Considerations in LED spectral design for enhanced color quality

With the development of LED technology, spectral tuning and spectral engineering are becoming more and more popular. The spectra are generally engineered to enhance the visual or non-visual response introduced by optical radiation. Color quality, an important component of lighting quality, attracts considerable attention of the LED manufacturers. This paper reports two hypothesis-driven psychophysical studies which were conducted in full-scaled rooms, revealing the important considerations for LED spectral engineering.