Copying objective lens system

Details Copying objective lens system Copying objective lens system

1974-10-25

1976-05-25

Sacher, Paul A.

G02B 964, G02B 960

Patent

active

039588661

ABSTRACT:
A large-aperture, compact, light-weight copying objective lens system comprising seven lenses arranged symmetrically on both sides of a stop positioned at the center of said lens system and satisfying the following conditions:

REFERENCES:
patent: 2830495 (1958-04-01), Koch et al.
patent: 3133983 (1964-05-01), Rickless et al.
patent: 3221601 (1965-12-01), Betensky et al.

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