Film mirror, and method of manufacturing the same and reflection device for solar heat power generation

Abstract

The invention provides a film mirror having excellent regular reflectance to solar heat, and exhibiting excellent light resistance and weather resistance, which is possible to sufficiently suppress regular reflectance decline; is lightweight and flexible; and can be large-area- and mass-produced at low cost, employing it as a film mirror for solar heat power generation under severe environment for long duration, and provides a manufacturing method and a reflection device for solar heat power generation thereof. A film mirror possessing a resin substrate and provided thereon, a silver reflection layer and a layer possessing at least one UV absorbent, provided on a light incidence side beyond the resin substrate and the silver reflection layer, wherein the at least one UV absorbent satisfies Aa≧1.2×Ab. Aa represents absorbance at an absorption maximum peak in 260-320 nm, and Ab represents absorbance at an absorption maximum peak in 321-400 nm.

Dependencies are inferred from the claim text.