JP2011180618A - 反射部材、反射部材の製造方法、発光装置、照明装置 - Google Patents
反射部材、反射部材の製造方法、発光装置、照明装置 Download PDFInfo
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- 239000010954 inorganic particle Substances 0.000 claims abstract description 81
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 19
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 18
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- 239000011230 binding agent Substances 0.000 claims description 11
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- 238000005452 bending Methods 0.000 claims description 7
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- 230000007797 corrosion Effects 0.000 description 1
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- 230000002542 deteriorative effect Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
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- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
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- H—ELECTRICITY
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- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
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- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
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Abstract
光などの波成分を効率よく反射させることができ、かつ反射特性の劣化が抑制された反射部材、それを用いた発光装置および照明装置を提供する。
【解決手段】
本発明は、反射部材(7)に関するものである。この反射部材(7)は、無機材料によ
り多孔質に形成された反射層61(7)を有している。反射層61(7)は、気孔率が1
5〜43%となるように形成するのが好ましい。このような反射層61(7)は、複数の
無機粒子をそれらの一部において一体化させることにより形成されている。
【選択図】 図4
Description
反射部材においては、まず無機粒子としてアルミナ粒子、ジルコニア粒子、イットリア粒子、チタニア粒子を準備し、それぞれの無機粒子を、カルシア粒子、シリカ粒子およびマグネシア粒子と、重量比で9.2:0.2:0.5:0.1の割合で秤量・混合し、混合物を調製した。
反射率は、分光測色計(ミノルタ製CM−3700D)により測定した。得られたサンプルにキセノンランプの光を入射してサンプル表面で反射させ、その反射光の強度を測定し入射光と反射光の強度比を反射率とした。なお、測定波長は、400nmまたは600nmとした。
95%以上とすることにより、光出力の高い優れたものになることがわかった。
2 発光装置
4 (発光装置の)発光素子
6 第1反射部材
61 (第1反射部材の)反射層
64 (第1反射部材の)孔
7 第2反射部材
70 (第2反射部材の)孔
Claims (22)
- 無機材料により多孔質に形成された反射層を有しており、
前記反射層は、複数の無機粒子を互いに一部分で一体化させて前記複数の無機粒子の間に空隙を設けることにより、抗折強度が1〜300MPaの多孔質に形成されている、反射部材。 - 前記空隙は、気体により、または前記無機粒子よりも屈折率の低い透明材料により満たされている、請求項1に記載の反射部材。
- 前記複数の無機粒子は、仮焼成することにより互いに一部分で一体化されている、請求項1に記載の反射部材。
- 前記無機粒子は、アルミナ、イットリア、ジルコニアおよびチタニアからなる選択される少なくとも一種を含んでいる、請求項1に記載の反射部材。
- 無機材料により多孔質に形成された、抗折強度が1〜300MPaの反射層を有する反射部材の製造方法であって、
複数の無機粒子を含む無機粒子層または無機粒子成型体を形成する工程と、
仮焼成することにより、前記無機粒子層または無機粒子成型体を多孔質化する工程と、
を含んでいる、反射部材の製造方法。 - 無機材料により多孔質に形成された、抗折強度が1〜300MPaの反射層を有する反射部材の製造方法であって、
複数の無機粒子およびバインダを含む被着材料を、基材の表面に吹き付けて前記基材の表面に多孔質層を形成する被着工程と、
前記多孔質層における複数の無機粒子を、仮焼成することにより互いに一部分で一体化する加熱工程とを含んでいる、反射部材の製造方法。 - 前記加熱工程には、前記バインダを除去する工程を含んでいる、請求項6に記載の反射部材の製造方法。
- 1または複数の発光要素と、前記発光要素から出射された光を反射させるための反射部材と、を備えた発光装置であって、
前記反射部材は、無機材料により多孔質に形成され、複数の無機粒子を互いに一部分で一体化させて前記複数の無機粒子の間に空隙を設けることにより抗折強度が1〜300MPaの多孔質に形成されている、発光装置。 - 前記空隙は、気体により、または前記無機粒子よりも屈折率の低い透明材料により満たされている、請求項8に記載の発光装置。
- 前記複数の無機粒子は、仮焼成することにより互いに一部分で一体化されている、請求項8に記載の発光装置。
- 前記無機粒子は、アルミナ、イットリア、ジルコニアおよびチタニアからなる選択される少なくとも一種を含んでいる、請求項8に記載の発光装置。
- 前記発光要素のピーク波長に対する前記反射部材の反射率が95%以上である、請求項8に記載の発光装置。
- 前記発光要素は、LEDチップまたはLDチップである、請求項8に記載の発光装置。
- 前記発光要素は、紫外光、近紫外光、または青色光を出射するように構成されている、請求項8に記載の発光装置。
- 前記反射部材は、全体が多孔質に構成された基体または枠体のうち少なくとも一方である、請求項8に記載の発光装置。
- 1または複数の発光装置を備えた照明装置であって、
前記発光装置として、1または複数の発光要素と、前記発光要素から出射された光を反射させるためのものであり、かつ無機材料により多孔質に形成された、抗折強度が1〜300MPaの反射層を有する反射部材と、を備え、
前記反射層は、複数の無機粒子を互いに一部分で一体化させて前記複数の無機粒子の間に空隙を設けることにより多孔質に形成されている、照明装置。 - 前記空隙は、気体により、または前記無機粒子よりも屈折率の低い透明材料により満たされている、請求項16に記載の照明装置。
- 前記複数の無機粒子は、仮焼成することにより互いに一部分で一体化されている、請求項16に記載の照明装置。
- 前記無機粒子は、アルミナ、イットリア、ジルコニアおよびチタニアからなる選択される少なくとも一種を含んでいる、請求項16に記載の照明装置。
- 前記発光要素のピーク波長に対する前記反射部材の反射率が95%以上である、請求項16に記載の照明装置。
- 前記発光要素は、LEDチップまたはLDチップである、請求項16に記載の照明装置。
- 前記発光要素は、紫外光、近紫外光、または青色光を出射するように構成されている、請求項16に記載の照明装置。
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