Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 8177408 | Light filtering directional control element and light fixture incorporating the same In one embodiment of this invention, a light filtering directional control element provides increased spatial color or luminance uniformity and desired angular color uniformity and customizable light re-direction properties. In one embodiment of this invention, a li... | 05/15/2012 |
| 8177409 | Light guide sheet and electronic equipment utilizing the same A light guide sheet of the present invention includes a silicone rubber sheet 1 and plural printed mark parts 3a to 3d printed on the front surface of the silicone rubber sheet 1. The silicone rubber sheet 1 has a vis... | 05/15/2012 |
| 8152352 | Optic system for light guide with controlled output A light guide with optics accurately controls the light exiting the guide. The device achieves accurate control of the reflected light by extracting light from a limited area of the light guide. The configuration of the reflectors used for the selective extraction d... | 04/10/2012 |
| 8147111 | Light guide plate and backlight module A light guide plate including a body and a plurality of prism microstructures is provided. The body has a bottom surface, a light emitting surface opposite to the bottom surface, and a plurality of side surfaces. The light emitting surface has a central area and at ... | 04/03/2012 |
| 8118467 | Light guide plate and edge-lighting type backlight module A light guide plate includes a first surface, a second surface opposite the first surface, a light incident surface, and a plurality of lenticular lenses and microstructure assemblies. The light incident surface is connected with the first surface and the second sur... | 02/21/2012 |
| 8047698 | Light guide plates and backlight module A light guide plate includes a light discharge surface, a light diffusing surface, a light incident surface, and a plurality of scattering dots. The light diffusing surface is located opposite to the light discharge surface. The light diffusing surface has a first p... | 11/01/2011 |
| 8042983 | Light guide plate for display device A light guide plate according to the present invention includes an incident plane into which a light flux from a light source is incident, and a plurality of prisms having reflection planes reflecting the light flux incident from the incident plane, wherein the refl... | 10/25/2011 |
| 8021033 | Light guide member, planar light source device provided with the light guide member, and display apparatus using the planar light source device A light guide member laminated on the upper face of a luminous device mounting substrate on which a luminous device is mounted and which is for diffusing and guiding upward light emitted from the luminous device. The light guide member includes a light reflecting po... | 09/20/2011 |
| 8016472 | Optical plate and backlight module using the same An optical plate has a first surface and a second surface opposite to the first surface. The first surface defines a plurality of elongated arcuate troughs therein. The second surface defines a plurality of triangular pyramid depressions and a plurality of hexagonal... | 09/13/2011 |
| 8011819 | Light guide plate and method for manufacturing the same, and backlight module using the same A light guide plate includes a light input surface, a light output surface adjoining the light input surface, and a reflecting surface opposite the light output surface. One of the light output surface and the reflecting surface defines a plurality of scattering mic... | 09/06/2011 |
| 7918599 | 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 microstructures and a lamp-receiving portion. The lig... | 04/05/2011 |
| 7905650 | Backlight suitable for display devices A backlight suitable for use in a display device includes an illumination device having at least one light source and a back reflector stack including a reflective layer and a transparent layer having substantially uniform refractive index and having a plurality of ... | 03/15/2011 |
| 7883255 | Electronic device including optical guide provided with sequentially illuminated optical extractors There is disclosed a timepiece (40) including optical means for forming a decorative pattern, in the form of a figurative image, in response to an action by the user. The optical means forming a figurative image include an optical guide (1, 51) having ... | 02/08/2011 |
| 7883256 | Electronic device including optical guide provided with at least two groups of interlaced optical extractors There is disclosed a timepiece (40) including optical means for forming a decorative pattern, in the form of a figurative image, in response to an action by the user. The optical means forming a figurative image include an optical guide (1, 51) having ... | 02/08/2011 |
| 7883254 | Light guide plate, production method therefor, and surface light source device provided with it A light guide plate capable of omitting use of a directional sheet such as a prism sheet as much as possible and ensuring a viewing angle without decreasing brightness in the vertical direction. A light guide plate 1 is used for an edge-light surface illumina... | 02/08/2011 |
| 7815358 | Ultra-thin backlight A backlight for a display device, such as a liquid crystal display device, includes a light guiding plate having a front and a rear surface. The front and rear surfaces may be parallel to one another, or may instead be non-parallel. To the extent that such surfaces ... | 10/19/2010 |
| 7815359 | Spread illuminating apparatus A transparent resin plate includes a plurality of slits formed intermittently and located along the border line between a housing frame portion and a light conductor plate portion, the slits includes either or both of respective first optical path converting portion... | 10/19/2010 |
| 7766531 | Edge-lit optical display with fluted optical plate A display system includes a display panel and a backlight disposed behind the display panel. The backlight has a light guide and at least one light source that directs light into an edge of the light guide. The light guide comprises a front layer facing the display ... | 08/03/2010 |
| 7766532 | Light guide for surface light source device and surface light source device A light guide (3) for a surface light source used to constitute a surface light source in combination with a primary light source (1) and guiding light emitted from the primary light source (1). The light guide (3) has a light incident en... | 08/03/2010 |
| 7762704 | Optimized distribution of light extraction from an edge lit light source An edge-lit panel features extractor patterns that produce uniform illumination. The effective density of extractor pattern pixels is adjusted to achieve uniform illumination. A method of adjusting the effective pixel density of extractor pattern pixels to achieve u... | 07/27/2010 |
| 7748862 | Liquid crystal display apparatus A liquid crystal display apparatus includes a light guide plate, a bottom chassis, a liquid crystal display panel disposed on the light guide plate to display an image, a flexible printed circuit board connected to the liquid crystal display panel and outwardly bent... | 07/06/2010 |
| 7736045 | Area light source and lightguide used therefore A plate-shaped light guide for a planar light source device that guides a light emitted from a primary light source includes a light incident end face, a light emitting face and a back surface on the opposite to the light emitting face, wherein a plurality of first ... | 06/15/2010 |
| 7708445 | Light guide device and backlight module using the same A light guide device (21) includes an incident surface (211), an emitting surface (212) and a plurality of protrusions (212a). The incident surface is configured so as to allow an incident light to pass therethrough. The emitting s... | 05/04/2010 |
| 7708444 | Surface light source device A primary object of the present invention is to provide a surface light source device attaining a homogenous luminance distribution on a light emitting surface of a light guiding plate in which a dot light source having a high directivity of emitted light is employe... | 05/04/2010 |
| 7699517 | Light emitting diode based surface lighting device An LED surface lighting device (100) comprises a plurality of LED light source modules (120) assembled together side-by-side. Each of the LED light source modules comprises a light guiding plate (122) and at least one LED (124). The light... | 04/20/2010 |
| 7690830 | Flat lighting device and liquid crystal display device The present invention makes a radiation angle of light at a portion of a light guide plate in front of an LED formed on one edge of a light guide plate and a radiation angle of light at a corner portion of the light guide plate equal to each other as much as possibl... | 04/06/2010 |
| 7556417 | 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 microstructures, and at least a lamp-receiving portion. The bottom surface is opposite to the light ... | 07/07/2009 |
| 7527410 | Backlight unit An optical sheet includes a light scattering layer which scatters light made incident from an incident surface to an emission surface side and a plurality of light reflecting portions which reflect light scattered by the light scattering layer to the light scatterin... | 05/05/2009 |
| 7510315 | Light guide plate having a plurality of protrusions and backlight module having same An exemplary light guide plate (23) has a light incident surface (231); at least one side surface (232), the side surface being connected with the light incident surface; a light emitting surface (233), orthogonal connected with the side ... | 03/31/2009 |
| 7458710 | Backlight unit using optical fibers A backlight unit using optical fibers includes a light source, an optical medium tube having a light incident surface to optically couple light from the light source into the optical medium tube and a light emitting surface to emit light guided by the optical medium... | 12/02/2008 |
| 7441934 | Lamp system A lamp system has a first light source which radiates light of a first chromaticity coordinate and a second light source which radiates light of a second chromaticity coordinate. The lamp system also includes an optical component for additively mixing the light of t... | 10/28/2008 |
| 7441936 | Light guide plate with high-density diffusing dots An exemplary light guide plate includes a light input surface, a bottom surface, a light output surface opposite to the bottom surface, and a plurality of dots. The dots are arranged on the bottom surface in series of adjacent columns parallel to the light input sur... | 10/28/2008 |
| 7432822 | Terminal device It is an object of the present invention to provide a terminal device which is not limited in the degree of freedom in terms of case design and which allows easy visual recognition of light emission for indicating a specific state even when it is carried in a chest ... | 10/07/2008 |
| 7431489 | Enhanced light fixture An enhanced light fixture containing a volumetric, anisotropic diffuser to control the spatial luminance uniformity and angular spread of light from the light fixture is disclosed. The anisotropic diffuser provides increased spatial luminance uniformity and efficien... | 10/07/2008 |
| 7430355 | Light emissive signage devices based on lightwave coupling A signage device comprising one or more light sources, a waveguide or arrangement of waveguides and photoluminescent features coupled thereto. In one embodiment, a waveguide is adapted to receive light of a first wavelength and the photoluminescent features are adap... | 09/30/2008 |
| 7425089 | Lighting device and image display unit and light guide provided with it An illumination device according to the present invention includes a light source; and a lightguide element including an incidence surface for receiving light emitted from the light source and an outgoing surface from which the light incident from the incidence surf... | 09/16/2008 |
| 7415176 | Method and device to improve backlight uniformity A hot spot filter for a light guide is created by taking an image of the light output pattern of an illiuminated light guide. The hot spot filter may be a film, a layer, or an additional liquid crystal display dedicated to attenuating bright spots from the light gui... | 08/19/2008 |
| 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 |
| 7399995 | Backlight module for liquid crystal display A backlight module includes a base, a plurality of point light sources distributed on the base and a light guide plate. Each of the point light sources includes a transparent cover and a light-emitting unit received in the cover. The transparent cover includes an in... | 07/15/2008 |
| 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 |
