TM-21-21, Projecting Long-Term Luminous, Photon, and Radiant Flux Maintenance of LED Light Sources

IES Logo

March 2, 2022

In 2011, The IES published TM-21 “Projecting Long Term Lumen Maintenance of LED Light Sources.”  This method was quickly adopted globally for projecting lumen maintenance of Solid-State Lighting sources.  In 2021 the IES Test Procedures Committee (TPC) revised this document to expand its scope in terms of the types of flux maintenance and also to include interpolation between different drive currents. 

With the publication of ANSI/IES TM-21-21, the IES will also be launching a web-based calculation tool for projecting flux maintenance.  Join us for this educational session on TM-21 to learn about the revisions and reasons behind the revisions as well as an introduction to the web-based calculation tool.  

Speaker:Eric Bretschneider

Go HERE to register

Related Articles

Changing Scene

Design

  • Eralux: Curling Club Lighting Project Highlight

    Eralux: Curling Club Lighting Project Highlight

    This installation exemplifies the versatility of Eralux Titan Elite, enabling the Curling club to cater to various needs such as general play, broadcast, and ice maintenance. The individual control of fixtures offers the flexibility to optimize ice coverage effectively. Moreover, the Eralux Titan Elite high bay, featuring rotating lenses, illuminates all areas, including dark corners,… Read More…

  • Artika: Outdoor Wall Lighting Ideas – Security, Style & Curb Appeal

    Artika: Outdoor Wall Lighting Ideas – Security, Style & Curb Appeal

    Strategic outdoor wall lighting combines bright entry fixtures (700-1,000 lumens) at doors, accent sconces highlighting architectural features, and porch lighting that creates welcoming curb appeal while deterring intruders and ensuring safe navigation. Your home’s exterior walls offer the perfect canvas for lighting that serves multiple purposes simultaneously. Well-positioned outdoor wall lights provide security at vulnerable… Read More…

New Products

  • Cooper Lighting: WaveLinx LITE Contact Closure Input (CCI-L-V)

    Cooper Lighting: WaveLinx LITE Contact Closure Input (CCI-L-V)

    The WaveLinx LITE Contact Closure Input (CCI-L-V) is a WaveLinx LITE device that provides the ability to take inputs from other devices, like fire alarm panels, keyed switches, or other devices, incorporating momentary or maintain actions to allow the system to respond to demand response, alert mode, after hours occupancy or a sensor input. Read More…

  • Signify: Philips Smart Lighting Turns the Home into an Experience

    Signify: Philips Smart Lighting Turns the Home into an Experience

    Lighting is stepping out of the background and into the spotlight as Philips Smart Lighting expands its Wi-Fi-based smart lighting portfolio. The new products are designed to help people shape spaces that reflect their mood, personality and lifestyle through lighting that adapts effortlessly to every moment. Building on its existing range of smart bulbs and… Read More…