Abstract: A recessed down-light fixture having a housing with a light source aperture, a control gear assembly containing control gear, and a guidance system that allows the control gear assembly to slide and align with the light source aperture. The aperture enables passage of a light source through a barrier such as a ceiling. The housing includes a latching or locking device for release and passage of components through the aperture for maintenance or re-lamping. The control gear assembly, or internal wiring compartment, includes a stop that secures the shuttle in a position above the aperture. The control gear assembly can then be detached and pass through the aperture, providing access to electrical components and splices within the assembly. A trim ring having a concealable surface is mounted around the aperture to increase the structural integrity of the aperture, allow for plastering and painting, and to provide a finished appearance.

Abstract: Lighting appliance provided with an outer chassis made in such a way as to permit the operator to comfortably perform in situ a repair or maintenance operation if needed. Said chassis makes it possible to efficiently separate the light emission devices and the reflector and refractor means associated thereto from the power supply means guaranteeing that the section containing the LED devices is such as to ensure the required level of insulation from external elements, such as IP55 or more preferably IP67, even after the chassis has been opened and said section has been separated from the rest of the chassis.

Abstract: An LED light source unit for a backlight of a liquid crystal display is provided. The light source unit includes a plurality of LED chips, an insulating substrate, and a metal film covering a principal surface of the substrate. The LED chips are mounted on the metal film. With this arrangement, brightness of the light source unit is enhanced.

Abstract: A light dispersing flashlight cover adapted for selective attachment to a flashlight having an articulating head. The cover includes a platform supported in resilient cantilevered relation such that the platform is disposed in overlying, raised relation to at least a portion of the flashlight lens when the cover is in place. A light beam emitted through the lens is at least partially blocked by the platform and is dispersed radially relative to the lens.

Abstract: A dental light comprises at least one light emitting diode light source configured to produce a light beam and at least one collimating lens system situated to receive the light beam. The collimating lens system is configured to collect and collimate the light beam. The collimating lens system can additionally modify the beam through controlled diffusion or shape the beam using an aperture.

Abstract: A locomotive headlamp comprising one or more light emitting diode (“LED”) bulbs, wherein the headlamp is ideally suited for reducing the parasitic load of the locomotive by up to about 86 percent, and which is designed and installed in a locomotive's headlight housing to cause the heat generated by the one or more LED bulbs to prevent snow and ice impaction around the locomotive headlamp, and to prevent damage to the electronics and/or circuitry used to operate the one more LED bulbs from the locomotive's power source.

Abstract: A sealed optical street luminaire having a luminaire housing fitted with a clear, flat lens and provided with an LED light source assembly mounted in the housing. The light source assembly has a heat dissipating LED support member secured to a heat conductive adapter for securement in the luminaire housing. A reflector is secured in the luminaire housing behind the lens which is sealingly positioned about the reflector. The LED support member supports LED modules at a predetermined angle and orientation relative to an inner reflective surface of the circumferential wall of the reflector. The heat dissipating LED support member and the heat conductive adapter dissipate heat through the luminaire housing.

Abstract: The invention shows and describes, among others, a light fixture (10) for illuminating building surfaces, comprising a circuit board (11) on which a plurality of LEDs (12a, 12b, 12c) are mounted, secondary optics (14) that bundle the light emitted by the LEDs, and tertiary optics (16) formed by a planar, translucent element that has light-directing microstructures.

Abstract: Embodiments of an illuminated liquid container are disclosed herein. The illuminated liquid container can include a light source that, when activated, emits light, and a switch that activates the light source. Some embodiments of the illuminated liquid container include a bottle for holding a liquid and a cap through which the liquid can be passed.

Abstract: Light emitter devices with improved light extraction and related methods are disclosed. In one embodiment, the light emitter device can include a submount, at least one light emitting chip disposed over the submount, and a lens disposed over the light emitting chip. The lens can include a lens base that can have substantially the same geometry as a geometry of the submount.

Abstract: A lighting apparatus is described that may include a ballast housing, a lighting element housing and a ventilation chamber. The lighting element housing may include a lighting element. The ventilation chamber may be disposed between the ballast housing and the light element housing to maintain a predetermined distance between the ballast housing and the lighting element housing to reduce heat transferred from the lighting element to the ballast housing.

Abstract: A semiconductor light emitting element includes a transparent substrate and a plurality of light emitting diode (LED) structures. The transparent substrate has a support surface and a second main surface disposed opposite to each other. At least some of the LED structures are disposed on the support surface and form a first main surface where light emitted from with a part of the support surface without the LED structures. Each of the LED structures includes a first electrode and a second electrode. Light emitted from at least one of the LED structures passes through the transparent substrate and emerges from the second main surface. An illumination device includes the semiconductor light emitting element and a supporting base. The semiconductor light emitting element is disposed on the supporting base, and an angle is formed between the semiconductor light emitting element and the supporting base.

Abstract: Provided are a wire grid polarizer and a backlight unit using the wire grid polarizer. The wire grid polarizer comprises a first grid layer formed on a substrate and provided with at least one of a first grid pattern, and a second grid layer formed on the first grid pattern and provided with at least one of a second grid pattern made of metal material wherein the first grid layer is made of high molecular substance having a lower refraction index than that of the substrate. By forming a first grid pattern on a substrate using a high molecular substance layer and by forming a metal grid pattern on the first grid pattern, transmission rates of respective wavelengths depending on light angles of incident light are controlled and thereby minimize color variations depending on view angle.

Abstract: A lamp with an LED array is disclosed. The centralized nature of the LEDs allows the LEDs to be configured in a filament-like way using a supporting power structure, near the central portion of the optical envelope of the lamp. In example embodiments, the LEDs are cooled by a fluid medium to enable the LEDs to maintain appropriate mechanical stability and operating temperature. In some embodiments, the lamp operates at a power of at least 5 watts. Since the LED array can be centralized to form a filament-like structure, the light pattern from the lamp is not adversely affected by the presence of a heat sink or mechanical supporting parts. In some embodiments, phosphor is used provide wavelength conversion. The phosphor can be suspended within the optically transmissive fluid medium, placed remotely in the lamp structure, or applied to un-encapsulated LED die.

Abstract: A vehicle lamp that can form a light distribution pattern required therefor effectively even with the existing DMD is provided. A vehicle lamp 1 includes a projection lens 6, a two-dimensional image forming device 10, 30 including a projection surface 11 positioned near a rear focal point F of the projection lens, and a light source 4 configured to irradiate the two-dimensional image forming device 10 with light, wherein the projection surface 11 is formed by a plurality of optical elements 12 that can be driven independently of the others, in the projection surface 11, illumination patterns 14a, 14b can be formed simultaneously and individually on a plurality of projection areas 13a, 13b, and the plurality of illumination patterns 14a, 14b are projected to the front of the lamp by the projection lens 6 so as to form a single or a plurality of light distribution patterns 20.

Abstract: A dustproof and waterproof multipurpose LED-light power source assembly comprises a heat sink, a heat-dispersal fan, a circuit board driver module, an LED light source module, a power-source casing top cover and a power-source casing bottom cover. The LED light source module comprises plural LED chips and an LED heat-dispersing substrate. The heat-dispersal fan is a dustproof and waterproof fan. The heat sink comprises a baseboard to which the LED heat-dispersing substrate is fixedly connected and conducts dispersed heat. At the center of the top of a heat-dispersal member, a space is provided to accommodate the heat-dispersal fan. The power-source casing bottom cover is positioned above the heat-dispersal fan and is fixedly connected to the heat sink. The power-source casing top cover and the power-source casing bottom cover are hermetically connected one to the other. A waterproof bolt assembly is connected to the top of the power-source casing top cover.

Abstract: The light source system includes a plurality of light source modules configured to respectively emit light source lights having optical characteristics different from each other, and an irradiation module to which the light source modules are mechanically and detachably attached. The irradiation module includes a first light guide member, a second light guide member, and a first light conversion unit. The first light guide member has a central axis set in parallel with a central axis of the second light guide member. The first light conversion unit is optically connected to the first light guide member and is optically separated from the second light guide member.

Abstract: Provided is a luminous sphere comprising a ball with a circular opening and a plug insertable into the ball. A battery container receiving one or more batteries is attached to the plug. A light source in electronic communication with the one or more batteries is enclosed with the inserted plug inside the ball and powered by the batteries to emit light from the ball. The plug can have a switch for activating the light source. The plug can also have one or more circuit boards attached to the plug for controlling power and timing to the light source. The light source can be a string of a plurality of light emitting diodes in series along a wire. A detachable solar panel can be in electronic communication with the one or more batteries. A sensor that turns on the light source when the sensor senses motion can also be provided.

Abstract: A light emitting device includes a heat dissipation board, a wiring board that is bonded and fixed to the heat dissipation board and formed with a through-hole, a semiconductor light emitting element that is mounted on a face of the heat dissipation board, the face being exposed through the through-hole of the wiring board, and a light reflecting member that covers a portion of an inner peripheral wall surface of the through-hole of the wiring board, the portion being squarely opposed to a side surface of the semiconductor light emitting element.

Abstract: A lamp for a vehicle is provided and includes a signal lamp that displays a predetermined image of repetition on an exterior mirror of a vehicle. The lamp further includes a mirror housing into which a mirror is installed and a signal lamp disposed on one surface of the mirror housing. The signal lamp includes a reflection unit, a lens unit disposed at a predetermined distance apart from the reflection unit and having a half mirror installed on at least one surface thereof, and a first light source unit disposed between the reflection unit and the lens unit and is about the same distance apart from the reflection unit and the lens unit.