发明名称 |
Electronic flash control device employing a plurality of control signals |
摘要 |
An electronic flash control device makes sure that the emission of light of an electronic flash is not impaired by a noise component signal prior to generation of a suitable quantity of light by the flash. A trigger signal is applied by the control device to allow the flash to emit light. An enable signal is supplied to a quenching circuit a predetermined time after the noise of the trigger signal has been produced. When the quantity of light from an object to be photographed by the camera reaches a certain value and the enable signal occurs, the quench circuit suppresses the emission of light by the electronic flash.
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申请公布号 |
US5138361(A) |
申请公布日期 |
1992.08.11 |
申请号 |
US19910712998 |
申请日期 |
1991.06.10 |
申请人 |
ASAHI KOGAKU KOGYO K.K. |
发明人 |
IWAMOTO, SHIGERU;HASHIMOTO, ISAMU |
分类号 |
G03B15/05;H05B41/32 |
主分类号 |
G03B15/05 |
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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