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Beyond the inherent energy efficiency of LEDs, tunable LED luminaires offer other potential benefits including more flexibility and higher occupant satisfaction, and researchers are exploring the possibility of improved well-being, alertness, and mood. At this point, however, it is important to understand the potential tradeoffs, limitations, and issues surrounding this emerging product category, so that the industry can work together to address challenges needing attention as these products mature. DOE evaluation of color-tunable products demonstrates the variety of approaches that different manufacturers use to achieve color tuning, and highlights the challenges involved in testingcontrolling, and specifying color-tunable products.

Photometric Testing of White Tunable LED Luminaires (August 2015; Addendum 1, January 2016; Addendum 2, August 2018)


Understanding LED Color-Tunable Products
To understand variations in color-tunable products, consider product types in terms of common applications, control options, and potential issues.
Controlling LED Color-Tunable Products
Controlling color-tunable luminaires can be challenging for specifiers, since different manufacturers use different approaches.
Specifying LED Color-Tunable Products
Specifying LED color-tunable luminaires is dependent on being able to make accurate comparisons between products.
Testing LED Color-Tunable Products
New product capabilities and performance variables require new test methods to be developed, to enable accurate comparisons.