Whether the light source of color matching light box/standard light box is standard or not, how to measure it?

     Color  light box/standard light source box is a kind of equipment which contains many different types of light sources and can output specific spectrum and color temperature. Color  light boxes are mainly used in various industries including textiles, printing and dyeing, coatings, automobiles, cosmetics, furniture, electronics, medicine, food and many other industries. By visually comparing the color of color light box, the color differences of the goods can be detected very intuitively, thereby avoiding disputes between manufacturers and inspectors caused by changes in the light source environment.

     The core components of the color light box/standard light box are various artificial standard light source tubes,  such as the CIE recommended D65 light source representing average daylight, A light source representing sunset, CWF light source for commercial and office institutions in the United States, TL84 light source for  important commercial color-match light source in the European market, etc.

     The core technical indexes of color matching light box/standard light box include the following: the standardization of light source spectral distribution, the display uniformity of light source illumination, the stability of light source, the color temperature and color rendering index of the light source, and lifespan of light source.

     The CL800/CL500 illuminance meter can conveniently measure the stability, uniformity, and spectral matching of light sources in color  light boxes/standard light source boxes. The operation process is as follows: