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. 14, 2012
Filed:
Nov. 17, 2008
Dirk Berben, Bobingen, DE;
Tim Fiedler, Munich, DE;
Renate Hirrle, Augsburg, DE;
Guenter Huber, Schrobenhausen, DE;
Frank Jermann, Koenigsbrunn, DE;
Martin Zachau, Geltendorf, DE;
Dirk Berben, Bobingen, DE;
Tim Fiedler, Munich, DE;
Renate Hirrle, Augsburg, DE;
Guenter Huber, Schrobenhausen, DE;
Frank Jermann, Koenigsbrunn, DE;
Martin Zachau, Geltendorf, DE;
OSRAM AG, Munich, DE;
Abstract
A conversion LED is provided. The conversion LED may include a primary light source which emits in the short-wave radiation range below 420 nm, and a luminophore placed in front of it consisting of the BAM system as a host lattice for at least partial conversion of the light source's radiation into longer-wave radiation, wherein the BAM luminophore is applied as a thin layer having a thickness of at most 50 μm directly on the surface of the light source, the BAM luminophore having the general stoichiometry (M1−r Mgr)O*k(Al2O3), where r=0.4 to 0.6 and M=EAeEu1−e, with EA=Ba, Sr, Ca, and e=0.52 to 0.8, and k=1.5 to 4.5.