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Illumination system comprising a red-emitting ceramic luminescence converter

A light-emitting converter and lighting system technology, applied in the field of lighting systems, can solve the problem that it is difficult to produce a uniform layer with uniformly distributed particles, and achieve the effect of minimizing scattering

Inactive Publication Date: 2008-04-16
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But inside thin layers, the particles tend to coagulate, and thus, it is difficult to produce a homogeneous layer with evenly distributed particles

Method used

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  • Illumination system comprising a red-emitting ceramic luminescence converter
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  • Illumination system comprising a red-emitting ceramic luminescence converter

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Embodiment Construction

[0044] Monolithic ceramic luminous converter

[0045] The present invention focuses on the monolithic ceramic luminescence converter (CLC) in the lighting system of any configuration, which includes the general formula (Y 1-x RE x ) 2-z O 3 :(Eu 1-a A a ) z The europium(III) activated rare earth metal sesquioxide, wherein RE is selected from gadolinium, scandium and lutetium, and A is selected from bismuth, antimony, dysprosium, samarium, thulium and erbium, 0≤x<1, 0.001≤z≤0.2; And 0≤a<1, the lighting system includes a source of primary radiation, including but not limited to discharge lamps, fluorescent lamps, LEDs, laser diodes, OLEDs, and X-ray tubes. The term "radiation" as used herein includes radiation located in the UV, IR, and visible regions of the electromagnetic spectrum.

[0046] Generally speaking, the monolithic ceramic luminescence converter is a ceramic main body, which emits electromagnetic radiation in the visible or near-visible spectrum when excited by high-e...

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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 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 europium(III)- activated rare earth metal sesquioxide of general formula (YY-x-XEx)2-z(EU1-a-3Aa)z, wherein RE is selected from the group of gadolinium, scandium, and lutetium, A is selected from the group of bismuth, antimony, dysprosium, samarium, thulium, and erbium, 0 = x 1-x -REx)2-zO3:( Eu1-aAa)Z, wherein RE is selected from the group of gadolinium, scandium, and lutetium, A is selected from the group of dysprosium, samarium, thulium, and erbium, 0 = x <1, 0,001 = z = ; and 0 = a <1.

Description

Technical field [0001] The present invention generally relates to a lighting system including a radiation source and a ceramic luminescence converter. The invention also relates to a ceramic luminescence converter for such a lighting system. [0002] More specifically, the present invention relates to an illumination system and an ultraviolet or blue radiation emitting radiation source based on luminescence down-conversion and additional color mixing to generate a specific colored photoceramic luminescence converter including white light. Preferably light-emitting diodes are used as the radiation source. Background technique [0003] Nowadays, light-emitting lighting systems including visible color light-emitting diodes are used individually or in groups as radiation sources for various white or color lighting applications that require a robust, compact, light-weight, high-efficiency, long-life, and low-voltage source. [0004] These applications include the lighting of small LCD...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/14C09K11/78H01L33/50
CPCH01L33/507C09K11/7787H01L33/502C04B35/50C04B35/505C04B2235/3224C04B2235/3225C04B2235/3294C04B2235/3298C04B2235/5445C04B2235/9653H01L2224/13H01L2224/48091H01L2224/48247H01L2224/73253H01L2224/73265H01L2924/00011H01L2924/00014H01L2224/0401
Inventor P·施米特J·迈耶H·-H·贝克特尔T·A·科普
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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