Single lens reflex camera with automatic diaphragm control mecha

Details Single lens reflex camera with automatic diaphragm control mecha Single lens reflex camera with automatic diaphragm control mecha

1977-12-08

1979-11-06

Gonzales, John

G03B 1912

Patent

active

041734033

ABSTRACT:
A single lens reflex camera is provided with a reflex mirror actuating mechanism and automatic diaphragm control mechanism, with each mechanism being delayed to operate at a proper speed. The diaphragm control mechanism arrests operation of a diaphragm driving means during stopping down of the diaphragm by means of an electromagnet actuated in response to the output of a diaphragm control circuit which compares set exposure factors with the brightness of an object to be photographed, while measuring the brightness through the diaphragm aperture that is being driven.

REFERENCES:
patent: 3044377 (1962-07-01), Gebele
patent: 3777637 (1973-12-01), Kuramoto et al.
patent: 3810216 (1974-05-01), Ueda
patent: 3891992 (1975-06-01), Ueda et al.
patent: 3972055 (1976-07-01), Matsuda et al.

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