2013
DOI: 10.1177/1477153513475913
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User preferences for LED lighting in terms of light spectrum

Abstract: A study was carried out in light booths to investigate user preference for different light spectra. Twenty-one LED spectra and three fluorescent lamps, all at three different correlated colour temperatures were used for the study. Sixty observers evaluated the lit scenes under different spectra for naturalness of selected objects, colourfulness of a Macbeth Colour Checker Chart, and the visual conditions of the lighting booths. The observers preferred the spectral power distributions (SPD) under which the chro… Show more

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Cited by 73 publications
(98 citation statements)
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“…Colour preference has been reported to be impacted by several contextual factors which include the lighting application 19,21 , regional cultural difference [22][23][24] , illuminance level 25,26 and age difference 27 . Such research has contributed to the development of light quality evaluation but has also highlighted new problems.…”
Section: Introductionmentioning
confidence: 99%
“…Colour preference has been reported to be impacted by several contextual factors which include the lighting application 19,21 , regional cultural difference [22][23][24] , illuminance level 25,26 and age difference 27 . Such research has contributed to the development of light quality evaluation but has also highlighted new problems.…”
Section: Introductionmentioning
confidence: 99%
“…their chromaticity coordinates lie above the black body curve. Theoretically, this transmitted light will not be preferred by the user, as Dangol et al [31] and Islam et al [32] found that the observer preferred LED SPDs (spectral power distribution) with D uv values of the light sources were either negative or close to the black body locus. D uv values of light sources affect subjective preference.…”
Section: Discussionmentioning
confidence: 99%
“…Moreover, from the studies [31][32][33][34], it was clear that R9 is not an indicator of subjective preference. However, the chroma and colourfulness values of object colours calculated using CAM02-UCS have a great influence on the subjective preferences, especially for the naturalness and colourfulness (subjective measure).…”
Section: Discussionmentioning
confidence: 99%
“…Seven LED SPDs and one fluorescent lamp SPDs each at CCTs of 2700 K, 4000 K and 6500 K (altogether 24 different SPDs) were used in the experiment. Altogether 60 observers with normal visual acuity and colour vision participated in the experiment evaluating seven objects related to office environment: a coloured picture, a sample of wood, a smartphone, observers own hand, printed text, a Coke can and a Macbeth Colour checker (MCC) chart (for more details see Islam et al, 2013)). …”
Section: Experimental Set-upmentioning
confidence: 99%