| Abstract [eng] |
The thesis is aimed at the investigation of niche applications of solid-state lighting with controllable colour-rendition, spatial, photochemical, and photobiological properties. In order to employ the controllability of light emitting diode (LED) based lighting technology, the research on such niche applications as artwork illumination and street lighting are focussed. The smart colour rendition engine (CRE), which allows for continuously tuning metameric spectra with different colour rendition properties, is introduced. The results on the subjective validation of the statistical colour rendition metric using the CRE are presented. The main requirements for artwork illumination are overviewed and the application of the intelligently controlled CRE in artwork illumination is investigated in two aspects: a) the establishment of subjective needs in colour quality of illumination as a function of the contents of artworks and the observers’ cultural background and b) the effect of the control of photochemical damage irradiance on the visual impression from artworks, while adjusting the chromaticity and colour rendition properties of the illuminant. The results on the optimization of the luminance distribution within an intelligent lighting installation for pedestrian areas using the identification of subjective impressions are presented. The low-circadian action LED source for outdoor lighting is introduced and the results on the assessment of photometric, colorimetric, colour-rendition, photobiological, and light-pollution properties as well as on psychophysical performance are presented. |
