| 摘要 |
[Problem] To provide: a reflective optical film that permits the employment of a water-based-coating applying method in view of environmental conservation and that, even in a case wherein the optical reflective film is produced by a simultaneous multilayer coating method with high production efficiency, exhibits excellent light reflecting properties at a desired wavelength and a low haze owing to the control of interlaminar mixing level and interfacial disorder; and an optical reflector using the same. [Solution] A reflective optical film which bears, on a substrate, at least one unit obtained by laminating a high-refractive-index layer and a low-refractive-index layer, wherein the high- and low- reflective-index layers each contain one or more polyvinyl alcohols, and when the polyvinyl alcohol having the highest content among the polyvinyl alcohols contained in the high-refractive-index layer is referred to as "polyvinyl alcohol (A)" and the polyvinyl alcohol having the highest content among the polyvinyl alcohols contained in the low-refractive -index layer is referred to as "polyvinyl alcohol (B)", the degree of saponification of the polyvinyl alcohol (A) is different from that of the polyvinyl alcohol (B). |
