(1) The color rendering of the light source is generally evaluated by the CIE color rendering index, which is a difference evaluation of the color display of more than 10 color samples, including human skin color, with the light source to be evaluated and the standard light source (full shade sky light). Generally speaking, the higher the Ra of a light source, the better its color rendering.
(2) It should be pointed out that because Ra takes the average value of the color sample, although the color rendering index of some light sources is high, the appearance of a particular color may not be good. This should cause the attention of the hotel lighting design.
(3) In the domestic lighting standards and design practices, there has been little attention to color rendering, usually emphasizing the need for high color rendering index light sources in places with color discrimination requirements. In fact, in places where people have more contact with each other, especially hotels, it is very important for guests to show a healthy skin tone.
(4) In addition, good color rendering light source than poor color rendering, under the same conditions, can have a lower illuminance. This is not to say that color rendering can replace some of the illumination, but people feel clearer.
