LED模拟太阳光研究

20152261ZHAOMINGGONGCHENGXUEBAOFeb．2015Vol.26No.1LED200433LED。7LED。。LEDTM923ADOI10.3969j.issn.1004-440X.2015.01.015TheStudyonSimulatingSunlightwithLEDGaoWeixiNiKaikaiLiZewenLiuMuqingInstituteforElectricLightSourcesEngineeringＲesearchCenterofAdvancedLightingTechnologyMinistryofEducationFudanUniversityShanghai200433ChinaAbstractThearticlemainlystudiestheLEDspectralmatchingalgorithm．Basedonthebasicmathematicalmodelofrealizedspectrum7colorLEDswithdifferentcentralwavelengthanddistributionsareusedtomimicthespectraldistributionsofsolarspectrumsatdifferenttimeofadaymatchingtosimulatesunlightatdifferenttimes．Bycalculationitmeetsthedifferentmomentsofsunlightcolortemperaturerequirementsandatthesametimeensuresahighcolorrenderingindex．KeywordsLEDsolarspectrumrenderingindexLEDLED。LED380nm～780nm。LEDLED。LED1。LEDLED。LEDD65、、5500K2－3。LED。LED7LED。LEDLED。1LED1.1LED261LED81LED1λ0。ΔλLEDLED。1LEDFig.1MonochromaticLEDspectraldistributioncurve1LEDLEDLEDLED。LED。LED。。1LED。2。2。1LED。2LEDFig.2LED’simprovedGaussiandistributionmodelandactualspectraldistributionSλreal=A×exp－0.8498λ－λ0Δ()λ[]2+2×exp－0.8498×λ－λ0Δ()λ()[]2531LEDLEDLEDLED2。Smixλ=∑Ai×Siλreal=∑Ai×exp－0.8498λ－λ0Δ()λ[]2+2×exp－0.8498×λ－λ0Δ()λ[]{}25322SmixλLED27LEDMATLAB。1.21。1Table1Daysunlightcolortemperatureofdifferenttime/K/2000/20～302500/453000/13500/1.54000/24500/2.55000/35500650082201527LED。152500K、3500K、4000K、5000K、6500K。。CIECIE1931xy。CIE19314000～40000K。2500K3500K7LED4。4000K、5000K、6500K3。Sλ=S0λ+M1S1λ+M2S2λ33SλS0λ。S1λS2λλ、。M1M25。2LED7LED450nm500nm550nm600nm650nm700nm750nm。LED35nm35nm40nm20nm20nm20nm20nm。LED。7LED2～6。2LED2500KTable2LEDsimulation2500Ksunlight2500.80K90.6LED/nm/nm450350.13500350.13550400.31600200.81650201.00700200.94750200.563LED3500KTable3LEDsimulation3500Ksunlight3496.09K90.9LED/nm/nm450350.29500350.29550400.35600200.76650201.00700200.88750200.534LED4000KTable4LEDsimulation4000Ksunlight3998.68K90.4LED/nm/nm450350.38500350.41550400.41600200.84650201.00700200.94750200.565LED5000KTable5LEDsimulation5000Ksunlight5008.71K95.8LED/nm/nm450350.53500350.60550400.60600200.93650200.97700201.00750200.606LED6500KTable6LEDsimulation6500Ksunlight6504.06K93.6LED/nm/nm450350.92500350.83550400.83600201.00650201.00700200.92750200.884000K、5000K、6500K。7LED3、4、5。261LED8337LED4000KFig.37LEDswiththetypicalsolarspectralfittingof4000K47LED5000KFig.47LEDswiththetypicalsolarspectralfittingof5000K57LED6500KFig.57LEDswiththetypicalsolarspectralfittingof6500K37LED。4000K5000K6500KLED。LED6－7。7LED。1．M．2009411．2．LEDJ．201223151-57.3．AmodelforLEDspectraatdifferentdrivecurrentsJ．ChineseOpticsLetters201081094．4．M．2007.5JungChiehSuChunLinLu．Colortemperaturetunablewhitelightemittingdiodespackagedwithanomni-directionalreflectorJ．OpticalSocietyofAmerica20091721409．6．LEDSPDJ．201425478-84.7．LEDJ．201223461-64．