The Influence of Individual Color Preference on LED Lighting Preference

摘要

The individual color preference plays an important role in visual experience. Therefore, a rigorous psychophysical experiment was carried out to investigate the influence of the individual color preference on lighting preference. 45 observers (age from 19-25) were selected from 318 valid questionnaires including three categories of people (15 students categorically preferred blue, 15 students categorically preferred green and 15 students categorically preferred red). The observers made corresponding subjective preference scores with 7-level rating scale on five experimental objects severally illuminated by five spectral power distributions (SPDs) of LED light with different correlated color temperatures (CCTs). Afterwards we used various statistical methods on 1125 sets of data and it was found that the individual color preference had a significant influence on lighting preference but it was not the crucial factor. Compared with this, the results emphasized the dominate influence of the light of CCTs on lighting preference.