发明授权
- 专利标题: Exposure calculation device for camera
- 专利标题(中): 相机曝光计算装置
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申请号: US702857申请日: 1996-08-26
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公开(公告)号: US5687407A公开(公告)日: 1997-11-11
- 发明人: Hiroyuki Iwasaki , Tadao Takagi
- 申请人: Hiroyuki Iwasaki , 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: JPX3-018218 19910108; JPX3-108751 19910412
- 主分类号: G03B7/099
- IPC分类号: G03B7/099 ; G03B7/28 ; H04N5/235 ; G03B7/00
摘要:
An exposure calculation device for use in a camera, is provided with a light metering device for effecting light metering in each of plural areas divided in the object field and generating a light metering signal, containing information relating to the color of the object in each area. A first judgment device judges, whether the object in each area is colored or uncolored, based on the light metering signal and determining colored areas in which the object is colored and uncolored areas in which the object is uncolored; A second judgment device judges whether a predetermined uncolored area contains a white or black object, based on the light metering signals from the colored areas and those from the uncolored areas; An exposure value determining device determines the exposure value according to the light metering signals, based on the results of judgment by the first and second judgment devices.
公开/授权文献
- US5245498A Downed conductor automatic detecting device 公开/授权日:1993-09-14
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