Zoom lens

Details Zoom lens Zoom lens

1991-07-30

1992-02-11

Arnold, Bruce Y.

Optical: systems and elements

Lens

With variable magnification

359740, G02B 1515

Patent

active

050879880

ABSTRACT:
A zoom lens of simple structure is disclosed comprising, from front to rear, a first lens unit of positive refractive power, a second lens unit of positive refractive power and a third lens unit of negative refractive refractive power, wherein these three lens units each are constructed from a single block, and zooming from the wide-angle end to the telephoto end is performed by moving the first and third lens units axially toward the object side independent of each other.

REFERENCES:
patent: 4708444 (1987-11-01), Tsuji

Affiliated with

Also associated with

Rating

Zoom lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Zoom lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zoom lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-785113