发明授权
- 专利标题: Camera photometry system
- 专利标题(中): 相机测光系统
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申请号: US384355申请日: 1995-02-02
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公开(公告)号: US5497215A公开(公告)日: 1996-03-05
- 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: JPX5-095203 19930330
- 主分类号: G01J1/02
- IPC分类号: G01J1/02 ; G03B7/099 ; G03B7/08
摘要:
The invention provides a camera photometry system that uses accumulation-type photometry elements to output photometric information related to the brightness of the subject field. The invention eliminates the smear phenomenon caused by the effects of the brightest parts of the subject field while also appropriately measuring the light of the major subject in the subject field. The invention is a camera photometry system equipped with a photometry mechanism which measures light using accumulation-type photoelectric elements by dividing the subject field into multiple photometry regions, and which outputs photometry information related to the brightness of the subject field, with the photometry element being equipped with a photoelectric mechanism for converting light into electricity which is stored and a transmission mechanism for transmitting the electric charge which is stored by the photoelectric mechanism. The system is configured so that the transmission mechanism transmits the electric charge from the top to the bottom with respect to the vertical direction of the subject field.
公开/授权文献
- US4975650A Phase detector 公开/授权日:1990-12-04
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