Patent ID: 6989924
Filing Date: 2006-01-24
Classification: F24S,G02B,Y02E,Y10T

Abstract:
1. In a silver mirror, comprising a polymeric substrate, a specular-reflective silver layer overlying and bonded to said substrate, a protective layer of a transparent film-forming acrylate polymer incorporating a corrosion inhibitor and overlying and bonded to an exposed surface of said silver layer, and a second acrylate polymer incorporating a UV inhibitor bonded to said protective layer, the improvement comprising a corrosion and ultraviolet-resistant- protective shield layer on said second acrylate polymer, said protective shield layer comprising: an overlay of a transparent multi-polymer film of a thickness range of 2–8 mil that incorporates a UV absorber, and is adhered to an exposed surface of said second acrylate polymer or to an adhesive layer on said second acrylate polymer that is highly optically transmissible to visible, ultraviolet, and near infrared light to enable said silver layer to retain spectral hemispherical reflectance and optical clarity throughout the UV and visible spectrum when used in solar reflectors.