Focus detecting device

Details Focus detecting device Focus detecting device

1989-04-27

1990-12-25

Adams, Russell E.

354406, 354408, G03B 1336

Patent

active

049807161

ABSTRACT:
A focus detecting device of the type in which the amount of focus adjustment is found from the amount of image deviation between object images formed on first and second sensor arrays. The magnitude of the regularity of the image pattern or the magnitude of the brightness/darkness deviation rate or the shape similarity is discriminated and light projection means is operated when the regularity is great or when the brightness/darkness deviation rate or the shape similarity is small.

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patent: 4801962 (1989-01-01), Akashi
patent: 4801963 (1989-01-01), Koyama et al.
patent: 4803507 (1989-02-01), Akashi et al.
patent: 4827301 (1989-05-01), Matsui et al.
patent: 4835561 (1989-05-01), Matsui

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