Optical lens system for taking image

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

2009-02-22

2010-11-02

Collins, Darryl J (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S708000, C359S714000, C359S766000

Reexamination Certificate

active

07826151

ABSTRACT:
An optical lens system for taking image comprises, in order from the object side to the image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power; a third lens element with positive refractive power having a concave object-side surface and a convex image-side surface; a fourth lens element with positive refractive power; a fifth lens element with refractive power; and an aperture stop located between an object to be photographed and the second lens element. In the optical lens system for taking image, the number of the lens elements with refractive power being limited to five. Such lens arrangements can effectively reduce the volume of the optical lens system, reduce the sensitivity of the optical lens system and obtain higher resolution.

REFERENCES:
patent: 3023672 (1962-03-01), Sandback

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