Photographic lens system

Details Photographic lens system Photographic lens system

1983-10-26

1985-06-04

Corbin, John K.

350469, G02B 934, G02B 1318

Patent

active

045210845

ABSTRACT:
A photographic lens system comprising a first, second, third and fourth lens components wherein the first lens component is a positive meniscus lens, the second lens component is a biconcave lens, the third lens component is a biconvex lens, the fourth lens component is a negative meniscus lens, and the surface on the object side of the second lens component is arranged as an aspherical surface, the photographic lens system having a large aperture ratio, well corrected aberrations and short overall length.

REFERENCES:
patent: 4373786 (1983-02-01), Yamada

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