发明授权
- 专利标题： Photometric control device for camera
- 专利标题（中）： 相机光度控制装置
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申请号： US242067申请日： 1994-05-13
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公开(公告)号： US5526092A公开(公告)日： 1996-06-11
- 发明人: Hiroyuki Iwasaki
- 申请人： Hiroyuki Iwasaki
- 申请人地址： JPX Tokyo
- 专利权人： Nikon Corporation
- 当前专利权人： Nikon Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX4-243778 19920911; JPX4-279954 19921019
- 主分类号： G03B7/097
- IPC分类号： G03B7/097 ; G03B7/099 ; G03B7/08
摘要：
A photometric control device for a camera, comprises an electric charge-accumulation type of photoelectric conversion device 7 having plural picture elements for photoreceiving and photoelectrically converting a flux of lights from plural regions of a subject field and outputting the respective photoelectric conversion outputs as photometric signals for exposure value calculation; an accumulation time calculating device 13 for calculating an accumulation time for a next operation of the photoelectric conversion device 7 using at least one of information on the maximum value of the photometric signals from the photoelectric conversion device 7 and information on the minimum value of the photometric signals from the photoelectric conversion device 7; and a control device 14 for actuating the photoelectric conversion device 7 for the calculated accumulation time.
公开/授权文献
- US4920442A Releasable servo writing fixture connector 公开/授权日：1990-04-24
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