Assessing glare, Part 4: Generic models predicting discomfort glare of light-emitting diodes

Two generic models to predict the influence of the luminance uniformity and spectral power distribution of light-emitting diode luminaires on discomfort glare were developed. One model was an extension of the empirical Unified Glare Rating, the other was based on a colour appearance model for unrelated colours. A new experiment was carried out to verify the performance of the generic models. There were twelve glare sources, having three types of luminance uniformity and four spectral power distributions. The results showed both generic models outperformed Unified Glare Rating but gave similar performance to each other. The generic model based on the colour appearance model bridges the gap between glare perception and human vision theory.