LM-79 Performance Testing of Lamps and Luminaries (On-Demand)


This 60-minute on-demand webinar provides an overview of how UL supports the performance testing of lamps and luminaires using photometric testing. During the first part of the webinar, we will discuss the types of goniophotometers and the differences between relative and absolute photometry.  Then, we will review different types of photometric data and finally we discuss Energy Star Requirements.

About the presenter:  Michael Grather, UL's Primary Designated Engineer for Lighting Performance brings over 15 years of engineering experience to the lighting industry. Prior to joining UL in 2009, Michael was the President of Luminaire Testing Laboratory, Inc. for 12 years. For the past 12 years, Michael has been serving on the Testing Procedures Committee of the IES with 5 years as chairman. Michael holds a BSEE from Penn State University.


Webinar Topics:

  • Types of goniophotometers
  • Relative photometry
    • Including comparisons of relative versus absolute photometry
  • Stabilization of LED luminaires
  • Energy star requirements


  • List the types of goniophotometers
  • Describe the difference between relative and absolute photometry
  • Describe the Energy Star Requirements for solid state lighting (SSL) luminaires

Target Audience

  • Luminaire manufacturers
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Time Requirement


Web-Based 90 minutes $49.00

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