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:
May. 05, 2009
Filed:
Sep. 11, 2008
Sung-nan Chen, Hsinchu, TW;
Sung-Nan Chen, Hsinchu, TW;
Young Optics Inc., Hsinchu, TW;
Abstract
A polarization conversion system includes at least one beam splitting and combining unit having a polarization beam splitting element and a dichroic element, a dichroic unit, a polarization beam splitting unit, a first half wave plate (HWP) and a second half wave plate. The polarization beam splitting element reflects a first portion beam of the first light beam and allows a second portion beam of the first light beam to pass through. The dichroic unit reflects the first portion beam. The polarization beam splitting unit reflects a third portion beam of a second light beam and allows a fourth portion beam of the second light beam to pass through, and the dichroic element reflects the third portion beam. In addition, the first HWP is disposed between the beam splitting and combining unit and the polarization beam splitting unit, while the second HWP is disposed between the beam splitting and combining unit and the dichroic unit.