Image-taking apparatus

Details Image-taking apparatus Image-taking apparatus

2007-02-20

2007-02-20

Spector, David N. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S680000, C348S240300

Reexamination Certificate

active

10874855

ABSTRACT:
A zoom lens system for forming an optical image of a subject on the image-sensing surface of an image sensor has three lens units, namely, from the object side thereof, a first lens unit having a negative optical power, a second lens unit having a positive optical power, and a third lens unit having a positive optical power. The lens units each include at least one plastic lens element. The zoom lens system as a whole includes at least one glass lens element that fulfills a prescribed conditional formula.

REFERENCES:
patent: 5745301 (1998-04-01), Betensky et al.
patent: 6781770 (2004-08-01), Chang et al.
patent: 6804064 (2004-10-01), Hirakawa
patent: 6917476 (2005-07-01), Eguchi
patent: 7042652 (2006-05-01), Nose et al.
patent: 10-311946 (1998-11-01), None
patent: 2000-267009 (2000-09-01), None
patent: 2001-343587 (2001-12-01), None
patent: 2002-072091 (2002-03-01), None
patent: 2003-050352 (2003-02-01), None
“Notification of Reason(s) for Refusal” issued by the Japanese Patent Office, mailed Mar. 14, 2006, concerning counterpart application JP 2004-069391, with an English translation thereof.

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-3820940