Focus detection apparatus

Details Focus detection apparatus Focus detection apparatus

1994-02-16

1994-12-13

Adams, Russell E.

354406, G03B 1336

Patent

active

053733428

ABSTRACT:
A focus detection apparatus which can precisely perform focus detection for phototaking lenses having various exit pupil positions even when a position separated from the optical axis of a phototaking lens is set as the center of a focus detection area.
A pair of outputs are selected from those of a plurality of pairs of photoelectric transducer arrays on the basis of pupil position information associated with the exit pupil position of a phototaking lens, and position information associated with the distance between a base line and the optical axis. An arithmetic means detects a relative shift amount of a plurality of pairs of optical images on the basis of the selected pair of focus detection signals, thereby calculating a defocus amount.

REFERENCES:
patent: Re30099 (1979-09-01), Hosoe et al.
patent: Re31370 (1983-09-01), Mashimo et al.
patent: 3723003 (1973-03-01), Vockenhuber et al.
patent: 4047187 (1977-09-01), Mashimo et al.
patent: 4740676 (1988-04-01), Satoh et al.
patent: 4768052 (1988-08-01), Hamada et al.
patent: 4903065 (1990-02-01), Taniguchi et al.
patent: 4904854 (1990-02-01), Ishida et al.
patent: 4949116 (1990-08-01), Karasaki et al.
patent: 4954701 (1990-09-01), Suzuki et al.

Affiliated with

Also associated with

Rating

Focus detection apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Focus detection apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Focus detection apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1196532