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:
Jul. 20, 2010
Filed:
May. 09, 2005
Applicants:
Wan-chiang Wang, Hsinchu, TW;
Che-shine Tsai, Hsinchu, TW;
Hao-wei Pan, Hsinchu, TW;
Inventors:
Assignee:
Young Opics Inc., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A projector apparatus includes a light source for producing light beams, a micromirror device including an array of micromirrors for modulating and reflecting the light beams into image light beams, and a projection lens unit for magnifying and projecting the image light beams. The projection lens unit includes an optical lens disposed adjacent to the micromirror device, and a light shielding plate mounted on the optical lens or between the micromirror device and the optical lens for covering bias light so as to prevent formation of a ghost image in the projected image.