Patent application number | Description | Published |
20110032727 | BACKLIGHT REFLECTORS HAVING A PRISMATIC STRUCTURE - A back reflector for a lightguide in a turning film backlight includes a prism film layer in direct contact with a reflective layer. The lightguide includes a light guiding region having a refractive index that is substantially spatially uniform. The reflective layer may be specular or diffuse and may include a multilayer polymeric film. | 02-10-2011 |
20110090423 | ILLUMINATION DEVICE WITH PROGRESSIVE INJECTION - Illumination devices having a partially transmissive front reflector, a back reflector, and a cavity between them are disclosed. At least one light injector including a baffle and a light source is disposed in the cavity. The light injector is capable of injecting partially collimated light into the cavity. The output area of the illumination device can be increased by disposing light injectors progressively within the cavity, without sacrificing uniformity of the light emitted through the output area. | 04-21-2011 |
20110096529 | BACKLIGHTS HAVING SELECTED OUTPUT LIGHT FLUX DISTRIBUTIONS AND DISPLAY SYSTEMS USING SAME - A backlight that includes a front reflector ( | 04-28-2011 |
20110199352 | SEMISPECULAR HOLLOW BACKLIGHT WITH GRADIENT EXTRACTION - A backlight that includes a front reflector and a back reflector that form a hollow light recycling cavity including an output surface is disclosed. The backlight also includes a semi-specular element, and a light extraction element disposed within the hollow cavity. The light extraction element has a gradient specularity. The backlight also includes one or more light sources to inject light into the hollow light recycling cavity, where the one or more light sources are configured to inject light over a limited angular range. | 08-18-2011 |
20120026431 | LIGHTGUIDE WITH OPTICAL FILM CONTAINING VOIDS AND BLACKLIGHT FOR DISPLAY SYSTEM - A lightguide ( | 02-02-2012 |
20120200801 | LIGHT SOURCE AND DISPLAY SYSTEM INCORPORATING SAME - Light sources are disclosed. A disclosed light source includes an optically reflective cavity that includes an input port for receiving light and an output port for transmitting light, a lamp that is disposed at the input port, and an optical stack that is disposed at the output port. The optical stack includes a forward scattering optical diffuser that is disposed at the output port and has an optical haze that is not less than about 20%, and an optical film that is disposed on the optical diffuser. The optical film enhance total internal reflection at the interface between the optical film and the optical diffuser. The optical film has an index of refraction that is not greater than about 1.3 and an optical haze that is not greater than about 5%. The optical stack also includes a reflective polarizer layer that is disposed on the optical film. Substantial portions of each two neighboring major surfaces in the optical stack are in physical contact with each other. | 08-09-2012 |
20120206674 | IMMERSED ASYMMETRIC REFLECTOR WITH REDUCED COLOR - A film construction ( | 08-16-2012 |
20120275023 | IMMERSED REFLECTIVE POLARIZER WITH ANGULAR CONFINEMENT IN SELECTED PLANES OF INCIDENCE - A film construction ( | 11-01-2012 |
20120287677 | OPTICAL CONSTRUCTIONS INCORPORATING A LIGHT GUIDE AND LOW REFRACTIVE INDEX FILMS - Optical constructions use a low index of refraction layer ( | 11-15-2012 |
20130022315 | OPTICAL STACK AND LIGHTGUIDES - Optical stack is disclosed. The optical stack includes a first optical stack that includes, a first optical adhesive layer, and a reflective polarizer layer that is disposed on the first optical adhesive layer. The reflective polarizer layer substantially reflects light of a first polarization state and substantially transmits light of a second polarization state orthogonal to the first polarization state. The optical stack also includes a second optical stack that includes a second optical adhesive layer, a low index layer that is disposed on the second optical adhesive layer and includes a plurality of voids dispersed in a binder, and a light directing film that is disposed on the low index layer and includes a plurality of unitary discrete structures. Portions of each unitary discrete structure penetrate into the first optical adhesive layer. Portions of each unitary discrete structure do not penetrate into the first optical adhesive layer. Each unitary discrete structure defines a penetration depth and a penetration base at the interface between the penetrating and non-penetrating portions of the unitary discrete structure. The penetration base has a minimum penetration base dimension. The plurality of unitary discrete structures has an average penetration depth and an average minimum penetration base dimension. The ratio of the average penetration depth to the average minimum penetration base dimension is at least 1.5. The peel strength between the first and second optical stacks is greater than about 30 grams/inch. | 01-24-2013 |
20130208360 | LOW REFRACTIVE INDEX DIFFUSER ELEMENT HAVING INTERCONNECTED VOIDS - An optical diffuser layer includes a binder, a plurality of metal oxide particles dispersed in the binder, and a plurality of interconnected voids. A plurality of haze generating particles are dispersed in the binder. The optical diffuser layer has an effective refractive index of 1.3 or less. | 08-15-2013 |
20140009912 | SEMISPECULAR HOLLOW BACKLIGHT WITH GRADIENT EXTRACTION - A backlight that includes a front reflector and a back reflector that form a hollow light recycling cavity including an output surface is disclosed. The backlight also includes a semi-specular element, and a light extraction element disposed within the hollow cavity. The light extraction element has a gradient specularity. The backlight also includes one or more light sources disposed to inject light into the hollow light recycling cavity, where the one or more light sources are configured to inject light over a limited angular range. | 01-09-2014 |
20140138131 | CONDUCTIVE TRACE HIDING MATERIALS, ARTICLES, AND METHODS - An article includes a patterned substrate including a substrate surface with an inorganic electro-conductive trace adjacent thereto (wherein the substrate and the inorganic material of the trace each has an index of refraction), and a layer including a polymerized acrylate matrix adjacent to at least a portion of the surface of the substrate and the inorganic electro-conductive trace, wherein the layer has an index of refraction that is within ±10% of the average of the indices of refraction of the substrate and the inorganic material of the trace. | 05-22-2014 |
20140254125 | ILLUMINATION SYSTEMS WITH SLOPED TRANSMISSION SPECTRUM FRONT REFLECTOR - A backlight ( | 09-11-2014 |