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:
Mar. 25, 2008
Filed:
Sep. 26, 2003
Applicants:
Reinhold Wimberger-friedl, Eindhoven, NL;
Hugo Johan Cornelissen, Eindhoven, NL;
Johan Gerrit DE Bruin, Eindhoven, NL;
Inventors:
Reinhold Wimberger-Friedl, Eindhoven, NL;
Hugo Johan Cornelissen, Eindhoven, NL;
Johan Gerrit De Bruin, Eindhoven, NL;
Assignee:
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 27/30 (2006.01); G02B 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A collimator for use in an optical device, such as a display device, includes a multi-layered sheet of at least five alternating light transmitting and light impervious layers. A collimation angle of a few degrees is obtainable using the collimator. The collimator may be produced by co-extruding or injection molding.