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| Number | Title | Issue Date |
| 8087793 | Back-light assembly A back-light assembly for uniformly illuminating large area displays. The back-light assembly includes a uniformly thin waveguide, a reflector and a plurality of light sources evenly distributed along the display area between the waveguide and the reflector. Prismat... | 01/03/2012 |
| 8061877 | Prism sheet having parallelogram microstructures An exemplary prism sheet includes a transparent main body. The transparent main body includes a first surface and a second surface. The first surface and the second surface are on opposite sides of the main body. The first surface of transparent main body is flat. T... | 11/22/2011 |
| 7997771 | LED array systems A light emitting diode (LED) array comprises an array of LEDs mounted to a substrate. The LEDs emit light in a direction generally perpendicular to the substrate. An optical sheet is disposed over the LEDs. At least a portion of light entering one side of the optica... | 08/16/2011 |
| 7967479 | LED signal with lens for sun phantom effect reduction An LED signal that includes a lens having an optical segment configured to direct at least some of the incoming generally collimated light rays from the sun passing through the lens away from an LED found in the traffic signal. ... | 06/28/2011 |
| 7887221 | Diffuser with light condensing function One face of a substrate of a diffuser with a light condensing function is disposed with a plurality of prism rods; at least one inclined face of parts of prism rods is disposed with a rough diffusion face; the diffusion face may be positioned on any position of the ... | 02/15/2011 |
| 7802905 | Light diffuser plate The present invention provides a light diffuser plate, the surface of which is less likely to be scratched, capable of laminating a film base material (3) with a high lamination strength. The light diffuser plate (1) of the present invention inc... | 09/28/2010 |
| 7766515 | Light source with non-imaging optical distribution apparatus A light transforming method and device that includes a lens having one or more specifically shaped surfaces designed to generate an output image by directing the appropriate amount of electromagnetic energy from a substantially collimated beam to the required region... | 08/03/2010 |
| 7753565 | Prism sheet and backlight module the same An exemplary prism sheet includes a transparent main body. The main body includes a first surface, a second surface and a plurality of spherical micro-depressions and a plurality of triangular pyramidal micro-depressions. The first surface and the second surface are... | 07/13/2010 |
| 7703950 | Side-emitting lens for LED lamp A side-emitting lens for use with an LED lamp provides a distribution of emitted light that is substantially normal to an axis of symmetry of the lens; the light can also be symmetrical with respect to a plane normal to the lens axis. The lens has a cavity in which ... | 04/27/2010 |
| 7695168 | Optic film with a plurality of stacked pyramid elements for refracting light Optical film, including a set of elements disposed adjacent to each other and an external surface made of optically transparent material, each element including a lower pyramid being a truncated pyramid, an upper pyramid being a non-truncated pyramid and a plurality... | 04/13/2010 |
| 7645058 | Light diffusing sheet and backlight unit using the light diffusing sheet To provide a light diffusing sheet which enables the light from a lightguide plate or light source of a backlight unit to be conducted to lens film after having been converted to diffused light having a small brightness peak angle, and which generates neither a moir... | 01/12/2010 |
| 7618164 | Moire reducing optical substrates with irregular prism structures An optical substrate having a structured surface that enhances brightness and reduces moiré effect. The optical substrate has a three-dimensionally varying, structured light output surface that comprises an irregular prismatic structure. The irregular prismatic str... | 11/17/2009 |
| 7578607 | Light deflector and light source device A planar light source device has a primary light source (1), a light guide (3) having a light incident surface (31) on which light emitted from the primary light source (1) is incident and a light emitting surface (33) for emitting... | 08/25/2009 |
| 7575344 | Lamp fixture An improved lamp fixture with anti-glare function is disclosed, which comprises: a lamp; a light source; and a light-control unit, composed of a semi-Fresnel microstructure and a light-control microstructure; wherein the light source and the light-control unit are m... | 08/18/2009 |
| 7470047 | Lighting device with integration sheet A light device with integration sheet is disclosed, which comprises: a light source; and at least a sheet, each being disposed at the light emitting end of the light source and comprising a plurality of light diffusion zones; wherein each light diffusion zone has a ... | 12/30/2008 |
| 7448776 | Brightness enhancement film having curved prism units A brightness enhancement film includes a substrate and a plurality of curved prism units. The curved prism units are extended in parallel and mounted to a surface of the substrate. Each of the curved prism units includes at least one meandering surface to provide wi... | 11/11/2008 |
| 7431491 | Light guide plate and backlight module using the same A light guide plate includes a light input surface and a light output surface adjoining the light input surface. The light output surface defines a first portion adjacent to the light input surface, a second portion connected with the first portion away from the lig... | 10/07/2008 |
| 7422353 | Light-emitting device for image taking and image-taking apparatus having same A light-emitting device is disclosed which enables efficient use of luminous flux and achieves a desired light emission characteristic. The light-emitting device has an optical member which has an emergence surface and a plurality of optical portions, each of the op... | 09/09/2008 |
| 7419292 | Illuminating device An illuminating device includes a light source, an optical waveguide that emits light from the light source through an emission surface thereof, and a prism sheet that is provided on the emission surface side of the optical waveguide. In the illuminating device, the... | 09/02/2008 |
| 7413335 | Prism sheet and backlight unit including the same The present invention relates to a prism sheet having a side which is perpendicular to the normal of a light guiding plate. The prism sheet includes a prism sheet base film and a plurality of linearly aligned prisms. The prisms are formed on one side of the prism sh... | 08/19/2008 |
| 7410280 | Light guide for lighting vehicles, preferably motor vehicles The present invention relates to a light guide for lighting vehicles, preferably motor vehicles. Light rays emitted from the light source of the light guide are reflected off of reflecting surfaces toward a light exit surface. The reflected surfaces are arranged to ... | 08/12/2008 |
| 7401967 | Prism sheet and backlight module incorporating same A prism sheet (10) includes a substrate (12) and a plurality of prism structures (14). The substrate includes a plurality of diffusing particles (122) dispersed therein. The prism structures are at a light output side of the substrate. Th... | 07/22/2008 |
| 7401962 | Light deflection element and light source apparatus using the same A surface light source apparatus includes a primary light source (1), an optical guide (3) for guiding light emitted from the primary light source and having a light incoming surface (31) and a light outgoing surface (32), a light deflect... | 07/22/2008 |
| 7377680 | Light spreading device and backlight module utilizing the same A light spreading device and a backlight module utilizing the same. The backlight module includes a light guide, a plurality of point lights, and a plurality of light spreading devices. The light guide includes an entrance surface. The point lights are disposed near... | 05/27/2008 |
| 7370993 | Light recycling illumination systems having restricted angular output This invention is an illumination system that incorporates a light emitting diode and a partially reflecting optical element. The light emitting diode emits internally generated light having a first angular range and reflects incident light with high reflectivity. T... | 05/13/2008 |
| 7367705 | Long curved wedges in an optical film The invention relates to a light redirecting polymeric film comprising a plurality of polymeric individual optical elements wherein the elements comprise curved wedge shaped features in the plane of the film, having a length in the range of 800 to 4000 micrometers. | 05/06/2008 |
| 7364341 | Light redirecting films including non-interlockable optical elements The light redirecting films include a thin optically transparent substrate having a pattern of non-interlocking individual optical elements oriented and placed to produce a desired surface coverage of at least one of the surfaces of the transparent substrate of the ... | 04/29/2008 |
| 7360902 | System and method for light source modulation In one embodiment, a method for modulating light in an image display system includes generating a plurality of light beams. The amount of light beams that are received by a modulator is selectively varied, and the modulated light beams are received at the modulator.... | 04/22/2008 |
| 7362486 | Optical scanning device with at least one resin lens for controlling a beam waist position shift A first optical system guides a light beam from a light source to an optical deflector, and a second optical system converges the light beam deflected by the optical deflector on a surface to be scanned. The first optical system includes at least one resin lens havi... | 04/22/2008 |
| 7360936 | Method and system of LED light extraction using optical elements A light extraction plate can be used with a light emitting diode (LED) to efficiently extract and provide control over the spatial distribution of extracted light in terms of intensity and angle. The extraction plate can have millions of optical micro-elements and c... | 04/22/2008 |
| 7359011 | Reflection-type liquid crystal display device To suppress a decrease in the contrast caused by the reflection on the interface to the air layer without decreasing the quality of display. A reflection-type liquid crystal display device includes a light guide plate having a polarizing element stuck or adhered the... | 04/15/2008 |
| 7357511 | Stress birefringence compensation in polarizing beamsplitters and systems using same Some projection systems use a polarization beamsplitter (PBS) for coupling light to and from an image-forming device. The PBS is typically formed with a reflective polarizing layer disposed between glass covers. Stress birefringence in the glass cover lying between ... | 04/15/2008 |
| 7359119 | Optical arrangement for pre-processing primary illumination light An optical arrangement for pre-processing primary illumination light is proposed, wherein a provided spectral processing section (P) comprises a multi-prism assembly (10) consisting of a plurality of sequentially/consecutively connected prisms (21, 22)... | 04/15/2008 |
| 7354179 | Prism set and light emitting apparatus using the same A prism unit includes a first prism having a first incident face and a first refraction face that is adjacent to and that cooperates with the first incident face to define a first angle ranging 50° to 70°, a second prism having a second incident face that is gener... | 04/08/2008 |
| 7347599 | Etendue-squeezing illumination optics In some embodiments, an apparatus for use generating illumination is provided that comprises a reflective base, a first light source positioned proximate the reflective base, and a reimaging reflector positioned partially about the first light source, where a percen... | 03/25/2008 |
| 7341784 | Light management film and its preparation and use A light management film includes a first layer with a thermoplastic resin and a particular phosphonium sulfonate salt, and a second layer formed from a curable composition and having a refractive index of at least 1.5. The light management film exhibits reduced stat... | 03/11/2008 |
| 7334920 | Backlight module A backlight module (20) includes a plurality of light sources (24) and an optical sheet (21). The optical sheet includes a light incident surface (211), a light emitting surface (212), and a plurality of inverted rectangular pyrami... | 02/26/2008 |
| 7334934 | Light guide device and a backlight module using the same A light guide device includes a main body and a plurality of parallel elongate first V-shaped microstructures. The main body has an incident surface; an emitting surface adjoining the incident surface; and a reflecting surface opposite to the emitting surface. The f... | 02/26/2008 |
| 7330315 | Light-redirecting optical structures A plurality of microstructures is provided, with each microstructure having at least a first side and at least a second side terminating at a peak. At least some of the peaks can include an elevated portion to space the peaks away from adjacent optical sheets, surfa... | 02/12/2008 |
| 7320535 | Light control film A light control film having a refractive index n and an uneven, irregular surface pattern provides a reasonable level of light diffusion without a glare problem provided, for any cross-section perpendicular to the base plane of the film, the average of absolute valu... | 01/22/2008 |
