Abstract: In a first aspect, a multilayer film includes a polymeric substrate film, a first fluoropolymer layer adhered to a first side of the polymeric substrate film and a polymeric oxygen barrier layer adhered to a second side of the polymeric substrate film. The multilayer film has an oxygen transmission rate of less than 4.0 cc/m2-day measured according to ASTM 1927-07. In a second aspect, a photovoltaic module includes a backsheet and an encapsulant layer. The backsheet includes a multilayer film including a polymeric substrate film, a first fluoropolymer layer adhered to a first side of the polymeric substrate film and a polymeric oxygen barrier layer adhered to a second side of the polymeric substrate film. The multilayer film has an oxygen transmission rate of less than 4.0 cc/m2-day measured according to ASTM 1927-07. The encapsulant layer is adhered to the polymeric oxygen barrier layer.

Abstract: A reflection-type projection screen is provided having uniformly high gain over a wide range of viewing angles. The projection screen includes a dual-purpose light reflective, supportive substrate including at least one unpigmented flash-spun plexifilamentary film-fibril sheet having a light reflectance of greater than about 85% and a gloss of less than about 10% when measured at a 60° incident angle, and an optical diffusion layer of a light transmissive melt-processible polymer containing diffusion-enhancing particles covering at least one surface of the substrate. The projection screen has an optical gain of between about 0.90 and about 2.0 and the optical gain deviates by no more than about 8% over viewing angles between ?60° and +60°. The projection screen has good drapeability, rollability the ability to lay and hang flat. The projection screen can also be recycled.

Abstract: A security hologram is disclosed that is invisible to a human eye or to various optical detectors until the hologram is optically coupled to a suitable modifier (e.g., a prism). Also disclosed is a method of recording the security hologram and a method of using the hologram in security applications to establish authenticity of article(s).

Abstract: A reflection-type projection screen is provided having uniformly high gain over a wide range of viewing angles. The projection screen includes a dual-purpose light reflective, supportive substrate including at least one unpigmented flash-spun plexifilamentary film-fibril sheet having a light reflectance of greater than about 85% and a gloss of less than about 10% when measured at a 60° incident angle, and an optical diffusion layer of a light transmissive melt-processible polymer containing diffusion-enhancing particles covering at least one surface of the substrate. The projection screen has an optical gain of between about 0.90 and about 2.0 and the optical gain deviates by no more than about 8% over viewing angles between ?60° and +60°. The projection screen has good drapeability, rollability the ability to lay and hang flat. The projection screen can also be recycled.

Abstract: A security hologram is disclosed that is invisible to a human eye or to various optical detectors until the hologram is optically coupled to a suitable modifier (e.g., a prism). Also disclosed is a method of recording the security hologram and a method of using the hologram in security applications to establish authenticity of article(s).

Abstract: Wire-grid polarizers (WGPs) and their use in transmissive displays are disclosed. The displays containing these WGPs possess high contrast and brightness characteristics in comparison to prior art displays.

Abstract: A privacy screen for a display (e.g., a LCD) includes having a polarizing film and a birefringent film is described. The privacy screen transmits substantial amounts of light emanating from the display in an orthogonal (or near-orthogonal) direction while not transmitting substantial amounts of horizontal, non-orthogonal light emanating from the display. In this manner, a privacy effect results in that the display is viewable by someone only when that someone is essentially directly in front of the display.

Abstract: A privacy screen for a vertically polarized display (e.g., a LCD) that comprises a rotating film, a polarizing film and a birefringent film is described. The privacy screen transmits substantial amounts of light emanating from the display in an orthogonal (or near-orthogonal) direction while not transmitting substantial amounts of horizontal, non-orthogonal light emanating from the display. In this manner, a privacy effect results in that the display is viewable by someone only when that someone is essentially directly in front of the display.

Abstract: A privacy screen for a display (e.g., a LCD) includes having a polarizing film and a birefringent film is described. The privacy screen transmits substantial amounts of light emanating from the display in an orthogonal (or near-orthogonal) direction while not transmitting substantial amounts of horizontal, non-orthogonal light emanating from the display. In this manner, a privacy effect results in that the display is viewable by someone only when that someone is essentially directly in front of the display.