发明授权
- 专利标题： Correct exposure annunciating device
- 专利标题（中）： 正确的曝光报警装置
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申请号： US356098申请日： 1982-03-08
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公开(公告)号： US4402589A公开(公告)日： 1983-09-06
- 发明人: Masaharu Kawamura , Hiroyuki Kataoka , Makoto Katsuma , Masanori Uchidoi
- 申请人： Masaharu Kawamura , Hiroyuki Kataoka , Makoto Katsuma , Masanori Uchidoi
- 申请人地址： JPX
- 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
- 优先权： JPX56-34372 19810310; JPX56-36264 19810312
- 主分类号： G03B17/18
- IPC分类号： G03B17/18 ; G03B15/05
摘要：
A correct exposure annunciator has an element to indicate a correct exposure. The indicating element is energized in normal flash photography to indicate correct exposure. When abnormal flash photography is carried out, the element is de-energized by a signal, representing the AE mode, and the light is turned off.
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