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. 20, 2008
Filed:
Dec. 30, 2004
Applicants:
Yen-chun Chou, Hsinchu, TW;
Ta-kun Kung, Taipei County, TW;
Inventors:
Yen-Chun Chou, Hsinchu, TW;
Ta-Kun Kung, Taipei County, TW;
Assignee:
Prodisc Technology Inc., Taipei Hsien, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/60 (2006.01); G03B 21/56 (2006.01);
U.S. Cl.
CPC ...
Abstract
A rear-projection screen comprises an optical unit, a light-blocking layer, and an optical lens. The optical unit has a first surface and a second surface. The first surface is opposite to the second surface. The first surface has a plurality of cylindrical convexes and the second surface has a plurality of irregular protruding parts. The light-blocking layer adjoins to the second surface and has a plurality of striped light-absorbing units. The optical lens is disposed adjacent to the optical unit.