
Inventor
色摩和雄
Original Assignee
诚瑞光学(深圳)有限公司
常州市瑞泰光电有限公司
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Publication of WO2022134190A1 publication Critical patent/WO2022134190A1/zh

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/681—Motion detection
    • H04N23/6812—Motion detection based on additional sensors, e.g. acceleration sensors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/682—Vibration or motion blur correction
    • H04N23/685—Vibration or motion blur correction performed by mechanical compensation
    • H04N23/687—Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0007—Movement of one or more optical elements for control of motion blur
    • G03B2205/0023—Movement of one or more optical elements for control of motion blur by tilting or inclining one or more optical elements with respect to the optical axis
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0007—Movement of one or more optical elements for control of motion blur
    • G03B2205/0038—Movement of one or more optical elements for control of motion blur by displacing the image plane with respect to the optical axis
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing

Definitions

  • the present invention relates to an anti-vibration mechanism for an imaging device, an optical system, a camera, and an electronic device with a camera shake correction function.
  • photographing devices including lens driving are widely used in a large number of photographing devices.
  • the application of various portable electronic devices eg, cellular phones, tablet computers, etc.
  • lens-driven camera devices is particularly popular with consumers.
  • a driving mechanism applicable to a lens driving device of a general portable electronic device is generally composed of an autofocus mechanism that adjusts the focal point in the optical axis direction and a camera shake correction mechanism that is driven in a plane perpendicular to the optical axis direction.
  • the camera shake correction mechanism is difficult to reduce in thickness in an integrated mechanism due to the length of the driving amount and the weight of the lens. , the subject of miniaturization.
  • the autofocus mechanism for adjusting the focus driven in the optical axis direction and the lens movement camera shake correction mechanism driven in the plane perpendicular to the optical axis direction can move the lens barrel three-dimensionally, it falls down. Shock countermeasures when it is difficult, etc.
  • the deformation at the time of falling may prevent normal driving, and the upper lens unit may tilt or sink due to the weight of the upper lens unit. enter.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2006-113545
  • Patent Document 2 Japanese Patent Laid-Open No. 2006-133740
  • Patent Document 3 Japanese Patent Laid-Open No. 2006-330678
  • Patent Document 4 Japanese Patent Laid-Open No. 2006-337987
  • Patent Document 5 Japanese Patent Laid-Open No. 2016-224262
  • Patent Document 6 Japanese Patent Laid-Open No. 2017-15772
  • Patent Document 7 Japanese Patent Application Laid-Open No. 2019-225428
  • Patent Document 8 Japanese Patent Application Laid-Open No. 2020-52248
  • the present invention has been made in view of the above problems, and an object of the present invention is to realize a vibration isolation mechanism that saves space without increasing the size of the imaging device in camera shake correction of an imaging device having folded optics.
  • An anti-vibration mechanism is provided in an imaging device including an optical system that moves in an optical axis direction and includes a focus adjustment mechanism, and performs camera shake correction by moving an imaging element in a plane perpendicular to the optical axis direction.
  • the anti-vibration mechanism including the image pickup element is disposed closer to the image side than the image pickup lens group, and has the ability to move on a plane perpendicular to the optical axis; a ball member that is movably held on the frame assembly; the driving member for driving the camera element to move is driven by an electric actuator; the frame assembly includes a movable moving frame, the moving frame is used for vertical It moves along two axes on a plane in the direction of the optical axis; the anti-vibration mechanism further includes an integrated circuit for driving the electric driver and a position detection element during driving; it also includes a flexible substrate for transmitting the signal of the imaging element; also includes A circuit for the power supply of the device for driving the lens.
  • the electric actuator is an SMA wire.
  • the moving frame is provided with a groove for holding the ball member.
  • the anti-vibration mechanism includes a circuit mounted on an upper portion and supplied with a signal line for position detection of a device that drives the lens.
  • the force application direction of the electric actuator is the same as the direction in which the SMA wire and the base attract each other.
  • the base is a metal plate; the support frame is a resin part; the base and the support frame are integrally made.
  • the flexible substrate for energizing the electric actuator is provided in the optical axis direction of the frame holding the imaging element, on the back side of the imaging element, so as to correspond to each moving Bend at least 2 times in the way of the shaft.
  • the flexible substrate for energizing the electric actuator is provided on a plane perpendicular to the optical axis direction of the frame that holds the imaging element, and is located outside the electric actuator so as to correspond to the moving Bend at least 2 times in the way of each axis.
  • An optical system includes the above-mentioned anti-vibration mechanism.
  • the optical system includes a focus adjustment mechanism having a focus adjustment mechanism including a tilting camera shake correction mechanism capable of tilting the lens.
  • the optical system includes a focus adjustment mechanism, which is a focus adjustment mechanism having a zoom mechanism capable of retracting the lens in multiple stages for storage.
  • a focus adjustment mechanism which is a focus adjustment mechanism having a zoom mechanism capable of retracting the lens in multiple stages for storage.
  • the present invention includes a camera including the above-described optical system.
  • the present invention includes a portable electronic device such as a smartphone including the above-described camera.
  • the anti-vibration mechanism for an imaging device of the present invention performs camera shake correction by moving the imaging element in a plane perpendicular to the optical axis using two housings, thereby including focus adjustment arranged on the imaging element
  • the thinning and miniaturization of the mechanism and the lens unit eliminates the need for the lens movement and the camera shake correction mechanism. Since the components of the focus adjustment mechanism and the shake correction mechanism are separated to suppress the natural vibration, the design difficulty can be reduced, and the lens does not need to be
  • the lens barrel moves three-dimensionally at the same time, which reduces the difficulty of designing shock countermeasures when falling, and the centering of the lens barrel becomes easier. Since the lens does not move in the plane direction, the lens of a smartphone or the like can be protruded from the opening. to the minimum.
  • the support member since the support member does not use a leaf spring, it is possible to suppress the possibility of impeding driving due to deformation during falling, and to suppress the inclination and sinking caused by the weight of the upper lens unit, thereby reducing the object surface. impact on performance.
  • the SMA wire and the base of the electric actuator as the urging member can be used to remove the backlash and apply the urging, other members for urging are not required, which contributes to the miniaturization due to the significant reduction of components. , Easy to assemble.
  • the focus adjustment mechanism may have a zoom mechanism that retracts the lens and accommodates it, and as another combination, in the case of a tilt camera shake correction mechanism that tilts the lens to prevent vibration, it can be combined with the vibration isolation mechanism for an imaging device. 4-axis camera shake correction.
  • FIG. 1 is a perspective view of a configuration of a flexible substrate passing through a lower side of an imaging element in the vibration isolation mechanism for an imaging device according to an embodiment of the present invention, as viewed from the front side.
  • FIG. 2 is a perspective view of a configuration of a flexible substrate passing through a side surface of the vibration isolation mechanism, as viewed from the front side, in the vibration isolation mechanism for an imaging device according to the embodiment of the present invention.
  • FIG 3 is a cross-sectional view of a configuration of a flexible substrate passing through a lower side of an imaging element in the vibration isolation mechanism for an imaging device according to the embodiment of the present invention.
  • FIG 4 is a cross-sectional view taken along the line A-A of the structure of the flexible substrate passing through the side surface of the vibration isolation mechanism in the vibration isolation mechanism for an imaging device according to the embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an angle of a flexible substrate according to an embodiment of the present invention.
  • FIG. 6 is a schematic view of the flexible substrate shown in FIG. 5 from another angle.
  • FIG. 7 is a schematic diagram of an angle of a flexible substrate according to another embodiment of the present invention.
  • FIG. 8 is a schematic view of the flexible substrate shown in FIG. 7 from another angle.
  • FIG. 9 is an autofocus mechanism having a focus adjustment mechanism according to an embodiment of the present invention.
  • FIG. 10 is a side view of FIG. 9 .
  • 11 is a telescopic zoom mechanism having a focus adjustment mechanism according to an embodiment of the present invention.
  • FIG. 12 is a side view of FIG. 11 .
  • FIG. 13 is a portable electronic device (portable information terminal) provided with the vibration isolation mechanism for an imaging device of the present invention.
  • FIG. 1 to 4 are views showing the vibration isolation mechanism 100 for an imaging device and the vibration isolation unit 60 of the present invention.
  • FIG. 1 to 12 illustrate an imaging device and its constituent elements according to an embodiment of the present invention.
  • the imaging optical system of the anti-vibration mechanism 100 for an imaging device includes a lens 30, an autofocus mechanism 31 that drives the lens 30 and includes a focus adjustment mechanism, or a telescopic zoom mechanism 32 that drives the lens 30 and includes a focus adjustment mechanism from the object side.
  • the light flux from the subject incident along the optical axis from the lens incident surface 30 - a of the lens 30 is emitted from the lens exit surface 30 - b and imaged on the imaging surface of the imaging element 40 .
  • the anti-vibration mechanism 100 for an imaging device has a base A10-a, and the base A10-a may be a metal plate. As shown in FIG. 1, in the space comprised by the base A10-a and the case A11-a which has the space of the anti-vibration unit 60, there exists the SMA wire material attachment part B75 which the base 10-a has.
  • the anti-vibration mechanism 100 for an imaging device includes a ball member for holding the imaging element 40 on the frame assembly so as to be able to move smoothly.
  • the driving member for driving the image pickup element 40 to move is an electric actuator.
  • the electric actuator is SMA wire 70 .
  • the ball 15 is supported between the support frame 12-a on the base A10-a and the movable frame 13-a which can be supported on the support frame 12-a, and the base A10-a is also mounted with an SMA wire mounting part.
  • the SMA wire 70 which is an electric actuator member for movement of A74, and the imaging element support frame 14 on which the imaging element 40 and a signal wire for transmitting the imaging element 40 and the electric actuator are mounted are mounted and the flexible substrate A50 of the power cord to exchange signals and power from the outside.
  • the support frame 12-a may be a resin piece, and the base A10-a may be integrally formed with the support frame 12-a.
  • the anti-vibration hall sensor 71 is mounted on the flexible substrate A50, and is arranged so that the magnetic force of the position detection magnet 73 can be read and fed back.
  • the bottom surface of the base A10 - a has an opening for opening the flexible substrate A50 to the outside, and is closed by the cover plate 20 .
  • the base A10-a and the base B10-b have support member grooves 10-c of bases capable of holding the balls 15 for sliding with the support frame 12-a.
  • the support member groove 12-b of a support frame is also provided in the opposing part of the support frame 12-a.
  • a supporting member groove 12-c of the supporting frame is also formed in the opposing portion of the supporting frame 12-a and the movable frame 13-a, and a supporting member groove 13- of the movable frame is also formed in the movable frame 13-a.
  • these support member grooves set the surface precision so that the ball 15 can rotate smoothly.
  • the support member grooves 10-c of the base, the support member grooves 12-b of the support frame, the support member grooves 12-c of the support frame 12-a, and the support member grooves 13-b of the moving frame are correspondingly excavated.
  • the grooves in the moving direction also have the effect of restricting the moving direction and preventing rotation in other than the imaginary moving direction.
  • the support member grooves 10-c of the base, the support member grooves 12-b of the support frame, the support member grooves 12-c of the support frame, and the support member grooves 13-b of the moving frame can be supported and slide by using the balls 15. It slides with a low load and can reliably remove the rattling by the aforementioned pressurization.
  • the direction in which the aforementioned rattling is removed plays a role in the direction from the SMA wire 70 attached to the moving frame 13-a to the SMA wire attaching portion B75 included in the base 10-a, and determines the base A10-a and the support frame 12- a corresponds to the direction of the distance of the moving frame 13-a, and stable position detection can be performed.
  • the support frame 12 - a is movably held by the base A10 - a by the balls 15
  • the movable frame 13 - a is movably held by the support frame 12 - a by the balls 15 .
  • anti-vibration hall sensor 71 By providing the above-described anti-vibration hall sensor 71, it is possible to detect the magnetic properties of the anti-vibration magnet B75 attached to the base A10-a, and to detect the positions of the moving frame 13-a and the support frame 12-a. Therefore, it is possible to perform a more accurate measurement. Shake correction adjustment for precise control.
  • the flexible substrate A50 of the anti-vibration device 100 for the imaging element is arranged to be bent to the lower side of the imaging element 40 to reduce the reaction force of the flexible substrate A50 so as to be freely drivable in the driving directions of the two axes.
  • Each is folded at least once or more, and the wiring including the signal line and the power line is performed outside the new mechanism 100 required for the imaging device, and the configuration is like the folded portion 52 of the flexible substrate A.
  • the above-mentioned flexible substrate A50 is used to transmit all signal lines and power lines of the imaging element 40 and the anti-vibration mechanism 100 for imaging elements, and also guide and hold the lens 30, the autofocus mechanism 31 with a focus adjustment mechanism, and other devices related to the lens 30.
  • the flexible substrate A50 may be arranged on the side surface of the vibration isolation mechanism for the imaging element like the flexible substrate B51.
  • the flexible substrate A50 may be configured like the folded portion 53 of the flexible substrate B.
  • the seat B10-b and the case B11-b are constituted by members for accommodating the space of the flexible board B51.
  • the device for driving the aforementioned lens may be a telescopic zoom mechanism 32 having a focus adjustment mechanism or a tilt-hand shake correction mechanism (not shown) in which vibration is prevented by tilting the lens.
  • the above-described vibration isolation mechanism 100 for an imaging device can be used, for example, as the vibration isolation mechanism 100 for an imaging device for portable information devices 200 such as a so-called smartphone, a so-called feature phone, or a tablet device shown in FIG. 13 .

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Studio Devices (AREA)
  • Lens Barrels (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)
  • Structure And Mechanism Of Cameras (AREA)

Abstract

在包含手抖修正机构的摄像装置中，提供一种摄像装置用防振机构。一种光学系统，在具备在光轴方向移动、包含焦点调整机构的光学系统的摄像装置中，具有通过使摄像元件防振来进行手抖修正的防振机构，从物侧起依次具备摄像透镜组、防振机构、防振机构上的摄像元件，将垂直于摄像透镜组的光轴的平面作为移动平面而使所述防振机构上的摄像元件移动来进行手抖修正。

Description

摄像装置用防振机构、光学系统、相机及电子设备 技术领域
本发明涉及带手抖修正功能的摄像装置用防振机构、光学系统、相机及电子设备。
 背景技术
随着拍摄技术的飞速发展，包含透镜驱动的拍摄装置广泛应用于大量的摄像装置中。应用包含透镜驱动的摄像装置的各种便携式电子设备（例如便携式电话、平板电脑等）尤其受到消费者欢迎。
适用于通常的便携式电子设备的透镜驱动装置的驱动机构，一般多由在光轴方向对焦点进行调整的自动聚焦机构以及在垂直于光轴方向的平面进行驱动的手抖修正机构一体地构成。
这两个功能由线圈和磁钢形成，线圈固定于透镜架的外周。在向线圈施加电流时，由于电磁力的作用，线圈移动透镜架，使之沿着透镜的光轴方向移动，由此能够对焦。另外，当用户手持电子设备进行拍摄时，对于手抖所致的透镜驱动装置的抖动，能够通过向垂直于光轴的方向进行驱动来对抖动进行修正。
但是，例如作为搭载于便携式电子设备的小型的小型设备，光学总长长的中距望远等光学系统中，手抖修正机构因驱动量的长度、透镜的重量而存在在一体机构中难以薄型化、小型化的课题。
另外，由于在光轴方向进行驱动的用于调整焦点的自动聚焦机构与在垂直于光轴的平面对透镜进行驱动的透镜移动手抖修正机构为一体，因此还需要用于抑制各自具有的固有振动的机构、透镜的定心等的调整，因此，精巧组装的必要性方面、设计难度也存在增加的趋势。
进一步可以举出，由于在光轴方向进行驱动的用于调整焦点的自动聚焦机构和在垂直于光轴方向的平面进行驱动的透镜移动手抖修正机构可以使透镜镜筒三维地移动，因此落下时的冲击对策是困难的，等等。
为了解决这些课题，存在驱动摄像元件的机构，但是在支承构件使用了板簧的结构中，落下时的变形可能会导致妨碍正常的驱动，也可能会发生上部透镜单元的重量导致的倾斜、沉入。
因此，有必要提供能够解决以上课题的新的摄像装置。
现有技术文献
专利文献
专利文献1：日本国特开2006-113545号公报
专利文献2：日本国特开2006-133740号公报
专利文献3：日本国特开2006-330678号公报
专利文献4：日本国特开2006-337987号公报
专利文献5：日本国特开2016-224262号公报
专利文献6：日本国特开2017-15772号公报
专利文献7：日本国特开2019-225428号公报
专利文献8：日本国特开2020-52248号公报
 技术问题
本发明是鉴于以上的问题点而完成的，其目的在于，在具有折叠光学系统（folded optics）的摄像装置的手抖修正中，实现不使摄像装置大型化而节省空间的防振机构。
 技术解决方案
本发明的目的通过如下方式实现。此外，在以下的说明中，为了使发明的理解容易，将附图中的标号等用括号括起来进行标示，但本发明的各构成要素不限于这些标示，应该广义解释至本领域技术人员技术上能理解的范围。
一种防振机构，设置在具备在光轴方向移动、包含焦点调整机构的光学系统的摄像装置中，通过使摄像元件在垂直于光轴方向的平面移动来进行手抖修正。
该防振机构包含所述摄像元件的防振机构配置于比摄像透镜组靠近像侧处，具有能够在相对于所述光轴垂直的平面上移动；还包括用于将所述摄像元件可平滑地移动地保持在框组件的球构件；用于驱动所述摄像元件移动的驱动构件为电动致动器进行驱动；所述框组件包括可以移动的移动框，所述移动框用于在垂直于光轴方向的平面上沿两个轴移动；所述防振机构还包括用于驱动电动驱动器的集成电路和驱动时的位置检测元件；还包括用于传递摄像元件的信号的柔性基板；还包括用于驱动透镜的装置的电源供给的电路。
所述电动致动器为SMA线材。
优选的是，所述移动框上设置有用于保持所述球构件的沟。
优选的是，所述防振机构具有搭载于上部的、供给驱动透镜的装置的位置检测用信号线的电路。
优选的是，所述电动致动器的施力方向与所述SMA线材和基座互吸的方向相同。
优选的是，还包括用于放置摄像元件的基座，所述基座为金属制成的板；所述支承框为树脂件；所述基座与所述支承框一体制成。
优选的是，用于向所述电动致动器通电的柔性基板，设置在对摄像元件进行保持的框的在光轴方向上，且位于所述摄像元件的背侧，以对应于移动的各轴的方式弯折至少2次。
优选的是，用于向所述电动致动器通电的柔性基板，设置在对摄像元件进行保持的框的在与光轴方向垂直的平面，在比电动致动器靠近外侧处以对应于移动的各轴的方式弯折至少2次。
一种光学系统，包括上述防振机构。
优选的是，所述光学系统包含焦点调整机构，所述焦点调整机构是具有可使透镜倾斜的倾斜手抖修正机构的焦点调整机构的结构。
优选的是，所述光学系统包含焦点调整机构，所述焦点调整机构是具有能够多级地收缩透镜进行收纳的变焦机构的焦点调整机构。
另外，本发明包括具备上述光学系统的相机。
另外，本发明包括具备上述相机的智能手机等便携电子设备。
作为本发明的优点，本发明的摄像装置用防振机构通过利用两个框体在垂直于光轴的平面内移动摄像元件来进行手抖修正，由此，包含配置于摄像元件上的焦点调整机构和透镜的单元薄型化、小型化，省去了透镜移动手抖修正机构，由于使焦点调整机构与抖动修正机构的部件分离而抑制固有振动，因此能够使设计难度下降，由于不需要使透镜镜筒同时三维地移动，因此落下时的冲击对策的设计难度也下降，并且透镜镜筒的定心也变得容易，由于透镜不向平面方向移动，因此能使智能手机等的透镜突出开口部为最小。
驱动摄像元件的机构中，由于是支承构件不使用板簧的结构，因此能够抑制落下时的变形导致妨碍驱动的可能性、抑制上部透镜单元的重量导致的倾斜、沉入，能够减少对像面处的性能的影响。
另外，由于能够利用作为施力部件的电动致动器的SMA线材和基座进行晃动去除和施力，因此不需要用于施力的其他构件，有助于部件的大幅削减带来的小型化、组装容易化。
进一步地，焦点调整机构也可具有收缩透镜进行收纳的变焦机构，作为其他的组合，在是使透镜倾斜进行防振的倾斜手抖修正机构的情况下，能够与摄像装置用防振机构结合进行4轴手抖修正。
 有益效果
利用这些优点，能够达成在推进小型化的便携式电子设备中设置效率更优良的防振机构的目的，从而摄像图像的品质变好。
 附图说明
图1是本发明的实施方式的摄像装置用防振机构之中，从前侧观察穿过摄像元件的下侧的柔性基板的结构的立体图。
图2是本发明的实施方式的摄像装置用防振机构之中，从前侧观察穿过防振机构的侧面的柔性基板的结构的立体图。
图3是本发明的实施方式的摄像装置用防振机构之中，穿过摄像元件的下侧的柔性基板的结构的剖视图。
图4是本发明的实施方式的摄像装置用防振机构之中，穿过防振机构的侧面的柔性基板的结构的A-A向剖视图。
图5是本发明的一种实施方式的柔性基板的一个角度的示意图。
图6是图5所示的柔性基板的另一个角度的示意图。
图7是本发明的另一种实施方式的柔性基板的一个角度的示意图。
图8是图7所示的柔性基板的另一个角度的示意图。
图9是具有本发明的实施方式的焦点调整机构的自动聚焦机构。
图10为图9的侧视图。
图11是具有本发明的实施方式的焦点调整机构的伸缩变焦机构。
图12是图11的侧视图。
图13是具备本发明的摄像装置用防振机构的便携电子设备（便携信息终端）。
附图标记
10-a　　…　基座A
10-b　　…　基座B
10-c　　…　基座的支承构件沟
11-a　　…　壳体A
11-b　　…　壳体B
12-a　　…　支承框
12-b　　…　支承框的支承构件沟
12-c　　…　支承框的支承构件沟
13-a　　…　移动框
13-b　　…　移动框的支承构件沟
14　　…　摄像元件支承框
15　　…　球
20　　…　盖板
30　　…　透镜
30-a　　…　透镜入射面
30-b　　…　透镜射出面
31　　…　具有焦点调整机构的自动聚焦机构
32　　…　具有焦点调整机构的伸缩变焦机构
40　　…　摄像元件
50　　…　柔性基板A
51　　…　柔性基板B
52　　…　柔性基板A的折叠部
53　　…　柔性基板B的折叠部
60　　…　防振单元
70　　…　SMA线材
71　　…　防振霍尔传感器
73　　…　位置检测用磁铁
74　　…　SMA线材安装部A
75　　…　SMA线材安装部B
100　…　摄像装置用防振机构
200　…　便携信息设备。
 本发明的实施方式
以下，参照附图来详细说明本发明。
图1～图4是表示本发明的摄像装置用防振机构100、防振单元60的图。
图1～图12示出了本发明的实施方式的摄像装置及其构成要素。
摄像装置用防振机构100的摄像光学系统为，从物侧起由透镜30、驱动透镜30且具有焦点调整机构的自动聚焦机构31或驱动透镜30且包含焦点调整机构的伸缩变焦机构32、摄像元件40构成的光学系统。
沿着光轴从透镜30的透镜入射面30-a入射的来自被摄体的光束由透镜射出面30-b射出，在摄像元件40的摄像面上成像。
摄像装置用防振机构100具有基座A10-a，该基座A10-a可以为金属制成的板。如图1所示，在基座A10-a与具有防振单元60的空间的壳体A11-a构成的空间中，具有基座10-a具有的SMA线材安装部B75。
摄像装置用防振机构100具有用于将摄像元件40可平滑地移动地保持在框组件的球构件。用于驱动摄像元件40移动的驱动构件为电动致动器。该电动致动器是SMA线材70。
球15支承于基座A10-a上的支承框12-a和能支承于支承框12-a上的移动框13-a之间，基座A10-a上还安装有安装于SMA线材安装部A74的用于移动的电动致动器构件即SMA线材70、和摄像元件支承框14，在摄像元件支承框14上安装有摄像元件40和用于向摄像元件40及电动致动器传递信号线及电源线的柔性基板A50，进行来自外部的信号及电源的交换。
支承框12-a可以是树脂件，基座A10-a可以与支承框12-a一体制成。
另外，在柔性基板A50上安装有防振霍尔传感器71，配置为能够读取位置检测用磁铁73的磁力并进行反馈。
基座A10-a的底面具有用于使柔性基板A50通向外部的开口部、被盖板20关闭。
安装于移动框13-a的摄像元件支承框14、SMA线材70、防振霍尔传感器71、以及柔性基板A或柔性基板B，因向SMA线材70的通电引起SMA线材70进行通电导致的收缩，利用与基座A10-a具有的SMA线材安装部75的互吸而被驱动，进行防振动作。
在前述基座A10-a以及基座B10-b上具有能够对用于与支承框12-a的滑动的球15进行保持的基座的支承构件沟10-c。另外，在支承框12-a的对置部分也具有支承框的支承构件沟12-b。进一步地，在支承框12-a与移动框13-a的对置部分也形成有支承框的支承构件沟12-c，以及在移动框13-a也形成有移动框的支承构件沟13-b，这些支承构件沟以球15能够平滑地旋转的方式设定面精度。
关于前述基座的支承构件沟10-c以及支承框的支承构件沟12-b、支承框12-a的支承构件沟12-c、移动框的支承构件沟13-b，由于挖掘为对应的移动方向的沟，因此兼具移动方向限制，具有防止向假想的移动方向以外的转动等的效果。
前述基座的支承构件沟10-c以及支承框的支承构件沟12-b、支承框的支承构件沟12-c、移动框的支承构件沟13-b的支承及滑动部使用球15，能够以低负荷滑动，通过前述加压能够切实地进行晃动去除。
前述的晃动去除的方向为，从安装于移动框13-a的 SMA线材70到基座10-a具有的SMA线材安装部B75的方向发挥作用，与决定基座A10-a以及支承框12-a与移动框13-a的距离的方向一致，能够进行稳定的位置检测。
如前所述，支承框12-a利用球15移动自如地保持于基座A10-a，移动框13-a利用球15可移动地保持于支承框12-a上。
另外，从配置于移动框13-a上的SMA线材70向基座10-a具有的SMA线材安装部B75的方向施力，具有经由支承框12-a的脱落防止以及块间的晃动去除的作用，能够进行大幅的部件削減。
通过设置前述防振霍尔传感器71，能够检测安装于基座A10-a的防振磁铁B75的磁性、检测移动框13-a及支承框12-a的位置，因此，能够进行更高精度的抖动修正调整，实现准确的控制。
摄像元件用防振装置100的柔性基板A50向摄像元件40的下侧弯折地配置，以能够在2轴的驱动方向自由地驱动的方式减轻柔性基板A50的反作用力，因此，能够在2轴分别折叠至少1次以上，在摄像装置需要的新机构100的外侧进行包括信号线、电源线的布线，构成为如柔性基板A的折叠部52那样。
前述柔性基板A50用于传递摄像元件40、摄像元件用防振机构100的全部信号线、电源线，兼备导向对透镜30进行保持、具有焦点调整机构的自动聚焦机构31、透镜30相关其他装置的信号线、电源线。
前述柔性基板A50也可像柔性基板B51那样配置于摄像元件用防振机构的侧面，在该情况下，能够如柔性基板B的折叠部53那样构成，在该情况下，也能够由具有如基座B10-b、壳体B11-b那样收容柔性基板B51的空间的构件构成。
在该情况下，仍然兼具前述全部的信号线、电源线。
在本实施方式中，用于驱动前述透镜的装置可以是具有焦点调整机构的伸缩变焦机构32或倾斜透镜进行防振的倾斜手抖修正机构（未图示）。
上述的摄像装置用防振机构100例如可用作图13所示的所谓的智能手机、所谓的功能手机、或平板设备等便携信息设备200用的摄像装置用防振机构100。
以上只不过是本发明的优选实施方式，本发明的保护范围不限于上述实施方式，本领域技术人员基于本发明公开的内容所作的等同的修正或者变形全部包含在本发明权利要求的范围内。

Claims (12)

  1. 一种摄像装置用防振机构，设置在具备在光轴方向移动、包含焦点调整机构的光学系统的摄像装置中，通过使摄像元件在垂直于光轴方向的平面移动来进行手抖修正，其特征在于，
    包含所述摄像元件的防振机构配置于比摄像透镜组靠近像侧处，能够在相对于所述光轴垂直的平面上移动，
    还包括用于将所述摄像元件可平滑地移动地保持的框组件的球构件；用于驱动所述摄像元件移动的驱动构件为电动致动器；
    所述框组件包括可以移动的移动框，所述移动框用于在垂直于光轴方向的平面上沿两个轴移动；
    所述防振机构还包括用于驱动电动致动器的集成电路和驱动时的位置检测元件；
    还包括用于传递摄像元件的信号的柔性基板；
    还包括用于驱动透镜的装置的电源供给的电路；所述电动致动器为SMA线材。
  2. 根据权利要求1所述的摄像装置用防振机构，其特征在于，所述移动框上设置有用于保持所述球构件的沟。
  3. 根据权利要求1或2所述的摄像装置用防振机构，其特征在于，所述防振机构具有搭载于上部的、供给驱动透镜的装置的位置检测用信号线的电路。
  4. 根据权利要求3所述的摄像装置用防振机构，其特征在于，所述电动致动器的施力方向与所述SMA线材的安装部和基座部互吸的方向相同。
  5. 根据权利要求1或2所述的摄像装置用防振机构，其特征在于，还包括用于放置摄像元件的基座，所述基座为金属制成的板；
    所述框组件还包括支承框，所述支承框为树脂件；
    所述基座与所述支承框一体制成。
  6. 根据权利要求1或2所述的摄像装置用防振机构，其特征在于，用于向所述电动致动器通电的柔性基板，设置在对摄像元件进行保持的框的在光轴方向上，且位于所述摄像元件的背侧，以对应于移动的各轴的方式弯折至少2次。
  7. 根据权利要求1或2所述的摄像装置用防振机构，其特征在于，用于向所述电动致动器通电的柔性基板，设置在对摄像元件进行保持的框的与光轴方向垂直的平面，在比电动致动器靠近外侧处以对应于移动的各轴的方式弯折至少2次。
  8. 一种光学系统，其特征在于，所述光学系统包括权利要求1-7任一项所述的防振机构。
  9. 根据权利要求8所述的光学系统，其特征在于，所述光学系统包含焦点调整机构，所述焦点调整机构是具有可使透镜倾斜的倾斜手抖修正机构的焦点调整机构。
  10. 根据权利要求9所述的光学系统，其特征在于，所述焦点调整机构是具有能够多级地收缩透镜进行收纳的变焦机构的焦点调整机构。
  11. 一种相机，其特征在于，具备根据权利要求8～10中任一项所述的光学系统。
  12. 一种便携电子设备，其特征在于，具备根据权利要求11所述的相机。
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