Multiple layers of metal oxides
People also ask
What is anti-reflection coating?
Anti-Reflection Coatings Anti-Reflection Coatings Thin film anti-reflection coatings greatly reduce the light loss in multi-element lenses by making use of phase changesand the dependence of the reflectivityon index of refraction. A single quarter-wavelength coating of optimum index can eliminate reflection at one wavelength.
What is the refractive index of a single layer anti-reflection coating?
The surrounding region has a refractive index of n 0, the ARC has a refractive index of n 1 and a thickness of t 1, and the silicon has a refractive index of n 2. For a single layer ARC on a substrate the reflectivity is: The graph shows the effect of a single layer anti-reflection coating on silicon.
Can multilayer anti-reflection coatings be used for Plastic optics?
Multilayer anti-reflection coatings are often applied to optical glasses and crystals, but they can also be used for plastic optics. Analytical design rules exist for simple types of anti-reflection coatings with very few thin-film layers.
What is a quarter wavelength anti-reflection coating?
Use of a quarter wavelength anti-reflection coating to counter surface reflection. The thickness of the anti-reflection coating is chosen so that the wavelength in the dielectric material is one quarter the wavelength of the incoming wave.