Large-aperture wide-angle zoom lens system

Details Large-aperture wide-angle zoom lens system Large-aperture wide-angle zoom lens system

1984-01-16

1986-08-05

Corbin, John K.

350458, G02B 1304, G02B 1514

Patent

active

046039481

ABSTRACT:
A large-aperture wide-angle zoom lens system designed for a field angle of 73.degree. to 48.degree. and F/2.8, and having favorably corrected aberrations. Said zoom lens system comprises a front diverging lens group and a rear converging lens group, and is designed for performing zooming by varying an airspace reserved between both the lens groups, said rear converging lens group comprising a first subgroup comprising two positive lens components, a second subgroup comprising two negative lens components and a third subgroup comprising two positive lens components.

REFERENCES:
patent: 4147410 (1979-04-01), Shimomura et al.
patent: 4315669 (1982-02-01), Fujii
patent: 4484799 (1984-11-01), Doi et al.

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