Image-taking apparatus

Details Image-taking apparatus Image-taking apparatus

2006-11-21

2006-11-21

Spector, David N. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S680000, C348S240300

Reexamination Certificate

active

07139129

ABSTRACT:
A zoom lens system for forming an optical image of a subject on the image-sensing surface of an image sensor includes at least, from the object side thereof, a first lens unit having a negative optical power and a second lens unit having a positive optical power, and achieves zooming by varying the distances between the individual lens units in such a way that, during zooming from the wide-angle end to the telephoto end, the distance between the first and second lens units decreases. The first lens unit consists of two plastic lens elements.

REFERENCES:
patent: 5357374 (1994-10-01), Ohno
patent: 5745301 (1998-04-01), Betensky et al.
patent: 6040949 (2000-03-01), Ohno
patent: 6229655 (2001-05-01), Kohno et al.
patent: 6532114 (2003-03-01), Kohno et al.
patent: 6781770 (2004-08-01), Chang et al.
patent: 6804064 (2004-10-01), Hirakawa
patent: 6917476 (2005-07-01), Eguchi
patent: 2002-72095 (2002-03-01), None
patent: 2003-177314 (2003-06-01), None

Affiliated with

Also associated with

Rating

Image-taking apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image-taking apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image-taking apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3656978