Focus detector having a correlation operation processor

Details Focus detector having a correlation operation processor Focus detector having a correlation operation processor

1999-06-08

2000-05-30

Le, Que T.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

2502012, 396111, G02B 704

Patent

active

060693495

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: 4500778 (1985-02-01), Kusaka et al.
patent: 4636624 (1987-01-01), Ishida et al.
patent: 4835615 (1989-05-01), Taniguchi et al.
patent: 4859842 (1989-08-01), Suda et al.

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