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:
Sep. 21, 2010
Filed:
Aug. 24, 2007
Applicants:
Yi Zheng, Reading, MA (US);
Bruce Bateman, Richmond, KY (US);
Matthew A. Stough, Exeter, NH (US);
Madis Raukas, Charlestown, MA (US);
Inventors:
Yi Zheng, Reading, MA (US);
Bruce Bateman, Richmond, KY (US);
Matthew A. Stough, Exeter, NH (US);
Madis Raukas, Charlestown, MA (US);
Assignee:
Osram Sylvania Inc., Danvers, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 5/16 (2006.01); H01J 63/04 (2006.01); F21V 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
White-light efficiency from a light emitting diode is enhanced by recycling inwardly penetrating light outwardly by application of a multi-layer, thin film filter between the LED die and the phosphor layer. This procedure increases the package extraction efficiency.