Strobo flash light device for cameras

Details Strobo flash light device for cameras Strobo flash light device for cameras

1975-09-29

1977-03-15

Griffin, Donald A.

354147, G03B 1503, G03B 1505

Patent

active

040127494

ABSTRACT:
An accessory shoe on the camera body is provided with a light emitter such as an LED, and a foot of the strobo flash light unit to be mounted in the shoe is provided with a photodetector such as a silicon photocell to detect light emitted by the light emitter. The light emitter is connected with an electric source in the camera and a switch closed upon release of the shutter. The photodetector is connected with a switching circuit for closing a trigger circuit of the strobo flash light tube energizing circuit to discharge the strobo flash light tube upon release of the shutter.

REFERENCES:
patent: 3252394 (1966-05-01), Jakob et al.
patent: 3254580 (1966-06-01), Bider et al.
patent: 3294002 (1966-12-01), Vitkine
patent: 3354315 (1967-11-01), Preston et al.
patent: 3481660 (1969-12-01), Sheldon
patent: 3782258 (1974-01-01), Boekkool et al.
patent: 3869604 (1975-03-01), Prochnow
patent: 3953864 (1976-04-01), Iwata et al.

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