发明名称 Electric flash device predicting quantity of overrun light according to target quantity of emission
摘要 The present invention relates to an electronic flash device capable of dimming control, particularly with the objective of enhancing the dimming precision in weak light emissions. The electronic flash device of the present invention thus predicts the quantity of overrun light after stopping of the emission based on the target quantity of emission, and performs correction to advance emission stop timing in accordance with the quantity of overrun light. Here, the rate between the target quantity of emission and the quantity of full emission by the emission means (the rate of emission) is preferably obtained so that the quantity of overrun light after stopping of the emission is predicted based on the rate of emission. In split emission, the emission stop timing is preferably corrected on each chopper emission.
申请公布号 US6571062(B2) 申请公布日期 2003.05.27
申请号 US20010770500 申请日期 2001.01.29
申请人 NIKON CORPORATION 发明人 OGASAWARA AKIRA
分类号 G03B15/05;G03B7/16;H05B41/32;(IPC1-7):G03B15/03 主分类号 G03B15/05
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