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| Number | Title | Issue Date |
| 7973476 | High-pressure mercury discharge lamp The invention relates to a high-pressure mercury discharge lamp for DC operation at a nominal wattage of more than 1.5 kW. Said high-pressure mercury discharge lamp comprises an anode, at least some areas of which are made of a material containing at least some tung... | 07/05/2011 |
| 7436121 | Light source device A light source device for a projector device having a discharge lamp with a silica glass discharge vessel containing a pair of opposed electrodes and at least 0.15 mg/mm3 of mercury, a concave reflector which surrounds the discharge lamp and reflects ligh... | 10/14/2008 |
| 7417377 | Blended light lamp The invention relates to a blended light lamp (1) having an incandescent lamp (2) and a gas discharge lamp (3), a rectifier (4), an energy storage means (5) and an ignition device (6). The high-pressure discharge has an oper... | 08/26/2008 |
| 7414368 | Ceramic metal halide lamp with cerium-containing fill A metal halide lamp (10) includes a discharge vessel (12) which may be formed of a ceramic material. The vessel defines an interior space (16). An ionizable fill is disposed in the interior space. The ionizable fill includes an inert gas and a h... | 08/19/2008 |
| 7388333 | High pressure discharge lamp having emission matching an absorption spectrum of green plant The invention relates to a high pressure discharge lamp intended for use in assimilation lighting. According to the invention the high-pressure discharge lamp has a discharge vessel, which besides a buffer gas, comprises substantially LiI as metal halide or a mixtur... | 06/17/2008 |
| 7345423 | Assembly of a fluorescent lamp and an extension means An energy-saving assembly of an elongate low-pressure mercury vapor discharge lamp (1) and at least one elongate extension (2). The low-pressure mercury vapor discharge lamp includes a light-transmitting discharge vessel (10) enclosing, in a gas... | 03/18/2008 |
| 7331837 | Coil antenna/protection for ceramic metal halide lamps The invention relates to a high-pressure discharge lamp of the ceramic metal halide type of the Philips MasterColor series having a molybdenum coil wrapped around the discharge vessel and at least a portion of the electrode feed through means, and having power range... | 02/19/2008 |
| 7323820 | Metal halide lamp The metal halide lamp has a ceramic discharge vessel and contains two groups of metal halides: a first group made up of the emitters and a second group made up of the wetters. The second group comprises at least one of the metal halides of Mg or Yb. ... | 01/29/2008 |
| 7319294 | Metal halide high pressure discharge lamp In the metal halide high-pressure discharge lamp for stage, film and television lighting systems and for projection technology and effect lighting, the discharge vessel contains dysprosium and cesium as fill metals for the metal halides. Optimum results for dimmabil... | 01/15/2008 |
| 7301282 | High pressure mercury lamps and sealing members therefor An object of the invention is to reduce the adverse effects due to a difference of thermal expansion between a conductive sealing member and a light-emitting vessel and to provide a reliable high pressure mercury lamp, even when the lamp is operated at a high pressu... | 11/27/2007 |
| 7298089 | High-pressure discharge lamp A high-pressure discharge lamp has a lamp bulb of silica glass encapsulating mercury, an inactive gas, and a mixed halogen gas containing at least two halogen gases, and at least a pair of electrodes disposed in the lamp bulb in confronting relation to each other. T... | 11/20/2007 |
| 7268495 | Ceramic metal halide lamp A metal halide lamp (10) includes a discharge vessel (12) which may be formed of a ceramic material. The vessel defines an interior space (16). An ionizable fill (17) is disposed in the interior space. The ionizable fill includes an inert... | 09/11/2007 |
| 7256546 | Metal halide lamp chemistries with magnesium and indium A metal halide fill for a discharge lamp is provided that is comprised of mercury and a mixture of metal halide salts which includes magnesium iodide as a full or partial replacement for calcium iodide. The replacement of at least some of the calcium iodide improves... | 08/14/2007 |
| 7253568 | High pressure discharge lamp lighting apparatus It is an object of the present invention to provide a high pressure discharge lamp lighting apparatus, has a structure to control decrease of illuminance on a screen which is thought to be a cause of wear of an anode in an early stage of the life span. The high pres... | 08/07/2007 |
| 7242138 | Electric light bulb An electric light bulb, in particular a halogen light bulb designed to be operated by mains voltage includes a substantially axially symmetrical bulb and a single-coil filament mounted in the bulb. The filament includes at least one incandescent coil section dispose... | 07/10/2007 |
| 7205723 | Electrodeless discharge lamp An electrodeless discharge lamp has a magnetic core 3, an induction coil 5, and a fixation member 7. The fixation member 7 has an elongation portion 7b extending in a direction along an axial line of the magnetic core 3 | 04/17/2007 |
| 7176626 | Method of controlling leachable mercury in lamps A method for inhibiting mercury from leaching from a land-filled arc discharge lamp containing a quantity of elemental mercury at least partially convertible to soluble mercury, provides for including within the lamp a quantity of a non-metallic copper-containing co... | 02/13/2007 |
| 7170229 | Short arc type super high pressure discharge lamp A short arc type super high pressure discharge lamp has a pair of electrodes, a light emitting portion in which greater than 0.15 mg/mm3 of mercury is enclosed, and sealing portions provided on both sides of the light emitting portion, wherein at least on... | 01/30/2007 |
| 7132797 | Hermetical end-to-end sealing techniques and lamp having uniquely sealed components A hermetically sealed lamp having at least one end-to-end seal. The end-to-end seal may be a material diffusion bond, a seal-material bond, or any other suitable bond. For example, the hermetically sealed lamp may have one or more endcaps butt-sealed to an arc envel... | 11/07/2006 |
| 7122960 | Emission device for an ultra-high pressure mercury lamp An emission device for an ultra-high pressure mercury lamp which maintains an electrode tip shape by which a stable discharge can always be carried out is achieved for a short arc ultra-high pressure mercury lamp with silica glass arc tube containing a pair of oppos... | 10/17/2006 |
| 7116053 | Method for arc attachment stabilization A method of stabilizing an arc between electrode tips in a high pressure arc discharge lamp is provided comprising initially creating an arc between the pair of electrodes during a start-up phase of the lamp by supplying power to the lamp for a first period. The met... | 10/03/2006 |
| 7097528 | Method for producing a high pressure discharge lamp, with sealing portion having first and second glass members A high pressure discharge lamp 100 comprises a luminous bulb 1 enclosing a luminous substance 6 inside and a sealing portion 2 for retaining the airtightness of the luminous bulb 1. The sealing portion 2 has a first glass po... | 08/29/2006 |
| 7098596 | Mercury-free arc tube for discharge lamp unit An arc tube for a discharge bulb is provided for use in a vehicular lighting system. The arc tube includes a closed glass bulb that is pinch-sealed at opposite ends. Inner ends of a first electrode and a second electrode extend into the closed glass bulbs from the e... | 08/29/2006 |
| 7097529 | Method for producing a high pressure discharge lamp, with sealing portion having first and second glass members A glass pipe 80 for a discharge lamp is prepared which includes a luminous bulb portion 1′ that will be formed into a luminous bulb of a high pressure discharge lamp and a side tube portion 2′. Subsequently, a glass member 70 made of ... | 08/29/2006 |
| 7012375 | Thallium-free metal halide fill for discharge lamps and discharge lamp containing same A thallium-free metal halide fill for ceramic metal halide lamps is provided wherein the fill comprises mercury, sodium iodide, an alkaline earth iodide selected from calcium iodide, strontium iodide, barium iodide, or combinations thereof, and a rare-earth iodide s... | 03/14/2006 |
| 6992445 | High intensity discharge lamp with single crystal sapphire envelope Described is a high intensity discharge lamp including a lamp bulb envelope, first and second electrodes, a seal and a fill situated within the lamp bulb envelope. The lamp bulb envelope is composed of single crystal sapphire tubing. The lamp bulb envelope includes ... | 01/31/2006 |
| 6972521 | Low-pressure gas discharge lamp having a mercury-free gas filling with an indium compound A low-pressure gas discharge lamp provided with a gas discharge vessel containing a mercury-free gas filling with an indium compound in an amount of about 1 to 10 microgram per cubic centimeter and a partial pressure in the range from 1.0 to 30 micro bar, and a buff... | 12/06/2005 |
| RE38807 | High pressure discharge lamp, with tungsten electrode and lighting optical apparatus and image display system using the same The present invention provides a high pressure discharge lamp which is provided with a discharge tube containing a pair of electrodes therein and being filled with mercury, an inert gas and a halogen gas, the amount of the mercury filled being 0.12 to 0.35 mg/mm | 10/04/2005 |
| 6940228 | Long-life high-pressure discharge lamp and lamp unit using same A high-pressure discharge lamp comprises a lamp tube made of quartz glass and having a central portion formed in a spherical shape, and a pair of opposing tungsten electrodes inserted into the lamp tube. At least one of the tungsten electrodes is made of a tungsten ... | 09/06/2005 |
| 6927539 | Device and method for operating a high pressure discharge lamp An ultra-high pressure high pressure discharge lamp device in which the lamp voltage and the distance between the lamp electrodes can be kept stable is achieved by an operating device supplying an alternating current with rectangular waves to the discharge lamp and ... | 08/09/2005 |
| 6911776 | High-pressure discharge lamp A long-life high-pressure discharge lamp suffers reduced blackening and luminance drop even after it has been turned on over a long period of time, and is arranged to prevent the internal gases from leaking out and also to prevent the lamp bulb from being ruptured. ... | 06/28/2005 |
| 6903509 | Ultrahigh pressure discharge lamp of the short arc type with improved metal foil to electrode connection arrangement An arrangement with a relatively high pressure tightness in a super-high pressure mercury lamp which is operated with an extremely high mercury vapor pressure is achieved in accordance with the invention in a super-high pressure discharge lamp of the short arc type ... | 06/07/2005 |
| 6888312 | Metal halide lamp for curing adhesives An arc lamp assembly which includes in combination a reflector and a light source which is surrounded by said reflector. A dichroic coating on the reflector functions to reflect radiation in the range of about 300 to 600 nm. The light source is an arc lamp which con... | 05/03/2005 |
| 6861806 | Super-high pressure discharge lamp of the short arc type An arrangement with relatively high pressure tightness in a super-high pressure mercury lamp of the short arc type which is operated with an extremely high mercury vapor pressure is achieved by the super-high pressure mercury lamp having the following characteristic... | 03/01/2005 |
| 6838823 | Discharge lamp An ultra-high pressure mercury lamp in which both devitrification and also breakage of the discharge vessel can be eliminated. In the ultra-high pressure mercury lamp, there is a pair of opposed electrodes in a fused silica glass discharge vessel filled at least 0.1... | 01/04/2005 |
| 6812644 | Reduced mercury ceramic metal halide lamp Arc tube (10) has a bulbous body (12) with a hollow center portion (14) and opposite ends (16, 18). Each of these ends has a cylindrical terminal-receiving section (20, 22) extending therefrom. The hollow center portion (14)... | 11/02/2004 |
| 6809478 | Metal halide lamp for automobile headlight A metal halide lamp for an automobile headlight is provided, which includes an arc tube in which a pair of tungsten electrodes are provided at both ends and a metal halide as a main component of a luminescent material and xenon gas as a buffer gas are sealed, wherei... | 10/26/2004 |
| 6731068 | Ceramic metal halide lamp A metal halide lamp comprised of a ceramic discharge chamber containing an ionizable fill, said fill comprising Hg, and halides (H) of Na, TI, an alkaline earth metal, and 0>rare earth element (Re) | 05/04/2004 |
| 6724145 | Discharge lamp The invention provides an arc tube with improved chromaticity and start-up characteristics that does not contain mercury, and provides a vehicle headlamp equipped with a metal halide lamp that contains no mercury in the arc tube. Among other improvements, the evapor... | 04/20/2004 |
| 6720731 | Mercury discharge lamp of the short arc type A short arc mercury discharge lamp including an arc tube filled with at least mercury and a rare gas, a cathode and an anode positioned opposite to each other within the arc tube, the cathode having an tapered area which tapers in a direction towards the anode and a... | 04/13/2004 |
