Electronic flash device with slave emission function

Details Electronic flash device with slave emission function Electronic flash device with slave emission function

1997-01-23

1998-08-11

Gellner, Michael L.

Photography

Having wireless remote control circuit

396171, 396182, 396187, G03B 700, G03B 1505, G03B 1503

Patent

active

057940827

ABSTRACT:
An electronic flash device with a slave emission function, includes a light-receiving circuit unit for starting slave emission in response to the steep leading edge of an optical signal, a light-emitting unit for irradiating illumination light for a photographing operation onto an object, an attachment member to a camera, for detecting the attachment state of the to the camera, and light emission stopping means for, when the detects that the attachment member is mounted on the camera, stopping the light emission by the light-emitting unit in response to light received by the light-receiving circuit unit.

REFERENCES:
patent: 4368966 (1983-01-01), Hagyuda
patent: 5016037 (1991-05-01), Taniguchi et al.
patent: 5384611 (1995-01-01), Tsuji et al.

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