Measuring Etendue of LED sources

Thread starter Samu
Start date Mar 31, 2014
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Led Measuring Sources

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Measuring the etendue of LED sources experimentally requires assessing both the area of the emitter and the angular distribution of emitted light. Without these parameters, one approach is to utilize optical setups that capture the light's intensity distribution and divergence. Techniques such as using a photodetector in conjunction with a lens can help quantify the light's spread and intensity. Comparing the focusing strength of two LED sources involves analyzing their respective etendue values derived from these measurements. Accurate etendue evaluation is crucial for optimizing optical performance in various applications.

Mar 31, 2014

Samu

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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Apr 1, 2014

UltrafastPED

Science Advisor

Gold Member

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

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