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CN-122018220-A - Vibration isolation mechanism for imaging device, optical system, camera, and electronic apparatus

CN122018220ACN 122018220 ACN122018220 ACN 122018220ACN-122018220-A

Abstract

Provided is an anti-vibration mechanism for an imaging device, which comprises a camera shake correction mechanism. An optical system includes an imaging device including an optical system that moves in an optical axis direction and includes a focus adjustment mechanism, and includes an anti-shake mechanism that performs hand-shake correction by anti-shake of an imaging element, the imaging element including an imaging lens group, the anti-shake mechanism, and the imaging element on the anti-shake mechanism in this order from an object side, wherein the imaging element on the anti-shake mechanism is rotated about a principal point of a lens with respect to an optical axis of the imaging lens group, and the hand-shake correction is performed.

Inventors

  • SHIKAMA KAZUO

Assignees

  • 常州市瑞泰光电有限公司

Dates

Publication Date
20260512
Application Date
20201230
Priority Date
20201221

Claims (12)

  1. 1. An image pickup apparatus including an optical system moving in an optical axis direction, the optical system including a focus adjustment mechanism, the image pickup apparatus including an image pickup device including an image pickup element, the image pickup device including a lens having a lens, and a lens, the lens having a lens, the lens being disposed in the lens, the lens being rotatable about the lens; The vibration isolation mechanism is disposed closer to the image side than the imaging lens group and is rotatable about the substantial principal point of the lens with respect to the optical axis; the vibration preventing mechanism further includes a ball member for smoothly rotatably holding the image pickup element to the frame assembly; the frame assembly comprises a rotatable moving frame, wherein the moving frame is used for rotating around the two shafts; the vibration preventing mechanism further includes a base for placing the image pickup element, the base having a supporting member groove of the base thereon; The frame assembly further comprises a support frame, wherein a first support member groove of the support frame is formed in a part, opposite to the support member groove of the base, of the support frame, and the support member groove of the base is used for holding the ball member between the support member groove of the base and the first support member groove of the support frame; The ball component is characterized in that the movable frame is provided with a supporting member groove of the movable frame, and a second supporting member groove of the supporting frame is arranged at a part of the supporting frame opposite to the supporting member groove of the movable frame; The extending directions of the supporting member groove of the base, the first supporting member groove of the supporting frame, the second supporting member groove of the supporting frame, and the supporting member groove of the moving frame are all arranged obliquely in the optical axis direction; Wherein an end of the support member groove of the base and an end of the first support member groove of the support frame, which is away from the image side, is away from the optical axis with respect to an end near the image side; the vibration preventing mechanism further includes an integrated circuit for driving the electric actuator and a position detecting element at the time of driving; the vibration preventing mechanism further includes a flexible substrate for transmitting a signal of the image pickup element; The vibration prevention mechanism further includes a circuit for power supply of the means for driving the lens.
  2. 2. The vibration isolation mechanism for an image pickup apparatus according to claim 1, wherein the electric actuator includes a vibration isolation coil; the anti-vibration coil is sandwiched between two anti-vibration magnets.
  3. 3. The vibration isolation mechanism for an image pickup apparatus according to claim 1 or 2, wherein the vibration isolation mechanism has a circuit mounted on an upper part for supplying a position detection signal line of an apparatus for driving the lens.
  4. 4. The vibration isolation mechanism for an image pickup apparatus according to claim 2, wherein a yoke is provided on the moving frame; The force application direction of the electric actuator is the same as the mutual attraction direction of the vibration-proof magnet and the magnetic yoke.
  5. 5. The vibration isolation mechanism for an image pickup apparatus according to claim 4, wherein the base is a plate made of metal; The supporting frame is a resin piece; the base is integrally formed with the support frame.
  6. 6. The vibration isolation mechanism for an image pickup apparatus according to claim 5, wherein a flexible substrate for energizing the electric actuator is provided in an optical axis direction of a frame holding the image pickup element and is positioned on a back side of the image pickup element to be bent at least 2 times in correspondence with each axis of rotation.
  7. 7. The vibration isolation mechanism for an image pickup apparatus according to claim 5, wherein the flexible substrate for energizing the electric actuator is bent at least 2 times so as to correspond to each axis of rotation on the outer side of the electric actuator in a direction of rotation about the two axes of the frame for holding the image pickup element.
  8. 8. An optical system, characterized in that the optical system comprises the vibration prevention mechanism according to any one of claims 1 to 7.
  9. 9. The optical system according to claim 8, wherein the optical system includes a focus adjustment mechanism that is a focus adjustment mechanism having a moving camera shake correction mechanism that can move the lens.
  10. 10. The optical system according to claim 9, wherein the focus adjustment mechanism is a focus adjustment mechanism having a zoom mechanism capable of retracting lenses in multiple stages.
  11. 11. A camera comprising the optical system according to any one of claims 8 to 10.
  12. 12. A portable electronic device comprising the camera of claim 11.

Description

Vibration isolation mechanism for imaging device, optical system, camera, and electronic apparatus Technical Field The invention relates to an anti-vibration mechanism for an imaging device with a camera shake correction function, an optical system, a camera, and an electronic apparatus. Background With the rapid development of photographing technology, photographing devices including lens driving are widely used in a large number of photographing devices. Various portable electronic devices (e.g., cellular phones, tablet computers, etc.) employing cameras that include lens actuation are particularly popular with consumers. A driving mechanism of a lens driving device applied to a general portable electronic device is generally integrally constituted by an autofocus mechanism for adjusting a focus in an optical axis direction and a camera shake correction mechanism for driving a lens in a plane perpendicular to the optical axis direction. These two functions are formed by a coil and a magnetic steel, the coil being fixed to the outer periphery of the lens holder. When a current is applied to the coil, the coil moves the lens holder in the optical axis direction of the lens due to the electromagnetic force, whereby focusing is enabled. When a user holds an electronic device to perform shooting, the shake of the lens driving device due to hand shake can be corrected by driving the lens driving device in a direction perpendicular to the optical axis. However, for example, as a small-sized device mounted on a portable electronic device, in an optical system such as a middle-distance telescopic lens having an overall optical length, there is a problem that it is difficult to make the integrated mechanism thin and compact due to the length of the driving amount and the weight of the lens. Further, since the autofocus mechanism for adjusting the focus, which is driven in the optical axis direction, is integrally completed with the lens movement shake correction mechanism for driving the lens in a plane perpendicular to the optical axis, adjustment of a mechanism for suppressing the natural vibration of each lens, centering of the lens, and the like are also required, and therefore, there is a tendency that the necessity of delicate assembly and the difficulty of design also increase. Further, an autofocus mechanism for adjusting a focus, which is driven in the optical axis direction, and a lens-movement shake correction mechanism, which is driven in a plane perpendicular to the optical axis direction, can move the lens barrel three-dimensionally, so that it is difficult to take measures against an impact at the time of dropping, and the like. In order to solve these problems, there is a mechanism for driving the image pickup device, but in a structure in which a plate spring is used as a support member, deformation at the time of falling may cause a problem in that normal driving is prevented, and inclination and sinking due to the weight of the upper lens unit may occur. Accordingly, it is necessary to provide a new image pickup apparatus capable of solving the above problems. Patent literature Patent document 1 Japanese patent application laid-open No. 2006-113545 Patent document 2 Japanese patent application laid-open No. 2006-133740 Patent document 3 Japanese patent application laid-open No. 2006-330678 Patent document 4 Japanese patent application laid-open No. 2006-337987 Patent document 5 Japanese patent application laid-open No. 2016-224262 Patent document 6 Japanese patent application 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 Disclosure of Invention 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 enlarging an image pickup apparatus in a camera shake correction of the image pickup apparatus having a folding optical system (folded optics). The object of the present invention is achieved as follows. In the following description, reference numerals and the like in the drawings are denoted by brackets for easy understanding of the invention, but the constituent elements of the invention are not limited to these designations and should be interpreted broadly to a range that can be understood by those skilled in the art. An image pickup apparatus including an optical system moving in an optical axis direction, the optical system including a focus adjustment mechanism, the image pickup apparatus including an image pickup device including an image pickup element, the image pickup device including a lens having two axes orthogonal to each other in a plane passing through a substantially principal point of a lens and perpendicular to the optical axis direction, the image pickup device including a lens unit, the image pickup element being rotated about the two axes t