Exposure system for a camera

Details Exposure system for a camera Exposure system for a camera

1981-03-18

1982-10-19

Perkey, William B.

354147, 354149, G03B 716, G03B 1505

Patent

active

043547516

ABSTRACT:
An exposure system for use in a camera includes a light emitting apparatus which is capable of selectively projecting a first type of light which flashes instantaneously with a predetermined light quantity and a second type of light which flashes for a prolonged period of time with a predetermined constant light intensity, and a selecting circuit for selecting the first type of light when a target object to be photographed is located a predetermined distance away from the camera, and the second type of light when the target object is located closer to the camera than the predetermined distance.

REFERENCES:
patent: 3752046 (1973-08-01), Sato
patent: 3782258 (1974-01-01), Boekkooi et al.
patent: 3886568 (1975-05-01), Yazaki et al.
patent: 4034387 (1977-07-01), Ohtaki et al.
patent: 4174161 (1979-11-01), Mashimo et al.

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