【摘要】 从色度学原理出发,简述了两基色白光LED的配色原理,确定了可合成白光的两基色的选取范围和两基色的配比范围,计算分析了两基色白光LED的光视效能和一般显色指数。两基色白光LED具有较高的光视效能,但其显色性却较差,主波长为450 nm左右的蓝光LED与主波长572 nm左右的黄绿光混合得到的白光的光视效能值最大,约为400 lm/w,已接近等能纯白点的理论极值,但一般显色指数只有—0.5。主波长为480 nm左右的LED与主波长为580 nm左右的LED混合得到的白光的一般显色指数值最大,仅为16.2。更多还原

【Abstract】 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.更多还原