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Hengyi Automation Equipment Co.,Ltd is a professional optically coated machine manufacturer, factory, plant and supplier, we are always at your service.Optically Coated Machine DescriptionWhat is optical thin film?optical thin film refers to the components on the plating on a layer or multilayer film to change the light propagation characteristics, is basically by interference effect to achieve the effect.The technological principle of the optical coating�How the membrane materials are plated to the parts?�The process of film formation.After electron beam by 5 to 10 kv electric field acceleration, focus and hit for material surface evaporation, electron beam evaporation pass energy to stay material make it melt, electron beam rapid loss of energy.The core of the electron beam evaporation system components: electron beam gun (hot cathode and plasma electrons)Electron beam focusing method: electrostatic focusing and magnetic deflection is focused on the electron beam generated after, need to focus and allow it to direct him to be the surface of the evaporation materials.E the principle of electron gun coatingAdvantages: no pollution power is bigEvaporation can be high melting point materials film quality is betterDisadvantages: high vacuumHigh equipment costThe classification of the membrane materialCommon several kinds of membrane materialZnS