Abstract: A system and security card comprising a support substrate having a diffuse layer disposed thereon, the support substrate having a substantially uniform light transmitting characteristic, the lens layer having a predetermined pattern area formed thereon such that when light is transmitted through the support substrate and the diffuse layer a unique pattern is produced that can be read from the light passing there through.

Abstract: The invention provides a light diffuser comprising a macro diffusion efficiency variation wherein at least part of the diffuser is colored. The invention also provides light diffuser comprising a macro diffusion efficiency variation wherein at least part of the diffuser is colored for rear projection displays, back-lighted imaging media, and a liquid crystal display component and device. The invention further provides a process for preparing such a diffuser.

Abstract: Disclosed is a diffuse reflector comprising a macro reflection efficiency variation. The invention provides improved light reflection for a back lit display while simultaneously diffusely reflecting specular light sources.

Abstract: Disclosed is a transparent polymeric diffusion film exhibiting at least 50% transmissivity containing a thermoplastic polymeric material with internal microvoids and containing a plurality of complex lenses on a surface thereof. Such films are useful for diffusing light when it is desired to provide and even light distribution.

Abstract: The invention relates to an optical component comprising a dispersion of layered minute particulate materials in a binder, the layered materials having a layer thickness, a concentration of particulate in the binder, and a basal plane spacing sufficient to provide a component having a light transmissivity of at least 50%.

Abstract: A display system for providing a user viewable visible image, includes a view screen for receiving organic laser light and having a diffusing optical element so that the view screen, in response to organic laser light, produces a viewable visible image, wherein the diffusing optical element includes a viewing angle greater than 160° in a first viewing direction and greater than 100° in a second viewing direction orthogonal to the first direction; one or more organic laser light sources arranged in an array with each such laser light source including a vertical cavity design and means for projecting and modulating the intensity of the organic laser light from the array onto the view screen in a pattern to cause a visual image to be produced by the view screen; and means associated with the view screen for reducing speckle in the organic laser light.

Abstract: Disclosed is a transparent polymeric film having a top and bottom surface comprising a plurality of complex lenses on at least one surface thereof and containing as its primary ingredient a polymer sufficient to impart to the film a light transmission of at least 92% based on a film thickness of 125 micrometers.

Abstract: This patent relates to an imaging member comprising a vacuous polymer base having adhered thereto an image formed on a transparent polymer sheet, wherein said vacuous polymer base has a density of less than 0.7 grams/cc and a modulus to density ratio of between 1500 and 4000 and wherein said image is in contact with said vacuous polymer base.

Abstract: The invention relates to an imaging element comprising at least one imaging layer wherein said imaging layer comprises photosensitive silver halide layer comprising dye forming couplers, a transparent polymer pragmatic sheet below said at least one imaging layer, an adhesive layer below said pragmatic sheet, and a black carrier sheet below said adhesive layer

Abstract: Disclosed is a projection media comprising a transparent polymer layer with random light diffusing elements and having a Tg of less than 75° C.

Abstract: A light diffuser comprises a film bearing a macro diffusion efficiency variation in which the efficiency variation is greater than 5% between two locations that are separated by at least 2 cm where the diffuser comprises a base and a plurality of convex or concave complex lenses on the surface of the base.

Abstract: Disclosed is an optical element comprising substrate with a surface feature having a roughness average (Ra) of from 1 to 200 micrometers containing a dispersion of minute layered particulates in a polymer binder.

Abstract: Processes for making a pragmatic label, a receiver sheet for making such a pragmatic label, and intermediates thereof are described. The receiver sheet comprises a pragmatic pre-label sheet, a lower strippable carrier, a pressure-sensitive adhesive layer between said lower strippable carrier and the pragmatic pre-label sheet. The pragmatic pre-label sheet is made by coextruding a first melt for a polymeric image-receiving layer with one or more other melts for forming a single-layer or multiple-layer pragmatic polymer sheet, wherein said other melts includes a second melt comprising an orientable thermoplastic polymeric material for forming a microvoided layer, said coextruded melts forming a multilayer composite film that is subsequently subjected to stretching. The pragmatic labels and receiver sheets of the present invention can advantageously be made without the use of solvent coating.

Abstract: The invention relates to an imaging member comprising in order an imaging layer, an upper oriented polymer sheet, a laminating adhesive layer in contact with said upper polymer sheet and also in contact with a lower oriented polymer sheet, and a positioning adhesive in contact with the lower side of said lower polymer sheet.

Abstract: Disclosed is an integral film comprising a base bearing a pattern of complex lenses on a surface thereof wherein the complex lenses comprise two or more distinct layers.

Abstract: Disclosed is an optical element comprising in order a light source, air, at least one thin layer having a thickness of 80 to 200 nm, and a thick layer, each layer varying in refractive index (RI) by at least 0.05 from the next adjacent layer, in an alternating manner.

Abstract: An optical converter and method for making same is provided. In accordance with the method, the present invention provides an improved apparatus and methods for fabrication of an optical converter. In one aspect of the invention a method for forming an optical converter is provided. In accordance with this method at least two light guide ribbon structures are provided, with each light guide ribbon structure formed by the steps of roll molding a substrate having a pattern of channels with each channel extending from an input edge to an output edge of said substrate and forming light guides extending along each of the channels from the input edge to the output edge. The at least two light guide ribbon structures are assembled in a stacked arrangement.

Abstract: Disclosed is an optical element comprising a substrate with surface features on a surface thereof having an Ra of from 3 to 200 micrometers containing a dispersion of minute particles having a particle size dimension less than 100 nanometers.

Abstract: Disclosed is a light directing polymeric film bearing on a surface thereof a three-dimensional features having an Ra of at least 3, the features containing a polymer dispersion comprising a continuous phase thermoplastic first polymeric material and a discontinuous phase thermoplastic second polymeric material that is immiscible with the first polymeric material and is dispersed in elongated micro-regions.

Abstract: The invention relates to a validation device comprising at least one specular reflective layer, indicia on said reflective layer, a polymer protective layer overlaying said indicia, and a polymer protective layer on the side of the reflective layer opposite to said indicia wherein said indicia are formed by thermal dye transfer.