US 6,982,046 B2
Light sources with nanometer-sized VUV radiation-absorbing phosphors
Alok Mani Srivastava, Niskayuna, N.Y. (US); Anant Achyut Setlur, Niskayuna, N.Y. (US); Sergio Paulo Martins Loureiro, Saratoga Springs, N.Y. (US); Darryl Stephen Williams, Albuquerque, N. Mex. (US); and Mohan Manoharan, Niskayuna, N.Y. (US)
Assigned to General Electric Company, Niskayuna, N.Y. (US)
Filed on Oct. 01, 2003, as Appl. No. 10/674,376.
Prior Publication US 2005/0073239 A1, Apr. 07, 2005
Int. Cl. H01J 1/63 (2006.01); C09K 11/08 (2006.01); B32B 5/16 (2006.01)
U.S. Cl. 252—301.4R 24 Claims
OG exemplary drawing
 
1. A light source comprising:
a source of plasma discharge that emits electromagnetic (“EM”) radiation, a portion of which has wavelengths shorter than about 200 nm; and
a phosphor composition that comprises a plurality of particles, each of said particles comprising at least a first phosphor and at least a second phosphor, said phosphor composition is disposed such that said first phosphor absorbs substantially said portion of EM radiation having wavelengths shorter than about 200 nm, and said first phosphor emits EM radiation having wavelengths longer than about 200 nm, wherein said at least a first phosphor comprises a plurality of nanometer-sized particles disposed around a particle of said second phosphor.