发明名称 |
Exposure propriety indicating device for flash-photography |
摘要 |
An exposure propriety indicating device for flash-photography constructed with a circuit comprising a film sensitivity signal generating circuit, an aperture value signal generating circuit, a comparison circuit for comparing signals generated by the two generating circuits, and an indicator circuit for indicating the result of such comparison.
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申请公布号 |
US4096498(A) |
申请公布日期 |
1978.06.20 |
申请号 |
US19760672065 |
申请日期 |
1976.03.30 |
申请人 |
NIPPON KOGAKU K.K. |
发明人 |
OKUNO, KENO;OSUMI, MASUMI |
分类号 |
G03B7/16;G03B15/05;G03B17/18;G03B17/20;(IPC1-7):G03B15/02 |
主分类号 |
G03B7/16 |
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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