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About This Item


Full Description

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. A detailed evaluation of the lighting performance for the outdoor site should be based not only on the luminaire optics, but also on overall system design, including luminaire locations, utilization of light where it is needed, lighting quality, visual tasks, aesthetics, safety requirements, and security issues.

Document History

  1. IES TM-15-11


    Luminaire Classification System for Outdoor Luminaires

    • Most Recent
  2. IES TM-15-07

    Luminaire Classification System for Outdoor Luminaires, Includes Addendum A (2009)

    • Historical Version