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ANSI/IES TM-15-20

Technical Memorandum: Luminaire Classification System for Outdoor Luminaires

This Technical Memorandum defines a classification system for outdoor luminaires that provides informa­tion to lighting professionals regarding the lumen distribution within solid angles of specific interest. The lumens within these solid angles are intended to be one of the metrics used to evaluate luminaire optical distribution, including the potential for light pollution and obtrusive light, but not as the only met­ric that should be evaluated. Light pollution and obtrusive light result not only from the optical char­acteristics of the luminaires, but also from the appli­cation of those luminaires within an outdoor site or roadway.

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Illuminating Engineering Society of North America [iesna]

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