Zoom lens

Details Zoom lens Zoom lens

1985-02-28

1986-12-02

Corbin, John K.

350423, G02B 1500

Patent

active

046260765

ABSTRACT:
A zoom lens having at least 4 components of which the 1st component counting from the front is of positive refractive power and the 2nd and 3rd components are of negative refractive power, wherein the aforesaid 1st, 2nd and 3rd components are made movable for moving in respective loci, which are different from each other, to effect zooming.

REFERENCES:
patent: 4240700 (1980-12-01), Ogawa et al.
patent: 4380376 (1983-04-01), Suda et al.

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