Automatic focus adjustment apparatus

Patent

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Details

G03B 310

Patent

active

046680683

ABSTRACT:
An automatic focus adjustment apparatus adapted for use with cameras includes an automatic focusing means for shifting an imaging objective for automatic focusing in response to an output signal from a pair of photo-detectors which receives light radiated from a light emitting element and then reflected from a subject to be photographed. The light energy from the light emitting element is controlled by a radiance control means in such a manner that it radiates a diminished energy for a period of time and then restores its light energy.

REFERENCES:
patent: 4613225 (1986-09-01), Kawabata

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