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《Research & Progress of SSE Solid State Electronics》 2007-04
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The Color Matching of White LED Based on Two Single Color LEDs

ZHANG Lei GUO Xia SHEN Guangdi LIU Shiwen LIANG Ting WANG Hui (Opto-electronic Technology Laboratory,Beijing University of Technology,Beijing,100022,CHN)  
According to colorimetry,the matching principle of white LED based on two pri- mary color LEDs is introduced;Using color matching calculation,the coverage of the primary color LED's chromaticity coordinate and the coverage of the ratio of the primary LED are deter- mined.Luminous efficacy and color rendering of white LED based on two color LEDs are dis- cussed and analyzed.White LEDs based on two primary color LEDs have the maximal luminous efficacy,but their color rendering are very poor.white LEDs based on primary LEDs with domi- nant wavelengths about 450 nm and 572 nm have the maximal k,400 lm/W,which is approaching the theoretic maximum of equality energy white point.White LEDs with dominant wavelengths about 480 nm and 580 nm have the maximal Ra,16.2.
【Fund】: 国家“863”计划(批准号:2004AA311030);; 十五国家科技攻关项目(批准号:2003BA316A01-01-08);; 国家自然科学基金(批准号:60506012);; 北京市科委重点项目(批准号:D0404003040221);; 北京市教委项目(批准号:kz200510005003)
【CateGory Index】: TN312.8
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