Compact lens system having a long back focal length and a large

Details Compact lens system having a long back focal length and a large Compact lens system having a long back focal length and a large

1975-02-04

1976-10-05

Sacher, Paul A.

350176, G02B 962

Patent

active

039841553

ABSTRACT:
A compact lens system comprising six components of seven lenses, having a long back focal length and a large relative aperture, favorably corrected in its aberrations, especially coma, and meeting the conditions enumerated below:

REFERENCES:
patent: 3738736 (1973-06-01), Shimizu
patent: 3743387 (1973-07-01), Nakagawa
patent: 3851953 (1974-12-01), Nakagawa

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