JP6754548B2 - 高輝度用光変換器 - Google Patents
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Description
FOMopt=QE*Remission
として定義された変換器性能指数または光学的フィギュアオブメリットFOMoptは、0.6超、好ましくは0.7超、特に好ましくは0.8超である。これに関し量子効率は0.8超であるべきである。現況技術に基づいて予測され得るFOMoptは、これに対しこれより明らかに低い。
FOMtherm=熱伝導係数*(熱容量/体積)*min(Tfail、T0.8 quench)
にまとめることができる。熱的FOMは、変換材料の熱伝導度および最大限許容される温度負荷を考慮の対象とする。
Pmax opt≒4(Tmax Konv−TRT)/Rth
この場合、下式が適用され、
Tmax Konv=TRT+Q/A*d/λ
さらに変換器の熱抵抗Rth=d/(Aλ)および熱伝導度λで、Rth=d/(Aλ)である。
オプトセラミックスの熱伝導度λOC=10W/mK
接着剤の熱伝導度λKleb=0.3W/mK
Claims (11)
- 光線束として存在しており変換器上に小さな輝点を生成する(青色)励起光(4)から、高輝度の有色光または白色光を生成するための変換器であって、該変換器が、
− 前記励起光に対向する励起面と前記励起光から背けられた面とを備えた、変換材料から成る変換体(1)を含んでおり、前記面の互いの間隔が前記変換体(1)の厚さを規定しており、
− 前記変換材料が、ドープされたLuAGセラミックスから成るオプトセラミックスであり、前記変換材料が、セリウムでドーピングされており、該ドーピングの量が0.01〜2%の範囲内であり、前記オプトセラミックスが、前記励起光(4)の光線束断面と同等な空間的に小さな放射点を生成するために、前記励起面に入射する前記励起光(4)が前記変換体(1)の内部で強く散乱されて光閉じ込めにおいて比較的長波の光(5)に変換する粒状構造を備えており、拡散反射された前記励起光(4)および拡散反射された前記比較的長波の光(5)の割合を適合させるために前記変換体(1)の前記厚さを利用可能であり、拡散反射Remissionは少なくとも60%であり、
1mm厚の変換器での強い散乱が、波長600nmの長波光の拡散反射係数、拡散反射Remission>0.6を生じさせ、
量子効率QEが0.80よりも大きい、ことを特徴とする変換器。 - 前記変換材料が、セリウムでドーピングされており、該ドーピングの量が0.3〜1% の範囲内である、請求項1に記載の変換器。
- 光学的な変換器性能指数QE・Remission>0.6が達成され、同時に量子効率が0.80超である、請求項1又は2に記載の変換器。
- 前記セラミックス材料が、熱的性能指数(FOMtherm、stat)>1000(W/m)を有しており、前記熱的性能指数が、FOMtherm=熱伝導係数*(熱容量/体積)*min(Tfail、T0.8 quench)から算出される、請求項1乃至3のいずれか1項に記載の変換器。
- 前記変換材料の前記熱伝導度が、少なくとも5W/m*Kである請求項1乃至4のいずれか1項に記載の変換器。
- 静的動作における前記変換器が100cd/mm2より高い輝度を示す、請求項1乃至5のいずれか1項に記載の変換器。
- 前記変換体(1)の前記背けられた面にミラーが固定されており、前記ミラーが光収率を上昇させる、請求項1乃至6のいずれか1項に記載の変換器。
- 前記変換材料が、前記励起面でダイクロイックフィルターによりコーティングされている、請求項1乃至7のいずれか1項に記載の変換器。
- 前記励起光の10%〜30%の間を拡散反射するための散乱特性を有する前記変換器が形成されており、前記励起光および前記変換光の混合による光放射の適合が観察者に白色の色感覚をもたらす、請求項1乃至8のいずれか1項に記載の変換器。
- 前記励起光の10%〜30%の間を拡散反射するための散乱特性を有する前記変換器が形成されており、白色光付近の領域を達成するための励起光放射の適合が、前記変換器の前記励起光側での散乱層または粗面化によって行われる、請求項1乃至9のいずれか1項に記載の変換器。
- セラミックスの前記変換材料の光学的フィギュアオブメリットFOMopt=QE*Remissionが、0.5よりも大きいことを特徴とする、セラミックスの前記変換材料を備えた請求項1乃至10のいずれか1項に記載の変換器。
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011116826.9 | 2011-10-25 | ||
DE102011116826 | 2011-10-25 | ||
US201261614061P | 2012-03-22 | 2012-03-22 | |
US61/614,061 | 2012-03-22 | ||
DE102012005654.0 | 2012-03-22 | ||
DE102012005654.0A DE102012005654B4 (de) | 2011-10-25 | 2012-03-22 | Optischer Konverter für hohe Leuchtdichten |
PCT/EP2012/071069 WO2013060731A2 (de) | 2011-10-25 | 2012-10-24 | Optischer konverter für hohe leuchtdichten |
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JP2018146885A Division JP6761006B2 (ja) | 2011-10-25 | 2018-08-03 | 高輝度用光変換器 |
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JP2015503180A JP2015503180A (ja) | 2015-01-29 |
JP2015503180A5 JP2015503180A5 (ja) | 2015-12-03 |
JP6754548B2 true JP6754548B2 (ja) | 2020-09-16 |
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US (1) | US9738828B2 (ja) |
EP (1) | EP2771430A2 (ja) |
JP (2) | JP6754548B2 (ja) |
CN (2) | CN103906822A (ja) |
DE (1) | DE102012005654B4 (ja) |
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DE102014102350B4 (de) | 2014-02-24 | 2016-03-03 | Schott Ag | Konverteranordnung mit Kühlung für Lichtquellen mit hoher Leuchtdichte |
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2012
- 2012-03-22 DE DE102012005654.0A patent/DE102012005654B4/de active Active
- 2012-10-24 CN CN201280052795.XA patent/CN103906822A/zh active Pending
- 2012-10-24 WO PCT/EP2012/071069 patent/WO2013060731A2/de active Application Filing
- 2012-10-24 JP JP2014537598A patent/JP6754548B2/ja active Active
- 2012-10-24 EP EP12784532.9A patent/EP2771430A2/de not_active Withdrawn
- 2012-10-24 CN CN201810558154.0A patent/CN108753292A/zh active Pending
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2014
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Also Published As
Publication number | Publication date |
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WO2013060731A3 (de) | 2014-01-16 |
US9738828B2 (en) | 2017-08-22 |
CN103906822A (zh) | 2014-07-02 |
US20150070907A1 (en) | 2015-03-12 |
DE102012005654A1 (de) | 2013-04-25 |
JP2018185542A (ja) | 2018-11-22 |
JP2015503180A (ja) | 2015-01-29 |
EP2771430A2 (de) | 2014-09-03 |
DE102012005654B4 (de) | 2021-03-04 |
WO2013060731A2 (de) | 2013-05-02 |
JP6761006B2 (ja) | 2020-09-23 |
CN108753292A (zh) | 2018-11-06 |
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