Patent · US Active

Optical imaging lens system

US8310768B2 · kind B2 · utility

71Cited by

2References

21Claims

0Family size

Assignee

LARGAN PRECISION CO., LTD. · TW

Inventors

Ming-Ching Lin · Taichung, TW
Hsin-Hsuan Huang · Taichung, TW

Key dates

Filing date	Nov 22, 2010
Grant date	Nov 13, 2012
Priority date	—
Expiry date	Mar 3, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG02B13/0045
WIPO fieldOptics
WIPO sectorInstruments

Abstract

This invention provides an optical imaging lens system including five lens elements with refractive power, in order from an object side toward an 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 having a convex object-side surface and a concave image-side surface, a fourth lens element having both surfaces being aspheric, a fifth lens element having a concave image-side surface with at least one inflection point formed thereon. By such arrangement, the total track length and the sensitivity of the optical imaging lens system can be reduced while achieving high image resolution.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.