资源描述：
《Design of a novel freeform lens for LED uniform》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、DesignofanovelfreeformlensforLEDuniformilluminationandconformalphosphorcoating1,21,2,*1,2332RunHu,XiaobingLuo,HuaiZheng,ZongQin,ZhiqiangGan,BulongWu,and1,4ShengLiu1WuhanNationalLaboratoryforOptoelectronics,HuazhongUniversityofScienceandTechnology,Wuhan,430074,C
2、hina2SchoolofEnergyandPowerEngineering,HuazhongUniversityofScienceandTechnology,Wuhan,430074,China3SchoolofOptoelectronicScienceandEngineering,HuazhongUniversityofScienceandTechnology,Wuhan,430074,China4SchoolofMechanicalScienceandEngineering,HuazhongUniversity
3、ofScience&Technology,Wuhan,430074,China*luoxb@mail.hust.edu.cnAbstract:Aconformalphosphorcoatingcanrealizeaphosphorlayerwithuniformthickness,whichcouldenhancetheangularcoloruniformity(ACU)oflight-emittingdiode(LED)packaging.Inthisstudy,anovelfreeformlenswasdesi
4、gnedforsimultaneousrealizationofLEDuniformilluminationandconformalphosphorcoating.Thedetailedalgorithmofthedesignmethod,whichinvolvesanextendedlightsourceanddoublerefractions,waspresented.ThepackagingconfigurationoftheLEDmodulesandthemodelingofthelight-conversi
5、onprocesswerealsopresented.MonteCarloray-tracingsimulationswereconductedtovalidatethedesignmethodbycomparisonswithaconventionalfreeformlens.ItisdemonstratedthatfortheLEDmodulewiththepresentfreeformlens,theilluminationuniformityandACUwas0.89and0.9283,respectivel
6、y.Thepresentfreeformlenscanrealizeequivalentilluminationuniformity,buttheangularcoloruniformitycanbeenhancedby282.3%whencomparedwiththeconventionalfreeformlens.©2012OpticalSocietyofAmericaOCIScodes:(230.3670)Light-emittingdiodes;(220.3630)Lenses;(220.2945)Illum
7、inationdesign;(350.4600)Opticalengineering.Referencesandlinks1.S.Pimputkar,J.S.Speck,S.P.Denbaars,andS.Nakamura,“ProspectsforLEDlighting,”Nat.Photonics3(4),180–182(2009).2.E.F.SchubertandJ.K.Kim,“Solid-statelightsourcesgettingsmart,”Science308(5726),1274–1278(2
8、005).3.S.Tonzani,“Lightingtechnology:Timetochangethebulb,”Nature459(7245),312–314(2009).4.Z.Y.Liu,S.Liu,K.Wang,andX.B.Luo,“Statusandprospectsforphosphor-basedwhiteLEDpackagi
