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Lighting Environment Testing Facility (LETF)

An example of the Imaging Colorimeter measurement of a head mounted wearable display system.
An example of the imaging colorimeter measurement of a head mounted wearable display system.
An example of predictive sRGB rendering of “Munsell Book of Colors” tiles.
Predictive sRGB rendering of the “Munsell Book of Colors” tiles
An example of a luminance image taken with LETF's imaging colorimeter.
An example of a luminance image taken with LETF's imaging colorimeter.
Voltage waveform from a photo-diode used to capture light flicker measurements.
Voltage waveform from a photodiode used to capture light flicker measurements.
An example of false color image luminance map taken by an imaging colorimeter of a smartphone display.
False color image luminance map taken by an imaging colorimeter of a smartphone display.
Example of Matlab predictions for the color quality of a light source.
Example of Matlab predictions for the color quality of a light source.
Imaging colorimeter measurement in true color of a smartphone display.
Imaging colorimeter measurement in true color of a smartphone display.
An example of spectral irradiance measurement of a display undergoing thermal testing. Data is accumulated over time to show performance...
An example of spectral irradiance measurement of a display undergoing thermal testing.
The Lighting Environment Test Facility during an evaluation where over 100,000 lux of light needed to flood the test article.
The Lighting Environment Test Facility during an evaluation where over 100,000 lux of light needed to flood the test article.
LETF spectrum testing with a spectroradiometer of an red-green-blue LED light source.
Spectrum testing with a spectroradiometer of an red-green-blue LED light source
A controlled lighting test at the LETF. The device in the image shows the spectrum of the background illumination.
Controlled lighting test at the LETF
An example of spectrum captured by a spectroscope of a high intensity discharge lamp.
Spectrum captured by a spectroscope of a high intensity discharge lamp.