The quality of light emitted by lighting systems based on high brightness LEDs is studied using colorimetric parameters (chromaticity coordinates, correlated colour temperature and colour rendering index) when operating with different forms of electrical power supply (continuous and pulsed current). Uncertainties, calculated by Monte Carlo simulations applied to relative spectral measurements and colorimetric parameters are presented.
A measurement bench for colorimetric parameters (chromaticity coordinates, correlated colour temperature and colour rendering indices) of LED lightings is described. The analysis of uncertainty sources on relative spectral measurements is exposed. Calculation results of uncertainties, by Monte Carlo simulations, for spectral measurements as well as colorimetric parameters are presented.
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