Spraying paint on a car can not only increase the beauty of the car, but also attract the attention of consumers. If there is color difference in the car paint, it will not only affect the consumer\'s choice, but also reduce the competitiveness of the car product and affect the brand\'s reputation. So, what is the matter with the color difference of car paint? How to detect the color difference of car paint?

As a professional tool for color quantification, colorimeters are generally equipped with corresponding measuring apertures to meet the needs of sample measurement. For samples of different sizes and types, it is sometimes necessary to change the measuring aperture. This article introduces the types of colorimeter measuring apertures and how to change them.

As an optical instrument, the colorimeter has different measuring angles according to the different angles of light source illumination. The more common ones are 45/0, d/8 and multiple angles. Colorimeters with different measuring angles have different functions and effects. This article introduces the angles and functions of colorimeters.

With the continuous development of urban rail transit and the improvement of people\'s aesthetic level, people have higher and higher requirements for the appearance of urban rail trains, especially the appearance and color of urban rail train doors. This has led to the main engine factory to strictly control the color quality, especially the color difference, during the production process of train door product modeling and appearance. So, how to solve the color difference of urban rail train doors? What is the color difference range?

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.