What is the coating? It is to attach a few hundred nanometers of thin and multi-layer other materials on the surface of the lens. There are many coating methods. The coating on the surface of the lens is usually physical evaporation in a vacuum chamber, that is, the process of heating the coating material to the evaporation temperature in a vacuum environment to deposit on the lens substrate above, just like boiling water Putting a piece of glass on it will cause water droplets. Compared with other coating methods, the vacuum coating used for lenses has the following characteristics. Let’s take a look at it with the editor of the customized CB Layer Coating lens!

1. No heating, or only a little heating, because the lens itself is not very high temperature resistant. In most cases, the film is coated at room temperature, so the adhesion of the film is a big challenge.
2. The process is relatively fast. Considering the cost control, each coating cycle should not be too long to ensure the output. Generally, the thickness of the coating (single side) is about 300nm, and the entire process (plus vacuum) is completed within 20-40 minutes.
In summary, the editor of customized CB Layer Coating lens tells: a brief introduction to the relevant knowledge of coating, I hope you can learn more through the above introduction.