The Influence of Spectral Measurements Uncertainty of Fluorescent Lamps on Calculated Value of Their Relative Melanopic Weighted Irradiance and Colour Quality Parameters

The article presents quantities which are describing light sources color quality and their impact on human body nonvisual effect. Based on spectral power distributions data of three fluorescent lamps, measured by independent laboratories, the paper verified how such measurements differences could influents calculated based on them color and melanopic quantities. The results showed that for the color quality indices there is no significant influences of inter-laboratory variations in spectral power distribution. Additionally the SPDs measurement uncertainty with negligible value affected the calculated melanopic irradiance.