Zoom Lens

Details Zoom Lens Zoom Lens

1999-06-23

2000-09-26

Sugarman, Scott J.

Optical: systems and elements

Lens

With variable magnification

354691, 354684, 354683, G02B 1514

Patent

active

061249874

ABSTRACT:
A zoom lens includes a front lens group having a negative power as a whole and a rear lens group having a positive power as a whole, and a stop included therein. For zooming, the front and rear lens groups are moved relative to each other on an optical axis. For focusing, only a rearmost positive lens of the rear lens group is moved. The zoom lens satisfies the following conditions:

REFERENCES:
patent: 5430576 (1995-07-01), Hamano
patent: 5530592 (1996-06-01), Tochigi
patent: 5818646 (1998-10-01), Hamano

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