Patent attributes
Provided are an optical reflective film which is a system that permits the employment of a water-based coating method in view of environmental conservation and which, even in a case where the optical reflective film is produced by simultaneous multilayer coating with high production efficiency, exhibits excellent light reflecting properties at a desired wavelength and a low haze due to the suppression of an interlaminar mixing level and interfacial disorder; and an optical reflector using the same. An optical reflective film including at least one unit obtained by laminating a high refractive index layer and a low refractive index layer on a substrate, wherein the high refractive index layer and the low refractive index layer each contain one or more of polyvinyl alcohols, and when a polyvinyl alcohol having the highest content in the high refractive index layer is referred to as a “polyvinyl alcohol (A)” and a polyvinyl alcohol having the highest content in the low refractive index layer is referred to as a “polyvinyl alcohol (B)”, a degree of saponification of the polyvinyl alcohol (A) is different from a degree of saponification of the polyvinyl alcohol (B).
