Zoom lens system

Details Zoom lens system Zoom lens system

1982-11-04

1985-03-12

Corbin, John K.

350423, G02B 1518

Patent

active

045041253

ABSTRACT:
A zoom lens system with a zoom ratio about 3 comprising a first lens group to be used for focusing, a second lens group which is a variator, a third lens group which is a compensator, and a fourth lens group which is a master lens, the second lens group being provided with a lens surface having the correcting function for chromatic aberration and a lens surface having the correcting function for spherical aberration so that chromatic aberration of spherical aberration is thereby corrected favorably.

REFERENCES:
patent: 4223981 (1980-09-01), Mizutani et al.
patent: 4380377 (1983-04-01), Sato et al.
patent: 4439017 (1984-03-01), Yamaguchi
patent: 4456341 (1984-06-01), Kato

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