专利名称: Illumination System Comprising a Ceramic Luminescence Converter
公开(告)号:
公开(公告)日: 2008-08-14 00:00:00
申请(专利)号: US2008191608
申请日: 2006-04-13 00:00:00
发明(设计)人: KONINKL PHILIPS ELECTRONICS NV (NL)
(申请)专利权(人): SCHMIDT PETER J (DE)
内容: An illumination system, comprising a radiation source and a monolithic ceramic luminescence converter comprising at least one phosphor capable of absorbing a part of light emitted by the radiation source and emitting light of wavelength different from that of the absorbed light; wherein said at least one phosphor is an alkaline earth metal sulfide of general formula AE1-zS1-ySey:Az, wherein AE is at least one earth alkaline metal selected from the group of Mg, Ca, Sr and Ba, 0<=y<1 and 0.0005<=z<=0.2, activated by an activator A selected from the group of Eu(II), Ce(III), Mn(II) and Pr(III). is highly efficient, especially if a blue light emitting diode is used as a radiation source, and provides excellent thermal and spectroscopic properties. The invention is also concerned with a monolithic ceramic luminescence converter comprising at least one phosphor capable of absorbing a part of light emitted by the radiation source and emitting light of wavelength different from that of the absorbed light; wherein said at least one phosphor is an alkaline earth metal sulfide of general formula AE1-zS1-ySey:Az, wherein AE is as least one earth alkaline metal selected from the group of Mg, Ca, Sr and Ba, 0<=y<1 and 0.0005<=z<=0.2, activate by an activator A selected from the group of Eu(II), Ce(II), Mn(II) and Pr(III). 

发布日期:2008-11-27 11:17:00

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