Variable focal length lens system

Details Variable focal length lens system Variable focal length lens system

1976-01-15

1978-02-21

Clark, Conrad J.

350214, G02B 1514

Patent

active

040749312

ABSTRACT:
A variable focal length lens system is disclosed having wide angle capability and a small size. The system has seven lenses divided in two groups. The first group consists of three of the lenses and is movable relative to the second group, which consists of the remaining four lens.

REFERENCES:
patent: 3848969 (1974-11-01), Tajima

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