Class / Patent application number | Description | Number of patent applications / Date published |
362628000 | Shape | 25 |
20080198626 | Backlight module - A backlight module has a light guide plate and a plurality of light sources. The light guide plate includes a light exit surface, a plurality of light entrance surfaces round the light exit surface, and a plurality of light guide portions disposed on the bottom surface opposite to the light exit surface. The light guide portions corresponding to the same imaginary circle center constitute a concentric arc-shaped light guide portion set. The imaginary circle center of each light guide portion set is located at the outer side of the light entrance surfaces. Light rays projected to one of the light entrance surfaces from the imaginary circle center of each light guide portion set are guided to a light exit surface by the light guide portion set. The wavelength of the light ray projected by each light source is not equal to that of the light projected by another light source. | 08-21-2008 |
20080291697 | Light guide plate with protrusion,backlight module with same, and liquid crystal display with same - A light guide plate includes: a light emitting surface; a bottom surface opposite to the light emitting surface; a light incident surface perpendicularly connected with the light emitting surface; a first side surface perpendicularly connected with both the light incident surface and the light emitting surface; a second side surface opposite to the first side surface; two protrusions outwardly extending from the first side surface; and two protrusions outwardly extending from the second side surface. A thickness of each protrusion of the first side surface decreases with increasing distance away from the light incident surface, and a thickness of each protrusion of the second side surface also decreases with increasing distance away from the light incident surface. | 11-27-2008 |
20090086509 | LIGHT GUIDE PLATE FOR SURFACE LIGHT SOURCE - A plurality of mirror surfaces ( | 04-02-2009 |
20090097277 | PLANAR LIGHTING DEVICE - A planar lighting device is capable of keeping the light entrance plane of the light guide plate spaced a constant distance from the light source and the light guide plate spaced a constant distance from the liquid crystal display panel even when the light guide plate expands, contracts or warps. This prevents break of the light source, decrease of light admission efficiency, occurrence of uneven brightness, and break of the liquid crystal display panel and permits a thin, larger, and lightweight design. The planar lighting device includes a fixing member for keeping them spaced from each other, a housing for accommodating the light source and the light guide plate, a sliding mechanism to elastically hold the fixing means against the housing while keeping the light source spaced a constant distance from the light guide plate, and a reinforcing member for reinforcing the housing. | 04-16-2009 |
20090109706 | OPTICAL GUIDING DEVICE AND BACKLIGHT MODULE USING SAME - An exemplary optical guiding device for optically coupling a plurality of light beams having at least one laser beam, includes a light coupling lens, a light collimating lens, and an optical fiber. The light coupling lens and the light collimating lens are positioned apart along an optical path. The optical fiber is optically coupled to the light couple lens. External laser beam introduced by the optical fiber are optically coupled by the light coupling lens for collimating and mixing the light beams, then collimated by the at least one light collimating lens, and finally emitting out. A backlight module using the optical guiding device with colored semiconductor lasers and light transferring device are also provided. The backlight module has a good color performance, such as high color saturation. | 04-30-2009 |
20090129121 | ILLUMINATION DEVICE - A lighting device is provided that surface-emits the light evenly with less number of luminous bodies by comprising a transparent body | 05-21-2009 |
20090316436 | Gaming machine - The present invention is a gaming display using a gaming display including a light guide plate having at least two flat surfaces, and a light emit member for emitting light to the light guide plates, wherein the light guide plate is sectioned by a groove for avoiding interference of light from the light emit member. Besides, the present invention is a gaming display including a light guide plate having at least two flat surfaces, and a light emit member for emitting light to the light guide plates, wherein the light guide plate is sectioned by a light shielding member for blocking light to enter another section of the light guide plate. | 12-24-2009 |
20100080019 | PLANAR LIGHTING DEVICE - A planar lighting device comprises: a light guide plate including a concave rectangular light exit plane, two light entrance planes containing two opposite sides of the light exit plane and disposed opposite each other, two symmetrical inclined planes opposing to the light exit plane such that their distance from the light exit plane increases with the increasing distance from the two light entrance planes toward the center of the light exit plane, a curved portion connecting the two inclined planes; two light sources respectively disposed opposite the two light entrance planes for emitting light to enter the light into the light guide plate through the light entrance planes; and sliding mechanisms allowing the light sources to slide in a direction parallel to the light entrance planes of the light guide plate to absorb the expansion and contraction of the light sources along the length thereof. | 04-01-2010 |
20100128496 | LIGHT GUIDE DEVICE - A light guide loop includes a number of optical coupling structures and a number of luminaries. Each of the optical coupling structures includes a light incident surface and a reflecting surface. The luminaries are respectively facing the light incident surfaces of the optical coupling for emitting light to the optical coupling structures. | 05-27-2010 |
20100135042 | Light Guide Plate Microstructure - A light guide plate microstructure is provided. The light guide plate microstructure is located on at least one surface of the light guide plate and has a plurality of groove units. Each groove unit has multiple V-shaped grooves, and each V-shaped groove has an apex angle within a range of about 80°-160°. Furthermore, at least two of the V-shaped grooves of a groove unit have different apex angles. | 06-03-2010 |
20100135043 | COMPOSITE LIGHT GUIDING CURVED SURFACE STRUCTURE - The present invention provides a composite light guiding curved surface structure, comprising a structure body and at least one light source. The structure body comprises a light-receiving surface being provided with a plurality of curved surfaces formed thereon, each of which being provided with a plurality of micro lenses. Each micro lens is further provided with a plurality of sub-wavelength anti-reflecting structures. The sub-wavelength anti-reflecting structures also cover the entire curved surface among lenses. At least one light source is disposed on one side of the light-receiving surface to generate a light field projecting to each of the curved surfaces on the light-receiving surface. In the present invention, the micro lens is capable of increasing the diffusing angle for light diffusion; meanwhile, the sub-wavelength anti-reflecting structures are capable of increasing the light transmission efficiency to reduce loss of light at the interface and enhance the utilization of light. | 06-03-2010 |
20100226147 | LIGHTWEIGHT LIGHT GUIDE PLATE AND BACKLIGHT MODULE THEREOF - A lightweight light guide plate and a backlight module thereof are provided. The backlight module includes a light guide plate whose thickness gradually reduces from four edges to a center point of a light guide plate body to form a concave, an optical film group disposed on a plane of the light guide plate body, net points disposed on the concave, in which a unit area density of the net points gradually increases from the four edges to the center point of the light guide plate body respectively, LEDs respectively disposed at the four edges of the light guide plate body, a reflector corresponding to the concave of the light guide plate body, and a back frame having the reflector disposed thereon. The weight of the light guide plate body and backlight module thereof can be reduced, and the cost of materials for the light guide plate can be reduced. | 09-09-2010 |
20100309688 | LIGHT COLLIMATING LIGHTGUIDE - A backlight is provided for illuminating an at least partially transmissive display. The backlight includes a light source. A lightguide receives the light from an edge surface and guides the light by total internal reflection. The lightguide also has features that exist on one or more lightguide surfaces in the shape of a triangular wedge that reduces the range of angles in the vertical direction within the lightguide. This arrangement enables improved angular performance from out-coupled light. | 12-09-2010 |
20110228562 | EFFICIENT COLLIMATION OF LIGHT WITH OPTICAL WEDGE - Embodiments of optical collimators are disclosed. For example, one disclosed embodiment comprises an optical waveguide having a first end, a second end opposing the first end, a viewing surface extending at least partially between the first end and the second end, and a back surface opposing the viewing surface. The viewing surface comprises a first critical angle of internal reflection, and the back surface is configured to be reflective at the first critical angle of internal reflection. Further, a collimating end reflector comprising a faceted lens structure having a plurality of facets is disposed at the second end of the optical waveguide. | 09-22-2011 |
20110242849 | THIN DOUBLE-SIDED LIGHT GUIDE PLATE - The present invention provides a light guide plate having an input surface for receiving light from a light source, a micro-patterned output surface for emitting light, and a micro-patterned bottom surface opposing to the output surface, made in steps comprising: extruding a first resin into the nip between a first pressure roller and a first patterned roller to form a first layer. Extruding a second resin into the nip between a second pressure roller and a second patterned roller and onto the unpatterned surface of the first layer to form a second layer. The second layer having a pattern transferred from the second patterned roller; the combined first and second layers form an optical sheet comprising a plurality of light guide plate patterns and cutting and finishing the optical sheet into a plurality of double-sided light guide plates having the specified length and width dimensions. | 10-06-2011 |
20110242850 | DOUBLE-SIDED LIGHT GUIDE PLATE MANUFACTURED WITH MICRO-PATTERNED CARRIER - The present invention provides a light guide plate having an input surface for receiving light from a light source, a micro-patterned output surface for emitting light, and a micro-patterned bottom surface opposing to the output surface, made in steps comprising: extruding a resin into the nip between a patterned roller and a patterned carrier film at a nip pressure P | 10-06-2011 |
20110242851 | DOUBLE-SIDED LIGHT GUIDE PLATE MANUFACTURED WITH PATTERNED ROLLERS - The present invention provides a light guide plate having an input surface for receiving light from a light source, a micro-patterned output surface for emitting light, and a micro-patterned bottom surface opposing to the output surface. The invention provides extruding a resin into the nip between a first patterned roller and a second patterned roller at a first patterned roller surface temperature T | 10-06-2011 |
20110317448 | Low profile graphic display device and method - A low profile backlit graphic display device enables a user to display an illuminated graphic hung from the user's neck. The device comprises a housing, a light source assembly, and a number of optical element panels. The housing comprises housing edging, an assembly-receiving cavity, and a coupler-receiving aperture. The housing edging defines a panel-receiving section in anterior adjacency to the assembly-receiving cavity. The light source assembly is receivable in the assembly-receiving cavity. The panels may include a reflector panel, a light guide panel, and an interchangeable graphic panel. The panels are positionable in anterior adjacency to the assembly-receiving cavity within a panel-receiving section. The graphic panel is positionable in anterior adjacency to the light guide panel for illuminating a graphic by way of panel-guided light. A lanyard assembly is attachable to the coupler-receiving aperture and wearable about the neck for enabling the user to display a neck-hung illuminated graphic. | 12-29-2011 |
20120127758 | LIGHT GUIDE MEMBER - A light guide member has a main body formed of material having translucency. The main body extends from a first end to a second end in an extending direction. The first end is configured to have light from a light source enter. A vertical cross-section of the main body in a plane perpendicular to the extending direction is formed in a shape of a fan. | 05-24-2012 |
20140133184 | LIGHT GUIDE PLATE, BACKLIGHT MODULE AND DISPLAY DEVICE - A light guide plate for the edge-lit backlight module comprises a first recessed portion and a second recessed portion. The first recessed portion is provided at the bottom of a light incident end of the light guide plate for accommodating a light source. The second recessed portion is provided at the top of the light incident end of the light guide plate, corresponding to the first recessed portion. | 05-15-2014 |
20140233261 | DISPLAY DEVICE AND MULTI-DISPLAY DEVICE - A display device ( | 08-21-2014 |
20140241009 | SPREAD ILLUMINATION APPARATUS - A spread illumination apparatus includes: a light source; and a light guide plate having a light entrance surface on which the light source is disposed, and a light exit surface through which light introduced from the light entrance surface is emitted, wherein the light guide plate includes a light entrance wedge portion which has an inclined surface and of which thickness is thinner from the light entrance surface side toward the light exit surface side, the inclined surface includes a first, a second, and a third inclined surface portions, and an average inclination angle of the second inclined surface portion at an arbitrary cross section perpendicular to the light entrance surface and the light exit surface along the light entrance surface in a longitudinal direction is configured to be larger than average inclination angles of the first inclined surface portion and the third inclined surface portion. | 08-28-2014 |
20150029754 | ANAMORPHIC LIGHT GUIDE - A backlight system for a display is described. The system can include an anamorphic light guide that comprises a light receiving portion, a light diverting portion, and a light output portion. The light receiving portion receives light having an area illuminating a first aspect ratio and the output light portion outputs light having an area illuminating a second aspect ratio, the second aspect ratio greater than the first aspect ratio by at least an order of magnitude. The light input face is substantially perpendicular to light output face. The etendue of the light is substantially preserved. | 01-29-2015 |
20150062968 | Luminaire and Container Holder - A luminaire of the embodiment includes: a light guide portion having a ring shape; a light-emitting portion having a light-emitting element and configured to irradiate the light guide portion with light; and an incident portion provided on an outer peripheral surface of the light guide portion at one end thereof and facing the light-emitting portion at the other end thereof. An angle between an axial line of the incident portion and a line passing through a center of a connecting portion between the incident portion and the light guide portion and coming into contact with an inner peripheral surface of the light guide portion exceeds 0°. | 03-05-2015 |
20160053978 | Flashing Treetop Star - A flashing treetop star includes: a mounting base, a light guide unit, a support member, and a circuit module. The light guide unit includes two shaped light-transmitting plates that are mounted to the mounting base. The support member is in the form of a cone and coupled to an underside of the mounting base. The circuit module includes two light-emitting elements respectively corresponding to the light-transmitting plates and a control circuit that controls each of the light-emitting elements to get lightening and darkening in a given sequence. As such, when a power supply is conducted on, each of the light-emitting elements gives off light transmitting to the interiors of the light-transmitting plates to make each of the light-transmitting plates to show an effect of light flashing in response to the lightening and darkening of the corresponding one of the light-emitting elements. | 02-25-2016 |