A gloss meter is an instrument used to measure the gloss of the surface of an object. The principle is based on the reflection and scattering characteristics of light, and the gloss value of an object is calculated by measuring the intensity of the reflected light and the distribution of the scattered light. The principle of gloss meter will be explained in detail below.
1. Reflection and scattering of light.
The basis of gloss meter measurement is the reflection and scattering of light. When light hits the surface of an object, some of the light is absorbed by the object, some of the light is reflected, and some of the light is scattered. Some of the reflected light is specular reflection, that is, the light is reflected back at the angle of the incident light; The other part is diffuse reflection, where light rays are scattered in all directions. Glossimeters calculate the gloss value of an object by measuring the properties of these reflected and scattered light.
Second, the calculation of gloss.
Glossiness refers to the ratio of the intensity of light reflected from the surface of an object at a certain angle to the intensity of incident light. Depending on the gloss standard, the measurement angle is usually ° or 85°. The gloss meter measures the intensity of the reflected light at these angles and calculates the corresponding gloss value.
When calculating glossiness values, the effect of specular and diffuse reflection on the total reflected light intensity needs to be considered. The Fresnel formula is usually used to calculate the glossiness value, which takes into account the influence of factors such as the angle of incidence of light, the angle of reflection, and the surface roughness on the intensity of the reflected light.
3. Influencing factors of gloss.
The gloss value of an object is affected by a variety of factors, including the roughness of the surface, microstructure, refractive index, coating condition, etc. For example, the greater the surface roughness, the stronger the scattering effect, and the lower the gloss value; The effect of the coating on gloss is also significant, and the quality and thickness of the coating directly affect the measurement of gloss values.
Fourth, the application of gloss meter.
Gloss meters are widely used in quality control and product development in industries such as paint, plastics, paper, ceramics and glass. By measuring the gloss value of the product under different process conditions, the influence of process parameters on the surface quality of the product can be understood, and then the process parameters can be optimized to improve product quality. At the same time, the measurement results of the gloss meter can also be used as an important indicator of product performance to evaluate the appearance and quality of the product.
In summary, the principle of glossmeter is based on the reflection and scattering characteristics of light, and calculates the gloss value of an object by measuring the intensity of the reflected light and the distribution of scattered light. Understanding the principles and influencing factors of gloss can help us better understand and apply the measurement results of gloss meters to improve the quality and performance of our products.
Come to the app to enjoy the high-definition**Chongqing Jianduoduo Technology*** referred to as "Zhenduoduo Colorimeter"), located in Banan District, Chongqing. It is a distributor specializing in the sales and maintenance of colorimeters, spectrophotometers, spectrophotometers, and standard color-matching light boxes. The main products are: colorimeter, computer colorimeter, color matching software, spectrophotometer, hyperspectral camera, gloss meter, haze meter, color light box, image test card, etc. The company has always adhered to the tenet of "quality first, customer first, quality service, and abiding by the contract", and with high-quality products, good reputation, and high-quality service, the products sell well in nearly 30 provinces, municipalities and autonomous regions across the country and are exported to Singapore, India and other countries. Wholeheartedly cooperate with domestic and foreign businesses for win-win cooperation, common development and create brilliance together.