Flash photographing system

Details Flash photographing system Flash photographing system

1986-12-30

1987-10-06

Perkey, W. B.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Plural load device systems

315241P, G03B 1505

Patent

active

046979077

ABSTRACT:
In a flash photographing system including a camera having a light output control circuit for producing a stop of light emission signal when a light intensity of an illumination light reflected by an object reaches a predetermined level and a start circuit to start activation of the light output control circuit in response to a start of light emission signal, and a flash device electrically connected to the camera and having a flash bulb for emitting the illumination light, the flash device comprises detection means for detecting electrical connection with the camera, start of light emission signal generating means responsive to the detection means for supplying the start of light emission signal to the start circuit of the camera in synchronism with the emission of the illumination light by the flash bulb, and light emission stop means for stopping the emission of the illumination light by the flash bulb in response to the stop of light emission signal from the light output control circuit of the camera.

REFERENCES:
patent: 4189219 (1980-02-01), Hasegawa et al.
patent: 4363542 (1982-12-01), Kondo et al.
patent: 4436396 (1984-03-01), Maida

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