Zoom lens

Details Zoom lens Zoom lens

1993-09-03

1996-06-25

Sugarman, Scott J.

Optical: systems and elements

Lens

With variable magnification

359554, 359686, G02B 1514, G02B 2764

Patent

active

055305938

ABSTRACT:
A zoom lens includes a first lens group having positive refractive power, a second lens group having positive refractive power, and a third lens group having negative refractive power. In zooming from the wide-angle end to the telephoto end, the distance between the first and second lens groups is increased and the distance between the second and third lens groups is decreased. The second lens group includes a front group having low refractive power and a rear group having positive refractive power. The rear group is movable in a direction almost perpendicular to the optical axis.

REFERENCES:
patent: 4480467 (1989-06-01), Takada et al.
patent: 4927250 (1990-05-01), Suda
patent: 5000549 (1991-03-01), Yamazaki
patent: 5039211 (1991-08-01), Maruyama
patent: 5121978 (1992-06-01), Maruyama
Patent Abstracts of Japan, vol. 14, No. 317 (P-1073), 9 Jul. 1990 (JP-A-21 03 014).

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-2194122