Compact retrofocus-type wide-angle photographic lens system

Details Compact retrofocus-type wide-angle photographic lens system Compact retrofocus-type wide-angle photographic lens system

1974-07-12

1976-11-16

Corbin, John K.

G02B 964

Patent

active

039920860

ABSTRACT:
A compact retrofocus-type wide-angle photographic lens system with a long back focal length comprising seven lens components and satisfying the following conditions:

REFERENCES:
patent: 3635546 (1972-01-01), Mori
patent: 3645605 (1972-02-01), Nakagawa
patent: 3884556 (1975-05-01), Nakagawa

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