| Entries |
| Document | Title | Date |
|---|
| 20080198625 | LIGHT GUIDE SHEET AND MOVABLE CONTACT UNIT AND SWITCH USING THE SAME - The disclosed relates to a light-guide-sheet used in operation panel of a various electronic equipment, and a movable-contact-unit and a switch using the same, which have a simplified structure free from uneven illumination and a cheap cost price. Therefore, the light-guide-sheet is provided with the light-guide-member including an inlet, a generally strip-shaped guide-path coupled with the inlet, and generally circularly and irregularly shaped light-emitters coupled with the guide-path, each formed from a polymer having an index of refraction different from that of base-film and formed in grooves provided on a base-film. | 08-21-2008 |
| 20080239754 | BACKLIGHT ASSEMBLY, DISPLAY APPARATUS HAVING THE SAME AND METHOD FOR MANUFACTURING THE SAME - A backlight assembly, a display apparatus and a method for manufacturing the backlight assembly. The backlight assembly includes a light-guide plate, a point light source unit, a fixing plate and a cover. The point light source unit includes at least one point light source disposed at a side of the light-guide plate, and a flexible printed circuit board (FPC) disposed under the light-guide plate and having the point light source. The fixing plate is disposed under the FPC and has at least one first combining member. The cover is disposed under the fixing plate and has a first surface on which at least one second combining member is formed. The first and second combining members are combined with each other. Thus, assembling time may be decreased, heat may be efficiently dissipated, and manufacturing costs may be decreased. | 10-02-2008 |
| 20080273351 | Light Source Device and Vehicle Lighting Device - An LED light source device and an illumination device using the same, including vehicle lighting devices, can have a light weight and thin profile and can form a desired light distribution pattern while employing a simple configuration. The light source device can include a plate shaped light guide member made of a material that is transparent in a visible range. The light guide member can have a front surface serving as a light emitting surface and having a plate shape, and a rear surface having a luminance control element for controlling a luminance distribution on the light emitting surface. A point or linear light source facing towards an end surface of the light guide member can be provided. The luminance control element controls light reaching the element from the end surface of the light guide member and configures the luminance distribution on the light emitting surface, the luminance distribution being obtained by reducing a light distribution pattern to be projected (and in some cases horizontally and vertically reversing the pattern). | 11-06-2008 |
| 20080285306 | Image Display Apparatus and In-Vehicle Image Display Apparatus - An image display apparatus has one display screen configured to display images corresponding to a plurality of observers. The image display apparatus comprises an illumination means for emitting a first light flux and a second light flux in at least two different directions in a time sharing manner, and a transmissive display element configured to display in a time sharing manner a first image using the first light flux emitted from the illumination means as illumination light and a second image using the second light flux as illumination light, and the illumination means includes a first light source | 11-20-2008 |
| 20080316768 | Flat Panel Lens - A light guide with input and output faces | 12-25-2008 |
| 20080316769 | Spread illuminating apparatus - A spread illuminating apparatus includes an LED, a transparent resin plate and a light reflecting sheet, wherein the transparent resin plate includes slits adapted to have inserted therein flap portions of the light reflecting sheet, and wherein an adhesive tape with flexibility is placed along at least one flap portion of the light reflecting sheet so as to cover at least one slit of the transparent resin plate, whereby the light reflecting sheet is prevented from warping or undulating in spite of difference in thermal expansion coefficient between the materials of the transparent resin plate and the light reflecting sheet, and also whereby light emitted from the LED and traveling in the transparent resin plate is totally reflected by the flap portions and therefore prevented from leaking from the outer side surfaces of the transparent resin plate. | 12-25-2008 |
| 20080316770 | Backlight and light guide plate, method of manufacturing diffuser and light guide plate, and liquid crystal display apparatus - The present invention relates to a backlight and a light guide plate, a method of manufacturing a diffuser and the light guide plate, and to a liquid crystal display apparatus, all enabling a cost reduction by reducing the parts count and curtailing unnecessary manufacturing processing. A diffuser | 12-25-2008 |
| 20090003016 | Light Guide, Lighting Device and Image Reading Device - To provide a rod-like light guide and a line lighting device including the rod-like light guide, both of which are easy to include in an image reading device, a contact-type image sensor and an image reading device. For instance, a protruding portion having a flat or curved surface is formed by grinding an end face of a rod-like light guide in a longitudinal direction while leaving at least 80% of the surface area of the end face, and a reflective surface is formed by bonding a heat transfer film to the protruding portion. Thus, even if a portion of the protrusion portion melts when performing thermal processing on the heat transfer film, the portion will not jut out beyond a cross-sectional area of the rod-like light guide, and the rod-like light guide can be easily contained in a case. | 01-01-2009 |
| 20090016079 | Planar lighting apparatus - A planar lighting apparatus is provided in which thinning is promoted while higher and more uniform brightness is achieved by maintaining an LED on a light-incoming face of a light guide plate easily and stably. A planar lighting apparatus | 01-15-2009 |
| 20090034292 | ILLUMINATION ASSEMBLY INCLUDING WAVELENGTH CONVERTING MATERIAL - Illumination assemblies, components, and related methods are described. An illumination assembly can include at least one solid state light-emitting device, and at least one light guide including a light homogenization region configured to receive light emitted by the solid state light-emitting device and including a light output boundary. The light homogenization region substantially uniformly distributes light outputted over the light output boundary. A wavelength converting material can be disposed within at least a portion of the light homogenization region. In some assemblies, a light extraction region can be configured to receive light from the light output boundary of the light homogenization region, and can have a length along which received light propagates and an emission surface through which light is emitted. The light extraction region can include a wavelength converting material disposed within at least a portion of the light extraction region. | 02-05-2009 |
| 20090046480 | BACKLIGHT MODULE AND DISPLAY USING THE SAME - A backlight module applied to a display and including a linear light source and a light guide plate (LGP) is provided. The LGP includes a light emitting surface, a bottom surface, a light incident surface, a first side surface, a second side surface and a microstructure. The bottom surface is opposite to the light emitting surface. The light incident surface is in contact with the light emitting surface and the bottom surface. The linear light source is disposed adjacent to the light incident surface. The first side surface is opposite to the light incident surface and in contact with the light emitting surface and the bottom surface. The second side surface is in contact with the light emitting surface, the bottom surface, the light incident surface and the first side surface. The microstructure is formed on the second side surface and adjacent to the light incident surface. | 02-19-2009 |
| 20090086508 | Thin Backlight Using Low Profile Side Emitting LEDs - Backlights containing low profile, side-emitting LEDs are described that have improved brightness uniformity. In one embodiment, the backlight comprises a solid transparent lightguide with a plurality of openings in a bottom surface of the lightguide, each opening containing a side-emitting LED. Prisms or other optical features are formed in the top wall of each opening to reflect light in the lightguide towards a light output surface of the lightguide so that the side-emitting LEDs do not appear as dark spots at the output of the backlight. To avoid any direct emission from the sides of the LED toward the output surface of the lightguide appearing as bright areas, optical features are formed at the edges of the opening or in the output surface of the lightguide so that direct emission light is not output from the lightguide. Substantially identical cells may be formed in the lightguide using cellular walls around one or more LEDs. | 04-02-2009 |
| 20090103327 | LIGHT GUIDE PLATE - The light guide plate includes a rectangular light exit plane, a light entrance plane containing one side of the light exit plane, and a rear plane located on the side opposite from the light exit plane and scattering particles for scattering light propagating inside the light guide plate dispersed therein. The light guide plate has two layers, a first layer located on the side closer to the light exit plane and having a first particle density of the scattering particles, and a second layer located on the side opposite from the light exit plane and having a second particle density that is greater than the first particle density of the first layer. Npo and Npr satisfy Npo| 04-23-2009 | |
| 20090103328 | PLANAR LIGHTING DEVICE - The planar lighting device includes a light guide plate including two symmetrical, inclined planes increasingly distanced from the light exit plane with the increasing distance from the light entrance planes toward the center, a curved portion joining the inclined planes, and scattering particles dispersed therein; light sources; a housing; a securing unit securing the light sources and light guide plate to keep their distance constant, and a sliding mechanism allowing the securing unit to slide. Distance between the light entrance planes, thicknesses at the light entrance planes and at the central curved portion, its radius of curvature and taper of the inclined planes are all held within respective given ranges as well as scattering particle diameter and density, light use efficiency and middle-high ratio of the brightness distribution. A thin planar lighting device yielding high light use efficiency with a minimized brightness unevenness and a high-in-the-middle brightness distribution. | 04-23-2009 |
| 20090237958 | Low-clearance light-emitting diode lighting - A low-clearance light-emitting diode lighting includes a light guide panel having side surfaces and a front surface opposing a back surface, a plurality of light-emitting diodes positioned on at least two side surfaces of the light guide panel, a reflecting plate at the back surface of the light guide panel, reflectors having an inclined angle, and a metal frame for supporting the reflecting plate and the light guide panel, wherein each of the plurality of light-emitting diodes is positioned between one of the at least two side surfaces and one of the reflectors such that light from the plurality of light-emitting diodes is reflected toward the at least two side surfaces. | 09-24-2009 |
| 20090284985 | ILLUMINATION APPARATUS AND METHODS - Disclosed are apparatus and methods for illuminating a display. In certain embodiments, the illumination apparatus includes a light guide that receives light from a light generator along an edge of the light guide and directs the received light via light extractor features (e.g., grooves) towards a display. The light guide includes at least two sets of light extractor features that are rotated with respect to each other so as to reduce a shadowing effect on the display when the display is viewed from within a specific range of viewing angles. In further embodiments, the spacing or orientation of each or one of the extractor feature sets may also be adjusted so that other visual artifacts, such as a Moiré effect, are reduced. | 11-19-2009 |
| 20090284986 | LIGHT GUIDE PLATE AND BACKLIGHT MODULE - A light guide plate has a light emitting surface, a bottom surface and a first and a second light incident surfaces connected to the light emitting surface and the bottom surface. The bottom surface approaches the light emitting surface gradually along a first direction away from the first light incident surface and along a second direction away from the second light incident surface, or is away from the light emitting surface gradually along the first direction and the second direction. The light guide plate includes a plurality of first and second hollow portions disposed on the light emitting surface. The first hollow portions are arranged on a first axis. The second hollow portions are arranged on a second axis. A plurality of orthogonal projections of the second hollow portions formed on the first axis and the first hollow portions are alternately arranged. | 11-19-2009 |
| 20090290378 | Image Display Apparatus - An image display apparatus comprising a light guide plate, a light-emitting diode (LED), a first transparent substrate and a second transparent substrate is provided. Light generated from the LED is guided into the light guide plate through the edge thereof, and outwardly projected through the two opposite surfaces of the light guide plate. Thus, a pattern being disposed in front of the first transparent substrate or the second transparent substrate would be lighted up. | 11-26-2009 |
| 20100053997 | LIGHT GUIDE UNIT AND BACKLIGHT MODULE - A light guide unit including a light guide plate and a plurality of rod lenses is provided. The light guide plate has a first surface, a second surface opposite to the first surface, and a light incident surface connecting the first surface and the second surface. The light guide plate further has a plurality of diffusion net points located at the second surface. The rod lenses are disposed on the first surface. Each of the rod lenses extends along a first direction and has a curved surface curving in a second direction. The rod lenses are arranged along the second direction. Pitches of the adjacent diffusion net points in the first direction are smaller than pitches of the adjacent diffusion net points in the second direction. A backlight module using the light guide unit is also provided. | 03-04-2010 |
| 20100061118 | Lens Beam-Concentrating Device - A lens beam-concentrating device comprises at least one light-emitting diode light source disposed on a lateral edge of a light guide plate. The light source emits light rays toward the light guide plate, after the light rays are directed by the light guide plate, a parallel light beam will emit from an emission surface of the light guide plate to form a plane light source. A first lens element and a second lens element are arranged in front of the light emission surface of the light guide plate for adjusting and collimating the parallel beam, so as to ensure the light rays to emit out of the beam-concentrating device parallel to each other. | 03-11-2010 |
| 20110051459 | OPTICALLY COUPLED LIGHT GUIDE - An optically coupled light guide includes a light source having a surface defined by a channel, a light guide and an optical gel coupling the channel of the light source to the light guide. | 03-03-2011 |
| 20110085352 | LIGHT EMITTING DEVICE, SURFACE LIGHT SOURCE, LIQUID CRYSTAL DISPLAY DEVICE, AND METHOD FOR MANUFACTURING LIGHT EMITTING DEVICE - A light emitting device includes: a substrate having a main surface; a phosphor layer provided on the main surface and containing an LED element that emits primary light and a fluorescent particle that absorbs a part of the primary light and emits secondary light; and a transparent resin layer having a refractive index n and covering the phosphor layer. The transparent resin layer has an outer circumferential surface that forms a boundary between the transparent resin layer and the atmosphere. When a minimum circumference that includes the overall phosphor layer and is concentric with the outer circumferential surface has a radius r in a cut surface where at least a part of the outer circumferential surface takes a shape of an arc having a radius R, a relationship of R>r·n is satisfied. With such configuration, the light extraction efficiency is enhanced. | 04-14-2011 |
| 20120170316 | LIGHT GUIDE PANEL AND FABRICATING METHOD THEREOF - A light guide panel (LGP) having a surface which has a first direction and a second direction vertical with each other is provided. The LGP includes an optical element array and a rubbing portion. The optical element array is disposed on the surface of the LGP and extended in the first direction. The rubbing portion is disposed on the surface of the LGP and extended in the second direction. Moreover, a fabricating method of the LGP by utilizing a cutting tool is also provided. | 07-05-2012 |
| 20130135901 | ILLUMINATION DEVICE AND DISPLAY DEVICE - Disclosed is an illumination device that makes it possible to improve the efficiency of the work of processing light-guide panels. Said illumination device is provided with: a light-guide panel ( | 05-30-2013 |
| 20130223101 | LIGHT GUIDE PLATE AND PLANAR LIGHTING DEVICE - The light guide plate includes two or more layers superposed on each other in a direction substantially perpendicular to a light exit surface and containing scattering particles at different particle concentrations. The thicknesses of the two or more layers in the direction substantially perpendicular to the light exit surface are changed so that the combined particle concentration of the light guide plate has, in a direction perpendicular to at least one light incidence surface, a first local maximum value on at least one side closer to the at least one light incidence surface and a second local maximum value located at a position farther from the at least one light incidence surface than at least one position of the first local maximum value and being larger than the first local maximum value. | 08-29-2013 |
| 20130272030 | LIGHT GUIDE PLATE INCLUDING OPTICAL FIBERS AND METHOD OF MANUFACTURING SAME - A light guide plate includes a number of optical fibers positioned side by side and transparent curable glue adhering the optical fibers together. The optical fibers and the curable glue cooperatively form a light incident surface and a light output surface connected to the light incident surface. The light output surface defines light output holes. | 10-17-2013 |
| 20140347888 | LIGHT GUIDING DEVICE AND A LIGHTING ASSEMBLY INCORPORATING THE SAME - A light guiding device includes a light input surface, a light output surface extending from a first edge of the light input surface, a connecting surface extending from a second edge of the light input surface, and a reflecting surface interconnecting the output surface and the connecting surface. Relationships of θ<φ, θ<θ | 11-27-2014 |
| 20150070935 | LIGHT GUIDE PLATE - A large-sized thin light guide plate has a first layer on a light exit surface side and a second layer on a rear surface side containing scattering particles at a higher particle concentration than the first layer. Thicknesses of the layers in a direction substantially perpendicular to the light exit surface change to change a combined particle concentration. The scattering particles, obtained by mixing a particle group with an average particle size Ds of less than 7 μm having one or more local maximum values and a particle group with an average particle size Db of more than 7 μm having one or more local maximum values, satisfy 1 μm≦Ds<7 μm, 7 μm| 03-12-2015 | |
| 20160103269 | ILLUMINATION LIGHT GUIDE - A light guide of a vehicular lamp includes a first light guide body that guides the incident light from a stationary side light source, and a second light guide body that guides the incident light from a movable side light source. The first light guide body is formed in a twisted bow shape. A reflection portion is formed on the rear surface of each of the first and second light guide bodies to reflect the incident light toward the front surface, and an emission portion is formed on the front surface to emit the reflected light. First and second side surfaces of each light guide body include a curved surface that is indicated as a curved line on a cross section of the light guide body. A side step is formed on the first side surface of the first light guide body to reflect the incident light toward the second side surface. | 04-14-2016 |
| 20160154167 | LIGHT GUIDE PLATE AND MANUFACTURING METHOD THEREOF | 06-02-2016 |
