What is the difference between vacuum coating and optical coating

- May 29, 2020-

What is the difference between vacuum coating and optical coating

Conceptual difference

1. Vacuum coating is a method of heating metallic or non-metallic materials under high vacuum conditions, causing them to evaporate and condense on the surface of the plating (metal, semiconductor or insulator) to form thin films. For example, vacuum aluminum plating, vacuum chromium plating and so on.
2. Optical coating refers to the process of coating a layer (or multiple layers) of metal (or medium) thin film on the surface of optical parts. The purpose of coating the surface of optical parts is to reduce or increase the light reflection, beam splitting, color separation, filter, polarization and other requirements. The commonly used coating methods are vacuum coating (a kind of physical coating) and chemical coating.

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