luminaire classification

luminaire classification

1. For indoor luminaires, a classification system based on the percentage of flux which is emitted by the luminaire, above (or below) a horizontal plane through the center of the luminaire.
2. Floodlights: a measure of the beam spread in terms of beam angle ranges: type I, beam angle 10° to 18°; II, 18° to 29°; III, 29° to 46°; IV, 46° to 70°; V, 70° to 100°; and VI, above 100°.
References in periodicals archive ?
Both methods rely on the Backlight, Uplight, and Glare (BUG) rating system as described in IES TM-15-11, Luminaire Classification System for Outdoor Luminaires [IESNA 2011].
Paul Lutkevich (Illuminating Engineering Society of North America) discussed a new luminaire classification being developed by IESNA that will gauge roadway lighting fixtures more accurately in terms of light trespass, skyglow, and glare.
IES TM-15-07 established the Luminaire Classification System (LCS) [IES 2007].
A MLOTF subgroup was formed specifically to provide the technical analysis of the new luminaire classification system.