Zoom lens

Details Zoom lens Zoom lens

1988-07-08

1989-03-07

Corbin, John K.

350423, 350432, G02B 15177, G02B 1500, G02B 1318

Patent

active

048100722

ABSTRACT:
A zoom lens comprising, from front to rear, a first lens unit of negative power, a second lens unit of positive power and a third lens unit, the first and second lens units being axially movable for zooming, and the zoom lens satisfying the following conditions:

REFERENCES:
patent: 4509833 (1985-04-01), Ikemori
patent: 4571031 (1986-02-01), Kato

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