Koninklijke Philips Corporation N.v.

Philips Lumileds Lighting Company LLC

Hans-Dieter Bausen

Peter Josef Schmidt

Walter Mayr

Gerd O Mueller

Regina B Mueller-Mach

Wolfgang Schnick

Thomas Jüstel

Henning Höppe

Jörg Meyer

Jorge Meyer

The invention concerns an illumination system for generation of colored, especially amber or red light, comprising a radiation source and a fluorescent material 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 a amber to red emitting a rare earth metal-activated oxonitridoalumosilicate of general formula (CaSrBaMg)(AlB)SiNO:Re, wherein 0&#x2266;x&#x2266;1, 0&#x2266;y&#x2266;1, 0&#x2266;z&#x2266;1, 0&#x2266;a&#x2266;1, 0&#x3c;b&#x2266;1 and 0.002&#x2266;n&#x2266;0.2 and RE is selected from europium(II) and cerium(III).

Illumination system comprising a radiation source and a fluorescent material

The invention concerns an illumination system for generation of colored, especially amber or red light, comprising a radiation source and a fluorescent material 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 a amber to red emitting a rare earth metal-activated oxonitridoalumosilicate of general formula (CaSrBaMg)(AlB)SiNO:RE, wherein 0&#x2266;x&#x2266;1, 0&#x2266;y&#x2266;1, 0&#x2266;z&#x2266;1, 0&#x2266;a&#x2266;1, 0&#x3c;b&#x2266;1 and 0.002&#x2266;n&#x2266;0.2 and RE is selected from europium(II) and cerium(III).

The invention concerns a light emitting device comprising a light emitting structure capable of emitting primary light of a wavelength less then 480 nm and a luminescent screen comprising a phosphor of general formula (SrCaBaMgZn)SiNO:Eu, wherein 0.002&#x2266;a&#x2266;0.2, 0.0&#x2266;b&#x2266;0.25, 0.0&#x2266;c&#x2266;0.25, 0.0&#x2266;d&#x2266;0.25, 0.0&#x2266;e&#x2266;0.25, 1.5&#x2266;x&#x2266;2.5, 1.5&#x2266;y&#x2266;2.5 and 1.5&#x2266;z&#x2266;2.5. The invention also concerns a luminescent screen comprising a phosphor of general formula (SrCaBaMgZn)SiNO:Eu, wherein 0.002&#x2266;a&#x2266;0.2, 0.0&#x2266;b&#x2266;0.25, 0.0&#x2266;c&#x2266;0.25, 0.0&#x2266;d&#x2266;0.25, 0.0&#x2266;e&#x2266;0.25, 1.5&#x2266;x&#x2266;2.5, 1.5&#x2266;y&#x2266;2.5 and 1.5&#x2266;z&#x2266;2.5. The invention also concerns a phosphor of general formula (SrCaBaMgZn)SiNO:Eu, wherein 0.002&#x2266;a&#x2266;0.2, 0.0&#x2266;b&#x2266;0.25, 0.0&#x2266;c&#x2266;0.25, 0.0&#x2266;d&#x2266;0.25, 0.0&#x2266;e&#x2266;0.25, 1.5&#x2266;x&#x2266;2.5, 1.5&#x2266;y&#x2266;2.5 and 1.5 &#x3c;z&#x3c;2.5.

Light-emitting device comprising an EU(II)-activated phosphor

Growing community of inventors

Aachen, Germany

Hans-Dieter Bausen