Zoom lens, and electronic imaging system using the same

Details Zoom lens, and electronic imaging system using the same Zoom lens, and electronic imaging system using the same

2005-02-01

2005-02-01

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S380000, C359S689000

Reexamination Certificate

active

06850373

ABSTRACT:
The invention relates to a zoom lens that enables an optical path to be easily bent and has high optical specification performance such as a high zoom ratio, a wide-angle arrangement, a small F-number and limited aberrations. The zoom lens comprises, in order from its object side, a lens group A (G1) that comprises a negative lens, a reflecting optical element P for bending the optical path and remains fixed upon zooming, a lens group B (G2) that moves in one direction alone upon zooming from the wide-angle end to the telephoto end of the zoom lens and an aperture stop S that remains immovable with respect to position upon zooming. The zoom lens satisfies condition (1) with respect to the degree of change in the magnification of the lens group B from the wide-angle end to the telephoto end.

REFERENCES:
patent: 3825315 (1974-07-01), Altman et al.
patent: 5157550 (1992-10-01), Tsuchida et al.
patent: 5668668 (1997-09-01), Shibayama et al.
patent: 6088169 (2000-07-01), Ohno
patent: 20010051960 (2001-12-01), Kubick et al.
patent: 20030197952 (2003-10-01), Nozawa et al.
patent: 63-292106 (1988-11-01), None
patent: 3-139607 (1991-06-01), None
patent: 9-211287 (1997-08-01), None
patent: 2000-137164 (2000-05-01), None

Affiliated with

Also associated with

Rating

Zoom lens, and electronic imaging system using the same 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, and electronic imaging system using the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zoom lens, and electronic imaging system using the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3445169