Zoom lens apparatus

Details Zoom lens apparatus Zoom lens apparatus

1999-05-07

2000-08-15

Epps, Georgia

Optical: systems and elements

Lens

With variable magnification

359676, 359689, 359699, G02B 1514

Patent

active

061045519

ABSTRACT:
A zoom lens apparatus moves the first lens group and the second lens group by rotating a zoom cam cylinder with cam grooves formed thereon. A plurality of forcing members uniformly forces first cam followers, which are provided on a lens supporting frame for the first lens group, against one sides of the cam grooves. Likewise, the plurality of forcing members uniformly forces second cam followers, which are provided on a lens supporting frame for the second lens group, against the other sides of the cam grooves.

REFERENCES:
patent: 5787767 (1998-08-01), De Bernardi
patent: 5907439 (1999-05-01), Matsui

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