发明名称 |
Electronic flash lighting device for camera |
摘要 |
An electronic flash lighting device for a camera comprises a first light measuring device for measuring the brightness of a field to be photographed, prior to flash emission, and a second light measuring device for measuring the brightness of a plurality of divided areas of the field during flash emission and producing a corresponding plurality of signals. These signals are weighted in accordance with the measurement performed by the first light measuring device, and the flash emission is stopped in accordance with the weighted signals.
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申请公布号 |
US5006879(A) |
申请公布日期 |
1991.04.09 |
申请号 |
US19890410659 |
申请日期 |
1989.09.21 |
申请人 |
NIKON CORPORATION |
发明人 |
TAKAGI, TADAO;SATO, TOSHIHIRO |
分类号 |
G03B7/099;G03B7/16;G03B7/28;G03B15/05 |
主分类号 |
G03B7/099 |
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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