ITL is ISO17025 accredited by the National Voluntary Laboratory Accreditation Program (NVLAP) to perform IES LM-82 testing

The Illuminating Engineering Society of North America (IESNA) Approved Method for the Characterization of LED Light Engines and LED Lamps for Electrical and Photometric Properties as a Function of Temperature (LM-82-12) is a document which addresses the changes in photometric performance of SSL light engines and lamps with changes in temperature.

In recent times the term "LM-82 testing" has become part our lighting lexicon and has been treated in some cases as a lighting program all its own. While many lighting programs reference LM-82 procedures, it is not in and of itself a lighting program with specified requirements and pass/fail criteria.

With the advent of the LED being used for more and more lighting industry categories and general illumination, more need has arisen to determine how various light engines and integrated lamps would operate in any given light fixture configuration. With form factors varying from miniaturized recessed downlights to large multi-panel floods, there is increased need to understand the photometric performance of these sources in an array of thermal environments which simulate those form factors and intended environments.

This test method provides photometric performance results (lumens and color) at various elevated ambient temperatures which allow fixture manufacturers to evaluate light engines and lamps and to determine which ones are best suited to the thermal signature of their particular luminaire model. By thermally bracketing the photometric performance of LED light engines and integrated lamps, the designer is able to determine what internal specifications need to be met, including heat sinking properties for optimal performance.

If you would like to know more about LM-82 testing and associated applications please give us a call at 303-442-1255. We would be happy to discuss your LM-82 testing needs.