Patent ID: 8932701
Filing Date: 2015-01-13
Classification: B32B,G02B,Y10T

Abstract:
1. An optical sheet suitable for use in a laminate comprising at least one glazing component having a peripheral edge, said optical sheet comprising a non-metallic multi-layer optical film having optical properties that are not provided by layers of elemental metal or metal compounds, said optical film including a stack of at least 100 optical layers, said optical film having multiple layers and a peripheral edge, and said multiple layers being fused together therebetween along a substantial portion of only the peripheral edge of said optical film so as to at least substantially reduce delamination of said multiple layers along at least said substantial portion of the peripheral edge of said optical film, wherein a remaining portion of said multiple layers, other than said substantial portion of the peripheral edge, is not fused so as to at least substantially reduce delamination of said multiple layers, and wherein said optical film is at least one of (a) a birefringent dielectric multilayer film that reflects at least 50% of light in a band at least 100 nm wide in a wavelength region, wherein the film is heat set at a temperature sufficient to render the film capable of shrinking to conform without substantial wrinkling to a substrate having a compound curvature or (b) a birefringent dielectric multilayer film that reflects at least 50% of light in a band at least 100 nm wide in a wavelength region, wherein the film is heat set at a temperature sufficient to enable the film to shrink at least about 0.4% in both in-plane directions upon heating.