JP7429346B2 - 波長変換部材 - Google Patents
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- C—CHEMISTRY; METALLURGY
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/0225—Out-coupling of light
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
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- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7774—Aluminates
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
- H01S5/0087—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping for illuminating phosphorescent or fluorescent materials, e.g. using optical arrangements specifically adapted for guiding or shaping laser beams illuminating these materials
Description
[2]前記蛍光体粒子群に、内部に複数の気孔を有する蛍光体粒子が含まれる、上記[1]に記載の波長変換部材。
[3]前記蛍光体粒子群を構成する蛍光体粒子が単結晶の蛍光体粒子を含む、上記[1]又は[2]に記載の波長変換部材。
[4]前記単結晶の蛍光体粒子の少なくとも一部が、組成式(Y1-x-y-zLuxGdyCez)3+aAl5-aO12(0≦x≦0.9994、0≦y≦0.0669、0.0002≦z≦0.0067、-0.016≦a≦0.315)で表される範囲内の組成を有する、上記[3]に記載の波長変換部材。
[5]前記蛍光体粒子群が、表面が曲面形状である蛍光体粒子を含む、上記[1]~[4]のいずれか1項に記載の波長変換部材。
[6]前記封止部材がジメチル系シリコーン樹脂からなる、上記[1]~[5]のいずれか1項に記載の波長変換部材。
[7]前記封止部材がSiO2系化合物を主成分とする、上記[1]~[5]のいずれか1項に記載の波長変換部材。
[8]前記波長変換層において、前記蛍光体粒子群に加え、前記蛍光体粒子群を構成する蛍光体粒子よりも熱伝導率が高い添加剤が前記封止部材に封止されている、上記[1]~[7]のいずれか1項に記載の波長変換部材。
[9]前記添加剤が、Al2O3、SiC、ダイヤモンド(C)、AlN、BN、Si3N4、又はMgOからなる、上記[8]に記載の波長変換部材。
[10]前記波長変換層の上に、前記封止部材よりも屈折率の低い低屈折率層を備えた、上記[1]~[9]のいずれか1項に記載の波長変換部材。
[11]前記低屈折率層の厚さが5μm以上である、上記[10]に記載の波長変換部材。
図1は、第1の実施の形態に係る波長変換部材1の垂直断面図である。波長変換部材1は、支持体である基板10と、蛍光体粒子群12と蛍光体粒子群12を封止する封止部材13とを含み、基板10上に直接又は他の層を介して設けられた波長変換層11と、を備える。
本発明の第2の実施の形態に係る波長変換部材は、波長変換層の構成において、第1の実施の形態に係る波長変換部材と異なる。なお、波長変換部材以外の部材の構成など、第1の実施の形態と同様の点については、説明を省略又は簡略化する。
上記第1、2の実施の形態によれば、上述の条件1、好ましくは条件1と条件2を満たす波長変換層11を用いることにより、優れた熱伝導性を有し、高強度の励起光を照射して高強度の蛍光を取り出すことができる波長変換部材1、2を提供することができる。また、波長変換部材1、2の優れた熱伝導性は、蛍光体粒子群12の構成に係る条件1や条件2から得られるものであり、封止部材13の熱伝導性から受ける影響は小さいため、種々の材料からなる封止部材13を用いることができる。すなわち、封止部材13の材料の選択の幅が広い。
Claims (12)
- 支持体と、
蛍光体粒子群と前記蛍光体粒子群を封止する封止部材とを含み、前記支持体上に直接又は他の層を介して設けられた波長変換層と、
を備え、
前記波長変換層の厚さ方向に平行な任意の断面に、前記蛍光体粒子群の断面の面積比率が50%以上である所定の領域が含まれ、
前記所定の領域が、前記波長変換層の厚さが50μm以上の場合は前記波長変換層の底面からの厚さが50μmで幅が700μmの長方形の領域であり、前記波長変換層の厚さが50μm未満の場合は厚さが前記波長変換層の厚さで幅が700μmの長方形の領域であり、
前記蛍光体粒子群が、前記波長変換層の厚さ方向に平行な断面における断面の最大長さが40μm以上である大径の蛍光体粒子と、前記波長変換層の厚さ方向に平行な断面における断面の最大長さが30μm以下である小径の蛍光体粒子とを含み、
前記所定の領域に、最大長さが40μm以上の前記大径の蛍光体粒子の断面が2個以上含まれ、
前記大径の蛍光体粒子が単結晶の蛍光体粒子であり、
前記小径の蛍光体粒子が単結晶の蛍光体粒子および/または多結晶の蛍光体粒子である、
波長変換部材。 - 前記小径の蛍光体粒子が単結晶の蛍光体粒子である、
請求項1に記載の波長変換部材。 - 前記小径の蛍光体粒子が多結晶の蛍光体粒子である、
請求項1に記載の波長変換部材。 - 前記蛍光体粒子群に、内部に複数の気孔を有する蛍光体粒子が含まれる、
請求項1~3のいずれか1項に記載の波長変換部材。 - 前記単結晶の蛍光体粒子の少なくとも一部が、組成式(Y1-x-y-zLuxGdyCez)3+aAl5-aO12(0≦x≦0.9994、0≦y≦0.0669、0.0002≦z≦0.0067、-0.016≦a≦0.315)で表される範囲内の組成を有する、
請求項1~4のいずれか1項に記載の波長変換部材。 - 前記蛍光体粒子群が、表面が曲面形状である蛍光体粒子を含む、
請求項1~5のいずれか1項に記載の波長変換部材。 - 前記封止部材がジメチル系シリコーン樹脂からなる、
請求項1~6のいずれか1項に記載の波長変換部材。 - 前記封止部材がSiO2系化合物を主成分とする、
請求項1~6のいずれか1項に記載の波長変換部材。 - 前記波長変換層において、前記蛍光体粒子群に加え、前記蛍光体粒子群を構成する蛍光体粒子よりも熱伝導率が高い添加剤が前記封止部材に封止されている、
請求項1~8のいずれか1項に記載の波長変換部材。 - 前記添加剤が、Al2O3、SiC、ダイヤモンド(C)、AlN、BN、Si3N4、又はMgOからなる、
請求項9に記載の波長変換部材。 - 前記波長変換層の上に、前記封止部材よりも屈折率の低い低屈折率層を備えた、
請求項1~10のいずれか1項に記載の波長変換部材。 - 前記低屈折率層の厚さが5μm以上である、
請求項11に記載の波長変換部材。
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JP2019183330A JP7429346B2 (ja) | 2019-10-03 | 2019-10-03 | 波長変換部材 |
EP20871164.8A EP4039770A4 (en) | 2019-10-03 | 2020-09-30 | WAVELENGTH CONVERSION ELEMENT |
PCT/JP2020/037273 WO2021066054A1 (ja) | 2019-10-03 | 2020-09-30 | 波長変換部材 |
CN202080069996.5A CN114503378A (zh) | 2019-10-03 | 2020-09-30 | 波长转换构件 |
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JP2017137394A (ja) | 2016-02-02 | 2017-08-10 | 株式会社タムラ製作所 | 蛍光体及びその製造方法、蛍光体含有部材、及び発光装置又はプロジェクター |
WO2018074132A1 (ja) | 2016-10-21 | 2018-04-26 | 日本電気硝子株式会社 | 波長変換部材、発光デバイス及び波長変換部材の製造方法 |
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JP2012008177A (ja) | 2010-06-22 | 2012-01-12 | Seiko Epson Corp | 蛍光体ホイールおよびプロジェクター |
JP6430123B2 (ja) * | 2014-02-06 | 2018-11-28 | スタンレー電気株式会社 | 波長変換体及びそれを用いた発光装置 |
US10508801B2 (en) * | 2016-01-22 | 2019-12-17 | Ngk Spark Plug Co., Ltd. | Wavelength conversion member and light-emitting device |
CN107305921A (zh) * | 2016-04-20 | 2017-10-31 | 松下知识产权经营株式会社 | 波长转换部件、光源以及车辆用前照灯 |
CN116293491A (zh) * | 2016-04-25 | 2023-06-23 | 日本特殊陶业株式会社 | 波长转换构件、其制造方法及发光装置 |
JP2018087327A (ja) * | 2016-11-22 | 2018-06-07 | 積水化学工業株式会社 | 波長変換インク |
JP6917244B2 (ja) | 2017-08-23 | 2021-08-11 | 日本特殊陶業株式会社 | 蛍光体ホイール、ホイールデバイスおよびプロジェクター |
JP7178074B2 (ja) * | 2018-03-20 | 2022-11-25 | 国立研究開発法人物質・材料研究機構 | 波長変換部材及び波長変換素子、並びに波長変換部材の製造方法 |
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WO2018074132A1 (ja) | 2016-10-21 | 2018-04-26 | 日本電気硝子株式会社 | 波長変換部材、発光デバイス及び波長変換部材の製造方法 |
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