发明名称 |
Compact camera with automatic focal length dependent exposure adjustments |
摘要 |
A compact camera has a variable focal length photographing optical system, a multisegment photometric system that is separate from the photographing optical system, each segment outputting a brightness level, and a controller that determines an exposure value for exposing a film by using weighting coefficients to calculate a weighted average of the brightness levels outputted by the photometric system. The weighting coefficients vary according to the focal length of the photographing optical system.
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申请公布号 |
US5440369(A) |
申请公布日期 |
1995.08.08 |
申请号 |
US19930159207 |
申请日期 |
1993.11.30 |
申请人 |
ASAHI KOGAKUOGYO KABUSHIKI KAISHA |
发明人 |
TABATA, YASUSHI;NUMAKO, NORIO;KOSAKO, KOSEI |
分类号 |
G03B7/099;G03B7/20;(IPC1-7):G03B7/08 |
主分类号 |
G03B7/099 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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