LED Detection Range with Night Vision Goggles?

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SUMMARY

The discussion focuses on the detection capabilities of LED wavelengths by Generation 3 ANVIS9 night vision goggles (NVGs), which optimize for wavelengths between 600-900nm. Participants highlight the challenge of converting LED color temperatures (measured in Kelvin) to the visible spectrum, particularly for white LEDs used in general illumination. A suggestion is made to create a chart that correlates the 400-900nm visible spectrum with Kelvin degrees to aid understanding. The variability in LED spectra among manufacturers complicates the ability to provide definitive answers without specific spectral data.

PREREQUISITES
  • Understanding of Generation 3 ANVIS9 night vision goggles
  • Knowledge of LED color temperature and its measurement in Kelvin
  • Familiarity with the electromagnetic spectrum, particularly the visible range (400-900nm)
  • Basic grasp of black body radiation and its relation to LED output
NEXT STEPS
  • Research the spectral output of various LED types and their corresponding color temperatures
  • Learn about the frequency response characteristics of night vision goggles
  • Explore the creation of visual aids, such as charts, that correlate Kelvin temperatures with the visible spectrum
  • Investigate the principles of black body radiation and its application in LED technology
USEFUL FOR

This discussion is beneficial for researchers, engineers, and hobbyists interested in the interaction between LED lighting and night vision technology, particularly those working with Generation 3 NVGs and LED applications.

r971821
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TL;DR
Looking for info on LED lighting detection by Gen 3, anvis9 NVGs and others.
Hi:
Non-physicist here doing some research into detection ability of LED wavelengths by Gen3 anvis9 NVG. Have found that these NVG's optimize 600-900nm. Since LED are sold and measured in K, the conversion is not directly evident to me.
Is it possible to create a chart that might show where the roughly 400-900 nm visible spectrum lies with regard to degrees K for a lay person to understand?
 
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I assume you're referring to 'white' LED's like those found in light bulbs for general illumination. These all emit light in various parts of the spectrum with each type of LED having a somewhat different spectrum. You could probably find the charts for each type with some effort, but in general, the lower the K number the redder the LED looks and the more light will be emitted in the red and orange end of the spectrum compared to the blue end.
 
r971821 said:
TL;DR Summary: Looking for info on LED lighting detection by Gen 3, anvis9 NVGs and others.

Is it possible to create a chart that might show where the roughly 400-900 nm visible spectrum lies with regard to degrees K for a lay person to understand?
Would the diagram in this link be sufficient for you? It starts with some general chat and then you get a pretty graph of irradiance over the EM spectrum against the absolute temperature. Equations follow. An LED attempts to reproduce a near enough black body spectrum at the temperature marked

LEDs vary from maker to maker and they all attempt to assign just one number to the apparent temperature. That may not be useful for you. In fact I'm not sure what you actually want to know and why.

Unless you actually know the spectrum of the LeD of interest and the frequency response of the detector then I don't think you will get an answer. But someone may have an idea.
 
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