Optical objective

Details Optical objective Optical objective

1979-10-16

1981-06-16

Sacher, Paul A.

G02B 960

Patent

active

042734150

ABSTRACT:
An optical objective, usable for reproduction as well as for photographic and cinematographic purposes, consists of five components--two on the object side and three on the image side of a diaphragm space--constituted by a total of seven meniscus-shaped lenses all of whose surfaces are concave toward the diaphragm space, the first object-side component and the middle image-side component being negatively refracting doublets. The objective is bodily movable for focusing purposes and its two object-side components are correlatedly axially shiftable to minimize aberrations over a wide range of magnification ratios.

REFERENCES:
patent: 3817599 (1974-06-01), McCrobie
patent: 4165916 (1979-08-01), Nakamura

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