What is glossmeter?

Gloss meter, also called glossmeter, is an instrument for measuring the surface gloss of ceramics, paints, inks, plastics, marble, aluminum, hardware and other materials. High-precision gloss meter is divided into three types of high gloss, medium gloss and low gloss according to angle.
Chinese name Glossmeter, foreign name Glossmeter, also known as Glossmeter, used to determine the principle of ceramics and paintFirst: Glossiness is a physical quantity that evaluates the ability of a material's surface to reflect light under a set of geometrically specified conditions, and has the reflective properties of direction selection. We usually say gloss refers to "mirror gloss", so the gloss meter is sometimes called "mirror gloss meter". Gloss is completely different from the concept of "smoothness" or "roughness" in the machining industry, which is the continuation of the small unevenness of the material surface.Second: The measuring principle of the gloss meter is shown in the figure below. The measuring head of the instrument is composed of an emitter and a receiver. The emitter is composed of an incandescent light source and a group of lenses, which produce a certain required incident beam. The receiver consists of a lens and a photosensitive element, which are used to receive the cone beam reflected from the sample surface.Mirror gloss is a relative measure of mirror gloss. The reference standard is black glass with a refractive index np=1.567. Assuming that its plane is ideally polished, the plane reflects the natural light beam specularly and defines the gloss value at this time as 100.0 gloss units. The gloss board is divided into high, medium and low according to the gloss value. The high gloss plate is made of black optical glass or other materials. Medium gloss and low gloss boards are made of glazed ceramic or black optical glass frosted. The gloss meter uses the principle of light reflection to measure the gloss of the sample. That is, the sample is irradiated under the conditions of a predetermined incident angle and a predetermined light beam to obtain the reflected light of the mirror in the direction of the reflection angle.The wave theory can be used to qualitatively explain many optical properties of materials. It can be derived from the wave theory that the ratio of the energy W of incident light passing through a unit area per unit time to the energy flow W of reflected light per unit time.