Abstract: A metal halide lamp has a long life since the temperature of the electrodes can be prevented from excessively rising. The metal halide lamp has an arc tube 3 that is composed of a light emitting part 1 and a sealing part 2 at each end of the light emitting part 1. A pair of electrodes 4 are extended from the ends of the arc tube 3 into the discharge chamber of the light emitting part 1 so that the discharge side ends of the electrodes 4 face each other. The other end of each electrode 4 is connected to a conductor 5 sealed in the sealing part 2. A part of the electrode 4, sealed in the sealing part 2, from the boundary between the light emitting part 1 and the sealing part 2 to the discharge side end of the conductor 5 is referred to as the electrode sealing part L. A metal member 7 partially covers the electrode sealing part L. The ratio of the weight A (mg) of the metal member 7 to the weight B (mg) of the electrode sealing part L is defined as an inequality 0.2≦A/B≦1.6.

Abstract: This self-contained multipurpose illumination device offers an individual a unique device that cannot only be used to adorn dress apparel, but may be easily removed and adapted for use in other applications, such as a safety device in adverse environments. The apparatus contains a series of illumination elements shaped similar to a shirt button stud which may be inserted through any common buttonhole or similar orifice in a garment. The illumination elements are connected to a control circuit and power source by way of a wiring harness.

Abstract: A surgical task light is provided including a light source adapted to generate light. An elongate optical fiber carries the light generated by the light source to a remote target site. The optical fiber includes a proximal end for receiving the light generated by the light source and a distal end for emitting the light. A support member supports the optical fiber relative to the ceiling of an associated operating room and holds the optical fiber in a plurality of selected positions. A lens device is carried on the distal end of the optical fiber for focusing the light emitted from the distal end of the optical fiber into a desired selected pattern. A sterile sheath member in combination with the surgical task light provides a sterile barrier between the surgical area and the mechanical and optical portions of the task light. A re-lamping module includes a replaceable light bulb module carrying a light bulb to help facilitate replacement of the light bulb by maintenance personnel.

Abstract: A modular rotatable warning light incorporates a standardized shaft, rotatable sub-assembly, motor and worm gear to form the mechanical core of the assembly. The rotatable sub-assembly includes a rotatable reflector mount supported by two axially spaced bearings for rotation around a hub. The axially spaced bearings significantly improve the function and service life of the rotatable warning light. The standardized parts are combined with a selected base plate, lamp holder, lamp and reflector to produce a modular rotatable warning light having a specified overall configuration. The efficiency of production and maintenance of various rotatable warning light configurations is improved by reducing engineering, production, maintenance and inventory costs.

Abstract: A lighting device has a light source and a light distributor arranged under it. Said light distributor has a distributor element which preferably consists of sheet metal and has an extensive main section with an incidence side facing the light source and a number of holes for the passage of light which widen in the direction away from the incidence side, and a collar for each of said holes. Preferably, a diffuser is arranged above the distributor element and possibly a diaphragm, preferably consisting of sheet metal, is arranged above said diffuser. The light distributor deflects and distributes light radiated downward through it, in such a way that said light makes at least a desired angle of, for example, at least 25° with a horizontal plane. The light distributor can be produced with a small height and economically and has a good antidazzle effect.

Abstract: A lighting device includes a decorative member disposed on a plate, one or more light devices may be used for lighting the decorative member, and a fan device may be used to blow the decorative member and to oscillate or fluctuate the decorative member for generating the other decorative effects. One or more sockets are secured to the plate with brackets for plugging the light devices. The plate includes a housing having one or more air passages formed between the fan device and the decorative member for allowing the air stream to flow toward the decorative member.

Abstract: A headlight and sidelight assembly is provided for an off-road vehicle having a front enclosure. The front enclosure has a front end face lying substantially in a plane disposed substantially perpendicular to a longitudinal axis of the vehicle and first and second side faces. First and second light housings are disposed at the intersection of the end face and opposite side faces and are each open toward a side and front of the vehicle. First and second reflectors are provided in the housings and form divergent inner walls of the housings.

Abstract: A backlight has a light source housing, having a light concentrating portion and fixing portions, and an opening, wherein the opening's upper and lower sides, namely, the upper and lower boundaries between the light concentrating portion and the fixing portions on the housing are located vertically between the upper and lower sides of the light entering surface of the light pipe. Therefore, light is prevented from entering the gap between the housing and the light pipe, and is instead reflected on the inner surface of the light concentrating portion to enter the light pipe through the light entering surface, so that the entering light contributes to improve the brightness of the collimated light.

Abstract: A reflection illumination device includes a light guide, light sources, and a reflecting mirror. The light guide is placed in front of an object to be illuminated. The light sources are arranged around the light guide. The reflecting mirror is placed behind the object. One or a plurality of total reflection areas on which projections or recesses each having a triangular cross-section and serving to totally reflect light emitted from the light source toward the object are formed are arranged on the surface of the light guide. Each of the projections or recesses is constituted by an inclined surface inclined at a predetermined angle toward a reference portion positioned at a predetermined position on the light guide, and a vertical surface vertical to the light guide. The light sources and irradiation means for parallelly irradiating the total reflection areas with light from the light sources are arranged at edges of the light guide in correspondence with the total reflection areas.

Abstract: An exterior lighting system for providing permanent installation of external lighting for structures. The exterior lighting system includes a base portion adapted for affixing to a structure, a front portion coupled to the base portion and a lamp coupled to the base portion.

Abstract: Perimeter lighting systems for portable communication devices such as radiotelephones include a light distribution channel which is configured to capture light emitted by a device and directs it around perimeter portions of the device to allow for easier locating means in dark or low light conditions. The perimeter lighting system can be integrated into the housing of the device or can be provided as an after market case or belt clip.

Abstract: A shade for screening part of reflected light from a light source is rotated between a low beam and a high beam positions providing a different amount of screened light. The beam switching device comprises a tension coil spring for elastically biasing the shade toward the low beam position and a solenoid constructed to press against the shade against the elastic biasing force of the tension coil spring so that the shade rotates to reach the high beam position. The solenoid is constructed to simply press against the shade. The beam switching device can be assembled to a reflector unit only by disposing the solenoid and the tension coil spring at predetermined positions, respectively.

Abstract: An illuminating apparatus that utilizes a plurality of light sources to generate bright input light for a projection display. The apparatus includes a lighting unit, a first reflector having a central region formed with an opening, a peripheral region around the central region for reflecting light from a plurality of lighting members to converge rearwardly, a second reflector disposed behind the first reflector and facing the opening in the first reflector, such that the light rays pass through the opening in the first reflector, and an integrator disposed in front of the first reflector to receive the light rays which passed through the opening in the first reflector.

Abstract: An illuminated indication device for road traffic. A number of indicating points are formed with indicating lenses in or on an indicating surface. The indicating lenses have a light entry surface and a light exit surface and are illuminated by the rear face of the indicating surface, which has individually allocated light-emitting elements with a small diameter. One object of this invention is to make the indication device easier to read. The light entry surface and/or the light exit surface is shaped in such a way that the distribution of light intensity on the indicator surface extends further in a horizontal direction than in a vertical direction.

Abstract: Luminaires intended to deliver maximal light flux with improved uniformity, the invention provides in certain embodiments a shielding device or flux manager which produces target extinctions by management of flux to precisely pass flux nearby original arc and through a second bounce off the reflector structure to direct that flux back into the beam. A virtual arc is thus produced in proximity to the original arc with the virtual arc acting as a second source. The flux manager acts to reduce glare and “spill” light. Performance optimization is further provided in embodiments using the flux manager through additional use of a multi-faceted reflector insert which re-aims light which would have been incident on portions of the reflector structure and which light is blocked by the flux manager. The improved light distribution of the several embodiments of the invention allow use of the flux management concept in lighting fixtures of varying type.

Abstract: A backlighting device including: a light guide unit formed as a substantially flat panel of a first resin material having opposing surfaces and side faces, the light guide unit having a light guide section, wherein light enters the light guide unit through at least one of the side faces and is emitted from one of the opposing surfaces; and a light source element disposed adjacent to the at least one side face of the light guide section for irradiating light onto the at least one side face of the light guide section. The light guide unit further includes a light scattering section formed of a second resin material, the light scattering section substantially perpendicularly protruding from the at least one side face of the light guide unit, and the light scattering section overlies the light source element along a direction of travel of the light exiting from the light guide section so as to scatter the light irradiated by the light source element.

Abstract: A solar cell lighting fixture is integrated with a heat sink adapted to a lantern, a garden light, a wall fitting, a portable lighting fixture or other lighting fixtures, or on a mobile vehicle including an automobile, a sea vessel, an aircraft, a bicycle, or a motorcycle. A support structure with a predetermined configuration is provided between an upper lid with a solar cell panel, and a bulb is provided below the upper lid. A bulb housing contains battery components, such as a secondary cell or a battery capacitor, a charging circuit or a component to convert electrical energy into optical energy, and operation and control circuits. The support structure defines a space for the heat sink, thus allowing heat dissipation for the area between the upper lid and the bulb, thus protecting the charging circuit and battery components contained inside the bulb housing from being damaged or having their performance negatively affected by heat built up due to prolonged exposure to the direct sun.

Abstract: A lighting fixture having a fixture housing, a transformer housing, and a locking means is suitable for installation in non-accessible areas. The transformer housing includes a first stop and second stop, and is pivotally engaged with an access aperture that is part of the fixture housing. The locking means serves to prevent pivotal movement of the transformer housing in relation to the access aperture. The lighting fixture may also have a fixture housing, a transformer recess, and a locking means. In this embodiment, the fixture housing includes an inner stop with which a transformer is pivotally engaged, and the transformer is retained in the recess by the locking means. The lighting fixture also includes a trim assembly.

Abstract: A lamp assembly is provided which includes a lamp/reflector subassembly coupled together by a lamp coupler. The lamp coupler may include two coupler segments which are configured and dimensioned such that the lamp/reflector subassembly may be enclosed within the two coupler segments which may then be latched together. When latched together, the light source of the lamp will be properly positioned relative to the reflector to provide the desired lumen output. Such lamp assembly does not require a costly lamp to reflector focusing operation. A lamp coupler useful in such lamp assembly is also provided.

Abstract: A flashlight carriable on one's person having a hollow main barrel and an end cover, the end cover including an LED, a lamp holder and switching device. One end of a battery set provided in the main barrel is pressed by a spring against the electric conductive cap of the switching device when the end cover is mounted. When the hollow main barrel is rotated relative to the end cover, the LED is turned on or off.