Photographic lens system

Details Photographic lens system Photographic lens system

1979-11-27

1981-12-01

Sacher, Paul A.

G02B 934

Patent

active

043033130

ABSTRACT:
A photographic lens system is constituted of four lens components and four lens elements, comprising a first lens component of a meniscus positive lens with its convex surface on the object side, a second lens component of a biconcave lens, a third lens component of a biconvex lens and a fourth lens component of a meniscus negative lens with its convex on the image side. It is so arranged that the shortening of the focal length in such a manner that the image quality is kept good over a wide angle of field of view and the reducing of the telephoto ratio are well balanced so as to enable provision of a very compact photographic lens system having superior characteristics.

REFERENCES:
patent: 2446402 (1948-08-01), Aklin

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