LED Luminaire LM79 reports is a procedure of photometric testing

LM-79 is a procedure of photometric testing for LED luminaires. It’s an IESNA document that the photometric laboratories must follow to test the LED luminaires. Basically it tells you how the luminaire must be tested and what information must be included in the photometric report.

A photometric report according to LM-79 will contain the luminaire’s photometric data (lumens, vertical distribution of the lumens, color temperature…) and electric data (power, current)

LM-79 does not certify the veracity of the data of a photometric report. The fact that the report is produced by an independent laboratory proves that the data is truthful.

LM-79 is an electrical and photometric test of LED luminaires. Measurements include: total flux (light output), electrical power (wattage), lumens per watt (efficacy), and chromaticity.