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Integrating sphere at the PNNL Lighting Metrology Lab.
In collaboration with the Illuminating Engineering Society (IES) and other standards organizations, DOE has been instrumental in defining new standards for photometric testing of SSL lamps and luminaires. In particular, early work by the CALiPER program helped to inform the development of IES LM-79. This foundational document describes the conditions and procedure for photometric testing of SSL lamps and luminaires.

More recently, DOE has focused on photometric testing of LED color-tunable products, which present a unique challenge for established methods of characterizing lighting performance because their output is continuously variable. In 2018, an Addendum expanded the luminaire testing results contained in the 2015 report on Photometric Testing of White-Tunable Luminaires. This report provided data that subsequently informed a working group of the IES Testing Procedures Committee. A draft Technical Memorandum describing recommended additional steps to the LM-79 test method to accommodate white-tunable luminaires is currently being balloted.