Evaluation of efficacy of light sources combined of different color LEDs

This paper deals with the assessment and comparison of efficacy and colorimetric parameters of white light sources combined of different color LEDs. The main attention is paid to light sources made of separate red, green, blue and red, amber, green, blue LEDs in comparison with white LEDs. Theoretical calculations are compared with obtained experimental data. Proportions of necessary color LED number and intensities are calculated to obtain different blackbody radiator color temperatures and efficacy at these points.