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. 02, 2011
Filed:
Jun. 11, 2008
Alok Srivastava, Niskayuna, NY (US);
Holly Comanzo, Niskayuna, NY (US);
Venkatesan Manivannan, Fort Collins, CO (US);
Alok Srivastava, Niskayuna, NY (US);
Holly Comanzo, Niskayuna, NY (US);
Venkatesan Manivannan, Fort Collins, CO (US);
General Electric Company, Schenectady, NY (US);
Abstract
A fluorescent lamp including a phosphor layer including (YGd)AlO:EU, wherein 0.4≦x≦0.7 and 0≦y≦0.1, and at least one of each of a green and blue emitting phosphor. The resulting lamp will exhibit a white light having a color rendering index of preferably 90 or higher with a correlated color temperature of from 2500 to 10000 Kelvin. The use of (YGd)AlO:Euin phosphor blends of lamps results in high CRI light sources with increased stability and acceptable lumen maintenance over, the course of the lamp life.