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:
Dec. 31, 2007
Filed:
Dec. 19, 2005
Applicant:
Shinichi Niwa, Fukuroi, JP;
Inventor:
Shinichi Niwa, Fukuroi, JP;
Assignee:
Minebea Co., Ltd., Kitasaku-gun, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G92B 5/22 (2005.12);
U.S. Cl.
CPC ...
Abstract
A color wheel includes lens structures, which are formed on a surface of a substrate opposite to a surface having filter sectors, and which have curved surfaces formed at their abutting ends and positioned along a boundary between adjacent filter sectors. Light impinging on an area of the substrate corresponding to the boundary is deflected due to one of the curved surfaces so as to be surely guided into one of the adjacent filter sectors and to be duly dispersed into a predetermined color, whereby light can be efficiently utilized.