CRI (Color Rendering Index) is a color rendering index that indicates how similarly an artificial light source can express the color of an object compared to natural light. It is expressed as a number from 0 to 100 (Sunshine), and the closer to 100, the closer it is to Sunshine and the color looks more natural. The color rendering index Ra quantifies the degree of matching of colors R1 to R8 under artificial light source conditions and under low CRI light conditions. You can measure the color rendering of the light source in more detail checking the values of R9~R14. In particular, the R9 value plays an important role in the medical lighting sector where the difference between the shades of human tissue and blood must be distinguished well, and the R13 value plays a very important role in the skin treatment and cosmetic fields.

In general, the CRI value refers only to the average value of R1 to R8 among R1 to R14 values, and does not include the average value from R9 to R14. However, in order to actually have good color rendering, it is necessary to increase the average value of R9~R14, and it is especially important to raise the value of R9~R12, but it is not easy to raise this value in LED. The values of R1~R8 as well as the values of R9 and R12 are the highest in the world. GLBTECH RaMax products realize primary colors close to Sunlight to express the colors closest to nature and provide comfort and relief from eye fatigue.