JP6553168B2 - 乱反射材料、乱反射層、波長変換装置及び光源システム - Google Patents
乱反射材料、乱反射層、波長変換装置及び光源システム Download PDFInfo
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Description
表1には、異なる乱反射層による発光光束がレーザ電流に従って変化する状況が示されている。
Claims (11)
- 白色散乱粒子と接着剤とを含む乱反射材料であって、前記白色散乱粒子は白色度が85より大きく、且つ、前記白色散乱粒子は、白色度が90より大きい高反射散乱粒子と、屈折率が2.0以上である高屈折散乱粒子と、高熱伝導散乱粒子とを含み、前記高熱伝導散乱粒子は窒化ホウ素及び/又は窒化アルミニウムであり、前記高熱伝導散乱粒子の顆粒の形状は棒状又は扁平状であり、
前記白色散乱粒子は重量部として、前記接着剤1部に対して、前記白色度が90より大きい高反射散乱粒子0.08〜0.15部と、前記高屈折散乱粒子0.5〜0.7部と、前記高熱伝導散乱粒子0.3〜0.5部とを含み、
前記白色度が90より大きい高反射散乱粒子は酸化アルミニウム、酸化マグネシウム及び硫酸バリウムのうちの1種又は複数種であり、前記高屈折散乱粒子は二酸化チタン、酸化ジルコニウム及び酸化亜鉛のうちの1種又は複数種である、
ことを特徴とする乱反射材料。 - 前記白色散乱粒子と前記接着剤の重量比が0.88〜1.15:1であることを特徴とする、請求項1に記載の乱反射材料。
- 前記白色度が90より大きい高反射散乱粒子と前記高屈折散乱粒子は球状であり、好ましくは、前記白色度が90より大きい高反射散乱粒子と前記高屈折散乱粒子の半径は0.2〜0.5μmであることを特徴とする、請求項1に記載の乱反射材料。
- 前記高熱伝導散乱粒子が扁平状である場合、前記高熱伝導散乱粒子の扁平方向での長さは0.7〜7μmであり、厚さ方向での長さは0.02〜0.25μmであり、前記高熱伝導散乱粒子が棒状である場合、前記高熱伝導散乱粒子の長手方向での長さは0.7〜7μmであり、円周方向での直径は0.02〜0.25μmであることを特徴とする、請求項1又は3に記載の乱反射材料。
- 請求項1乃至4のいずれか1項に記載の乱反射材料で製造されることを特徴とする乱反射層。
- 請求項1乃至4のいずれか1項に記載の乱反射材料を有機担体と混合して混合材料を形成するステップと、
前記混合材料を基材の表面に塗布し、焼結して乱反射層を形成するステップと、
を備えることを特徴とする乱反射層の製造方法。 - 前記混合材料を基材の表面に塗布するステップにおいて、ナイフ塗布、スピン塗布又はスクリーン印刷で塗布を行うことを特徴とする、請求項6に記載の製造方法。
- 前記混合材料を基材の表面に塗布し、焼結して前記乱反射層を形成するステップは、
前記混合材料を基材の表面に塗布し、焼結して第一サブ乱反射層を形成するステップと、
前記混合材料を第一サブ乱反射層の表面に塗布し、焼結して第二サブ乱反射層を形成するステップと、
前記塗布と前記焼結を繰り返し、複数層のサブ乱反射層を形成し、さらに前記乱反射層を形成するステップと、
を備えることを特徴とする、請求項7に記載の製造方法。 - 高熱伝導基板(1)と、前記高熱伝導基板(1)に設けられた蛍光層(3)と、前記高熱伝導基板(1)と前記蛍光層(3)との間に位置する乱反射層(2)とを備える波長変換装置であって、前記乱反射層(2)が請求項5に記載の乱反射層であることを特徴とする波長変換装置。
- 前記乱反射層(2)の厚さは30〜100μmであり、前記乱反射層(2)の反射率は90%より高いことを特徴とする、請求項9に記載の波長変換装置。
- 波長変換装置を備える光源システムであって、前記波長変換装置は請求項9又は10に記載の波長変換装置であることを特徴とする光源システム。
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CN201410766308.7 | 2014-12-11 | ||
CN201410766308.7A CN105732118B (zh) | 2014-12-11 | 2014-12-11 | 漫反射材料、漫反射层、波长转换装置以及光源系统 |
PCT/CN2015/096219 WO2016091107A1 (zh) | 2014-12-11 | 2015-12-02 | 漫反射材料、漫反射层、波长转换装置以及光源系统 |
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