Focus detecting apparatus with virtual centering of line sensor

Details Focus detecting apparatus with virtual centering of line sensor Focus detecting apparatus with virtual centering of line sensor

1997-03-17

1999-01-05

Le, Que

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

356 11, 396 94, G01J 120

Patent

active

058566635

ABSTRACT:
A focus detecting apparatus includes a focus detecting device which forms an image through a telephotographic system, onto a line sensor, and which detects a focus state of the telephotographic system based on an output from a predetermined portion of the line sensor. An assigning device which assigns the pixels to be used in detecting the focusing state in the case where the actual center of the line sensor deviates from the reference position of the telephotographic system.

REFERENCES:
patent: 4394569 (1983-07-01), Nakamura
patent: 4485303 (1984-11-01), Suzuki
patent: 4491402 (1985-01-01), Suzuki
patent: 5266982 (1993-11-01), Soshi
patent: 5483318 (1996-01-01), Hamada et al.
patent: 5530514 (1996-06-01), Lisson et al.
patent: 5664236 (1997-09-01), Utagawa

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