Real image type finder system that changes an aspect ratio of a

Details Real image type finder system that changes an aspect ratio of a Real image type finder system that changes an aspect ratio of a

1993-09-03

1994-06-14

Gellner, Michael L.

Optical: systems and elements

Prism

With reflecting surface

354159, 359434, 359676, G02B 1500, G03B 1310, G03B 3700

Patent

active

053214579

ABSTRACT:
A real image type finder system comprising an objective lens system, a relay lens system and a field stop arranged at the location at which an image is to be formed by said objective lens system: and adapted to be changed into a panorama finder system by replacing the relay lens system with another relay lens system having a magnification different from that of said relay lens system and exchanging the field stop with another field stop having an aperture of a shape having an aspect ratio different from that of the aperture shape of said field stop.

REFERENCES:
patent: 4270837 (1981-06-01), Baker
patent: 4652104 (1987-03-01), Harvey
patent: 4715692 (1987-12-01), Yamada et al.
patent: 4990946 (1991-02-01), Gates
patent: 5021815 (1994-06-01), Harvey
patent: 5117247 (1992-05-01), Nakai et al.

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