IES BUG Ratings - Evaluating Performance

The Illuminating Engineering Society of North America (IESNA) new Backlight, Uplight, Glare or BUG standard of measurement provides improved performance descriptions and measurement for LED luminaires. This TM-15 Luminaire Classification System (LCS) for Outdoor Luminaires classifies luminaire photometric performance related to light trespass, sky glow, and high angle brightness control.

All BetaLED products are International Dark-Sky Association (IDA) approved and are measured for performance using IESNA standards and guidelines including the IES BUG rating system which supersedes the former cut-off classification system.

View Addendum A to TM-15-11: Backlight, Uplight, and Glare (BUG) Ratings.

View Cutoff Classifications LED Luminaires

For more information, purchase TM-15-11: Luminaire Classification System for Outdoor Luminaires from the IESNA.