Quantitative analysis of color combination from LED and laser light sources using modified CIE 1931 color space coordinates

Abstract

In this study, a quantitative analysis was conducted based on the CIE 1931 color space to determine a number of color combinations of three LED (light emitting diode) light sources and three laser sources respectively. The light sources used in this research were three LEDs that emitted blue, green and red light, and three laser sources that also emitted blue, green and red light. The results of the color combinations of these light sources were captured using a spectrophotometer. The obtained light spectra were then analyzed using a set of color matching functions that was modified specially for the spectrophotometer used. This research produced a quantitative analysis of 26 color combinations from LED light sources and 7 color combinations from laser light sources. The results of the color combinations ranged from blue, cyan, yellow, orange and red to purple. Further development of the proposed method is still required to obtain more reliable quantitative analysis results.