Photographic camera lens system having a short total length

Details Photographic camera lens system having a short total length Photographic camera lens system having a short total length

1978-08-07

1980-11-11

Sacher, Paul A.

G02B 934

Patent

active

042329450

ABSTRACT:
A behind-stop type photographic camera lens system designed for an aperture ratio of F/2.8, a field angle of 60.degree., a short total length less than 0.37 f and favorably corrected aberrations, and comprising a first positive meniscus lens component, a second positive meniscus lens component, a third negative lens component, a fourth cemented lens component consisting of a biconvex lens element and a negative lens element.

REFERENCES:
patent: 4063802 (1977-12-01), Imai et al.

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