JP2005012160A - 発光装置及び全方向性反射器 - Google Patents
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Abstract
【解決手段】 発光装置は、第1の波長範囲の1次光を発生する光発生ユニット51と、光発生ユニット51に結合され、1次光の一部を第2の波長範囲の2次光に変換する波長変換部材4と、波長変換部材4に結合された全方向性フォトニック結晶からなり、2次光及び1次光のうち波長変換部材4によって変換されなかった残部を受ける少なくとも1個の全方向性反射器6と、を含む。全方向性反射器6は、1次光の残部を、いかなる入射角度及び偏光であっても、実質的に全反射して波長変換部材4に戻す反射性を具える。
【選択図】 図2
Description
11:容器
12:凹部
13:発光ダイオード
14:被包層
15:DBR鏡
16:波長変換部材
17:レンズ
31:第1のガラス基板
32:第2のガラス基板
4:波長変換部材
41:上面
42:下面
43:側面(左側面、右側面)
51:光発生ユニット
501:下面
511:光発生素子
6:全方向性反射器
61:誘電体ユニット
601:上面
602:下面
611:第1の誘電体層
612:第2の誘電体層
613:第3の誘電体層
71:反射金属層
72:反射金属層(左反射金属層、右反射金属層)
Claims (24)
- 第1の波長範囲の1次光を発生する光発生ユニットと、
前記光発生ユニットに結合され、前記1次光の一部を第2の波長範囲の2次光に変換する波長変換部材と、
前記波長変換部材に結合された全方向性フォトニック結晶からなり、前記2次光及び前記1次光のうち前記波長変換部材によって変換されなかった残部を受ける少なくとも1個の全方向性反射器と、
を有することを特徴とする発光装置。 - 前記全方向性反射器は、互いに屈折率及び厚さが異なる少なくとも2層の誘電体層を備えた誘電体ユニットを少なくとも1個含み、
前記全方向性反射器は、前記2次光を透過させる透過性と、前記1次光の残部を実質的に全反射して前記波長変換部材に戻す反射性と、を具えることを特徴とする請求項1に記載の発光装置。 - 前記全方向性反射器は、互いに屈折率及び厚さが異なる少なくとも3層の誘電体層を備えた誘電体ユニットを少なくとも1個含み、
前記全方向性反射器は、前記2次光を透過させる透過性と、前記1次光の残部を実質的に全反射して前記波長変換部材に戻す反射性と、を具えることを特徴とする請求項1に記載の発光装置。 - 前記複数の誘電体層は、第1、第2及び第3の誘電体層を含み、
前記第2の誘電体層は、前記第1及び第3の誘電体層に挟まれており、前記第1及び第3の誘電体層よりも低い屈折率を具え、
前記第3の誘電体層は、前記第1の誘電体層よりも低い屈折率を具えることを特徴とする請求項3に記載の発光装置。 - 前記光発生ユニットは、前記波長変換部材の1面にはめ込まれており、
前記全方向性反射器は、前記波長変換部材の前記1面とは反対側の前記波長変換部材の面に配置されていることを特徴とする請求項3に記載の発光装置。 - 第2の全方向性反射器と、
前記光発生ユニット及び前記波長変換部材をそれらの間に挟む第1及び第2のガラス基板と、
を有し、
前記波長変換部材は、互いに対向する上面及び下面を備え、
前記光発生ユニットは、前記波長変換部材の前記下面にはめ込まれた複数の光発生素子の1次元又は2次元の配列を含み、
前記第2のガラス基板は、前記波長変換部材の前記下面上に形成されると共に、前記光発生ユニットを覆い、
前記第1のガラス基板は、前記波長変換部材の前記上面上に形成され、
前記第1及び第2の全方向性反射器は、夫々前記第1及び第2のガラス基板上に形成されていることを特徴とする請求項5に記載の発光装置。 - 前記第2の全方向性反射器は、互いに屈折率及び厚さが異なる少なくとも2層の誘電体層を備えた誘電体ユニットを少なくとも1個含むことを特徴とする請求項6に記載の発光装置。
- 前記第1の誘電体層は、TiO2から形成され、
前記第2の誘電体層は、SiO2から形成され、
前記第3の誘電体層は、Ta2O5から形成されていることを特徴とする請求項4に記載の発光装置。 - 前記各光発生素子は、350nm乃至470nmの波長の前記1次光を発生させる発光ダイオードの形をとっていることを特徴とする請求項6に記載の発光装置。
- 前記波長変換部材は、前記1次光を400nm乃至700nmの波長の前記2次光に変換するように、蛍光材料がその中に分散した透明樹脂母材を含むことを特徴とする請求項9に記載の発光装置。
- 前記第2の全方向性反射器上に形成された反射金属層を有することを特徴とする請求項7に記載の発光装置。
- 第2の全方向性反射器と、
前記波長変換部材をそれらの間に挟む第1及び第2のガラス基板と、
を有し、
前記波長変換部材は、互いに対向する上面及び下面並びに互いに対向する左側面及び右側面を備え、
前記光発生ユニットは、前記波長変換部材の前記左側面にはめ込まれた複数の光発生素子の左列と、前記波長変換部材の前記右側面にはめ込まれた複数の光発生素子の右列と、を含み、
前記第2のガラス基板は、前記波長変換部材の前記下面上に形成され、
前記第1のガラス基板は、前記波長変換部材の前記上面上に形成され、
前記第1及び第2の全方向性反射器は、夫々前記第1及び第2のガラス基板上に形成されていることを特徴とする請求項3に記載の発光装置。 - 前記第2の全方向性反射器は、互いに屈折率及び厚さが異なる少なくとも2層の誘電体層を備えた誘電体ユニットを少なくとも1個含むことを特徴とする請求項12に記載の発光装置。
- 前記波長変換部材の前記左側面及び右側面上に形成され、夫々前記光発生素子の前記左列及び右列を覆う左反射金属層及び右反射金属層を有することを特徴とする請求項13に記載の発光装置。
- 前記波長変換部材は、互いに対向する上面及び下面を備え、
前記波長変換部材の前記上面上に形成された第1のガラス基板を有し、
前記全方向性反射器は、前記第1のガラス基板上に形成され、
前記光発生ユニットは、前記波長変換部材の前記下面に埋め込まれた光発生素子を有することを特徴とする請求項3に記載の発光装置。 - 第2の全方向性反射器及び反射金属層を有し、
前記光発生素子は、下面を備え、
前記第2の全方向性反射器は、前記波長変換部材の前記下面に埋め込まれ、前記光発生素子の前記下面上に形成された上面と、前記上面と反対側の下面と、を備え、
前記反射金属層は、前記波長変換部材の前記下面上に形成されると共に、前記第2の全方向性反射器の前記下面を覆うことを特徴とする請求項15に記載の発光装置。 - 前記反射金属層上に形成された第2のガラス基板を有することを特徴とする請求項16に記載の発光装置。
- 前記第2の全方向性反射器は、互いに屈折率及び厚さが異なる少なくとも2層の誘電体層を備えた誘電体ユニットを少なくとも1個含むことを特徴とする請求項16に記載の発光装置。
- 第2の全方向性反射器及び第2のガラス基板を有し、
前記光発生素子は、下面を備え、
前記第2の全方向性反射器は、前記波長変換部材の前記下面に埋め込まれ、前記光発生素子の前記下面上に形成された上面と、前記上面と反対側の下面と、を備え、
前記第2のガラス基板は、前記波長変換部材の前記下面上に形成されると共に、前記第2の全方向性反射器の前記下面を覆うことを特徴とする請求項15に記載の発光装置。 - 前記第2のガラス基板上に形成され、前記第2のガラス基板を覆う反射金属層を有することを特徴とする請求項19に記載の発光装置。
- 前記第2の全方向性反射器は、互いに屈折率及び厚さが異なる少なくとも2層の誘電体層を備えた誘電体ユニットを少なくとも1個含むことを特徴とする請求項19に記載の発光装置。
- 空間的に周期的に誘電率が変化する全方向性結晶の誘電体構造を有し、
前記誘電体構造は、互いに屈折率及び厚さが異なる少なくとも3層の誘電体層を備えた誘電体ユニットを少なくとも1個含み、
第1の波長範囲の1次光を実質的に全反射する反射性及び前記第1の波長範囲外の第2の波長範囲の2次光を透過させる透過性を示す散乱性を具えることを特徴とする全方向性反射器。 - 前記複数の誘電体層は、第1、第2及び第3の誘電体層を含み、
前記第2の誘電体層は、前記第1及び第3の誘電体層に挟まれており、前記第1及び第3の誘電体層よりも低い屈折率を具え、
前記第3の誘電体層は、前記第1の誘電体層よりも低い屈折率を具えることを特徴とする請求項22に記載の全方向性反射器。 - 前記第1の誘電体層は、TiO2から形成され、
前記第2の誘電体層は、SiO2から形成され、
前記第3の誘電体層は、Ta2O5から形成されていることを特徴とする請求項23に記載の全方向性反射器。
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008004645A (ja) * | 2006-06-20 | 2008-01-10 | Harison Toshiba Lighting Corp | 発光デバイス |
JP2011511452A (ja) * | 2008-01-31 | 2011-04-07 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 発光デバイス |
KR101490233B1 (ko) * | 2010-04-15 | 2015-02-06 | 피에스아이 주식회사 | 장파장 투과필터를 포함하는 형광체 전환 단색 led |
KR20150020646A (ko) * | 2015-01-16 | 2015-02-26 | 피에스아이 주식회사 | 장파장 투과필터를 포함하는 형광체 전환 단색 led |
WO2015133000A1 (ja) * | 2014-03-06 | 2015-09-11 | 丸文株式会社 | 深紫外led及びその製造方法 |
US9349918B2 (en) | 2011-07-12 | 2016-05-24 | Marubun Corporation | Light emitting element and method for manufacturing same |
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US7367691B2 (en) | 2008-05-06 |
JP2008186819A (ja) | 2008-08-14 |
US20040252509A1 (en) | 2004-12-16 |
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