Focus detection apparatus of camera

Details Focus detection apparatus of camera Focus detection apparatus of camera

1987-11-16

1990-12-18

Perkey, W. B.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

2502018, G03B 1336

Patent

active

049789880

ABSTRACT:
In the present apparatus, a field mask is arranged at the predetermined focal plane of a photographic lens of a camera. This mask is formed with central rectangular opening horizontally and a pair of side rectangular openings vertically extending. Light bundles passed through these rectangular openings are subjected to condensation by passing through respective condenser lenses. At a downstream, there is provided a re-imaging plate which is formed with corresponding three pairs of re-imaging lenses. All these re-imaging lenses are made into plano-convex shape having one and the same radius of curvature and molded solid with the substrate board of said re-imaging plate into a solid one piece.

REFERENCES:
patent: 4185191 (1980-01-01), Stauffer
patent: 4246476 (1981-01-01), Stauffer
patent: 4346970 (1982-08-01), Kawabata et al.
patent: 4387975 (1983-06-01), Araki
patent: 4414470 (1983-11-01), Nakaoka
patent: 4526458 (1985-07-01), Kawamura et al.
patent: 4644148 (1987-02-01), Kusaka et al.
patent: 4768052 (1988-08-01), Hamada et al.
patent: 4774539 (1988-09-01), Suda et al.
patent: 4857718 (1989-08-01), Karasaki et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1428669