JP6348189B2 - 波長変換装置及びその関連発光装置 - Google Patents
波長変換装置及びその関連発光装置 Download PDFInfo
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Description
図1は、本発明の波長変換装置の実施例1の構造模式図である。図に示すように、波長変換装置100は、基板130と、波長変換材料及び第2の粘着剤を含む発光層110と、反射粒子、補助粒子及び第1の粘着剤を含む反射層120とを備える。
図2に示すように、図2は、本発明の波長変換装置の実施例2の構造模式図である。本実施例の波長変換装置200においける発光層210、反射層220及び基板230は、実施例1と同じであり、本実施例において繰り返して説明しない。実施例2は実施例1との相違は、図2に示すように、当該波長変換装置200は、ガラス層260と、光透過増強膜250とを更に備える。
図3に示すように、図3は、本発明の波長変換装置の実施例3の構造模式図である。本実施例の波長変換装置300においける発光層310、反射層320及び基板330は、実施例1と同じであり、本実施例において繰り返して説明しない。本実施例は実施例1との相違は、本実施例は、駆動装置340を更に備えることにある。具体的に、本実施例における駆動装置340は1つのモーターである。本実施例における基板330は、1つの円形基板であり、リング状の反射層320及び発光層310を載せるものである。駆動装置340は、基板330と固定接続され、駆動装置340が回転する時に、基板330及びその上の反射層320と発光層310が共に回転するように駆動される。これにより、励起光源の励起光が発光層上の一点を長時間で照射することで発光層310上の発光点にある波長変換材料が崩壊してしまうことは、避けることができる。
Claims (20)
- 順次に積層される基板と、反射層と、発光層とを備える波長変換装置であって、
前記反射層は、光を反射するための反射粒子と、前記反射粒子間の隙間を充填するための補助粒子と、前記反射粒子と前記補助粒子が層になるように粘着されるための第1の粘着剤とを含み、
前記発光層は、波長変換材料及び第2の粘着剤を含み、
前記反射粒子は酸化アルミニウムであり、前記補助粒子は酸化チタンであり、
前記反射層における前記補助粒子の質量分率は40〜75mass%であり、
前記反射層における前記反射粒子の質量分率は0.5〜30mass%であることを特徴とする波長変換装置。 - 前記酸化チタンは粒径が0.02〜1μmであり、前記酸化アルミニウムは粒径が0.01〜1μmであることを特徴とする請求項1に記載の波長変換装置。
- 前記酸化チタンは粒径が0.2〜0.5μmであり、前記酸化アルミニウムは粒径が0.02〜0.7μmであることを特徴とする請求項2に記載の波長変換装置。
- 前記反射層は厚さが70μmより小さく、可視光に対する反射率が95%より大きいことを特徴とする請求項1に記載の波長変換装置。
- 前記反射層は厚さが30μmより小さく、可視光に対する反射率が95%より大きいことを特徴とする請求項4に記載の波長変換装置。
- 前記反射層は孔隙率が35%より小さいことを特徴とする請求項1〜5の何れか1つに記載の波長変換装置。
- 前記第1の粘着剤は第1のガラス粉であり、前記反射層における前記第1のガラス粉の質量分率は20〜50mass%であることを特徴とする請求項1〜5の何れか1つに記載の波長変換装置。
- 前記第1のガラス粉はSiO2−B2O3−ROであり、RはMg、Ca、Sr、Ba、Na、Kから選択された1つ又は複数であることを特徴とする請求項7に記載の波長変換装置。
- 前記反射層は、前記反射粒子、補助粒子、第1のガラス粉及び有機キャリアを混合した後に焼結して形成されたものであり、前記有機キャリアは、エチルセルロースと、テルピネオールと、ブチルカルビトールとの混合液又はシリコーンオイルであり、前記反射層における有機キャリアの残留物の質量分率は0.001〜0.1mass%であることを特徴とする請求項7に記載の波長変換装置。
- 前記第2の粘着剤は、第2のガラス粉であり、SiO2−B2O3−RO、SiO2−TiO2−Nb2O5−R'2O、ZnO−P2O5から選択された1つ又は複数であり、RはMg、Ca、Sr、Ba、Na、Kから選択された1つ又は複数であり、R'はLi、Na、Kから選択された1つ又は複数であることを特徴とする請求項7に記載の波長変換装置。
- 前記第1の粘着剤はシリカゲル又は樹脂であり、前記補助粒子はカップリング剤で処理された酸化チタンであり、前記カップリング剤はシランカップリング剤及びオルトケイ酸エチルを含むことを特徴とする請求項1〜5の何れか1つに記載の波長変換装置。
- 前記第2の粘着剤はシリカゲル又は樹脂であることを特徴とする請求項11に記載の波長変換装置。
- 前記発光層における前記波長変換材料の体積分率は30〜75vol%であり、前記発光層における前記第2の粘着剤の体積分率は25〜70vol%であることを特徴とする請求項1、10又は12に記載の波長変換装置。
- 前記発光層における前記波長変換材料の体積分率は35〜55vol%であり、前記発光層における前記第2の粘着剤の体積分率は45〜65vol%であることを特徴とする請求項13に記載の波長変換装置。
- 前記発光層は厚さが50〜300μmであることを特徴とする請求項1、10又は12に記載の波長変換装置。
- 前記基板は窒化アルミニウム基板である、又は前記基板は金属基板であることを特徴とする請求項1に記載の波長変換装置。
- 前記発光層における前記反射層から遠い側に設置される光透過増強膜を更に備えることを特徴とする請求項1〜5の何れか1つに記載の波長変換装置。
- 第3のガラス粉からなり、前記発光層と前記光透過増強膜との間に設置されるガラス層を更に備えることを特徴とする請求項17に記載の波長変換装置。
- 前記ガラス層は厚さが20〜50μmであることを特徴とする請求項18に記載の波長変換装置。
- 励起光源を備える発光装置であって、
請求項1〜19の何れか1つに記載の波長変換装置を更に備えることを特徴とする発光装置。
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