Symmetrical 1:1 photographic objective lens

Details Symmetrical 1:1 photographic objective lens Symmetrical 1:1 photographic objective lens

1980-04-15

1982-03-16

Corbin, John K.

G02B 962

Patent

active

043198090

ABSTRACT:
An objective lens system of the Double Gauss type wherein negative lens elements are symmetrically disposed on both sides adjacent the stop, each negative element being a cemented doublet comprising a double convex negative and a positive lens element. A cemented doublet positive lens component is next positioned at the outside of each of the negative elements and a single positive lens is positioned at the outside of each of the inner positive lens components.

REFERENCES:
patent: 2734424 (1956-02-01), Bertele
patent: 3700312 (1972-10-01), Bertele
patent: 3865471 (1975-02-01), McCrobie
patent: 3871749 (1975-03-01), Harada
patent: 4013349 (1977-03-01), Bertele et al.

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