Zoom lens having weak front lens group

Details Zoom lens having weak front lens group Zoom lens having weak front lens group

1991-11-04

1994-05-24

Arnold, Bruce Y.

Optical: systems and elements

Glare or unwanted light reduction

Barrel end or lens mount shade

359676, 359738, G02B 1514, G02B 908

Patent

active

053154401

ABSTRACT:
A zoom lens having two groups of lens components including from the object side a positive group and a negative group. The positive group includes two lens units, a weak unit, and a positive unit, while the negative group has at least one negative lens component and provides most of the magnification change during zooming.

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