Standard photographic lens

Details Standard photographic lens Standard photographic lens

1978-09-08

1980-11-11

Sacher, Paul A.

G02B 936

Patent

active

042329442

ABSTRACT:
A standard photographic lens system comprising a first positive meniscus lens component, a second meniscus cemented doublet lens component, a third meniscus cemented doublet lens component and a fourth positive lens component. In said lens system, large radii of curvature are selected on the cemented surfaces of the second and third lens component respectively for facilitating to manufacture the respective elements of these two lens components, glass materials having low refractive indices are used for the respective lens elements for making it possible to manufacture said lens system at low cost, and various aberrations are favorably corrected.

REFERENCES:
patent: 3459468 (1969-08-01), Manx et al.
patent: 3495895 (1970-02-01), Schlegel
patent: 3652151 (1972-03-01), Kawabe et al.

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