Optical lens system for taking image

Details Optical lens system for taking image Optical lens system for taking image

2007-10-24

2008-10-14

Sugarman, Scott J (Department: 2873)

Optical: systems and elements

Lens

Including a nonspherical surface

C359S795000

Reexamination Certificate

active

07436604

ABSTRACT:
An optical lens system for taking image comprises two lens elements with refractive power, from the object side to the image side: a first lens element with positive refractive power having a convex object-side surface and a concave image-side surface, the object-side surface and the image-side surface of the first lens element being aspheric; a second lens element with negative refractive power having a concave object-side surface and a concave image-side surface, the object-side surface and the image-side surface of the second lens element being aspheric, the image-side surface of the second lens element being formed with an inflection point; and an aperture stop located in front of the first lens element. A focal length of the second lens element is f2, a focal length of the optical lens system is f, and they satisfy the relation: −0.55<f/f2<−0.05 and f/EPD<3.6.

REFERENCES:
patent: 2008/0062536 (2008-03-01), Chen et al.

Affiliated with

Also associated with

Rating

Optical lens system for taking image does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical lens system for taking image, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical lens system for taking image will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3994765