Measuring Etendue of LED sources

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SUMMARY

The discussion focuses on measuring the etendue of LED sources experimentally, particularly when the emitter's area and angular distribution are not specified. Participants reference a lab exercise from Tufts University that outlines a methodology for conducting such measurements. The goal is to compare the focusing strength of two LED sources within an optical setup, emphasizing the importance of etendue in optical engineering.

PREREQUISITES
  • Understanding of optical principles related to etendue
  • Familiarity with LED characteristics and their emission patterns
  • Basic knowledge of experimental measurement techniques in optics
  • Experience with optical setups and focusing mechanisms
NEXT STEPS
  • Research the principles of etendue in optical systems
  • Explore methods for measuring angular distribution of LED sources
  • Study the lab exercise provided in the Tufts University link for practical insights
  • Investigate optical focusing techniques and their applications in LED technology
USEFUL FOR

Optical engineers, researchers in photonics, and students studying optical measurement techniques will benefit from this discussion.

Samu
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How does one measure the etendue experimentally (when the area of the emitter and the angular distribution is not provided) in order to compare the focusing strength of two LED sources in an optical setup?

Thanks!
 
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Here is a lab exercise: http://engineering.tufts.edu/bme/people/georgakoudi/EN31Lab5PolarizationLab.pdf
 

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