Very compact wide-angle zoom lens system

Details Very compact wide-angle zoom lens system Very compact wide-angle zoom lens system

Filed on

1978-02-23

Date issued

1979-10-09

Examiner

Sacher, Paul A.

Other Related Categories

350176, G02B 1514

Type

Patent

Status

active

Patent number

041704029

Description

ABSTRACT:
A very compact wide-angle zoom lens system with favorably corrected aberrations comprising a first lens group consisting of a negative meniscus lens element and a lens component having negative refractive power, a second lens group consisting of a positive cemented lens component and a negative meniscus lens element, and a third lens group comprising at least a positive meniscus lens element and a cemented lens component. The lens system is so designed as to permit zooming by displacing said first, second and third lens groups respectively.

REFERENCES:
patent: 3771853 (1973-11-01), Nakamura
patent: 3840290 (1974-10-01), Betensky

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