| Patent application number | Description | Published |
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| 20080315769 | High intensity discharge lamp with enhanced dimming characteristcs - A high intensity discharge lamp comprises a discharge vessel and two electrode rods having substantially flat ends facing to each other in opposite positions within the discharge vessel. A spiral coil of wire is wound at least on a part of the surface of at least one of the electrode rods. The spiral coil protrudes over said end of the corresponding electrode rod and thus forms a hollow cavity for extending dimmable wattage range of the lamp. | 12-25-2008 |
| 20090251915 | THREE-MODE INTEGRATED HEADLAMP - A high intensity discharge lamp automotive headlamp system is provided for three different lighting functions. The headlamp system is a single unit that provides for low beam, high beam, and daylight running light (DRL) functions. Two optical components are used to easily and effectively switch between the different modes of operation. The first optical component is a shutter that selectively blocks a portion of the light beam output. Secondly, either a single lens or lens portions can be moved either within the light beam path or into the light beam path to alter the divergence. | 10-08-2009 |
| 20100013417 | CERAMIC METAL HALIDE LAMP WITH OXYGEN CONTENT SELECTED FOR HIGH LUMEN MAINTENANCE - A lamp includes a discharge vessel with electrodes extending into the discharge vessel and an ionizable fill scaled within the vessel. The fill includes a buffer gas, optionally mercury, and a halide component. The lamp includes available oxygen, sealed within the discharge vessel, at a concentration of at least 0.1 μmol O/cc. | 01-21-2010 |
| 20100019642 | GAS-FILLED SHROUD TO PROVIDE COOLER ARCTUBE - A lamp is provided having an arctube having a light-transmitting envelope. The arctube is surrounded by a gaseous medium confined by a containment envelope such as a hermetic shroud. The gaseous medium is preferably He or H | 01-28-2010 |
| 20100171422 | HIGH INTENSITY DISCHARGE LAMP - A high intensity discharge lamp comprising a discharge vessel having a wall enclosing a discharge space, an ionizable material contained in said space, and at least two electrodes each having an embedded portion and an electrode shaft extending from the wall of the discharge vessel and ending with a tip of the electrode, the electrodes being arranged in said space for establishment of an electric arc between said tips. Each of the electrode shafts of the electrodes comprises a thickened portion arranged between the embedded portion and the tip of the electrode, a first shaft section extending between the embedded portion and the thickened portion, the first shaft section having a first length and a first shaft diameter, and a second shaft section extending between the thickened portion and the tip of the electrode, the second shaft section having a second length and a second shaft diameter. The thickened portion has a greater overall diameter than any of the first and second shaft diameters thereby having a higher specific surface than the specific surface of the first shaft section and the specific surface of the second shaft section, respectively, and being arranged to limit the temperature of the electrode shaft at the inner wall by heat dissipation. The thickened portion has a minimum distance from the inner wall of at least 50% of the first shaft diameter, the length of the second shaft section is at least 100% of the second shaft diameter, and the first length is at most equal to the second length. | 07-08-2010 |
| 20110058384 | INTEGRATED LOW WATTAGE AUTOMOTIVE DISCHARGE LAMP - A first exemplary embodiment of an automotive discharge lamp assembly includes an integrated high intensity discharge lamp and driver assembly having a high voltage starter/igniter and a ballast unit contained in a common housing with a high intensity discharge lamp burner extending therefrom. A separate automotive headlamp optical assembly is mechanically and electrically joined to the integrated high intensity discharge lamp and driver assembly. The joining assembly includes snap-fit clamps received on one of (i) the headlamp assembly and (ii) the integrated lamp and driver assembly, and received in a recess/groove on the other of (i) the headlamp optical assembly and (ii) the integrated lamp and driver assembly. Another exemplary embodiment includes at least one bayonet pin extending outwardly from one of (i) the integrated lamp and driver assembly and (ii) the headlamp optical assembly for operative receipt in a recess or groove formed in the other component. | 03-10-2011 |
| 20110298365 | COMPACT METAL HALIDE LAMP WITH SALT POOL CONTAINER AT ITS ARC TUBE ENDPARTS - A high intensity discharge light source includes an arc tube having a longitudinal axis and a main central discharge chamber formed therein. The arc tube includes first and second electrodes having inner terminal ends spaced from one another along the longitudinal axis. Each electrode extends at least partially into the main central discharge chamber or reaches the end portions of the main central discharge chamber. The arc tube includes first and second sub-chambers located at opposite ends of a main central discharge chamber. The sub-chambers are located entirely axially outward from the inner terminal ends of the electrodes to form cold spot locations for the dose pool outside the main central discharge chamber. | 12-08-2011 |
| 20110298366 | HIGH INTENSITY DISCHARGE ARC TUBE AND ASSOCIATED LAMP ASSEMBLY - The discharge light source includes an arc tube with a discharge chamber having a predetermined location for a metal halide dose or salt pool that minimizes the impact on the light emitted from the light source. The discharge chamber is preferably asymmetric about a second axis that is perpendicular to a longitudinal axis. In one embodiment, the discharge chamber preferably includes first and second generally spheroidal portions of different diameters spaced along the longitudinal axis. The arc tube has different wall thicknesses in yet another arrangement. In a further exemplary embodiment, a portion of a wall that forms the discharge chamber includes a generally concave surface. These features may be used individually or in combination. | 12-08-2011 |
| 20110298367 | ARC SHAPED DISCHARGE CHAMBER FOR HIGH INTENSITY DISCHARGE AUTOMOTIVE LAMP - A method of forming a discharge lamp and the resultant discharge lamp include providing an arc tube having first and second ends offset from a central arcuate or curvilinear portion of the discharge chamber formed between the arc tube ends. Electrodes extend from the first and second ends and at least partially into the discharge chamber which is locally substantially rotationally symmetric, i.e., substantially circular cross-section over a length thereof. Preferably, the arc tube and discharge chamber have a curvilinear conformation where the first and second ends are located below the central portion of the arc tube and associated discharge chamber in horizontal orientation during operation. Terminal ends of the electrodes preferably follow a local axis of the curvilinear conformation. The wall thickness of the discharge chamber may be alternatively constant or non-constant along a longitudinal extent thereof. | 12-08-2011 |
| 20110298368 | DISCHARGE CHAMBER FOR HIGH INTENSITY DISCHARGE LAMP - A high intensity discharge light source includes an arc tube having a longitudinal axis and discharge chamber formed therein. The light source includes first and second electrodes having inner terminal ends spaced from one another along the longitudinal axis. Each electrode extends at least partially into the discharge chamber. The discharge chamber is deformed so that its internal geometry is substantially rotationally asymmetric about its longitudinal axis, and is substantially mirror-symmetric relative to a plane spanned by the longitudinal axis and by another transverse axis that is perpendicular to the longitudinal axis and is vertical in a horizontal arc tube orientation, as well as substantially mirror-symmetric relative to a central plane perpendicular to the longitudinal axis. In a preferred embodiment of the disclosure the discharge lamp is of a single ended construction and the arc tube of the lamp is of double ended configuration, the discharge lamp having proximal and distal end electric lead wires to connect the arc tube to the lamp base, and the distal end electric lead wire is running below and parallel to the longitudinal discharge chamber axis in a horizontal lamp orientation, and its lateral direction coincides with the lateral direction of the central convex portion of the laterally complex concave-convex-concave deformed surface portion all along the longitudinal axis of the discharge chamber. | 12-08-2011 |
