Structured ultraviolet light shielding articles and solar arrays including the same

Abstract

Structured ultraviolet light shielding articles are provided. A structured ultraviolet light shielding article includes a microstructured film having a first major surface and an opposing second major surface, in which the first major surface includes microstructures projecting therefrom; and a multilayer optical film disposed on the microstructures. At least some of the microstructures each has a surface whose slope causes light that is normally incident to the first major surface of the microstructured film to intercept the first major surface or the surface of at least one other microstructure after reflection. The multilayer optical film is comprised of one or more alternating first and second inorganic optical layers collectively reflecting and absorbing light that is normally incident to the first major surface of the microstructured film, an average of at least 50, 60, 70, 80, 90, or 95 percent of incident ultraviolet light over at least a 30-nanometer wavelength reflection bandwidth in a wavelength range from 190 nanometers (nm) to 400 nm. Solar arrays including structured ultraviolet light shielding articles are also provided.

Dependencies are inferred from the claim text.