With the continuous advancement of LED technology, particularly in the development of Yujileds® phosphors, we have established ourselves as leaders in LED spectroscopy engineering. Yujileds® is proud to be the first in the world to successfully simulate and commercialize CIE Illuminant using a single LED.

CIE Illuminant D65 is a standardized reference light source developed by the International Commission on Illumination (CIE) to represent average daylight at a color temperature of around 6500K. Widely used in color matching, quality control, and color reproduction in industries such as graphic arts, printing, and photography, D65 ensures reliable and consistent color communication. As a cornerstone of color science, it plays a pivotal role in maintaining color accuracy across various media and visual applications.