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Illumination system comprising a radiation source and a fluorescent material

A technology for lighting systems and fluorescent materials, which is applied in the field of lighting systems and can solve problems such as danger and reducing red recognition

Active Publication Date: 2008-04-16
LUMILEDS HLDG BV
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Problems solved by technology

[0011] In the case where a dichroic (BY) based light source of the dichroic radiation type described above is used in this case, the problem encountered is that, due to a deficiency in the red region of the visible spectrum (647-700nm range), the Possibility of recognizing red, an important color used for hazard indication

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  • Illumination system comprising a radiation source and a fluorescent material
  • Illumination system comprising a radiation source and a fluorescent material
  • Illumination system comprising a radiation source and a fluorescent material

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[0048] The focus of the present invention is europium(II) activated halogeno-oxonitridosilicate as a phosphor in any structure of a lighting system that includes a radiation source. , Radiation sources include, but are not limited to, discharge lamps, fluorescent lamps, LEDs, LDs and X-ray tubes. The term "radiation" as used herein includes radiation in the UV, IR, and visible regions of the electromagnetic spectrum.

[0049] Although the present phosphor is considered to be used in a wide range of illumination arrays, the description of the invention specifically refers to and applies specifically to light emitting diodes, especially UV and blue light emitting diodes.

[0050] The fluorescent material according to the present invention includes a europium(II)-activated halogeno-oxonitridosilicate as a phosphor. The phosphor conforms to the general formula Ea X Si y N 2 / 3x+4 / 3y :Eu z O a X b , Where 1≤x≤2, 3≤y≤7; 0.001<z≤0.09, 0.005<a≤0.05, 0.01<b≤0.3; Ea is at least one alkaline ...

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Abstract

The invention concerns an illumination system comprising a radiation source and a fluorescent material comprising at least one phosphor capable of absorbing 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 a yellow to red-emitting europium(II) activated halogeno-oxonitridosilicate of the general formula EaxSiyN2 / 3X+4 / 3y:EuzOaXb, wherein 1<=x<=2; 3<=y<=7; 0.001 < z<=0.09, 0.005 0.3, EA is at least one earth alkaline metal chosen from the group of calcium, barium and strontium and X is at least one halogen chosen from the group of fluorine, chlorine, bromine and iodine, and a method of manufacturing same.

Description

Technical field [0001] The present invention generally relates to a lighting system including a radiation source and a fluorescent material, the fluorescent material including a phosphor. The present invention also relates to a phosphor used in such a lighting system, and a method of manufacturing such a phosphor. [0002] More specifically, the present invention relates to a lighting system and a fluorescent material including a phosphor for generating white light based on a radiation source emitting ultraviolet or blue radiation through luminescent down conversion and additional color mixing Special colored light. Especially consider the use of light-emitting diodes as radiation sources. Background technique [0003] Recently, various attempts have been made to manufacture a white light emitting lighting system by using light emitting diodes as a radiation source. When a configuration of red, green, and blue light emitting diodes is used to generate white light, a problem is en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/79C09K11/86C09K11/77H01L33/48H01L33/50H01L33/56H01L33/60H01L33/62
CPCC09K11/7734C09K11/77342C09K11/77347C09K11/77348
Inventor P·施米特T·祖斯特尔H·霍佩W·施尼克W·梅尔
Owner LUMILEDS HLDG BV
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