Focus detecting apparatus

Details Focus detecting apparatus Focus detecting apparatus

1992-05-19

1994-07-05

Perkey, W. B.

G03B 1336, G02B 734

Patent

active

053271920

ABSTRACT:
A focus detecting apparatus, in which a pair of bundles of rays, transmitted through different portions of an exit pupil of a taking lens, are transmitted through a common focus detecting zone formed on an imaginary focal plane of the taking lens. The focus detecting apparatus includes two image reforming optical systems which reform images of the bundles of rays, incident on the focus detecting zone in different directions and transmitted therethrough, in accordance with a change in position of the exit pupil in the optical axis direction of the taking lens. A pair of line sensors are located at predetermined positions, upon which the images of the respective bundles of rays are reformed through the respective image reforming optical systems.

REFERENCES:
patent: Re31370 (1983-09-01), Mashino et al.
patent: 4047187 (1977-09-01), Mashimo et al.
patent: 4183642 (1980-01-01), Fukuoka
patent: 4246476 (1981-01-01), Stauffer
patent: 4346970 (1982-08-01), Kawabata et al.
patent: 4548495 (1985-10-01), Suzuki
patent: 4560863 (1985-12-01), Matsumura et al.
patent: 4563576 (1986-01-01), Matsumura et al.
patent: 4636624 (1987-01-01), Ishida et al.
patent: 4641022 (1987-02-01), Suzuki
patent: 4786934 (1988-11-01), Kunze et al.
patent: 4829332 (1989-05-01), Shindo
patent: 4857720 (1989-08-01), Karasaki
patent: 4859842 (1989-08-01), Suda et al.
patent: 4939357 (1990-07-01), Shindo
patent: 4949116 (1990-08-01), Karasaki et al.
patent: 5005041 (1991-04-01), Suda et al.
patent: 5017005 (1991-05-01), Shindo
patent: 5109154 (1992-04-01), Higashihara et al.
patent: 5138359 (1992-08-01), Nagano et al.
United Kingdom Search Report.
English abstracts of Japanese Patent Document Nos. 2-58012, 60-32012, 60-41013, 62-47612, 62-189415.
Partial English translation of Japanese Patent Document No. 2-58012.4
English Language Translation of the German Office Action of Sep. 23, 1993.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-799484