What Are The Common Optical Coatings?

Optical coating Optical coating refers to the process of coating a layer (or multiple layers) of metal (or dielectric) films on the surface of optical parts. These coatings can significantly alter optical components to reduce or increase light reflection, beam splitting, color separation, filtering, polarization, and more. Optical coatings can be applied directly to the surface of optical components to adjust their reflectivity, etc. In addition, many special effects can be achieved by using the characteristics of materials and the cooperation of multiple film layers.

Common coating types include anti-reflection coating, broadband anti-reflection coating, dielectric high-reflection coating, metal reflective coating, metal reinforced coating, metal conductive coating, transparent conductive coating, front cut-off film, rear cut-off film, polarizing film, anti-reflection + waterproof film , high-reflection + waterproof membrane and so on. Film layer selection can be made according to product requirements. Commonly used coating materials are generally magnesium fluoride, silicon dioxide, zirconia, etc.

Common equipment for coating: electron beam evaporation, thermal evaporation.

Commonly used coating materials: cerium oxide, aluminum oxide, hafnium oxide, ITO, silicon monoxide, silicon dioxide, tantalum pentoxide, niobium pentoxide, titanium oxide, gold, silver, copper, chromium, chromium-nickel alloy, aluminum, titanium.

Temperature range: 20-300℃.

Maximum thickness: 150mm.

Coating types: anti-reflection film, broadband anti-reflection film, dielectric high-reflection film, metal reflective film, metal reinforced film, metal conductive film, transparent conductive film, front cut-off film, rear cut-off film, polarizing film, anti-reflection + waterproof film, High reflective + waterproof membrane and so on.

Other contents: Lenses, prisms, cold processing of windows, gluing, mid-infrared processing, etc.