Zoom lens

Details Zoom lens Zoom lens

2007-05-29

2007-05-29

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S761000, C359S787000

Reexamination Certificate

active

11113184

ABSTRACT:
A zoom lens formed in a small size adaptable to a thin and portable device, having three lens groups, including, from the object plane to the image forming plane: a first lens group with a negative power, a second lens group with a positive power and a third lens group with a positive power. By controlling the ratio of the focal length of the second lens group and the focal length of the tele-photo end, image distortion may be controlled, and the total length of the lens may be reduced to shrink the size of the lens. Hence production costs may be reduced, which is important to mass production.

REFERENCES:
patent: 5550679 (1996-08-01), Sugawara
patent: 6362924 (2002-03-01), Ohno
patent: 6757111 (2004-06-01), Takeuchi et al.
patent: 2004/0012859 (2004-01-01), Minefuji
patent: 2004/0136705 (2004-07-01), Suzuki

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-3761842