Colour rendition engineering and psychophysical assessment of the multicolour solid-state lighting

Author is investigating the solid-state lighting application under low illuminance conditions by performing the psychophysical experiments. Technological part of the thesis is focused on optimisation of multicolour light-emitting diodes for human centric lighting and restoring the chromaticity of photochemically damaged pigments. The main goal of the thesis is psychophysical and theoretical assessment of the dynamic led lighting systems with controlled colour quality parameters. This is achieved by performing the psychophysical experiments at low illuminance levels, demonstrating the metameric light source chromaticity matching method, modelling solid-state lighting for human centric lighting with minimal independent colour components and performing temporal visual restoration of photochemically damaged pigments under multichannel solid-state lighting. There are four chapters in the dissertation. Psychophysical experiments in the outdoor and indoor environments are described in the first chapter. Chromaticity matching of metameric tetrachromatic light source is investigated in the second chapter. Pentachromatic solid-state lighting system is evaluated for human centric lighting in the third chapter. Merchandise pigments are treated under UV lighting and restoration of their chromaticity is modelled with light-emitting diodes in the fourth chapter