发明授权
- 专利标题: Aperture value control device utilizing frequency signal from flash unit for camera
- 专利标题(中): 光圈值控制装置利用闪光灯相机的频率信号
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申请号: US648360申请日: 1984-09-07
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公开(公告)号: US4521094A公开(公告)日: 1985-06-04
- 发明人: Satoshi Takami , Yoshifumi Kuroki
- 申请人: Satoshi Takami , Yoshifumi Kuroki
- 申请人地址: JPX Tokyo
- 专利权人: Asahi Kogaku Kogyo Kabushiki Kaisha
- 当前专利权人: Asahi Kogaku Kogyo Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX55-157743[U] 19801104
- 主分类号: G03B7/16
- IPC分类号: G03B7/16 ; G03B15/05
摘要:
The aperture value in a camera having a flash unit is controlled by a frequency signal from the flash unit. The frequency of the signal is variable in accordance with the light emission characteristics of the flash unit.
公开/授权文献
- US5892205A Heater 公开/授权日:1999-04-06
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