发明授权
- 专利标题: Lens driving apparatus for a camera
- 专利标题(中): 镜头驱动装置
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申请号: US431644申请日: 1989-11-03
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公开(公告)号: US4972215A公开(公告)日: 1990-11-20
- 发明人: Hiroshi Kitamura , Yoshiaki Kobayashi
- 申请人: Hiroshi Kitamura , Yoshiaki Kobayashi
- 申请人地址: JPX Tokyo
- 专利权人: Olympus Optical Co., Ltd.
- 当前专利权人: Olympus Optical Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX63-285517 19881111
- 主分类号: G02B7/04
- IPC分类号: G02B7/04 ; G02B7/08 ; G02B7/10 ; G02B7/28 ; G03B3/10 ; G03B13/34
摘要:
A lens driving apparatus for use in a camera, which adjusts the focus or the angle of view of a lens by means of a motor driven in accordance with the amount of rotation and the rotational angle of a rotational operation member provided on a lens body or a camera body, comprises a first detector for detecting the operational direction and the amount of operation of the rotational operation member and generates an operational direction signal and an amount-of-operation pulse signal, a second detector for detecting the actual amount of driving of the lens and generating a drive pulse signal, a motor driver for rotating the motor in a direction according to the operational direction signal until the difference between the count value of an amount-of-operation pulse and an amount-of-driving pulse becomes O, and a velocity controller for setting a high speed to the motor driver when the above difference is large and setting a low speed to the motor drive when the difference is small.
公开/授权文献
- USD278475S Swimwear 公开/授权日:1985-04-23
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