IES LM-79-08 Standard Test for Electrical and Photometric Measurements of Solid State Lighting Products

With its state-of-the-art accredited laboratories and expert team, EUROLAB provides precise and fast testing services within the scope of IES LM-79-08 testing. IES LM-79-08 is the North American Society of Lighting Engineers (IESNA) approved test method for Electrical and Photometric Measurements of Solid State Lighting Products.

With the LM-79-08 measurements, the total luminous flux (lumen), electrical power (W), luminous intensity distribution, luminous efficiency (lm/W) and color characteristics (CRI, CCT) of the light source are extracted. LM-79-08 is applied to LED-based lighting devices containing control electronics (driver) and cooler. In the LM-79-08 test, the LED luminaire or the LED lamp is measured as a whole. Sphere and goniophotometer are used for LM-79-08 measurements.

In LED luminaires, it is generally not allowed to remove the LED part by the user. On the other hand, serious performance drops can occur when LED light sources are not supported with a heatsink. For these reasons, LED light source luminaires are evaluated as a whole during the test process. This measurement method is called absolute photometry.

Relative photometry is used in conventional lighting fixtures. In this method, lamp and lighting fixture (with reference lamp) are measured separately. Then, the results are combined and the actual light distribution and intensity of the luminaire is deduced.

EUROLAB assists manufacturers with IES LM-79-08 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.