A STUDY OF COLOR RENDERING PROPERTIES BASED ON COLOR PREFERENCE OF OBJECTS IN ADAPTATION TO LED LIGHTING

摘要

The calculation method of the CIE color rendering specification is based on colorimetric fidelity to a reference illuminant. However, the Ra of a white LED light source is not suitable for measuring the preference of the impression of chromatic objects illuminated by a light source. As for color preference experiments, it is made clear that the tendency to see color under LED lighting with various CCTs and with the color rendering properties can be evaluated subjectively. It was suggested that the relationship between the preference evaluation and the saturation of object colors has a higher correlation than that of the relationship between the preference evaluation and the Ra of various LED lighting. We carred out detailed investigation including memory colors in order to make it clear that the relationship between the preference evaluation and the saturation of object colors exists. From the experimental results in various LED lighting, it turned out that the range in the preference for color saturation of an object exists as in previous experiments for several samples. In addition, it was suggested that the memory color relates to the preference evaluation.