Koninklijke Philips Corporation N.v.

Silvia Golsch

Peter Josef Schmidt

Wolfgang Busselt

Hans-Helmut Bechtel

Thomas Justel

Volker Bachmann

The invention relates to a light-emitting device comprising a conversion structure and one or several LEDs (), which emit light into the conversion structure. The light is then converted and emitted with a high radiant flux.

Light emitting device with conversion structure

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&#x3c;a&#x3c;0.2, 0.0&#x3c;b&#x3c;1.0, 0.0&#x3c;c&#x3c;0.5, 0.0 &#x3c;d&#x3c;0.25, 0.0&#x3c;e&#x3c;0.25, 0.0&#x3c;f&#x3c;0.2, 0.0&#x3c;g&#x3c;1.0, 1.5&#x3c;x&#x3c;2.5, 1.5&#x3c;y&#x3c;2.5 and 1.5&#x3c;z&#x3c;2.5.

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Wurselen, Germany

Silvia Golsch