When measuring color, the colorimeter uses a specific color space as the basis, represents the color information with different symbols, and quantifies the color information digitally. CIE Lab and CIE LCh are the most commonly used color spaces in colorimeter, among which CIE LCh is obtained by deforming CIE Lab . So, what is the difference between colorimeter Lab and LCh ? How to convert between Lab and LCh ?

For facing stones, gloss is an important physical property, which reflects the gloss performance of facing stones and affects their decorative effects. Therefore, measuring the gloss of facing stones is an important means to control the appearance quality of products and improve product competitiveness. This article introduces the gloss measurement angles and instruments for facing stones.

CIELuv color space and CIELab color space are the two most common uniform color spaces in colorimeter. Both color spaces use three components to describe color, and color is expressed by lightness and chromaticity. So, what do colorimeter CIELuv and CIELab mean? What are the differences? The following is an introduction.

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.