Zoom lens

Details Zoom lens Zoom lens

1996-12-24

2000-04-11

Epps, Georgia

Optical: systems and elements

Lens

With variable magnification

359683, 359684, G02B 1514

Patent

active

06049431&

ABSTRACT:
A zoom lens comprises, in order from an object side to an image side, a first lens unit of positive refractive power and a second lens unit of negative refractive power, and at least one lens unit located on the image side of the second lens unit, wherein the first lens unit comprises one negative lens and at least two positive lenses, and wherein an air separation between the negative lens and the positive lens adjacent thereto is the widest in the first lens unit.

REFERENCES:
patent: 4261648 (1981-04-01), Gobl et al.
patent: 4890904 (1990-01-01), Ito
patent: 5155630 (1992-10-01), Hata
patent: 5267082 (1993-11-01), Ono et al.
patent: 5530592 (1996-06-01), Tochigi
patent: 5537255 (1996-07-01), Tochigi
patent: 5612825 (1997-03-01), Horiuchi et al.
patent: 5739961 (1998-04-01), Nakayama et al.
patent: 5751497 (1998-05-01), Usui et al.
patent: 5847882 (1998-12-01), Nakayama

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-1181148