发明授权
- 专利标题: Exposure control system
- 专利标题(中): 曝光控制系统
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申请号: US450745申请日: 1982-12-17
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公开(公告)号: US4420237A公开(公告)日: 1983-12-13
- 发明人: Yukio Ogawa , Isao Harigaya , Tateo Yamada , Michio Hirohata
- 申请人: Yukio Ogawa , Isao Harigaya , Tateo Yamada , Michio Hirohata
- 申请人地址: JPX Tokyo
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX54-15880 19790213; JPX54-15881 19790213
- 主分类号: G03B7/08
- IPC分类号: G03B7/08 ; G03B7/081 ; G03B7/093
摘要:
A camera having an electromagnetically driven shutter provided with a counter capable upon counting a present number producing a signal. Each time the shutter is closed, the counted value is changed, while the period of actuation of the shutter is controlled to effect a predetermined fraction of an exposure, so that a continuous sequence of shots equal in number to that preset in the counter are taken automatically.