Small sized zoom lens

Details Small sized zoom lens Small sized zoom lens

1984-08-23

1989-03-28

Corbin, John K.

350423, G02B 1514

Patent

active

048158305

ABSTRACT:
A zoom lens including a first lens unit of positive power and a second lens unit of negative power with the axial separation therebetween varies to bring about zooming. The first lens unit includes at least one positive lens and at least one negative lens and the second lens unit consists of a forwardly concave negative meniscus lens, thereby making the lens system small.

REFERENCES:
patent: 3614207 (1971-10-01), Basista
patent: 4303313 (1981-12-01), Imai et al.
patent: 4659186 (1987-04-01), Sato et al.

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