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. 13, 2001
Filed:
Mar. 26, 1999
Applicant:
Inventors:
Thomas M. Marshall, Hartsdale, NY (US);
Michael D. Pashley, Cortlandt Manor, NY (US);
Stephen Herman, Monsey, NY (US);
Jeffrey A. Shimizu, Cortlandt Manor, NY (US);
Assignee:
Philips Electronics North America Corp., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 7/00 ;
U.S. Cl.
CPC ...
F21V 7/00 ;
Abstract
A light source includes an array of LEDs in each of a plurality colors such as red, green, and blue in the entrance aperture of a tubular reflector which preferably has convex walls facing the optic axis and flares outward toward the exit aperture, and preferably has a polygonal cross section such as a square. Mixing of colors is further promoted by utilizing a large number of small LEDs with the LEDs of each color being centered on the optic axis.