What is the difference between vacuum coating machine coating and optical coating machine coating?

What is the difference between vacuum coating machine coating and optical coating machine coating? Many people have this kind of doubt. Some people think that the optical coating machine belongs to the vacuum coating machine. Others think that the coating principle of the optical coating machine is different from that of the vacuum coating machine. Today, I will explain them in detail. the difference.

Vacuum coating machine coating mainly uses glow discharge to impact argon (Ar) ions on the surface of the target, and the atoms of the target are ejected and accumulated on the surface of the substrate to form a thin film. The properties and uniformity of sputtered films are better than those of evaporated films, but the coating speed is much slower than that of evaporated films. Almost all new sputtering equipment use powerful magnets to move electrons in a spiral motion to accelerate the ionization of argon around the target, which increases the probability of collision between the target and argon ions and increases the sputtering rate. Generally, metal coatings mostly use DC sputtering, while non-conductive ceramic materials use RF AC sputtering. The basic principle is to use glow discharge in a vacuum.

Whether the optical coating machine is coated with spectacle lenses made of inorganic or organic materials, in daily use, friction with dust or grit (silicon oxide) will cause the lens to wear and scratches on the surface of the lens. Compared with glass flakes, organic materials have lower hardness and are more prone to scratches. Through the microscope, we can observe that the scratches on the lens surface are mainly divided into two types. One is the scratches caused by grit, which is shallow and small, and it is not easy for the wearer to detect; the other is the scratches caused by the larger grit. , Deep and rough periphery, in the central area will affect vision.

The difference between vacuum coating machine coating and optical coating machine coating:
Vacuum coating is generally TiN, CrN, TiC, ZrN, and the thickness of the electroplated film is about 3~5 microns. In general, the thickness of the vacuum coating film cannot be tested on the equipment. The film thickness test of the optical coating can be installed on the top of the coating machine with a film thickness tester. The earliest is the light control test. Nowadays, the crystal control (crystal oscillator) uses the frequency of the crystal oscillator to test the coating. thickness. Different film layers have different thicknesses.

Founded in 2007 as previous name Huahong Vacuum Technology,is professional China Optical film coating machines suppliers and Optical film coating machines suppliers ,including but not limited to Sputtering Systems, Optical Coating Units, Batch Metallizers, Physical Vapor Deposition (PVD) Systems, Hard and Wear Resistant Vacuum Coating Deposition Equipment, Glass, PE, PC Substrate Coaters, Roll-to-Roll Machines for coating flexible substrates. The machines are used for a wide range of applications described below (but not limited to) Automotive, Decorative, Hard coatings, Tool & Metal Cutting coatings, and thin film Coating applications for industrial and Laboratories including Universities.Danko Vacuum Technology Company Ltd is committed to expand our market boundaries by providing high-quality, high-performance and wholesale Optical film coating machine prices. Our Company is highly focus on after-sales service in Domestic and International markets, providing accurate part processing plans and professional solutions to meet customers need.