단색(R, G, B, A)과 백색 LED 광색혼합에 의한 연색지수 및 R9 향상에 관한 연구

The aim of this paper is to find high R9 value at high color rendering index by mixing the color of monochromatic LED (R, G, B, A) and white LED. High R9 values at high color rendering index were found to reduce the color difference from the reference color checker through CIE L*a*b* measurement.