发明授权
- 专利标题: Photographic camera
- 专利标题(中): 摄影相机
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申请号: US352191申请日: 1989-05-16
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公开(公告)号: US4985723A公开(公告)日: 1991-01-15
- 发明人: Takeshi Egawa , Masaaki Nakai , Yasuo Nakanishi , Toshihiko Ishimura , Shinichi Nishimura , Sadafusa Tsuji , Kenji Ishibashi
- 申请人: Takeshi Egawa , Masaaki Nakai , Yasuo Nakanishi , Toshihiko Ishimura , Shinichi Nishimura , Sadafusa Tsuji , Kenji Ishibashi
- 申请人地址: JPX Osaka
- 专利权人: Minolta Camera Kabushiki Kaisha
- 当前专利权人: Minolta Camera Kabushiki Kaisha
- 当前专利权人地址: JPX Osaka
- 优先权: JPX63-119848 19880516; JPX63-213192 19880516
- 主分类号: G02B7/28
- IPC分类号: G02B7/28 ; G03B7/091 ; G03B17/14 ; G03B17/20
摘要:
A camera has an exposure control unit and a focus control unit. The exposure control unit selectively provides a programmed exposure control mode, where an aperture value and a shutter speed value are automatically set based on a detection by a light metering sensor and an accordance with a preset program, and a manual exposure control mode where at least either of the aperture value and the shutter speed value is set manually. The focus control unit selectively provides an autofocus mode where a focusing is automatically effected based on a detection by a focus sensor and a manual focus mode where the focusing is effected manually. The invention is characterized by a feature which permits a forcible switchover of the focus control mode from the manual to the auto focus mode in response to a switchover of exposure control mode from the manual to the auto exposure mode.
公开/授权文献
- US4463590A Forging method 公开/授权日:1984-08-07