Glossiness is a physical quantity used to indicate the ability of an object\'s surface to reflect light. It can generally be measured using a gloss meter and a specific value can be given. However, in the application of glossiness, two symbols, GS and GU, are often involved, and most users do not understand their meaninGS. This article introduces the units of glossiness and the relationship between GS and GU.

Standard light sources are lighting light box equipment, which are generally equipped with various types of lamps to simulate different standard light sources. Among them, the more common ones are TL84 and D65 light sources. They are both white light sources in terms of properties. D65 light sources are standard white light sources, while TL84 light sources are warm white light sources. This article introduces the meaning and difference between TL84 and D65 light sources.

As a photoelectric device, the color matching light box can simulate different standard artificial light sources to ensure that the product has a color matching environment close to natural light. Different brands and specifications of color matching light boxes have different types of light sources, but they are often equipped with several common light sources. This article introduces the types and functions of common light sources for color matching light boxes.

Colorimeter is an optical analysis instrument developed based on colorimetry. Therefore, various colorimetric parameters are involved in the process of color measurement, among which the common ones are: 45/0 and d/8, SCI and SCE, 2° and 10°, L*a*b* and Lab, XYZ and Yxy. Initial users are generally not very clear about these similar parameters, which are introduced below.

The CIELab and CIELCh modes of colorimeter are two commonly used colorimetric models in colorimeter. The CIELab model is the most commonly used color measurement model of colorimeter, while the CIELCh mode is a model derived from CIELab. There is a certain relationship between the two. This article introduces the meaning of the color difference values of the CIELab and CIELCh modes of colorimeter?

CIELab and Hunter Lab are commonly used color measurement spaces for colorimeter. Both color spaces use the three parameters L, a, and b to express color, but their meanings are different. This article analyzes the difference between CIELab and Hunter Lab.