KR100702273B1 - 조명 시스템 - Google Patents
조명 시스템 Download PDFInfo
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- KR100702273B1 KR100702273B1 KR1020007005691A KR20007005691A KR100702273B1 KR 100702273 B1 KR100702273 B1 KR 100702273B1 KR 1020007005691 A KR1020007005691 A KR 1020007005691A KR 20007005691 A KR20007005691 A KR 20007005691A KR 100702273 B1 KR100702273 B1 KR 100702273B1
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- 239000000463 material Substances 0.000 claims abstract description 54
- 238000005286 illumination Methods 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 22
- 230000003595 spectral effect Effects 0.000 claims description 24
- 238000009877 rendering Methods 0.000 claims description 22
- 229910004283 SiO 4 Inorganic materials 0.000 claims description 8
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 229910052793 cadmium Inorganic materials 0.000 claims description 4
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims 1
- 238000001228 spectrum Methods 0.000 description 5
- 239000003086 colorant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000000411 transmission spectrum Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
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- C09K11/58—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing copper, silver or gold
- C09K11/582—Chalcogenides
- C09K11/584—Chalcogenides with zinc or cadmium
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- C09K11/64—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing aluminium
- C09K11/641—Chalcogenides
- C09K11/642—Chalcogenides with zinc or cadmium
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- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/77342—Silicates
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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
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- 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
- F21K9/233—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 specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/08—Combinations of only two kinds of elements the elements being filters or photoluminescent elements and reflectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
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- H05B45/20—Controlling the colour of the light
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- H05B45/40—Details of LED load circuits
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- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
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- 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
- F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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Abstract
Description
적합한 발광 물질로는 (Sr,Ca)2SiO4:Eu2+, Ba2SiO4:Eu2+, SrGa2S4, ZnS:Cu+, ZnS:Au+, ZnS:Al3+, (Zn,Cd)S:Ag+, CaS:Ce3+가 있다. 상기 물질들은 450㎚에서 비교적 높은 양자 효율과 광 흡수성을 갖는다. 이 물질들은 또한 적색광이 원하는 녹색광으로 변환될 때 상대적으로 매우 높은 루멘 당량을 나타낸다.
또한, 조명 시스템의 색 온도(color temperature)를 변경시킬 수 있는 것이 바람직하다. 본 발명에 따른 조명 시스템의 다른 실시예는 발광 다이오드들을 개별적으로 구동시키는 것에 의해 조명 시스템의 색 온도를 조정할 수 있는 것을 특징으로 한다. 색 온도는 LED들을 개별적으로 구동시킴으로서 (전기적으로) 조정 가능하다. 이러한 조정 소자(adjusting element)의 적절한 실시예는 적색 LED와 청색 LED로 이루어진 제 1 다이오드 체인과 단색의 청색(또는 단색의 적색) LED로 이루어진 제 2 다이오드 체인을 포함한다. 이러한 조정 소자의 보다 더 적절한 실시예는 청색과 녹색 LED로 이루어진 제 1 다이오드 체인과 단색의 청색(또는 단색의 녹색) LED로 이루어진 제 2 다이오드 체인을 포함한다. 이러한 결과로, 2000∼6300K의 조정 가능한 색 온도 범위가 획득된다. 이러한 색 온도 조정은 부분적으로 발광 물질(변환 수단)의 양에 의해 결정된다.
본 발명의 보호받고자 하는 범주는 본 명세서에 제시된 실시예들로 한정되지 않는다. 본 발명은 각각의 새로운 특성 및 특성들의 각각의 조합으로 구현될 수 있다. 청구항에서의 참조 부호는 상기 청구항의 보호 범주를 제한하지 않는다. "포함한다"라는 용어의 사용은 청구항에서 언급된 구성 요소들외에 다른 요소가 존재할 수 있다는 것을 배제하지 않는다. 단수로 표현된 구성 요소는 복수의 그와 같은 구성 요소가 존재할 수 있다는 것을 배제하지 않는다.
Claims (16)
- 작동 중에 사전 선택된 파장 범위의 가시광선을 방출하는 적어도 2개의 발광 다이오드(light-emitting diodes)(6, 6', …, 7, 7', …; 106, 106', …, 107, 107', …; 206, 207)를 포함하는 조명 시스템(lighting system)(1; 101; 201)에 있어서,상기 조명 시스템(1; 101; 201)의 연색성(color rendition)을 최적화하기 위해서 상기 발광 다이오드(6, 6', …; 106, 106', …; 206, 207) 중 하나에 의해 방출되는 가시광선의 일부분을 다른 파장 범위의 가시광선으로 변환시키는 변환 수단(10; 110; 210)을 포함하는조명 시스템.
- 제 1 항에 있어서,상기 변환 수단(10; 110; 210)은 발광 물질(luminescent material)을 포함하는 조명 시스템.
- 제 2 항에 있어서,상기 발광 물질은 400㎚ 내지 500㎚의 파장 범위로 생성되는 광에 의해 여기(excited)될 수 있는 조명 시스템.
- 제 2 항에 있어서,상기 발광 물질은 (Sr,Ca)2SiO4:Eu2+, Ba2SiO4:Eu2+, SrGa2S4, ZnS:Cu+, ZnS:Au+, ZnS:Al3+, (Zn,Cd)S:Ag+ 및 CaS:Ce3+로 이루어지는 그룹으로부터 선택되는 조명 시스템.
- 제 1 항에 있어서,상기 2개의 발광 다이오드(6, 6', …, 7, 7', …; 106, 106', …, 107, 107', …; 206, 207)는 적어도 하나의 청색 발광 다이오드(6, 6', …; 106, 106', …)와 적어도 하나의 적색 발광 다이오드(7, 7', …; 107, 107', …)를 포함하고,상기 변환 수단(10; 110)은 상기 청색 발광 다이오드(6, 6', …; 106, 106', …)에 의해 방출되는 광의 일부분을 녹색광으로 변환시키는 발광 물질을 포함하는 조명 시스템.
- 제 5 항에 있어서,상기 청색 발광 다이오드(6, 6', …; 106, 106', …)의 스펙트럼 방출의 최대치는 460㎚ 내지 490㎚의 파장 범위 내에 있고,상기 적색 발광 다이오드(7, 7', …; 107, 107', …)의 스펙트럼 방출의 최대치는 610㎚ 내지 630㎚의 파장 범위 내에 있으며,상기 녹색 발광 물질(the green light-emitting luminescent material)의 스펙트럼 방출의 최대치는 510㎚ 내지 530㎚의 파장 범위 내에 있는 조명 시스템.
- 제 2 항에 있어서,상기 발광 물질은 500㎚ 내지 560㎚의 파장 범위로 생성되는 광에 의해 여기될 수 있는 조명 시스템.
- 제 7 항에 있어서,상기 발광 물질은 CaS:Eu,Mn; CaS:Eu; SrS:Eu; (Zn,Cd)S:Ag; SrO:Eu; Sr3B2O6:Eu; Sr2Mg(BO3)2; Cas:Eu,Mn; CaS:Eu 또는 SrS:Eu 으로 형성되는 군으로부터 선택되는 것을 특징으로 하는 조명 시스템.
- 제 1 항에 있어서,상기 2개의 발광 다이오드(206, 207)는 적어도 하나의 청색 발광 다이오드(206) 및 적어도 하나의 녹색 발광 다이오드를 포함하고,상기 변환 수단(210)은 적어도 상기 청색 또는 녹색 발광 다이오드(206, 207)에 의해 방출되는 광의 일부분을 적색광으로 변환시키는 발광 물질을 포함하는 조명 시스템.
- 제 9 항에 있어서,상기 청색 발광 다이오드(206)의 스펙트럼 방출의 최대치는 460㎚ 내지 490㎚의 파장 범위 내에 있고,상기 녹색 발광 다이오드(207)의 스펙트럼 방출의 최대치는 510㎚ 내지 550㎚의 파장 범위 내에 있으며,상기 적색 발광 물질(the red light-emitting luminescent material)의 스펙트럼 방출의 최대치는 610㎚ 내지 630㎚의 파장 범위 내에 있는 조명 시스템.
- 제 1 항 또는 제 2 항에 있어서,상기 조명 시스템(1; 101; 201)의 연색 지수(color rendering index)는 적어도 80과 같거나 큰 값을 갖는 조명 시스템.
- 제 1 항 또는 제 2 항에 있어서,작동 중에, 상기 발광 다이오드(6, 6', …, 7, 7', …; 106, 106', …, 107, 107', …; 206, 207)의 광 플럭스(luminous flux)는 적어도 5 lm인 조명 시스템.
- 제 1 항 또는 제 2 항에 있어서,반사 수단(9; 109; 209)을 구비하는 조명 시스템.
- 제 13 항에 있어서,상기 반사 수단(9; 109; 209)은 BaSO4, ZnS, ZnO 및 TiO2로 이루어지는 그룹으로부터 선택되는 물질을 포함하는 조명 시스템.
- 제 13 항에 있어서,상기 변환 수단(10; 110; 210)은 반사 수단(9; 109; 209) 내부 또는 상부에 제공되는 조명 시스템.
- 제 1 항 또는 제 2 항에 있어서,상기 조명 시스템(1; 101; 201)의 색 온도(color temperature)는 상기 발광 다이오드(6, 6', …, 7, 7', …; 8, 8', …; 106, 106', …, 107, 107', …; 108, 108', …; 206, 207)를 개별적으로 구동함으로써 조정될 수 있는 조명 시스템.
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EP98203247 | 1998-09-28 | ||
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EP (1) | EP1046196B9 (ko) |
JP (1) | JP4366016B2 (ko) |
KR (1) | KR100702273B1 (ko) |
CN (1) | CN1227749C (ko) |
DE (1) | DE69937993C5 (ko) |
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US5851063A (en) | 1996-10-28 | 1998-12-22 | General Electric Company | Light-emitting diode white light source |
US5795798A (en) † | 1996-11-27 | 1998-08-18 | The Regents Of The University Of California | Method of making full color monolithic gan based leds |
JPH10170341A (ja) † | 1996-12-11 | 1998-06-26 | Idec Izumi Corp | 色検出装置の照明装置 |
DE19756360A1 (de) * | 1997-03-03 | 1998-09-10 | Philips Patentverwaltung | Weisse Lumineszenzdiode |
US5850126A (en) * | 1997-04-11 | 1998-12-15 | Kanbar; Maurice S. | Screw-in led lamp |
JPH1139917A (ja) † | 1997-07-22 | 1999-02-12 | Hewlett Packard Co <Hp> | 高演色性光源 |
US6068383A (en) * | 1998-03-02 | 2000-05-30 | Robertson; Roger | Phosphorous fluorescent light assembly excited by light emitting diodes |
DE29820384U1 (de) * | 1998-11-06 | 1999-01-14 | Opto-System GmbH, 12555 Berlin | Leucht- oder Anzeigeelement mit mischfarbigen, insbesondere weißem Licht |
-
1999
- 1999-09-17 CN CNB99802435XA patent/CN1227749C/zh not_active Expired - Lifetime
- 1999-09-17 KR KR1020007005691A patent/KR100702273B1/ko active IP Right Grant
- 1999-09-17 WO PCT/EP1999/007015 patent/WO2000019546A1/en active IP Right Grant
- 1999-09-17 ES ES99948820T patent/ES2299260T5/es not_active Expired - Lifetime
- 1999-09-17 DE DE69937993.8T patent/DE69937993C5/de not_active Expired - Lifetime
- 1999-09-17 EP EP99948820A patent/EP1046196B9/en not_active Expired - Lifetime
- 1999-09-17 JP JP2000572951A patent/JP4366016B2/ja not_active Expired - Lifetime
- 1999-09-24 US US09/406,284 patent/US6234648B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1046196B1 (en) | 2008-01-16 |
DE69937993T3 (de) | 2012-01-19 |
KR20010032450A (ko) | 2001-04-25 |
JP4366016B2 (ja) | 2009-11-18 |
US6234648B1 (en) | 2001-05-22 |
CN1227749C (zh) | 2005-11-16 |
EP1046196B9 (en) | 2013-01-09 |
ES2299260T3 (es) | 2008-05-16 |
DE69937993C5 (de) | 2019-01-10 |
CN1289454A (zh) | 2001-03-28 |
WO2000019546A1 (en) | 2000-04-06 |
DE69937993D1 (de) | 2008-03-06 |
ES2299260T5 (es) | 2011-12-20 |
EP1046196B2 (en) | 2011-07-27 |
JP2003529889A (ja) | 2003-10-07 |
DE69937993T2 (de) | 2008-12-24 |
EP1046196A1 (en) | 2000-10-25 |
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