Illumination system comprising a green-emitting ceramic luminescence converter

US7901592B2 · kind B2 · utility

Assignee

• KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

• Peter Josef Schmidt · Aachen, DE
• Volker Bachmann · Eriskirch, DE
• Silvia Golsch · Würselen, DE
• Wolfgang Busselt · Roetgen, DE

Key dates

• Filing date: Feb 10, 2006
• Grant date: Mar 8, 2011
• Expiry date: May 20, 2028

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/8515
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An Illumination system comprising a radiation source and a monolithic ceramic luminescence converter comprising at least one phosphor capable of absorbing a 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 an europium(II)-activated oxonitridosilicate of the general formula (Sr1-a-b-c-d-e-fCabBacMgdZneCef)Six-gGegNyOz:Eua, wherein 0.001<a<0.2, 0.0<b<1.0, 0.0<c<0.5, 0.0 <d<0.25, 0.0<e<0.25, 0.0<f<0.2, 0.0<g<1.0, 1.5<x<2.5, 1.5<y<2.5 and 1.5<z<2.5.