JP5770269B2 - 白色光源およびそれを用いた白色光源システム - Google Patents
白色光源およびそれを用いた白色光源システム Download PDFInfo
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- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
- H01L33/504—Elements with two or more wavelength conversion materials
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2101/00—Point-like light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
- F21Y2113/17—Combination of light sources of different colours comprising an assembly of point-like light sources forming a single encapsulated light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Led Device Packages (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
(実施例1)
LEDチップとして発光ピーク波長450nmの青色発光LEDを用意した。次に、450nmの電磁波を照射することにより発光する蛍光体として、ピーク波長が490nmであるユーロピウム付活ストロンチウムアルミン酸塩青緑色蛍光体と、ピーク波長が530nmであるユーロピウム付活オルソ珪酸塩緑色蛍光体、ピーク波長が555nmであるユーロピウム付活オルソ珪酸塩黄色蛍光体と、ピーク波長が555nmであるユーロピウム付活オルソ珪酸塩黄色蛍光体と、ピーク波長が630nmであるユーロピウム付活ストロンチウムサイアロン赤色蛍光体との混合物を用意した。なお、各蛍光体の平均粒径は15μmとした。各蛍光体の混合比は重量比(質量比)として青緑色蛍光体:緑色蛍光体:黄色蛍光体:赤色蛍光体=20:25:15:40の比率で混合し、透明樹脂と混合して、グローブ内面に塗布することにより、図19に示した電球型白色光源を作製した。得られた白色光源は、発光色の相関色温度が2700Kであった。この色温度2700Kは朝日の自然光と同等の色温度である。
LEDチップとして発光ピーク波長が445nmの青色発光LEDを用意した。次に、445nmの電磁波を照射することにより発光する蛍光体として、ピーク波長が490nmであるユーロピウム付活ストロンチウムアルミン酸塩青緑色蛍光体と、ピーク波長が530nmであるユーロピウム付活オルソ珪酸塩緑色蛍光体と、ピーク波長が555nmであるユーロピウム付活オルソ珪酸塩緑色蛍光体と、ピーク波長が530nmであるユーロピウム付活オルソ珪酸塩黄色蛍光体と、ピーク波長が630nmであるユーロピウム付活ストロンチウムサイアロン赤色蛍光体との混合物を用意した。
LEDチップとして発光ピーク波長が450nmの青色発光LEDを用意した。450nmの電磁波を照射することにより発光する蛍光体は、ピーク波長が490nmであるユーロピウム付活ストロンチウムアルミン酸塩青緑色蛍光体と、ピーク波長が530nmであるユーロピウム付活オルソ珪酸塩緑色蛍光体と、ピーク波長が555nmであるユーロピウム付活オルソ珪酸塩黄色蛍光体と、ピーク波長が630nmであるユーロピウム付活ストロンチウムサイアロン赤色蛍光体との混合物から構成した。
発光ピーク波長460nmの青色発光ダイオードと、セリウム付活イットリウムアルミニウムガーネット黄色蛍光体とを組み合わせて、比較例1に係る白色光源を作製した。比較例1の白色光源の色温度は5100Kであり、差異A(λ)は図18に示した通り−0.28〜+0.04であった。
1a 白色光源システム
2,2a LEDモジュール
3 基体部
4 グローブ(ハウジング)
5 絶縁部材
6 口金
7 基板
8,8a,8b,8c LEDチップ
9,9a,9b,9c 蛍光体層
10 透明樹脂層
11,11a 点灯回路
12,12a 配線
Claims (10)
- 発光ピークが421〜490nmにある青色発光LEDと、前記青色発光LEDに励起され白色に発光する蛍光体とを具備した白色光源であり、前記蛍光体は発光ピーク波長の異なる少なくとも4種類以上の蛍光体からなり、そのうちの少なくとも1種がピーク波長480nm〜490nmの範囲にあるユーロピウム付活ストロンチウムアルミン酸塩青緑色発光蛍光体であって、前記白色光源の発光スペクトルをP(λ)、白色光源と同じ色温度を示す黒体輻射の発光スペクトルをB(λ)、分光視感効率のスペクトルをV(λ)、P(λ)×V(λ)が最大となる波長をλmax1、B(λ)×V(λ)が最大となる波長をλmax2としたとき、関係式:
−0.2≦[(P(λ)×V(λ))/(P(λmax1)×V(λmax1))−(B(λ)×V(λ))/(B(λmax2)×V(λmax2))]≦+0.2、
を満たすことを特徴とする白色光源。 - 関係式:−0.1≦[(P(λ)×V(λ))/(P(λmax1)×V(λmax1))−(B(λ)×V(λ))/(B(λmax2)×V(λmax2))]≦+0.1、
を満たすことを特徴とする請求項1記載の白色光源。 - 前記白色光源の色温度が2500〜5400Kであることを特徴とする請求項1ないし請求項2のいずれか1項に記載の白色光源。
- 前記蛍光体の発光ピークが420〜700nmの範囲にあることを特徴とする請求項1記載の白色光源。
- 前記白色光源が、ピーク波長が異なる5種類以上の蛍光体を具備することを特徴とする請求項1ないし請求項4のいずれか1項に記載の白色光源。
- 各蛍光体の隣接するピーク波長の間隔が150nm以下であることを特徴とする請求項1ないし請求項5のいずれか1項に記載の白色光源。
- 蛍光体は、蛍光体粒子と樹脂とを混合した蛍光体層を形成していることを特徴とする請求項1ないし請求項6のいずれか1項に記載の白色光源。
- 前記蛍光体層が、樹脂中に蛍光体粒子を分散した蛍光体要素を複数積層した多層構造を具備していることを特徴とする請求項7記載の白色光源。
- 複数の青色発光LEDを具備し、−0.2≦[(P(λ)×V(λ))/(P(λmax1)×V(λmax1))−(B(λ)×V(λ))/(B(λmax2)×V(λmax2))]≦+0.2を満たし、かつ異なる発光スペクトルを有する複数の白色光源を一つのハウジング内に配置したことを特徴とする請求項1ないし請求項8のいずれか1項に記載の白色光源。
- 請求項1ないし請求項9のいずれか1項に記載の白色光源を複数個用いたことを特徴とする白色光源システム。
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JP2013510842A JP5770269B2 (ja) | 2011-04-22 | 2011-06-23 | 白色光源およびそれを用いた白色光源システム |
PCT/JP2011/064405 WO2012144087A1 (ja) | 2011-04-22 | 2011-06-23 | 白色光源およびそれを用いた白色光源システム |
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US (1) | US9109762B2 (ja) |
EP (4) | EP2701213B8 (ja) |
JP (1) | JP5770269B2 (ja) |
CN (1) | CN103493226B (ja) |
WO (1) | WO2012144087A1 (ja) |
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US9112120B2 (en) * | 2011-02-09 | 2015-08-18 | Kabushiki Kaisha Toshiba | White light source and white light source system including the same |
CN104025322B (zh) * | 2011-10-24 | 2017-05-03 | 株式会社东芝 | 白光源和包括所述白光源的白光源系统 |
JP6189217B2 (ja) * | 2011-11-07 | 2017-08-30 | 株式会社東芝 | 白色光源およびそれを用いた白色光源システム |
CN104136832B (zh) * | 2012-02-20 | 2017-07-25 | 夏普株式会社 | 照明装置 |
JP2014203932A (ja) * | 2013-04-03 | 2014-10-27 | 株式会社東芝 | 発光装置 |
KR101313907B1 (ko) * | 2013-06-20 | 2013-10-01 | 농업회사법인 주식회사 퓨쳐그린 | 식물공장용 led 조명모듈과 이를 탑재한 식물공장용 led 조명장치 |
KR101795740B1 (ko) * | 2013-11-08 | 2017-11-08 | 루미마이크로 주식회사 | 발광장치 |
EP3061320B1 (en) * | 2014-02-21 | 2017-04-12 | Philips Lighting Holding B.V. | A light emitting module, a lamp, a luminaire and a method of illuminating an object |
CN114216066A (zh) * | 2014-03-04 | 2022-03-22 | 豪倍公司 | 光束整形光谱滤波的光学元件及其照明设备 |
WO2016067609A1 (ja) * | 2014-10-28 | 2016-05-06 | 株式会社 東芝 | 白色光源および白色光源システム |
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WO2012144087A1 (ja) | 2012-10-26 |
EP3848985B1 (en) | 2023-06-07 |
EP2701213A1 (en) | 2014-02-26 |
EP4258819A2 (en) | 2023-10-11 |
EP3270425A1 (en) | 2018-01-17 |
EP2701213A4 (en) | 2014-10-22 |
EP3848985C0 (en) | 2023-06-07 |
US9109762B2 (en) | 2015-08-18 |
JPWO2012144087A1 (ja) | 2014-07-28 |
EP2701213B8 (en) | 2020-11-04 |
EP2701213B1 (en) | 2020-05-27 |
US20140036499A1 (en) | 2014-02-06 |
CN103493226B (zh) | 2016-09-28 |
EP3848985A1 (en) | 2021-07-14 |
EP3848985A8 (en) | 2021-08-25 |
CN103493226A (zh) | 2014-01-01 |
EP4258819A3 (en) | 2024-01-24 |
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