IES TM-35-19 PDF Download

The IES TM-35-19 standard addresses the need to understand the long-term stability of chromaticity coordinates in LED light sources. It acknowledges that certain applications, such as retail and museum lighting, require accurate characterization of chromaticity shift over the usable lifetime of the products.

The standard recommends using data obtained from the ANSI/IES LM-80-15 standard, which provides a method for measuring luminous flux and color maintenance of LED packages, arrays, and modules. By utilizing the data obtained from LM-80-15, the TM-35-19 standard enables the projection of long-term chromaticity coordinate stability of LED light sources.