Photographic objective

Details Photographic objective Photographic objective

1984-02-22

1987-11-24

Arnold, Bruce Y.

350255, 350415, 350428, 350450, G02B 1522, G02B 934, G02B 914, G02B 910

Patent

active

047084448

ABSTRACT:
In the disclosed photographic objective, a focusing lens group is arranged on the image side of a stop. To focus, all or part of the lens group, or the stop and all or part of the lens group, are moved to maintain an exit pupil at a substantially constant position.

REFERENCES:
patent: 4256381 (1981-03-01), Kreitzer
patent: 4390252 (1983-06-01), Mori
patent: 4426137 (1984-01-01), Mori
patent: 4492437 (1985-01-01), Masumoto et al.

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