Abstract: A submersible light fixture which includes a housing, and an LED light engine mounted to a heat-conducting plate, with the heat conducting plate being supported by the housing. The housing defines an opening adjacent to the heat-conducting plate, and the opening is designed to be in fluid communication with a body of water when the light fixture is submerged such that the water acts as a heat sink to the LED light engine. In one arrangement, the opening is a gap between the heat-conducting plate and a watertight container containing a control module for the LED light engine.

Abstract: Light shades and lighting systems that create a spectral effect when a lighting element is illuminated within the shade, and features that reflect light originating within the shade. Embodiments of the invention incorporate hollow body having a diffraction grating thereon and an internal cavity to retain one or more lighting elements, and in some instances, to also retain one or more lengths of conductor.

Abstract: A structure for a high diffuse efficiency and water-proof lighting device is provided, including a light tube and a base holder. The light tube and the base holder are each an enclosed structure. The light tube includes a circuit substrate inside the enclosed structure. The circuit substrate includes a plurality of LEDs. The light tube and the base holder each include two holes close to both ends. When the light tube and the base holder are assembled, the holes match so that the wire connecting the circuit substrate can go through the holes to enter the base holder. A water-proof and highly pull-resistant glue is used to fill the overlapping of the holes. A resilient element is used to connect the neighboring circuit substrates, the resilient element can absorb the deformation caused by the temperature changes so that the light diffusion remains uniform. Therefore, the lighting device can perform well even when operating in an environment with drastic temperature changes.

Abstract: A night light comprising a housing with a rotatable bezel mounted thereon. The housing includes a rear wall with electric blades extending outwardly therefrom for engaging in an electrical wall outlet. The bezel is rotatable about a first pivot axis. A LED array is mounted in the bezel and the array is rotatable about a second pivot axis. The second pivot axis is oriented on a different plane to the first pivot axis and preferably lies at ninety degree thereto. When the bezel is rotated about the first pivot axis, the direction of the light emitted from the LED array is changed. Because the bezel can rotate through 360°, the LED array can be rotated through 360° about the first pivot axis. The LED array can be pivoted through an arc of between 160° and 175° about the second pivot axis.

Abstract: In a planar light guiding device and a display device, plural light guiding rods are arranged in parallel to one another in a housing having an opening portion serving as a light emission face at the upper surface thereof, and a point light source (LED) 2 is disposed so as to oppose to at least one of both the end faces 1a of each light guiding rod through a space, thereby constituting a light source unit. These light source units are arranged in the metal housing to thereby form the planar light guiding device.

Abstract: Light emitting assemblies include at least one light source and at least one film, sheet, plate or substrate having optical elements or deformities of well defined shape on at least one surface that have reflective or refractive surfaces for controlling the light output ray angle distribution of the emitted light. The film, sheet, plate or substrate may be positioned near the light emitting surface of a light emitting panel member with an air gap therebetween or over a cavity or recess in a tray through which light from a light source in the cavity or recess is emitted.

Abstract: A vehicular lamp 1 including a lamp unit 2, in which a light-emitting diode 2a is used as the light source, and a cover member 4, which is provided between the lamp unit 2 and an outer lens 3 of the lamp and located near the inside surface of the outer lens 3 so as to cover the lamp unit 2 except its light-emitting region. The cover member 4 is formed of a material that has good heat conductivity, and heat generated by the light-emitting diode 2a is transferred to the cover member 4 and to the outer lens 3, thus heating the outer lens.

Abstract: In accordance with the invention a light source for an image projection system comprises one or more LEDs packaged for high temperature operation. Advantageously, the LED die are disposed on a package comprising a ceramic coated metal base including one or more underlying thermal connection pads, and underlying electrical connection pads, each LED die thermally coupled through the metal base to a thermal connection pad and electrically coupled to electrical connection pads. The LED can be mounted directly on the metal of the base or on a thin coating of electrical insulator on the metal. Arrays of LED die thus packaged are advantageously fabricated by the low temperature co-fired ceramic-on-metal technique (LTTC-M) and can be referred to as LTTC-M packaged arrays. The LEDs are advantageously mounted in an array of cavities having tapered sides to reflect light from the LEDs. The high temperature LED light sources can substitute for HID lamps in a variety of front and rear projection systems and displays.

Abstract: An illumination assembly including a thermally conductive substrate, a reflective layer proximate a first major surface of the thermally conductive substrate, a patterned conductive layer positioned between the reflective layer and the first major surface of the thermally conductive substrate and electrically isolated from the thermally conductive substrate, and at least one LED including a post that is attached to the thermally conductive substrate is disclosed. The at least one LED can be thermally connected to the thermally conductive substrate through the post and electrically connected to the patterned conductive layer.

Abstract: An illuminated tire rim apparatus includes a hub that has a central aperture therein for receiving a free end of an axle of a vehicle. The hub has a plurality of bolt receiving openings therein positioned between the aperture and an outer edge of the hub. A plurality of spokes is attached to the outer edge of the hub and radially extends outwardly therefrom. Each of the spokes is comprised of a substantially translucent material and each of the spokes has an outer end. A rim has a generally cylindrical shape and has an inner surface and an outer surface. Each of the outer ends of the spokes is attached to the rim. Each of a plurality of light emitters is mounted in one of the spokes so that the spokes are illuminated when the light emitters are turned on. A power supply is electrically coupled to the light emitters.

Abstract: A light fixture or troffer for directing light emitted from a light source toward an area to be illuminated, including a reflector assembly within which the light source is positioned; a housing defining at least one selectively enclosable ballast enclosure; and a ballast that is positionable in the at least one ballast enclosure.

Abstract: An apparatus having a light source, a reflector, and a light pipe is disclosed. The light source includes a plurality of LED dies arranged in an array along a first direction, each LED die emitting light in a second direction. The light pipe includes a layer of transparent material having a top surface, a bottom surface, and an edge surface. The reflector reflects light from the LED dies traveling in the second direction into the edge surface of the light pipe such that a portion of the light is reflected by the top and bottom surfaces of the reflector. In one embodiment, the reflector redirects light leaving the LED dies within a predetermined cone of angles about the first direction into the light pipe such that the light in that predetermined cone of angles is totally reflected by the top surface of the light pipe.

Abstract: A portable personal headlamp utilizes an array of light-emitting diodes on the front face of a circuit board. Arc-shaped projections on the front face of a finned heat sink are in heat-conducting relationship with printed conductors on the rear face of the circuit board, which partially surround one lead of each light-emitting diode.

Abstract: A backlight assembly for use in a transmissive display system is described. The backlight assembly includes a light source that illuminates a light chamber. A transmissive display is positioned adjacent the light chamber so that light that exits the chamber illuminates the transmissive display. The backlight assembly may include one or more specular reflectors and one or more other optical elements to ensure that the light that exits the light chamber has the desired spatial uniformity, polarization, color, and/or angular distribution.

Abstract: A blood tracking system, comprising a light source comprising a first LED configured to emit light of a first color and a second LED configured to emit light of a second color is disclosed. The light of the first color and the light of the second color are mixed to appear as light of a third color when the first LED and the second LED are activated; and wherein the light of a third color is effective for highlighting blood. A method of highlighting a red material comprising illuminating the red material with both red and blue light is also disclosed.

Abstract: A light source system is arranged about an axis, and includes a planar member having top and bottom surfaces with a central aperture and a plurality of electrical conductors spaced about the central aperture and extending beyond the top and bottom surfaces. A portion of the electrical conductors extending beyond the top surface have electrical insulators. A base having passages to receive the electrical conductors extends beyond the bottom surface and includes a boss on the top surface fitted through the aperture. A body has a first part coaxial with the axis and a second part transverse to the axis. A light source is positioned near an end of the first part. The base is positioned at an opposite end of the body and a plurality of rod-like members project from the second part parallel to the axis; and a light emitting diode is positioned adjacent the first part.

Abstract: The present invention provides A direct-type backlight having: a resin sealing member including at least one resin layer, which has a light reflecting section formed on the outermost surface of the resin sealing member; an optical semiconductor element sealed by the resin sealing member; and plural circular light scattering grooves formed concentrically on at least one surface of the resin layer, wherein an area of a circle in the center and an area among the respective concentric circles are substantially the same.

Abstract: A method of manufacturing a light guide plate comprising the following the steps. First, a thin film with a transfer material layer thereon is provided. Thereafter, a molding machine having a molding cavity therein is provided. A thin film is disposed in the molding machine such that at least part of the transfer material layer is located inside the molding cavity. A light guide plate body is formed inside the molding cavity so that the transfer material layer is transferred onto the light guide plate body at the same time.

Abstract: A vehicular lamp including a luminescent element module made of a flexible parallel wiring body, which is made of a plurality of flexible wiring conductors that are disposed parallel to each other and sheathed by soft plastic, and a plurality of light-emitting diodes, which are mounted on the flexible parallel wiring body, so that the luminescent element module has a conductive path formed by notching a part of the wiring conductors of the flexible parallel wiring body and/or by connecting a plurality of the wiring conductors together, and the luminescent element module is provided on the lamp body so that the light-emitting diode faces in the direction of radiation of the vehicular lamp.

Abstract: A light fixture having a base for housing a light producing source and a flat plate disposed within the base. The plate has a well formed in it, the well having light reflecting walls. A lamp socket is located in a light reflecting bottom wall of the well. A plurality of light reflecting elements is attached to the plate and a pair of light reflecting assemblies, one on either side of the well, is fixed to the plate. Each light reflecting assembly includes a plurality of light reflecting fins affixed to the plate and projecting at an angle away from the plate. A frame having a convex lens affixed thereto is hingedly attached to the base. A light shield is fixed to the frame for reducing dispersion of unwanted light.