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:
May. 10, 2016
Filed:
Aug. 31, 2015
Lawrence Livermore National Security, Llc., Livermore, CA (US);
GE Electric Company, Schenectady, NY (US);
Nerine J. Cherepy, Piedmont, CA (US);
Stephen A. Payne, Castro Valley, CA (US);
Zachary M. Seeley, Livermore, CA (US);
Alok M. Srivastava, Niskayuna, NY (US);
Lawrence Livermore National Security, LLC, Livermore, CA (US);
General Electric Company, Schenectady, NY (US);
Abstract
A fluorescent lamp includes a glass envelope; at least two electrodes connected to the glass envelope; mercury vapor and an inert gas within the glass envelope; and a phosphor within the glass envelope, wherein the phosphor blend includes aluminum nitride. The phosphor may be a wurtzite (hexagonal) crystalline structure AlMN phosphor, where M may be drawn from beryllium, magnesium, calcium, strontium, barium, zinc, scandium, yttrium, lanthanum, cerium, praseodymium, europium, gadolinium, terbium, ytterbium, bismuth, manganese, silicon, germanium, tin, boron, or gallium is synthesized to include dopants to control its luminescence under ultraviolet excitation. The disclosed AlMN:Mn phosphor provides bright orange-red emission, comparable in efficiency and spectrum to that of the standard orange-red phosphor used in fluorescent lighting, YO:Eu. Furthermore, it offers excellent lumen maintenance in a fluorescent lamp, and does not utilize 'critical rare earths,' minimizing sensitivity to fluctuating market prices for the rare earth elements.