Anti-reflection coating from Yazaki Corp.* Patent No. U.S. 6,528,142 B2 Yazaki Corporation has received a patent for an anti-reflective coating Anti-reflective or antireflection (AR) coatings are a type of optical coating applied to the surface of lenses and other optical devices to reduce reflection. This improves the efficiency of the system since less light is lost. comprising a transparent substrate layer has a refractive index A property of a material that changes the speed of light, computed as the ratio of the speed of light in a vacuum to the speed of light through the material. When light travels at an angle between two different materials, their refractive indices determine the angle of transmission Ns. The first layer having a refractive index N1 lower than Ns and formed over the substrate layer. The second layer has a refractive index N2 higher than N1, but lower than Ns, and formed over the first layer. A light scattering scattering In physics, the change in direction of motion of a particle because of a collision with another particle. The collision can occur between two charged particles; it need not involve direct physical contact. region provided between the substrate layer and the second layer, which has heterogeneities causing the fight scattering. The heterogeneities have an average size that is less than each of the thicknesses of the first and the second layers, and the scattering region is provided as a roughened rough·en tr. & intr.v. rough·ened, rough·en·ing, rough·ens To make or become rough. Adj. 1. roughened - used of skin roughened as a result of cold or exposure; "chapped lips" chapped, cracked surface of the first layer in contact with the substrate layer. |
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