Zoom lens

Details Zoom lens Zoom lens

1990-07-19

1992-03-10

Dzierzynski, Paul M.

Optical: systems and elements

Lens

With variable magnification

359683, G02B 1500

Patent

active

050953877

ABSTRACT:
A zoom lens comprising, from front to rear, a first lens group of positive power, a second lens group of negative power axially movable for zooming, a third lens group axially movable for compensating for the image shift resulting from the movement of the second lens group, a fourth lens group of positive power, optical filter means and a fifth lens group of positive power, and satisfying the following condition:

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patent: 4995708 (1991-02-01), Sugiura

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