In the production process, we often find A problem, under this light source to observe the color of A standard sample and B standard sample is the same or the color difference is very small, but under another light source to observe the color of A and B is very different, this phenomenon is called "Metamerism". Heterochromatic spectrum is simply the same color under a light source, but the composition of the spectrum is different. Printing and dyeing industry often said that jumping lights and heterochroma is a concept.
The same two products, under different light sources, the color display is different
The fundamental reason for the different colors of different light sources is that the spectral reflectance of the two colors is different
So in the actual production process how to avoid the occurrence of heterochromatic spectrum phenomenon?
First of all, it is necessary to understand that there are three elements that determine the color of the surface of an object: the object, the light source, and the observer. Only when these three elements are exactly the same, the surface color of the object can be completely consistent.
Observers are often the same, and we need to control the consistency of variable elements of objects or light sources to avoid metachromatism.
The first method is to unify the light source. We can use the same environment as the customer's common places and their lighting conditions to carry out color matching work to achieve conditions and other colors. This method has high environmental requirements such as light source, and can not really avoid the phenomenon of metachromatism.
The second method is to unify the spectral reflectance of the object. As long as the spectral reflectance of the color is consistent, then the color of the two objects must also be consistent under any light source conditions.
The color can be seen intuitively, but the spectral reflectance can not be observed with the naked eye, and needs to be identified with the aid of instruments. The spectral color measurement series products developed by color spectrum technology can not only visually read the color value, but also produce spectral reflectance, which greatly reduces the workload of color matching workers, and can help color matching workers improve the accuracy of color matching.