Evaluating Light Source Color Rendition using the IES TM-30-15 Method
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).
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- Conference: 5th Professional Lighting Design Conference (PLDC 2015), October 28-31, 2015, Rome, Italy
- VIA-Verlag, Gütersloh, Germany.
- Research Org:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
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- Country of Publication:
- United States
- TM-30; color rendition; color quality; LEDs; color rendering; CRI; color fidelity; color gamut