What is an Optical Coating?

Basically an optical coating is a thin layer of material that creates an interaction and effect between certain visual elements such as a lens or mirror and light. Understanding how optical coatings work requires understanding how light travels through transparent media. The layers used in this technology affect how the optic transmits light and reflects it. And the technology is useful for making glasses and camera lenses for people whose eyes are light sensitive. Materials used for this type of coating vary depending on their application. Examples of materials used for the coating include rare earth materials, oxides, and metals. Their thickness determines the effectiveness of the optics technology, the number of layers used and the difference in refractive index.