Zoom lens

Details Zoom lens Zoom lens

2007-01-30

2007-01-30

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S678000

Reexamination Certificate

active

10534077

ABSTRACT:
In a zoom lens (30) comprising, from the object side to the image side, a front lens group (12) and a controllable lens group (24), the controllable lens group comprises two lens elements (25, 26) having different dispersions and being movable with respect to each other so as to perform a focusing action. One of the lens elements corrects for the dispersion of the zoom lens. Preferably, the zoom lens comprises at least one folding mirror.

REFERENCES:
patent: 4249798 (1981-02-01), Moskovich
patent: 4278330 (1981-07-01), Buchroeder
patent: 4702567 (1987-10-01), Kato et al.
patent: 4840468 (1989-06-01), Tanaka
patent: 5136431 (1992-08-01), Terasawa et al.
patent: 5745301 (1998-04-01), Betensky et al.
patent: 6339508 (2002-01-01), Nozawa et al.
patent: 6373640 (2002-04-01), Betensky et al.
patent: 6844989 (2005-01-01), Jo et al.

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-3809927