Spectral resolution in colour rendering assessments and LED lighting

The colour rendering properties of LED domestic lighting solutions were assessed. The majority of the sample were white LEDs emitting partially phosphor-converted blue LED light. Compact fluorescent (CFL), incandescent, and tungsten-halogen (TH) lamps were included for comparison. In addition to familiar fidelity and gamut metrics, an often neglected third class of metric which evaluates spectral richness for colour rendering was examined, and used as a tool to consider the importance of spectral resolution in colour rendering.