Zoom lens system

Details Zoom lens system Zoom lens system

1983-08-23

1986-04-15

Corbin, John K.

350423, G02B 1518

Patent

active

045823995

ABSTRACT:
A zoom lens system comprising a first, second, third and fourth lens groups, the first lens group being a focusing lens group having a positive focal length, the second lens group being a variator having a negative focal length, the third lens group being a compensator having a positive focal length, the fourth lens group being a relay lens comprising a positive, negative, positive and negative lenses, the zoom lens system being arranged to make the overall length of the zoom lens system short by making the overall length of the relay lens short and, at the same time, to have excellent performance.

REFERENCES:
patent: 4094586 (1978-06-01), Sato et al.
patent: 4504125 (1985-03-01), Fujii

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