Imaging lens

Details Imaging lens Imaging lens

2005-12-20

2005-12-20

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

Including a nonspherical surface

C359S785000

Reexamination Certificate

active

06977779

ABSTRACT:
An imaging lens for an image pickup device is formed of only three lens components of positive, negative, and positive refractive power, in order from the object side. A diaphragm stop is positioned on the object side of the lens component nearest the object side. Six lens component lens surfaces are aspheric. The lens component nearest the object side is biconvex with regard to the central areas of its two lens surfaces. The image-side surface of the lens component nearest the image side has a concave central area surrounded by a convex surface area. The middle lens component has one lens surface with a concave central area and one lens surface with a convex central area. The Abbe number of the central lens element and the ratio of the focal length of the imaging lens divided by the focal length of the object-side lens component satisfy specified conditions.

REFERENCES:
patent: 6441971 (2002-08-01), Ning
patent: 6728047 (2004-04-01), Sato et al.
patent: 6747810 (2004-06-01), Sato
patent: 2002-517773 (2002-06-01), None
patent: 2002-221659 (2002-08-01), None

Affiliated with

Also associated with

Rating

Imaging 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 Imaging lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3500690