Zoom lens system for use in compact camera

Details Zoom lens system for use in compact camera Zoom lens system for use in compact camera

1987-12-11

1989-04-04

Corbin, John K.

350426, G02B 1514, G02B 960

Patent

active

048180815

ABSTRACT:
An improved high-performance zoom lens system for a compact camera is disclosed. The lens employs a two-group type configuration composed of a first lens group having a positive focal length inclusive of a stop diaphragm and a second lens group having a negative focal length. To reduce the diameters of the lenses in the rear group, the back focus of the overall lens system is made greater than a predetermined value, while yet the overall lens system remains relatively short.

REFERENCES:
patent: 4720179 (1988-01-01), Ito

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