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:
Sep. 14, 2010
Filed:
Jan. 30, 2008
Chien-chih Hsiung, Tantz Shiang, TW;
Keng-hui Lin, Tantz Shiang, TW;
Tsi-lung Wu, Tantz Shiang, TW;
Wen-lang Hung, Tantz Shiang, TW;
Chien-chih Hsiung, Tantz Shiang, TW;
Keng-hui Lin, Tantz Shiang, TW;
Tsi-lung Wu, Tantz Shiang, TW;
Wen-lang Hung, Tantz Shiang, TW;
Asia Optical Co., Inc., Taichung, TW;
Abstract
A liquid crystal projection system includes a light source module, a light management module, an image signal module and a projection lens. The light source module provides an illumination light beam of first polarization state. The light management module includes a color separator for separating the illumination light beam into a first color light beam and a bichromatic light beam, first and second reflectors for respectively reflecting the first color light beam and the bichromatic light beam, a phase plate for converting the polarization of the bichromatic light beam, a first PBS for receiving the first color light beam, a second PBS for receiving the bichromatic light beam, and a dichroic prism for separating the bichromatic light beam into second and third color light beams. The image signal module includes three image modulation units for transforming the polarizations of the first, second and third color light beams and modulating them into image light beams carrying corresponding image signals. The projection lens projects the first, second and third color light beams carrying corresponding image signals from the second PBS to a screen.