【Abstract】 The most important background of white LED is "green lighting source".The color coordinate and color index are very important for lighting source.In this paper,the color coordinate and color index of white light emitting diode are shown.The average value of color coordinate X,Y are 0.31 and 0.33,respectivily;the maximum value are 0.32,0.35;the minimum value are 0.29,0.29.The average value of color index is 80;the maximum is 83;the minimum is 78.更多还原