Tessar form photographic lens

Details Tessar form photographic lens Tessar form photographic lens

1978-10-18

1980-07-22

Clark, Conrad J.

G02B 920

Patent

active

042136741

ABSTRACT:
The present invention relates to a Tessar form photographic lens consisting of four lenses in three components. The first component consists of a positive meniscus lens having a convex surface at the object side, the second component consists of a bi-concave lens, the third component consists of a positive lens composed of a negative lens and a positive lens cemented on each other. A diaphragm is arranged in front of the image facing surface of the third component. The diameter of the first component is larger than those of the second and the third component, while the second component is in edge contact with the third component.

REFERENCES:
patent: 3864028 (1975-02-01), Paukert
patent: 3876292 (1975-04-01), Velesik
patent: 3895857 (1975-07-01), Imai

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