Zoom lens system

Details Zoom lens system Zoom lens system

1978-01-31

1980-03-11

Sacher, Paul A.

G02B 1514

Patent

active

041925777

ABSTRACT:
A zoom lens system consisting, from the object to the image side, of a positive front focusing lens group, a negative variator lens group, a negative compensator lens group and a relay lens group is provided. The variator lens group has three single lens elements, in which a negative meniscus shaped air space is formed between the second and third single lens elements. The relay lens group is divided into first and second sub-groups with a relatively wide air space formed therebetween, each of the first and second sub-groups has a pair of separate lens elements.

REFERENCES:
patent: 3160699 (1964-12-01), Yamaji
patent: 3377119 (1968-04-01), Takano
patent: 3523719 (1970-08-01), Back
patent: 4087160 (1978-05-01), Besenmatter et al.

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