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:
Aug. 30, 2005
Filed:
Feb. 18, 2003
Daniel Darcy Doxsee, Sagamore Hills, OH (US);
Anant Achyut Setlur, Niskayuna, NY (US);
Zena R. Brown, Beachwood, OH (US);
Alok Srivastava, Niskayuna, NY (US);
Holly Comanzo, Niskayuna, NY (US);
Daniel Darcy Doxsee, Sagamore Hills, OH (US);
Anant Achyut Setlur, Niskayuna, NY (US);
Zena R. Brown, Beachwood, OH (US);
Alok Srivastava, Niskayuna, NY (US);
Holly Comanzo, Niskayuna, NY (US);
GELcore, LLC, Valley View, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
A light source including a specific LED and phosphor combination capable of emitting white light for direct illumination. In one embodiment, the light source includes an LED chip emitting in the 460-470 nm range radiationally coupled to a phosphor comprising CaMg(SiO)Cl:Eu,Mn. In a second embodiment, the light source includes an LED chip emitting at about 430 nm and a phosphor comprising a blend of SrAl1O:Eu(SAE) and a second phosphor having the formula(TbARE)DO, where A is a member selected from the group consisting of Y, La, Gd, and Sm; RE is a member selected from the group consisting of Ce, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, and Lu; D is a member selected from the group consisting of Al, Ga, and In; x is in the range from 0 to about 0.5, y is in the range from about 0 to about 0.2, and z is in the range from about 4 to about 5. Both embodiments produce light having the coordinates x=0.240-0.260 and y=0.340-0.360 on the CIE chromaticity diagram.