Modified gauss type photographic lens

Details Modified gauss type photographic lens Modified gauss type photographic lens

1977-01-06

1979-02-13

Sacher, Paul A.

G02B 960

Patent

active

041392655

ABSTRACT:
A modified Gauss type photographic lens system comprises, in the order from the object side, a first lens component which is a positive meniscus lens having its convex surface facing the object side, a second lens component which is a positive meniscus lens having its convex surface facing the object side, a third lens component which is a negative meniscus lens having its convex surface facing the object side, a fourth lens component which is a negative meniscus lens having its concave surface facing the object side, a fifth lens component which is a positive meniscus lens cemented to the fourth lens component and havings its convex surface facing the image side, and a sixth lens component which is a biconvex lens having its more curved surface facing the image side, the lens system satisfying certain conditions peculiar to the invention.

REFERENCES:
patent: 2683396 (1954-07-01), Klemt et al.
patent: 3556643 (1971-01-01), Tibbetts et al.
patent: 3817603 (1974-06-01), Takahashi

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