POLYMER-CERAMIC COMPOSITE THIN FILM THAT BLOCKS ULTRAVIOLET AND TRANSMITS VISIBLE LIGHT

摘要

Polymer-ceramic composite thin films that transmit virtually all incident light in the visible spectrum, but block virtually all incident light in the ultraviolet range are disclosed. The films may be rendered microporous and so constructed as to provide controlled refractive index gradient. The films are also useful in protecting materials against U.V. damage.