发明授权
- 专利标题： Automatic exposure device and photometry device in a camera
- 专利标题（中）： 相机中的自动曝光装置和测光装置
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申请号： US702856申请日： 1996-08-26
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公开(公告)号： US5664242A公开(公告)日： 1997-09-02
- 发明人: Tadao Takagi
- 申请人： Tadao Takagi
- 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： JPX4-195499 19920722
- 主分类号： G01J1/44
- IPC分类号： G01J1/44 ; G03B7/099 ; G03B7/28 ; G03B7/08
摘要：
An automatic exposure device in a camera divides an object field into a plurality of areas and photometers them by the use of a divisional photometry element, and calculates optimum exposure from the result of the photometry. The divisional photometry element includes a photometric converting portion for photoelectrically converting incident light in each of the areas and putting out an output, and a reading portion for reading out the plurality of outputs of the photoelectric converting portion. When the number of successive outputs of a row of the areas in the readout direction which exceed a predetermined value is greater than a predetermined number, the output of that row is completely omitted in the calculation of the optimum exposure.
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