The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 2011
Filed:
Nov. 02, 2009
Sung-nan Chen, Hsinchu, TW;
Long-sheng Liao, Hsinchu, TW;
Ya-ling Hsu, Hsinchu, TW;
Chao-shun Chen, Hsinchu, TW;
Sung-Nan Chen, Hsinchu, TW;
Long-Sheng Liao, Hsinchu, TW;
Ya-Ling Hsu, Hsinchu, TW;
Chao-Shun Chen, Hsinchu, TW;
Young Optics Inc., Hsinchu, TW;
Abstract
A lens adapted to image a first image plane at a reduced side onto a magnified side is provided. The lens has an optical axis. The lens includes a lens group and a concave reflective mirror. The lens group is disposed in the light path between the reduced side and the magnified side. The concave reflective mirror is disposed in the light path between the lens group and the magnified side. The offset of the first image plane with respect to the optical axis is greater than 100%. The throw ratio of the lens is less than 0.3.