Abstract: An optical display system is disclosed. The system has an optical light source, a first microstructured optical component having a plurality of first microstructures, and having a nominal first microstructure pitch, P1; and a second microstructure optical component, arranged relative to the first microstructured optical component, having a plurality of second microstructures and having a second nominal microstructure pitch, P2. P2/P1 has a value closer to the mid-point between consecutive integers than to either one of the consecutive integers.

Abstract: There is provided an optical plate. The optical plate includes a supporting substrate and an optical diffuser film. The optical diffuser film has a density of light scattering particles to provide light diffusion. The optical diffuser film has a surface facing the supporting substrate, wherein a first portion of the surface facing the supporting substrate contacts the supporting substrate. There exists a gap between a second portion of the surface facing the supporting substrate and the supporting substrate, wherein the ratio of the area of the first portion to the second portion is less than 10%.

Abstract: There is provided an optical diffuser sheet. The optical diffuser sheet has a first surface and a second surface opposite to the first surface. The first surface has a plurality of optical structures arranged to diffuse and direct light illuminated onto the first surface. The optical diffuser sheet when illuminated is characterized by an absorption of less than 10% and an absolute hiding power of less than 10%.

Abstract: An optical display system is disclosed. The system has an optical light source, a first microstructured optical component having a plurality of first microstructures, and having a nominal first microstructure pitch, P1; and a second microstructure optical component, arranged relative to the first microstructured optical component, having a plurality of second microstructures and having a second nominal microstructure pitch, P2. P2/P1 has a value closer to the mid-point between consecutive integers than to either one of the consecutive integers.

Abstract: An optical display system is disclosed. The system has an optical light source, a microstructured optical component, and an optical display. The microstructured optical component has a plurality of microstructures, and a nominal microstructure pitch. The optical display is arranged relative to the microstructured optical component and has a plurality of pixels having a pixel pitch, wherein the microstructure pitch is such that an intensity of a Moiré pattern produced by the display due to interaction of light directed by the microstructured optical component from the light source is substantially zero.

Abstract: A polymer resin extrusion head includes one or more annular extrusion modules in which a spiral channel means having one or more convolutions extends from a resin inlet on the periphery of the module to an annular extrusion outlet. Preferably, the channel means gradually opens into an annular frustoconical space leading to the extreusion outlet at the inner edge of the module. The spiral channel extends symmetrically around the extrusion module or modules in a manner so as to subject all of the extruded polymer flowing from the inlet to the extrusion outlet to substantially the same process conditions along the flow path. As a result, the polymer is distributed at the outlet with properties which are substantially symmetrical around the axis of the extrusion module or modules for all resin distributed to the outlet.

Abstract: An apparatus to apply a uniform coating to a gravure cylinder for imprinting upon a second surface, typically a web, is disclosed herein. The apparatus includes a feed bar, which controls the flow of the coating solution, and a supply box, which includes end dams, an overflow port, and a reservoir created by a baffle. With the overflow port and baffles a uniform coating of a composition is achieved without imperfections created by evaporation or foreign matter.

Abstract: A meshed for producing an abrasion-resistant, ultraviolet radiation cured coating on a surface of a polymeric substrate is disclosed, as well as the article produced from the method. The uncured coating material which is substantially free of non-reactive volatile components is (i) applied to the substrate (ii) heated along with the substrate to a temperature sufficient to drive a portion of the coating material into a region beneath the surface of the substrate, (iii) and cured onto the substrate by exposing the coating material under anaerobic conditions to sufficient ultraviolet radiation to cure the coating material. Heating of the solvent-free coating prior to ultraviolet radiation cure and while in contact with the substrate results in improved adhesion of the coating to the substrate.

Abstract: A polymer resin extrusion head includes one or more annular extrusion modules in which a spiral channel having one or more convolutions extends from a resin inlet on the periphery of the module to an annular extrusion outlet. Preferably, the channel gradually opens into an annular frustoconical space leading to the extreusion outlet at the inner edge of the module. The spiral channel extends symmetrically around the extrusion module or modules in a manner so as to subject all of the extruded polymer flowing from the inlet to the extrusion outlet to substantially the same process conditions along the flow path. As a result, the polymer is distributed at the outlet with properties which are substantially symmetrical around the axis of the extrusion module or modules for all resin distributed to the outlet.

Abstract: A method for producing an abrasion-resistant, ultraviolet radiation cured coating on a surface of a polymeric substrate is disclosed, as well as the article produced from the method. The uncured coating material which is substantially free of non-reactive volatile components is (i) applied to the substrate (ii) heated along with the substrate to a temperature sufficient to drive a portion of the coating material into a region beneath the surface of the substrate, (iii) and cured onto the substrate by exposing the coating material under anaerobic conditions to sufficient ultraviolet radiation to cure the coating material. Heating of the solvent-free coating prior to ultraviolet radiation cure and while in contact with the substrate results in improved adhesion of the coating to the substrate.

Abstract: A polymer resin extrusion head includes one or more coaxial annular extrusion modules each including a pair of mating annular members with central frustoconical portions having apexes with an axial dimension greater than the axial dimension of the outer portions of the modules so as to form air spaces around each module including frustoconical air space portions to avoid direct heat transfer between adjacent modules. A spiral channel having one or more convolutions extends from a resin inlet on the periphery of the module and gradually opens into a frustoconical transfer passage leading to an annular extrusion outlet on the inner edge of the module. The spiral channel evenly distributes resin from the inlet to the annular outlet.