Zoom lens and imaging system using the same

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

2008-09-30

2008-09-30

Sugarman, Scott J (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S684000

Reexamination Certificate

active

11975101

ABSTRACT:
The invention relates to a high-performance, high-zoom-ratio zoom lens that can be much more reduced in terms of thickness upon received at a collapsible lens mount, and an imaging system incorporating the same. The zoom lens comprises a positive first lens group G1, a negative second lens group G2, a positive third lens group G3and a positive fourth lens group G4. Upon zooming from the wide-angle end to the telephoto end, the first G1, the second G2, the third G3and the fourth lens group G4each move such that the air spacing between the first G1and the second lens group G2grows wide, the air spacing between the second G2and the third lens group G3becomes narrow, and the air spacing between the third G3and the fourth lens group G4grows wide. The zoom lens satisfies condition (1) with respect to the transverse magnification of the second lens group G2at the wide-angle end, and condition (2) with respect to the focal distance ratio of the zoom lens system between the wide-angle end and the telephoto end.

REFERENCES:
patent: 7173769 (2007-02-01), Park
patent: 7190529 (2007-03-01), Miyajima et al.
patent: 7286304 (2007-10-01), Ohtake
patent: 7382549 (2008-06-01), Miyajima
patent: 2004-12639 (2004-01-01), None
patent: 2005-242014 (2005-09-01), None
patent: 2006-133631 (2006-05-01), None

Affiliated with

Also associated with

Rating

Zoom lens and 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 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 imaging system using the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3954328