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Henry Morton, president of the Stevens Institute of Technology ; Said in 1880 about the light bulb
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| Number | Title | Issue Date |
| 8109666 | Light guiding member and linear light source apparatus using same A light guide member of the present invention is made of a light transmitting material. The light guide includes a light emitting surface 13, which extends in direction x and includes a lens surface 31 for converging light in direction y. The light gui... | 02/07/2012 |
| 8061883 | Illuminating devices using small PT sources including LEDs In one form, there is a luminaire for providing uniform color and brightness from multiple small light sources, which includes a shallow plate of transparent material having a first surface which is substantially flat, and a second surface which includes patterned p... | 11/22/2011 |
| 8033710 | Light guide plate for surface light source A plurality of mirror surfaces (5), which extend in a direction (X-axis direction) perpendicular to a light incident surface (2a), are formed side by side in a longitudinal direction (Y-axis direction) of the light incident surface (2a... | 10/11/2011 |
| 7976209 | Planar lighting device The planar lighting device includes, in addition to light sources, a light exit plane, a pair of light entrance planes formed on a pair of sides of the light exit plane, and a rear plane composed of a pair of inclined planes formed on a side opposite from the light ... | 07/12/2011 |
| 7972053 | Lighting apparatus A lighting apparatus provided in the form of a bulb for use in a solar lantern or other electrical device. The lighting apparatus includes a hollow light guide with a light reflective layer on the inside. A first and second light source such as an array of LEDs, LEC... | 07/05/2011 |
| 7946747 | Backlight unit A backlight unit is disclosed. The backlight unit includes a light source unit generating light, a beam profile changer at the side of the light source unit, a reflective plate under the beam profile changer, and an optical film positioned on the beam profile change... | 05/24/2011 |
| 7931396 | Backlight and display A backlight is provided for illuminating an at least partially transmissive display. The backlight includes a light source. A light guide receives the light from an edge surface and guides the light by total internal reflection. Groove structures which are located o... | 04/26/2011 |
| 7901125 | Wedge-shaped lighting device A wedge shaped lighting device includes a light source and a light guide plate disposed opposite to the light source, and the light guide plate includes a light entrance plane opposite to the light source and a light exit plane containing one side of the light entra... | 03/08/2011 |
| 7883258 | Planar illuminating device and display apparatus In order to realize a thin and simple-structured planar illuminating device which is capable of carrying out the regional light control, a backlight module 1 of the present invention includes a light guiding plate 2 including steps 21a, | 02/08/2011 |
| 7866872 | Light guide plate, light guide plate unit, and planar lighting device The light guide plate includes a light exit plane, two light entrance planes, two symmetrical inclined rear planes increasingly distanced from the light exit plane from the two light entrance planes toward a center of the light exit plane, a curved portion joining t... | 01/11/2011 |
| 7819570 | Optical plate and backlight module using the same An exemplary optical plate includes one or more transparent plate section. The transparent plate section includes a light output surface, a bottom surface, a plurality of spherical depressions, a plurality of protruding structures and one or more lamp-receiving port... | 10/26/2010 |
| 7810983 | Optical plate and backlight module using the same An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of enclosing V-shaped protrusions, a plurality of spherical protrusions, and a lamp-receiving portion. ... | 10/12/2010 |
| 7798700 | 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 in... | 09/21/2010 |
| 7784989 | LED backlight unit including light guide plate with fixing means An LED backlight unit has a substrate, a plurality of light emitting diodes disposed on the substrate, and a light guide plate is placed adjacent to the light source. A chassis fixes the light source and the light guide plate therein. Fixing means engagingly fit a s... | 08/31/2010 |
| 7771104 | Planar lighting device The absolute value of the light amount is increased by providing main light sources and auxiliary light sources on four sides of a light guide plate having a flat and rectangular light exit plane whereas the amounts of light emitted by LED chips of the main light so... | 08/10/2010 |
| 7572045 | Compact lighting system and display device A compact backlight system has a light-emitting panel (1) with a front wall (2), a rear wall (3) situated opposite thereto, a first edge surface (4) and, opposite thereto, a second edge surface (5) . A first light source (6)... | 08/11/2009 |
| 7572046 | Structure of optic film An optic film has a surface on which a plurality of rib-like micro light guides is formed. Each light guide includes a plurality of ridges, which are of different height and shows variation of height. Either a high ridge or a low ridge of the light guide is made a c... | 08/11/2009 |
| 7563014 | Planar light source device with heat spreader sheet A backlight unit including a light guide plate, a linear light source disposed in the light incident side of the light guide plate, a reflective sheet disposed in the rear side of the light guide plate, and a heat spreader sheet disposed in the rear side of the refl... | 07/21/2009 |
| 7490971 | Planar lighting device The planar lighting device includes linear light sources, a light guide plate having a flat light exit surface, a rear surface and parallel grooves formed in the rear surface for accommodating the light sources, respectively, and a support member for supporting the ... | 02/17/2009 |
| 7431492 | Light control member, surface light source device and display Primary light from primary light source (LED) is supplied toward a light an input face of an light control member. The light input face is provided with a plurality of projections for light input promotion. Each projection is composed of a generally spherical top po... | 10/07/2008 |
| 7422357 | Optical plate and backlight module using the same An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a first surface, a second surface, a plurality of encircling V-shaped protrusions and a lamp-receiving portion. The second surface is opposite to the first s... | 09/09/2008 |
| 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 |
| 7419293 | Light guide plate and backlight module using the same A backlight module (2) includes a light source (21) and a light guide plate (23). The light source includes a lamp (231) and two electrode cases (233), the two electrode cases engage with opposite ends of the lamp. The light guide ... | 09/02/2008 |
| 7401965 | Backlight module with light guide protrusion and liquid crystal display with same An exemplary backlight module (1) includes a light guide plate (10) and at least one point illuminator (12). The light guide plate includes a first side surface (102), and a protrusion (14) outwardly extending from the first side s... | 07/22/2008 |
| 7400805 | Compact light collection system and method A light collection system includes at least one light source, a light tunnel having reflective walls and a collimating plate at the light output end of the tunnel. The collimating plate includes an optical element array. The element array receives the light emitted ... | 07/15/2008 |
| 7380970 | Prism sheet employed in a backlight unit The present invention relates to a prism sheet employed in a backlight unit. The prism sheet according to one embodiment of the present invention comprises a coating layer having a resin transmitting the incident light from the outside; and a plurality of beads cont... | 06/03/2008 |
| 7378686 | Light emitting diode and side emitting lens The invention is an illumination system that incorporates a light emitting diode and a side-emitting light-recycling lens. The side-emitting light-recycling lens recycles part of the light internally generated by a light emitting diode back to the light emitting dio... | 05/27/2008 |
| 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 |
| 7371000 | Surface light source equipment and apparatus using the same A light emission part in the form of a point light source composed of LED, etc., and a light conductive plate, and the light emission part is arranged in opposition to a light incident surface of the light conductive plate. First diffusion patterns and second diffus... | 05/13/2008 |
| 7364340 | Backlight unit for flat panel display and flat panel display apparatus having the same A backlight unit for a flat panel display and a flat panel display apparatus having the same. The backlight unit for a flat panel display displaying a predetermined image includes: a light source which emits light; a light guide panel having an incident surface faci... | 04/29/2008 |
| 7364343 | Compact lighting system and display device A compact backlight system for illuminating a display device (12) has a light-emitting panel (1) with a front wall (2) and an opposed rear wall (3) and with edge surfaces (4, 5). At least one of the edge surfaces (4) is ligh... | 04/29/2008 |
| 7357548 | Light-guiding system comprising a number of light transmission rods A light-guiding system comprising a plate-like light-guiding member (1) provided with a lateral surface for coupling in light into said light-guiding member (1). The ends of a number of light transmission rods (6) are connected to said lateral s... | 04/15/2008 |
| 7357552 | Surface light source device and display An incidence face is formed at a corner portion of a light guide plate having a generally rectangular emission face, being supplied with primary light form a primary light source. The incidence face has a configuration which obtained by applying undulation-modificat... | 04/15/2008 |
| 7350955 | Back light source module A back light source module of a liquid crystal device is provided. The back light source module includes a backplate, a light source fixture disposed on the backplate. The back light source module also includes a first light source having a first normal line and dis... | 04/01/2008 |
| 7347610 | Light guide plate having light diffusing entities on light entering side A light guide plate has a light exiting side, a reflection side opposite to the light exiting side, and a light entering side. A plurality of miniature diffusing entities, each having a curved surface and two slant surfaces extending from the two ends of the curved ... | 03/25/2008 |
| 7338196 | Low profile light panel Low profile, thin panels using a layer of clear cast polymer with a reflective, mirrored backing and edges and a light diffusing face sheet, carrying light sources using fiber optic lenses or diodes on all or any sides thereof. The reflective sides direct the light ... | 03/04/2008 |
| 7334930 | Light guide element and backlight module using the same A light guide element (100) includes a light guide plate (20) and a frame (23). The light guide plate includes a first guiding portion (21), and a second guiding portion (22) adjoining the first guiding portion. The first guiding p... | 02/26/2008 |
| 7334932 | LED-tube hybrid lighting arrangement A lighting arrangement (1) of a space-saving configuration, including a fluorescent lamp (2) and at least one light emitting diode (6), which is suitable in particular for use for interior lighting of an aircraft. In this case the light emitting... | 02/26/2008 |
| 7331694 | Illuminating unit and projection type image display apparatus using the same An illuminating unit having a plurality of light emitting devices and collimators and a projection type image display apparatus using the same are provided. The illuminating unit includes: a plurality of light emitting devices which output light beams of predetermin... | 02/19/2008 |
| 7325960 | Structure of bar-like side-emitting light guide and planar light source module A bar-like side-emitting light guide suitable for re-directing an incident light beam such that the light beam emerges from each side of the structure. The guide structure includes a light guiding bar having an upper surface and a lower surface and extending along a... | 02/05/2008 |
