A system for evaluating the color rendition of light sources was recently published as IES TM-30-15 IES Method for Evaluating Light Source Color Rendition. The system includes a fidelity index (Rf) to quantify similarity to a reference illuminant, a relative-gamut index (Rg) to quantify saturation relative to a reference illuminant, and a color vector icon that visually presents information about color rendition. The calculation employs CAM02-UCS and uses a newly-developed set of reflectance functions, comprising 99 color evaluation samples (CES). The CES were down-selected from 105,000 real object samples and are uniformly distributed in color space (fairly representing different colors) and wavelength space (avoiding artificial increase of color rendition values by selective optimization).
Revised: January 21, 2016 |
Published: November 30, 2015
Citation
Houser K.W., M.P. Royer, and A. David. 2015.Evaluating Light Source Color Rendition using the IES TM-30-15 Method. In 5th Professional Lighting Design Conference (PLDC 2015), October 28-31, 2015, Rome, Italy. Gütersloh:VIA-Verlag.PNNL-SA-111641.