Focus detector

Details Focus detector Focus detector

1998-09-01

1999-10-26

Perkey, W. B.

Photography

With exposure objective focusing means, focusing aid, or...

With amplification control

G03B 1336

Patent

active

059742712

ABSTRACT:
A focus detector amplifies a plurality of sets of output signals from a plurality of photoelectric transfer element arrays by the most preferable amplifying mode and focuses a focus of an optical lens system on a desired object among a plurality of objects corresponding to the photoelectric transfer element arrays by selecting a method for deciding a defocus among a nearest position priority method, a lateral direction priority method and a reliability priority method responding to a condition of the objects.

REFERENCES:
patent: 4636624 (1987-01-01), Ishida et al.
patent: 4786933 (1988-11-01), Makino
patent: 4835615 (1989-05-01), Taniguchi et al.
patent: 4859842 (1989-08-01), Suda et al.
patent: 5126777 (1992-06-01), Akashi et al.
patent: 5387930 (1995-02-01), Toh

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