With overseas competition, major LED manufacturers are increasing their focus on higher-margin products. These range from Internet of Things (IoT) interfaces to health informatics. One other area where they see possibilities is in light quality of luminaires, especially as it relates to the improvement of working conditions. But many say that it’s not quite ready for primetime.

That’s not to say that there isn’t promise, of course. There is a growing body of research and studies indicating that blue shifts and higher correlated color temperature (CCT) help increase alertness and productivity. Conversely, a red shift or lower color temperature may help reinforce the body’s circadian rhythms and aid nighttime relaxation.

Research noted by NanoLumens CTO Gary Feather argues for a color rendition index above 90 and an even higher R9 value for luminaires. “There are spatial and temporal impacts, which is why every lighting company is researching them,” he says.

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