
In many applications — such as retail and museum lighting — a characterization of anticipated chromaticity shift of SSL products over their usable lifetime is critical to long-term lighting quality. Chromaticity coordinates of some light sources can change significantly from their initial values over time.
ANSI/IES TM¬35¬19 R25Technical Memorandum: Projecting Long-Term Chromaticity Coordinate Shift of LED Packages, Arrays, and Modules recommends a method of projecting the shift in chromaticity coordinates of LED packages, arrays, and modules using data obtained during LM-80 testing.
This webinar will introduce a new IES tool developed by the IES Testing Procedures Committee which can be used by designers and manufacturers to project this shift.

• Free registration for members / $29 for Non-Members
• Registration for this event ends on Thursday, February 5, 2026 at 12:00 PM (ET)
• Participants will receive one (1) IES continuing education credits (CEUs).
PRESENTERS
Jonathan C. Vollers is Lighting Certified and holds a Bachelor of Science in Mechanical Engineering as well as a Master of Business Administration. He spent 15 years in the aerospace industry before transitioning to the lighting field in 2012. Since then, he has led efforts across photometry and reliability labs, electrical and mechanical prototyping, safety compliance, and performance validation for Cree Lighting’s solid-state LED lamps and luminaires. His work ensures compliance with ENERGY STAR®, DesignLights Consortium®, Dark Sky International, California Energy Commission Title 20 and Title 24, and many other regulatory standards. In addition to his technical leadership, Jonathan actively contributes to the advancement of the lighting industry by presenting on key industry topics, and supports several professional organizations; including the NEMA Lighting Sections, the IES Testing Procedures Committee, and the NCQLP Test Examination Committee—all while continuing his impactful work at Cree Lighting.
Eric Bretschneider has over 25 years of experience developing technology related to high brightness LEDs. He is a noted expert in many fields including: LED package design, phosphors, LED measurement/reliability and IP matters. He holds 30 US patents related to LED technology. Eric is CTO of EB Designs & Technologies and a member of the IES Testing Procedures Committee.