A new metric to quantify the naturalness of light: Page 2 of 2

May 14, 2020 //By Julien Happich
naturalness
Bridgelux has developed a new metric to enable objective comparisons of light sources to natural light. With the growing market interest in human-centric lighting, the question of "naturalness" of light source spectra is becoming a frequently asked question.

The Bridgelux Thrive LED light source family has been engineered to provide the closest match to natural light available in the market.  The ASD values for standard light sources are much larger compared to Thrive, including that of the 98 CRI light source. While TM-30 and CRI are important color quality metrics, having high values does not necessarily correspond to high naturalness of the light source, whereas having very low ASD values always corresponds to high naturalness.

"The market is evolving to human-centric lighting," comments Brian Cumpston, VP Solutions Development of Bridgelux. "While there are several approaches to developing human-centric lighting solutions, delivering the closest match to natural light is of great interest to our customers. Thrive has been developed to address this demand, and the new ASD metric developed by Bridgelux provides an objective and quantitative way to compare light sources and determine how closely they match the spectra of natural light.  We hope this new metric will be broadly adopted in the lighting industry to provide new insight into naturalness beyond CRI and TM-30."
Bridgelux - www.bridgelux.com

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