Compact wide-angle zoom lens

Details Compact wide-angle zoom lens Compact wide-angle zoom lens

1986-04-17

1988-02-23

Corbin, John K.

350423, G02B 1516, G02B 964

Patent

active

047266651

ABSTRACT:
A compact wide-angle zoom lens comprising, in order from the object side, a variator that consists of a first lens component having a negative focal length and a second lens component having a positive focal length, and a single-element fixed third lens component (relay lens system) that is positioned subsequent to the variator for increasing its focal length. The first lens component has a negative-positive lens unit arrangement. The second lens component has a positive-negative-positive lens unit arrangement. The first and second lens component are mechanically moved so as to provide a variable focal length and maintain a constant focal position. The following conditions are satisfied: ##EQU1## where f.sub.1 : the focal length of the first lens component;

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