The impact of energy-saving light chromaticity measurement caused by different spectral scan intervals

The impact of spectral scan intervals on the chromaticity measurement and the quality analysis of energy-saving lamps has been researched.An integrating sphere and spectrometer system with the spectral scan interval of Inm and 5nm was employed to measure the spectrum,color temperatures,rendering indexes and chromaticity coordinates of light sources relatively.Results show that the spectrum differs significantly at the peak near 610nm with the measuring condition of Inm and 5nm scan intervals,all the color temperatures measured by Inm spectral scan interval are larger than that of 5nm,while all the rendering indexes are smaller.TheΔT_(cmax) is 41K andΔR_(a max) is 0.5.An optimal method of measuring the color of light sources is proposed based on this research.