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:
Feb. 12, 2019
Filed:
Feb. 15, 2016
Koninklijke Philips N.v., Eindhoven, NL;
Hans-Helmut Bechtel, Aachen, DE;
Oliver Jens Steigelmann, Aachen, DE;
Detlef Uwe Wiechert, Aachen, DE;
Matthias Heidemann, Aachen, DE;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
The invention provides a lighting device comprising a solid state light source and a ceramic body, wherein the solid state light source is configured to provide blue light source light to the ceramic body, wherein the ceramic body comprises a ceramic material configured to wavelength convert part of the blue light source light into yellow converter light, to provide white lighting device light comprising said blue light source light and said yellow converter light, said white lighting device light having a color point selected from the range of 0.18≤u'≤0.25 and 0.42≤v′≤0.54, and wherein the ceramic material comprises a (Y,Gd,Lu, Ce)(Al,Ga)Oceramic material, with 0≤x≤0.6, 0≤y≤0.5, 0≤q<1 and 0.001≤z≤0.06.