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Wednesday, August 26 • 3:30pm - 4:00pm
Improved System for Evaluating and Specifying the Chromaticity of Light Sources

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This presentation will discuss a proposal to update the way chromaticity and its derivatives, like CCT and Duv, are calculated, modernizing the framework to better account for metameric mismatch and improve the performance of architectural lighting systems. The proposal includes employing the CIE 2015 10° color matching functions (CMFs) to create a new uniform chromaticity scale (UCS) diagram (s, t), adjusted measures for white light quantification (CCTst and Dst), and redefined nominal classification quadrangles. The presentation will demonstrate how these changes improve average matches for the color appearance of light. It will also cover how the characterizations of products would change if the improved system is implemented and recommended for use.

avatar for Michael Royer

Michael Royer

Senior Engineer, Pacific Northwest National Laboratory
Dr. Michael Royer is a senior engineer at the Pacific Northwest National Laboratory (PNNL), where he works on the Advanced Lighting Science and Technology Research program, sponsored by the U.S. Department of Energy. His primary research area is human factors in lighting. He conducts... Read More →

Wednesday August 26, 2020 3:30pm - 4:00pm EDT