Abstract: The high-pressure metal halide discharge lamp comprises a quartz-glass lamp vessel (1) with an ionizable filling and two electrodes (2) which are connected to current conductors (3). The electrodes are provided with an emitter (6) which contains tungsten as a main component and at least three oxides, a first oxide which is chosen from hafnium oxide and zirconium oxide, a second oxide being lanthanum oxide, and a third oxide which is chosen from yttrium oxide.

Abstract: A lamp with improved safety features to avoid fire and burn hazards. The lamp includes an electrical circuit having a thermostat connected in series with the bulb of the lamp. The thermostat is mounted in close proximity to the lamp's bulb and, upon the ambient air temperature in the vicinity of the thermostat reaching a predetermined temperature, the thermostat effectively opens the electrical circuit, shutting the lamp off. Once power is turned off for a period of time, the thermostat resets and the lamp may be operated again. A protective guard is positioned over at least a portion of the bulb of the lamp to prevent accidental burning.

Abstract: The electric lamp has a quartz glass lamp vessel (1) having first and second neck-shaped portions (2, 3) with first and second seals (4, 5). Current supply conductors (6, 7, 8; 9, 10, 11) consist of a metal foil (7, 10) embedded in the respective seal (4, 5), an inner (6, 9) and an outer current wire (8, 11) connected hereto. A seal ends with a closed fracture surface (14) through which an outer current wire (8, 11) extends. Favorably, the edge (13) of the fracture surface (14) has some small indentations (16) adjacent the origin of the fracture (19). The total length of the lamp is about 2 mm less than that of its conventional counterpart.

Abstract: In a surface light source device of side light type applied to a liquid crystal display or the like, a light control member is prevented from clinging to a light guide plate. The light guide plate is formed by means of injection molding with molds 16A and 16B. The molds 16A and 16B have an additional cavity 13 in a portion corresponding to a position close to an incidence surface of the light guide plate 11, with a gate G being arranged in the cavity. In the mold 16B, its inside surface corresponding to an emitting surface 12 is roughened. According to gradient in roughness, the emitting surface of a light guide plate to be manufactured is roughened so as to have uniform or graded roughness. On a center line C--C, the inside surface is much roughened in a portion distant from the cavity 13. Further, on a crossing line D--D, the inside surface is roughened so as to reduce the roughness according to distance from the center.

Abstract: A process to produce a ceramic tube for a metallic halide lamp, comprising the steps of forming an integrally molded body composed of an electrode member-inserting portion and an annular portion located around an outer periphery of the electrode member-inserting portion, inserting the annular portion of the integrally molded body into an open end portion of a molded cylindrical tubular body in a state that each of the integrally molded body and the molded tubular body is used as molded or after being calcined, thereby forming an assembled body, and firing the assembled body, thereby forming an integrally fired body composed of the electrode member-inserting portion and the annular portion, whereas the annular portion and the tubular body are sintered to each other by firing in a state that radial press fitting forces act between the annular portion and the tubular body, the ceramic tube being constituted by the cylindrical tubular body containing a discharging space with open end portions at both ends thereof

Abstract: An illumination method and apparatus for machine-vision systems, including a ring-light source (e.g., LEDs arranged in one or more circular rows), and a reflective-ring focusing element. The illumination source exhibits multidirectional ring-illumination properties which are useful for illumination of small components (which are being inspected or measured) without unwanted shadows. One embodiment provides a darkfield illumination system. One embodiment of the present invention uses a strobed (or pulsed) power supply to drive the LEDs. Yet another embodiment of the present invention uses a xenon strobe ring-light source and a backplane slit in place of the row of LEDs 25. In one such xenon strobe embodiment, a color filter is also placed in series with the light path in order to obtain a monochromatic light.

Abstract: A method for manufacturing an X-ray tube that simplifies the manufacturing process, which method includes a stem unit assembly process, a high-temperature brazing process, an X-ray tube assembly process, and a low-temperature brazing process. In the stem unit assembly process, cathode pins are inserted through high-temperature brazing material and the cathode pin holes provided on the bottom plate member of the stem unit. In the high-temperature brazing process, the stem unit assembled in the above-described process is heated to the brazing temperature of the high-temperature brazing material used in the stem unit. In the X-ray tube assembly process, the focusing electrode, ceramic bulb, and output window are placed over the stem unit with low-temperature brazing material interposed between each component. In the low-temperature brazing process. the X-ray tube assembled in the above-described process Is heated to the brazing temperature of the low-temperature brazing material used in the X-ray tube assembly.

Abstract: An illuminated safety helmet for use during potentially dangerous activities, such as bicycling or rollerblading. The helmet is a two piece helmet having a hard outer shell and a high density polystyrene inner shell. An illuminating assembly is recessed within the exterior portion of the inner shell. The illuminating assembly has a power source connected to various light sources, which are exemplary light emitting diodes (LEDs). The LEDs are connected to a multitude of fiber optic cables via a cylindrical connector. Light from the LEDs shine into an end of the fiber optic cable. This light emits out of the cladding of the fiber optic cable if the cable is a side light fiber optic cable. The light emits out of the other end of the cable if the cable is a point-to-point fiber optic cable. The outer shell has a transparent portion corresponding to the pathway taken by the illuminating assembly so that light can emit past the outer shell at various light intensities.

Abstract: An emergency flasher is provided including a housing having an inboard extent and an outboard extent rotatably coupled to the inboard extent. A flasher bulb is mounted on the outboard extent for intermittently illuminating upon the actuation thereof. Next included is a coupling assembly mounted on the housing for coupling the same to a recipient surface.

Abstract: Multiple procedures are presented for removing contaminant material (12) from electron-emissive elements (10) of an electron-emitting device (30). One procedure involves converting the contaminant material into gaseous products (14), typically by operating the electron-emissive elements, that move away from the electron-emissive elements. Another procedure entails converting the contaminant material into further material (16) and removing the further material. An additional procedure involves forming surface coatings (18 or 20) over the electron-emissive elements. The contaminant material is then removed directly from the surface coatings or by removing at least part of each surface coating.

Abstract: An improved solar lighting system can be applied to a number of temporary signs and is particularly adapted for use on a real estate sign. The system includes three parts: a solar generating unit containing a repositionable array or photovoltaic cells, electronic circuitry and storage batteries; an illumination unit containing electric lamps and reflectors and attachment devices for connection to a variety of signs; and a connecting cable for safely conducting electric energy between the units and for providing device security to discourage theft.

Abstract: A head lamp in which the sub-lamp luminous intensity distribution pattern is designed to control light from a discharge bulb by a plurality of reflective surface elements constituting the reflective surface of a reflector even in such a state that the reflector has been subjected to aiming adjustment. A reflective surface element (22As1) which is positioned in the outermost side portion out of a plurality of reflective surface elements (22As) constituting the horizontal cut-line forming area (22A) of a reflector reflective surface (22) has a concave horizontal sectional shape and rays of the light reflected from the reflective surface element (22As1) are made to horizontally cross each other so as to form a luminous intensity distribution pattern (PA1).

Abstract: An electrodeless gas discharge lamp assembly (10) includes a light-transmitting envelope (12) having an illumination gas (14) sealed therein. An induction coil (24) is disposed about the envelope (12) and is operative when driven to excite the gas (14) to inductive discharge illumination. The coil (24) and envelope (12) are prepared as separate components. The coil (24) has an inner circumference which is initially smaller in dimension than a fixed outer circumference of the envelope (12). The two are assembled by extending the envelope (12) into the coil (24). The envelope (12) expands the inner circumference of the coil (24) to the size of the envelope (12), achieving a constricted, intimate contact of the coil (24) about the envelope (12) and assuring that the flux lines generated by the coil (24) will pass through the envelope (12) and act on the gas (14).

Abstract: The present invention provides a lamp comprising a lamp body formed by one single device component. The device component is formed of a foil made of a bendable, elastic material. The foil exhibits a bending line near a center of the foil. The foil contains an opening for receiving the illuminating device and/or current-carrying parts. The foil is formed to a curved, central wave fold by exerting a light pressure from two sides toward the center of the foil based on the bendable and elastic properties of the foil. The curved, central wave fold ends at said bending line. The foil assumes a cap-like spatial structure based on a partial deformation along the bending line caused by the light pressure. The cap-like or hood-like foil can be then easily fixed in this spatial structure by means of a suitable tightening, clamping, or locking device. The entire lamp body is stable and fixed in this spatial structure.

Abstract: An internally lighted flag mast that reflects light externally using reflective surfaces within the flag mast to illuminate a flag hanging therefrom. An opaque cover, sides and baffles on the flag mast block direct light from being emitted and only allow reflected light to illuminate the flag. During darkness, a photosensor means automatically activates the light source.

Abstract: A method for adjusting a vehicle headlight during cornering, involves creating cornering light by superimposing a light distribution pattern (37) with a greater horizontal dispersion than that of a low-beam light onto the low-beam light distribution pattern (36). A fog-light distribution pattern (37) of a fog light is used as the light distribution pattern having the greater horizontal dispersion. A single headlight unit can be used for generating such cornering light according to the method of this invention.

Abstract: An indicator light for a motor vehicle includes a lamp, a reflector, a cover lens, and a screen placed between the lamp and the cover lens so as to mask the lamp. The reflector has a set of deflecting panels or facets, adjacent to each other and arranged to generate a plurality of secondary light sources visible within a given field of observation.Each deflecting panel comprises a central zone having a contour, projected orthogonally on the optical axis, which is generally rectangular with horizontal and vertical sides and adapted to cover the whole field of illumination, together with at least one pair of peripheral zones with oblique sides, smoothly extending the central zone on two opposed sides of the central zone. The peripheral zones together also cover the whole field of illumination. Each deflecting panel reveals at least two virtual light sources within a given field of observation, when viewed from any angle within that field.

Abstract: An outdoor lighting fixture for providing coordinated visual and audio effects which includes a first housing adapted to be carried by a ceiling support, an electric light source mounted in the housing for directing light downwardly therefrom and a plurality of chime members, preferably tubular in configuration, depending from the housing in a laterally spaced array within the area below the light source. Upon activation of the light source in a light breeze, the chime members will contact one another to provide the melodic audio effect of a wind chime while their movement below the light source creates a moving shadow effect on the floor below having a tempo corresponding to that of the melodic audio effect created by the contacting chime elements.

Abstract: A portable smoke dispersing device includes a cylindrical body containing a motor fixed with a fan for producing a strong wind, and a jet nozzle for spraying minute water drops mixed in the strong wind to flow out of the body into dense smoke in a fire site so as to disperse dense smoke out of a room, a house, etc. Further, a power source and a water tank are attached with the body, and an illuminating lamp and laser sight are also provided for searching into dense smoke for people trapped in a fire to lead them to escape out.

Abstract: A light distribution screen is constructed of a main light distribution region including a main optical axis, a low light intensity region darker than an upper part of the main light distribution region, and high light intensity regions brighter than an upper region of the low intensity region. A corner can be brightly illuminated when the motorcycle is cornering, which means that the visibility of the corner can be improved and oncoming traffic is not dazzled when the motorcycle is travelling straight on.