Dielectric Coating
Dielectric coatings are, depending on the objective, coatings with high or low reflectance. They consist of alternating layers of dielectric materials with high and low refractive index. This allows extremely stable thin layer stacks to be produced. Light that hits such a layer stack is superimposed by multiple interference in such a way that the reflected and continuous components can be adjusted almost arbitrarily. By selecting suitable materials and optimized layer thicknesses, anti-reflective coatings, for example, can be produced in a very targeted manner. In this way, the light can be adjusted almost arbitrarily in transmission and reflection. In addition, dielectric filters or mirrors enable extremely precise and efficient separation of individual areas of the UV, visible and NIR spectrum. Dielectric coatings are also known as thin-film coatings or interference coatings.
