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:
Apr. 20, 2010
Filed:
May. 23, 2005
Peter Schmidt, Aachen, DE;
Thomas Justel, Witten, DE;
Henning Hoppe, Kirchanschoring, DE;
Wolfgang Schnick, Gauting, DE;
Walter Mayr, Alsdorf, DE;
Peter Schmidt, Aachen, DE;
Thomas Justel, Witten, DE;
Henning Hoppe, Kirchanschoring, DE;
Wolfgang Schnick, Gauting, DE;
Walter Mayr, Alsdorf, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Philips Lumileds Lighting, US, LLC, San Jose, CA (US);
Abstract
The invention concerns an illumination system comprising a radiation source and a fluorescent material comprising at least one phosphor capable of absorbing part of the light emitted by the radiation source and emitting light of a wavelength different from that of the absorbed light; wherein said at least one phosphor is a yellow to red-emitting europium(II) activated halogeno-oxonitridosilicate of the general formula EaSiN:EuOX, wherein 1≦x≦2; 3≦y≦7; 0.001≦z≦0.09, 0.005<a≦5 0.05, 0.01<b≦0.3, EA is at least one earth alkaline metal chosen from the group of calcium, barium and strontium and X is at least one halogen chosen from the group of fluorine, chlorine, bromine and iodine. The invention is also concerned with a red to yellow-emitting europium(II)-activated halogeno-oxonitridosilicate of the general formula EaSiN:EuOX, wherein 1≦x≦2; 3≦y≦≦7; 0.001<z≦0.09, 0.005<a≦0.05, 0.01<b≦0.3, EA is at least one earth alkaline metal chosen from the group of calcium, barium and strontium and X is at least one halogen chosen from the group of fluorine, chlorine, bromine and iodine, and a method of manufacturing same.