| Patent application number | Description | Published |
|---|
| 20080291361 | WIDE ANGLE MIRROR SYSTEM - Composite mirror systems include a wideband thin film interference stack having a plurality of microlayers and an optically thick layer having a refractive index greater than air but less than the smallest refractive index of the stack. The mirror systems can provide high reflectivity for light propagating in the stack and in the optically thick layer at supercritical angles, while avoiding degradation in reflectivity if dirt or other disturbances such as absorbing materials are present at the mirror backside for example due to contact with a support structure. | 11-27-2008 |
| 20090079909 | DISPLAY INCORPORATING REFLECTIVE POLARIZER - A display includes a liquid crystal display panel, an optical cavity producing substantially collimated light and a birefringent reflective polarizer. | 03-26-2009 |
| 20090155540 | POST-FORMABLE MULTILAYER OPTICAL FILMS AND METHODS OF FORMING - Articles including post-formed multilayer optical films with layers of at least one strain-induced birefringent material, methods of manufacturing such articles by post-forming multilayer optical films, and multilayer optical films that are particularly well-suited to post-forming operations are disclosed. The articles, methods and multilayer optical films of the present invention allow for post-forming of multilayer optical films including strain-induced index of refraction differentials while retaining the desired optical properties of the multilayer optical films. | 06-18-2009 |
| 20090323180 | MULTILAYER OPTICAL FILMS HAVING ONE OR MORE REFLECTION BANDS - Multilayer optical films having one or more reflection bands are provided. The films include alternating polymeric layers configured to selectively reflect and transmit visible light at a design angle of incidence, where the selective reflection includes first and second visible reflection bands. At least one of the first and second visible reflection bands is a first-order reflection. | 12-31-2009 |
| 20100067257 | PATTERNED ADHESIVES FOR REFLECTORS - A reflector laminate, and backlights and displays incorporating such reflector laminates are disclosed. The reflector laminate includes a substrate and a reflector that are adhered together by a plurality of adhesive protrusions. The adhesive protrusions provide for a plurality of voids between the reflector and the substrate, so that a free reflector surface is adjacent to an air gap between the reflector and substrate. The reflector can include a multilayer interference reflector, and the presence of the air gap ensures high reflectivity for the laminate. The reflector can be adhered to a solid lightguide, a frame enclosing a portion of a backlight, a frame enclosing a hollow lightguide cavity, or an optical sheet positioned at the output surface of a backlight. | 03-18-2010 |
| 20100156953 | THIN HOLLOW BACKLIGHTS WITH BENEFICIAL DESIGN CHARACTERISTICS - A backlight unit ( | 06-24-2010 |
| 20100165660 | BACKLIGHT AND DISPLAY SYSTEM USING SAME - 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 further includes one or more light sources disposed to emit light into the light recycling cavity. The front reflector includes an on-axis average reflectivity of at least 90% for visible light polarized in a first plane, and an on-axis average reflectivity of at least 25% but less than 90% for visible light polarized in a second plane perpendicular to the first plane. | 07-01-2010 |
| 20100214762 | LAMP-HIDING ASSEMBLY FOR A DIRECT LIT BACKLIGHT - The present invention is applicable to optical assemblies for use with direct-lit backlights that exhibit a lower transmission for light of normal incidence as compared to the transmission of light at higher angles of incidence, to accomplish a leveling effect of the light across the display. In one embodiment, an optical assembly includes a reflector having an internal Brewster angle and a reflective polarizer having orthogonal reflection and transmission axes. In another embodiment, a direct lit backlight assembly includes one or more lamps, a reflector having an internal Brewster angle, where a major surface of the reflector is facing at least one of the one or more lamps, and a light redirecting layer. | 08-26-2010 |
| 20110043732 | HYBRID POLARIZER - A hybrid polarizer includes an absorbing element having a first major surface and a second major surface. The hybrid polarizer also includes a first birefringent reflective polarizer disposed on the first major surface of the absorbing element, the first birefringent reflective polarizer having a first pass axis and a first block axis. The hybrid polarizer further includes a second birefringent reflective polarizer disposed on the second major surface of the absorbing element, the second reflective polarizer having a second pass axis and a second block axis. | 02-24-2011 |
| 20110102891 | LOW LAYER COUNT REFLECTIVE POLARIZER WITH OPTIMIZED GAIN - Multilayer reflecting polarizing films are disclosed having increased in-plane refractive index differences between adjacent microlayers along both the pass and block axis, and having negative refractive index differences between adjacent microlayers along the thickness or z-axis. Major front and back surfaces of the film exposed to air provide a Fresnel reflectivity component to the pass axis reflectivity, and the microlayers provide a microlayer component to the pass axis reflectivity, such microlayer component preferably having a reflectivity of p-polarized light that increases with incidence angle faster than the Fresnel reflectivity component decreases so as to substantially avoid off-axis gain peaks for p-polarized light. The films preferably utilize a relatively small total number of microlayers, arranged in a single coherent stack with monotonic optical repeat unit thickness profile, and at least some microlayers preferably include polyethylene naphthalate or a copolymer thereof. | 05-05-2011 |
| 20110103036 | OPTICAL FILM - An optical film that includes a reflective polarizer and a stretched polymer film is disclosed. The stretched polymer film is laminated to the reflective polarizer, and the stretched polymer film exhibits a refractive index symmetry point at an angle of incidence in air of at least about 60 degrees in a plane of incidence parallel to a direction of greatest stretch. | 05-05-2011 |
| 20110116012 | PASSIVE DAYLIGHT-COUPLED BACKLIGHT WITH TURNING FILM HAVING PRISMS WITH CHAOS FOR SUNLIGHT VIEWABLE DISPLAYS - A passive daylight-coupled display having an LCD panel, a diffuser, a turning film behind the LCD panel, and a curved reflector behind the turning film. For passive backlighting, the diffuser transmits daylight to the reflector, which reflects the daylight to the LCD panel through the turning film and provides for substantially uniform distribution of the daylight on the LCD panel for backlighting it. The turning film has prisms with chaos for an improved viewer experience. | 05-19-2011 |
