Zoom lens system

Details Zoom lens system Zoom lens system

1983-10-04

1985-12-24

Corbin, John K.

350432, G02B 1318, G02B 1514

Patent

active

045602530

ABSTRACT:
A two group zoom lens system of an inverted telephoto type is provided wherein a first lens group of a negative refractive power consisted of a first negative component and a second positive component of a positive meniscus lens convex to the object side; and a second lens group of a positive refractive power located with a variable air space between the first and second lens groups, consisting of third and fourth positive components, a fifth negative component, and a sixth positive component; wherein the shortest focal length of the whole lens system is less than the length of the diagonal line of the image plane; and wherein the lens system fulfills the following conditions;

REFERENCES:
patent: 4159865 (1979-07-01), Kawamura et al.
patent: 4195912 (1980-04-01), Doi et al.
patent: 4400064 (1983-08-01), Ikemori et al.
patent: 4469412 (1984-09-01), Tajima et al.

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