With Metal Vapor Patents (Class 313/638)
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Publication number: 20110031878Abstract: A high pressure gas discharge lamp 10 is described with a discharge vessel 20. Electrodes 24 project into a discharge space 22 of a volume of 12-20 mm3. The discharge space has a filling of rare gas and a metal halide composition which is free of mercury. The metal halide composition comprises at least halides of Sodium and Scandium with a mass ratio of halides of Sodium and Scandium of 0.9-1.5. The lamp 10 further comprises an outer enclosure 18 provided around the discharge vessel 20, which is sealed and filled with a gas at a pressure below 1 bar. The lamp 10 has an efficiency equal to or greater than 90 lm/W in a steady state operation at an electrical power of 25 W.Type: ApplicationFiled: April 7, 2009Publication date: February 10, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Michael Haacke, Ulrich Hechtfischer
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Publication number: 20110031879Abstract: A lamp includes a discharge vessel and electrodes extending into the discharge vessel. The lamp further includes an ionizable fill sealed within the vessel. The fill includes an inert gas and a halide component. The halide component includes a sodium halide, a thallium halide, at least one of a calcium halide and a strontium halide, and at least one of a rare earth halide. The rare earth halide is selected from the group consisting of lanthanum, cerium, praseodymium, samarium and neodymium, and combinations thereof.Type: ApplicationFiled: August 10, 2009Publication date: February 10, 2011Inventors: Timthoy David Russell, Gergely Ormandlaky, Gabor Mikovics
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Patent number: 7884535Abstract: A low-pressure gas discharge lamp includes a gas discharge vessel having a gas filling with a discharge-maintaining composition. At least part of a wall of the discharge vessel is provided with a luminescent material including a first UV-B phosphor containing, in a host lattice, gadolinium(III) as an activator and praseodymium(III) as a sensitizer.Type: GrantFiled: June 10, 2005Date of Patent: February 8, 2011Assignee: Koninklijke Philips Electronics N.V.Inventors: Thomas Juestel, Walter Mayr, Olaf Mastenbroek
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Publication number: 20110025204Abstract: [Problems] A mercury-free metal halide lamp improved in light beam maintaining rate by limiting an excessive temperature rise at the upper portion of an arc tube at starting, a metal halide lamp lighting device using this and a head light. [Means of Solving Problems] The metal halide lamp MHL comprises a translucent airtight container (1) having a discharge space (1c) inside thereof, the portion thereof facing the center part having a wall-thickness of at least 1.7 mm, a pair of electrodes (1b) sealed in the discharge space so as to face each other across a gap, and discharge medium sealed so as to contain a halide compound as a light emitting metal and rear gas but not to contain mercury (Hg) intrinsically, wherein a lamp voltage ratio V16/V0 satisfies V16/V0?1.Type: ApplicationFiled: July 26, 2006Publication date: February 3, 2011Inventors: Makoto Deguchi, Koji Tanabe
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Patent number: 7863819Abstract: The invention relates to a metal halide lamp comprising a ceramic discharge vessel (10), characterized in that an MoV leadthrough is connected to a PCA element (Al2O3) by means of a specific adhesive layer containing Al and Mo.Type: GrantFiled: November 29, 2006Date of Patent: January 4, 2011Assignee: OSRAM Gesellschaft Mit Beschraenkter HaftungInventors: Roland Hüttinger, Stefan Jüngst, Khanh Pham Gia, Steffen Walter
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Patent number: 7847484Abstract: An ionizable mercury-free and sodium-free composition is capable of emitting radiation if excited. A radiation source includes such an ionizable mercury-free and sodium-free composition. The ionizable mercury-free and sodium-free composition includes at least a metal, a metal and a metal compound, or a metal compound.Type: GrantFiled: December 20, 2004Date of Patent: December 7, 2010Assignee: General Electric CompanyInventors: David John Smith, Timothy John Sommerer, Joseph Darryl Michael, Vikas Midha, George Michael Cotzas
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Patent number: 7825598Abstract: A mercury-free discharge composition is provided. The mercury-free discharge composition may include Titanium, Zirconium, Hafnium, or combinations thereof, and a halogen. The composition may be capable of emitting radiation if excited, and the composition may produce a total equilibrium operating pressure of less than about 100,000 pascals if excited. A mercury-free discharge lamp is also provided. The mercury-free discharge lamp may include an envelope; an ionizable discharge composition including Titanium, Zirconium, Hafnium, or a combination thereof applied within the envelope.Type: GrantFiled: December 14, 2006Date of Patent: November 2, 2010Assignee: General Electric CompanyInventors: David John Smith, Joseph Darryl Michael, Timothy John Sommerer
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Publication number: 20100219755Abstract: With regard to a metal vapor discharge lamp with a triple tube structure including a discharge tube, an inner tube, and an outer tube, misalignment of axes of the inner tube and the outer tube is prevented. The metal vapor discharge lamp (14) is composed of a discharge tube (30) having a pair of electrodes therein, an inner tube (32) having a pinch-sealed part (86) at an end thereof and hermitically housing the discharge tube therein, and an outer tube (34) housing the inner tube therein, and a base (36). In a clearance between the inner tube and the outer tube, there disposed a restrain member (37) for restraining movement of the inner tube relative to the outer tube in a direction orthogonal to an axis of the metal vapor discharge lamp.Type: ApplicationFiled: May 29, 2007Publication date: September 2, 2010Applicant: PANASONIC CORPORATIONInventors: Rie Tonomori, Higashi Masanori, Kakisaka Shunsuke, Takeda Kazuo
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Publication number: 20100187995Abstract: A mercury-free arc tube for a discharge lamp unit including a closed glass bulb in which main light emitting substances of NaI, ScI3, and ScBr3 and buffer substances of InI and ZnI2 are enclosed together with Xe gas, and wherein an amount of enclosed ScBr3 is in a range of about 5 wt % to about 24 wt % relative to a total weight of the substances enclosed in the closed glass bulb. The mercury-free arc tube may also include a shroud glass tube, which is surrounds the closed glass bulb and a pair of electrodes, which are disposed to be opposed to each other in the closed glass bulb.Type: ApplicationFiled: January 22, 2010Publication date: July 29, 2010Applicant: KOITO MANUFACTURING CO., LTD.Inventors: Michio TAKAGAKI, Akira HOMMA, Takeshi FUKUYO
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Patent number: 7733026Abstract: The invention relates to a Hg free high pressure discharge lamp having a quartz envelope and a halide filling, wherein the lamp comprises at least one electrode which comprises tungsten and ?0 wt. % and ?0.5 wt. % thorium and whereby the lamp comprises at least one Mo-containing lead-in wire and/or foil whereby the Mo containing wire and/or foil comprises TiO2 and having a characteristic life time of ?2500 h and ?7500 h according to the EU Carmaker cycle test.Type: GrantFiled: July 1, 2005Date of Patent: June 8, 2010Assignee: Koninklijke Philips Electronics N.V.Inventors: Gerhard Hebbinghaus, Jozef Merx
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Patent number: 7733027Abstract: A high-pressure mercury vapor lamp suitable for sterilization purposes. Germanium and oxygen are added in small quantities to the mercury and/or the mercury halides, with a molar ratio of germanium to oxygen being greater than 1. The addition of germanium monoxide increases the GAC efficiency (GAC: short for Germicidal Action Curve) of a high-pressure mercury vapor lamp, because germanium monoxide emits a strong molecular band system in the range from 250 to 280 nm.Type: GrantFiled: January 5, 2005Date of Patent: June 8, 2010Assignee: Koninklijke Philips Electronics N.V.Inventors: Achim Gerhard Rolf Körber, Rainer Hilbig, Robert Peter Scholl, Johannes Baier
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Publication number: 20100117533Abstract: The invention relates to a discharge lamp comprising a group IVB monoxide radiation emitting material, which allows to greatly improve the features of the lamp due to the superior light emitting properties of the monoxide compound.Type: ApplicationFiled: April 9, 2008Publication date: May 13, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Achim Gerhard Rolf Koerber, Rainer Hilbig, Daiyu Hayashi, Stefan Schwan
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Patent number: 7714512Abstract: An arc discharge metal halide lamp for use in selected lighting fixtures having a discharge chamber with light permeable walls of a selected shape bounding a discharge region of a selected volume through which walls a pair of electrodes are supported with ionizable materials being provided in the discharge region of the discharge chamber comprising at least one member selected from a group consisting of halides of cerium, dysprosium, holmium, lithium, sodium, praseodymium, thallium and thulium, and further comprising a halide of calcium in a selected fraction of that weight total of all halides present in the discharge chamber with this selection depending also on the addition or not of a halide of aluminum. Others of the foregoing halides that are present are provided in amounts with certain limits.Type: GrantFiled: October 19, 2005Date of Patent: May 11, 2010Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Stefaan M. Lambrechts, Huiling Zhu, Jakob Maya, Timothy Lee Kelly
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Patent number: 7701141Abstract: The high pressure discharge lamp is fitted with a discharge vessel that has an inside volume with an inside length IL and a maximum inside diameter ID, and that is subdivided into a middle region of constant inside diameter ID and two end regions of variable inside diameter, an electrode projecting into the discharge vessel in the end region in each case. In addition, the discharge vessel has an aspect ratio of 2.5 to 8, preferably 3 to 6, the end region exhibiting a given length LRD in which the inside diameter is reduced to at least 85% of ID.Type: GrantFiled: June 1, 2006Date of Patent: April 20, 2010Assignee: OSRAM Gesellschaft mit beschraenkter HaftungInventors: Klaus Stockwald, Herbert Weiβ
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Patent number: 7696695Abstract: A metal halide discharge lamp comprises a lamp body and a chamber formed within the body. A pair of electrodes extends into the chamber and have electrode tips spaced apart from one another. A discharge medium composition is sealed within the chamber that generates a plasma, which generates visible light. The composition comprises a rare gas, a first metal halide that produces a luminous flux and zinc iodide that generates a desired lamp operating voltage. The composition may also comprise zinc, sealed in the chamber, in elemental form that is not derived from the first metal halide or the zinc iodide. The zinc iodide halide serves as a substitute for mercury for purposes of generating desired lamp operating voltage; and, the excess pure zinc attracts or reacts with iodine atoms thereby making available electrons and the first metal halide for generation of a luminous flux.Type: GrantFiled: October 1, 2007Date of Patent: April 13, 2010Assignee: General Electric CompanyInventors: Mohamed Rahmane, Agoston Boroczki, James Anthony Brewer, Sergiy Zalyubovskiy, Gabor Farkas, Steven Charles Aceto
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Patent number: 7683549Abstract: A metal halide fill for forming an ionizable fill comprises at least one inert gas, mercury and metal halides, comprising the constituents Na halide, Tl halide, Ca halide and halides of the rare earths. It also comprises Pb halide. This fill may be present in particular in the discharge vessel of a metal halide lamp which has an outer bulb.Type: GrantFiled: June 1, 2006Date of Patent: March 23, 2010Assignee: OSRAM Gesellschaft mit beschraenkter HaftungInventor: Teja Lehmann
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Publication number: 20100060165Abstract: The invention provides a metal halide lamp 1 wherein the concentration of the filling components fulfill a condition according to claim 1. Such a lamp is found to be a good alternative to existing high-pressure discharge lamps (Ceramic Discharge Metal halide lamps) based on rare earth fillings or other metal halide fillings. In addition, such a lamp can be dimmed without a substantial shift of the color point. Such a lamp can also have photometric properties that are substantially independent of the arrangement of the lamp and/or the external temperature.Type: ApplicationFiled: November 27, 2007Publication date: March 11, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Peter Jozef Vrugt, Changlong Ning
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Publication number: 20100052533Abstract: A method includes enhancing an illumination of a lamp including coating an interior surface of a discharge vessel of the lamp with a coating material; and heating the discharge vessel. A lamp includes a discharge vessel having a coating material.Type: ApplicationFiled: August 26, 2008Publication date: March 4, 2010Inventor: Seo-Yong Cho
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Publication number: 20100045184Abstract: A metal halide lamp is comprised of an airtight tube (1) having a discharge section (11) in which a discharge space (14) is formed; a discharge medium which is enclosed in the discharge space (14), contains metal halide (2) exhibiting a molar ratio of sodium halide to scandium halide of 1.5 or below and 8 atm or higher of xenon but does not substantially contain mercury; and a pair of electrodes (3a2, 3b2) with their tip ends arranged to oppose to each other in the discharge space (14), wherein halogen atoms bonded to metal in the metal halide (2) mostly consist of iodine and bromine atoms, and a ratio of the bromine atoms is in a range of 10 to 50% and the total amount of the metal halide (2) enclosed is 0.02 mg/?l or less.Type: ApplicationFiled: July 25, 2007Publication date: February 25, 2010Applicant: HARISON TOSHIBA LIGHTING CORP.Inventors: Makoto Deguchi, Kousuke Ueda
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Patent number: 7642722Abstract: A high-pressure discharge lamp which is suitable for motor vehicle headlights, has an improved color point stability close to the black body locus, a high color temperature, and a high luminous efficacy (lm/w). The high-pressure discharge lamp includes an inner vessel with a discharge chamber, with at least two electrodes extending into the discharge chamber, and an outer bulb surrounding the inner vessel. The discharge chamber contains an ionizable filling including at least one rare gas, 0-10 mg of mercury, and a metal halide mixture. The metal halide mixture includes 40-80% by weight of sodium halide, 25-55% by weight of scandium halide, 1-15% by weight of indium halide, and 0-34% by weight of thallium halide.Type: GrantFiled: August 29, 2003Date of Patent: January 5, 2010Assignee: Koninklijke Philips Electronics, N.V.Inventors: Klaus Schoeller, Rolf Gervelmeyer
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Patent number: 7633228Abstract: A metal halide discharge lamp comprises a lamp body and a chamber formed within the body. A pair of electrodes extends into the chamber and have electrode tips spaced apart from one another. A discharge medium composition is sealed within the chamber that generates a plasma, which generates visible light. The composition comprises a rare gas, a first metal halide that produces a luminous flux and a second metal halide that generates a desired lamp operating voltage. The composition may also comprise a metal, sealed in the chamber, in elemental form and is not derived from the first metal halide or the second metal halide. The second metal halide serves as a substitute for mercury for purposes of generating desired lamp operating voltage.Type: GrantFiled: November 30, 2005Date of Patent: December 15, 2009Assignee: General Electric CompanyInventors: Mohamed Rahmane, James Anthony Brewer, Steven Charles Aceto, Sergiy Zalyubovskiy
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Publication number: 20090302784Abstract: A high-pressure discharge lamp with a discharge vessel comprising electrodes; at least one noble gas as starting gas; at least one element selected from the group consisting of Al, In, Mg, Tl, Hg, Zn for arc transfer and discharge vessel wall heating; and at least one rare-earth halide for the generation of radiation. The lamp is designed in such a way that the light generated is dominated by molecular radiation.Type: ApplicationFiled: July 16, 2007Publication date: December 10, 2009Inventors: Steffen Franke, Helmut Hess, Lothar Hitzschke, Marko Käning, Ralf-Peter Methling, Bernhard Schalk, Hartmut Schneidenbach, Heinz Schöpp
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Publication number: 20090278457Abstract: The invention relates to a metal halide lamp (1) combining a high luminous efficacy and a high red rendering. This is realized by a lamp comprising a discharge vessel (10) with a ceramic wall, the discharge vessel enclosing a discharge space (11) which contains two electrodes and an ionisable filling, which filling contains at least 20 mol % of a Ca-halide, and one or more halides selected from the group of T1 and the rare earths, wherein the ionisable filling comprises Mg-halide, Mn-halide, or a mixture thereof in a molar quantity of at least 5 mol %, and preferably between 10 and 15 mol % of the total quantity of halides.Type: ApplicationFiled: April 24, 2006Publication date: November 12, 2009Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Vincent Fischer, Oscar Gerard Stappers, Jacobus Johannes Franciscus Gerardus Heuts
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Patent number: 7583030Abstract: A metal halide lamp having a high pressure quartz arc tube in which the electrodes are non-thoriated.Type: GrantFiled: July 21, 2004Date of Patent: September 1, 2009Assignee: Advanced Lighting Technologies, Inc.Inventors: Chakrapani V. Varanasi, Timothy R. Brumleve, Abbas Lamouri, Ajaypal Naruka
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Patent number: 7583028Abstract: A mercury free arc tube for a discharge lamp has a closed chamber filled with rare gas and a metal halide containing at least Na halide, Sc halide and In halide, and electrodes. A ratio of a filled amount of the In halide to a total filled amount of metal halide is ranging from 0.1 to 2.0 wt %. When the ratio of the charging amount of InI is 0.1 wt % or more, the chromaticity x, y of a luminescent color during a stable discharge falls within a chromaticity standard range A of white light source. When the ratio of charging amount of InI is 2.0 wt % or less, a chromaticity y minimal value of luminescence of the arc tube at the transient time is 0.29 or more, whereby purplish red color is less conspicuous and there is no fear that an emission of the arc tube is misidentified a red marker lamp.Type: GrantFiled: December 16, 2004Date of Patent: September 1, 2009Assignee: Koito Manufacturing Co., Ltd.Inventors: Michio Takagaki, Takeshi Fukuyo, Shinichi Irisawa
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Publication number: 20090200944Abstract: There is provided a mercury-free arc tube for a discharge lamp unit. The mercury-free arc tube includes a plurality of electrodes and a sealed chamber including a metal halide and a starting rare gas enclosed in the sealed chamber. A clearness index value P2·W/? is equal to or greater than about 800, where ? denotes a density (mg/cm3) of the enclosed metal halide, P denotes a pressure (atmospheres) of the enclosed starting rare gas, and W denotes a maximum input power (watts) input to the sealed chamber through the electrodes.Type: ApplicationFiled: February 11, 2009Publication date: August 13, 2009Applicant: KOITO MANUFACTURING CO., LTDInventors: Hiroyuki TAKATSUKA, Masaya SHIDO
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Patent number: 7573203Abstract: A mercury-free high-pressure discharge lamp includes a light-transmissive airtight envelope enclosing therein a discharge space, and a pair of electrodes sealed inside the light-transmissive airtight envelope and facing the discharge space, and the primary halide includes at least thulium bromide having an innumerable emission spectrum primarily around the peak of a luminosity curve and alkali metal halide, and the accessory halide contains one or more metal halides mostly selected from a group of Magnesium (Mg), Iron (Fe), Cobalt (Co), Chromium (Cr), Zinc (Zn), Nickel (Ni), Manganese (Mn), Aluminum (Al), Antimony (Sb), Bismuth (Bi), Beryllium (Be), Rhenium (Re), Gallium (Ga), Titanium (Ti), Zirconium (Zr), and Hafnium (Hf) which primarily contribute to fix lamp voltage.Type: GrantFiled: November 7, 2006Date of Patent: August 11, 2009Assignee: Toshiba Lighting & Technology CorporationInventors: Takahito Kashiwagi, Masazumi Ishida, Mikio Matsuda, Kozo Uemura
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Publication number: 20090167179Abstract: A low watt ceramic metal halide lamp has a body with a discharge chamber disposed therein. First and second hollow legs extend from the discharge chamber and received first and second electrode assemblies, respectively, therethrough with first ends of the electrode assemblies disposed in spaced relation in the discharge chamber. Use of thin legs limits heat flux from the discharge chamber. Preferably, thin legs are defined by a load dissipation factor of the ceramic part being less than 0.065 mm2/watt. In addition, thermal conductance along the leg is controlled via a load dissipation factor of the molybdenum mandrel portion of the electrode assembly being maintained less than 0.0008 mm2/watt.Type: ApplicationFiled: December 26, 2007Publication date: July 2, 2009Inventors: Gary R. Allen, Lei Deng
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Publication number: 20090134797Abstract: In a halogen-metal vapor lamp having a ceramic housing (2) and a current lead-through conductor (3) arranged in the ceramic housing, the glazed part of the current lead-through conductor (3) is a niobium alloy doped with phosphorus, in particular with 50 ppm to 0.5 wt. % phosphorus. The glazed part of the current lead-through conductor (3) preferably has inside the ceramic vessel (2) a shielding (4) from halides, which is connected to a tungsten electrode. The glazed part of a current lead-through conductor (3) in the form of a pin having a length of 5 to 30 mm and a diameter of 0.2 to 2 mm is a niobium alloy doped with phosphorus. For the glazing of current lead-through conductors in a ceramic burner, a current lead-through conductor made of a niobium alloy temperature-stabilized with phosphorus is glazed.Type: ApplicationFiled: September 24, 2008Publication date: May 28, 2009Applicant: W.C. Heraeus GmbHInventor: Bernd Spaniol
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Patent number: 7497974Abstract: The sensitivity of YPO4:Ce phosphors to 185 nm radiation may be increased by incorporating a praseodymium coactivator. The use of Ce and Pr as co-activators in a YPO4 phosphor improves the sensitivity of the phosphor to excitation by both 185 nm and 254 nm radiation and should increase total UVA and UVB output in fluorescent lamps. The co-activated phosphor has emission peaks at about 355 nm and about 335 nm.Type: GrantFiled: August 1, 2006Date of Patent: March 3, 2009Assignee: Osram Sylvania Inc.Inventors: Chen Wen Fan, Gregory A. Marking, Thomas M. Snyder
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Publication number: 20090045745Abstract: An object of the present invention is to provide an illumination apparatus which includes an illumination fixture having an open-type reflector and a metal halide lamp, and can suppress a decrease in intensity and occurrence of glare. An illumination apparatus (10) of the present invention includes a metal halide lamp (14) and an illumination fixture (12). The metal halide lamp includes an arc tube (30) which has therein a pair of electrodes, an inner tube (32) which houses the arc tube and has a pinch seal part at one end, and an outer tube (34) which houses the inner tube and has a base at one end. The illumination fixture includes a reflector (16) having a concave reflecting surface (20), a socket, and an attachment (18). In the inner tube, a diffusing part (88) which diffuses light emitted from the arc tube is formed in an area closer to a lower end of the inner tube than a center between the pair of electrodes.Type: ApplicationFiled: December 26, 2006Publication date: February 19, 2009Inventors: Shunsuke Kakisaka, Masanori Higashi, Rie Tonomori
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Publication number: 20090033227Abstract: A radiation source is presented, the source comprising an ionizable mercury-free composition that comprises tin halide such that the halide to tin ratio is greater than 2.Type: ApplicationFiled: September 30, 2008Publication date: February 5, 2009Applicant: GENERAL ELECTRIC COMPANYInventors: David John Smith, Timothy John Sommerer, Joseph Darryl Michael
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Publication number: 20090001887Abstract: An arc tube (6) of a metal halide lamp (1) has a ceramic envelope (10), a pair of electrodes (16), and metal halides enclosed therein. The arc tube (6) satisfies the relationship EL/Di>4.0, where EL represents the distance between the pair of electrodes (16) in mm, Di represents the maximum inside diameter of the arc tube (6) measured in mm at a portion positionally corresponding to the gap between the pair of electrodes (16). In addition, the metal halides enclosed within the arc tube (6) include at least sodium halide and neodymium halide. With this configuration, the metal halide lamp (1) achieves an improved emission color characteristic, while maintaining high lamp efficiency.Type: ApplicationFiled: January 11, 2006Publication date: January 1, 2009Inventors: Nobuyoshi Takeuchi, Atsushi Utsubo, Yukiya Kanazawa
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Patent number: 7468585Abstract: A metal halide lamp of the present invention has an arc tube formed of ceramic and a pair of opposing electrodes. This lamp includes a Pr (praseodymium) halide, a Na (sodium) halide, and a Ca (calcium) halide enclosed within the arc tube. The Pr halide content Hp [mol], the Na halide content Hn [mol], and the Ca halide content Hc [mol] satisfy the relationships of 0.4?Hc/Hp?15.0 and 3.0?Hn/Hp?25.0.Type: GrantFiled: July 22, 2004Date of Patent: December 23, 2008Assignee: Panasonic CorporationInventors: Atsushi Utsubo, Hiroshi Nohara, Yukiya Kanazawa, Yoshiharu Nishiura, Kiyoshi Takahashi, Makoto Kai, Makoto Horiuchi
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Publication number: 20080278077Abstract: A metal halide lamp comprising a discharge vessel surrounded by an outer envelope with clearance and having a ceramic wall which encloses a discharge space filled with a filling comprising an inert gas, such as xenon (Xe), and an ionizable salt, wherein in said discharge space two electrodes are arranged whose tips have discharge path between them, with the special feature that said ionizable salt comprises NaI, TlI, CaI2 and X-iodide wherein X is selected from the group comprising rare earth metals.Type: ApplicationFiled: March 1, 2005Publication date: November 13, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Johannes Jacobus Franciscus Geijtenbeek, Antonius Arnoldus Duisters, Theodorus Gerardus Marinus Maria Kappen, Joseph Leonardus Gregorius Suijker, Vincent Marco Fischer, Gerardus Marinus Josephus Franciscus Luijks, Hendrik Anton Van Esveld, Vital Louis Elisabeth Bruyndoncx
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Patent number: 7432658Abstract: In a metal halide vapor lamp, particularly for application in aquaria, having a fill containing GdBr3, HoJ3, DyJ3, CsJ and TlJ, the fill additionally contains InJ, whereby all the said ingredients are mixed with each other in such a ratio that on the CIE chromaticity diagram the color point of the lamp having the coordinates X=0.265 and Y=0.265 deviates in no direction for more than 7 SDMC.Type: GrantFiled: February 19, 2004Date of Patent: October 7, 2008Assignee: Flowil International Lighting (Holding) B.V.Inventor: Lode Derhaeg
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Publication number: 20080224615Abstract: The arc tube 3 comprises: a translucent ceramic envelope 19 including a central tube 16 having an inner diameter of 5.5 mm or more, thin tubes 18 formed, on contact with joining portions 17, onto both ends of the central tube 16, and at least one rare earth halide enclosed therein; and electrode inductors 24 and 25 inserted and sealed in the thin tubes 18. In a cross section of the arc tube 3 along a plane including the axis X in the longitudinal direction, an angle ? between the straight-line section of the inner surface of the central tube 16 and that of each joining portion 17 is set to 85°-115°. Clearance gaps 26 are formed between the thin tubes 18 and electrode inductors 24 and 25. The curvature radius of the inner surface of each boundary region 20 between the central tube 16 and joining portions 17 is set to 0.5 mm-2.5 mm.Type: ApplicationFiled: March 31, 2005Publication date: September 18, 2008Inventors: Masanori Higashi, Takashi Maniwa, Rie Tonomori
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Patent number: 7423380Abstract: Provided is a metal halide lamp capable of being dimmed, which is prevented from non-lighting due to leakage of an arc tube attributable to a crack occurring at thin tubes, as well as realizing a desired color characteristic. The metal halide lamp has an arc tube that includes an envelope made of translucent ceramic, a pair of electrodes, and metal halides, the metal halides including rare earth metal halide, sodium halide, and magnesium halide, the rare earth metal halide being at least one of dysprosium halide, thulium halide, holmium halide, cerium halide, and praseodymium halide, and the magnesium halide being at least one of magnesium iodide and magnesium bromide, where when a maximum lamp power P (W) is in a range of 70 W to 250 W, the following relations are satisfied: 0.0345A+0.0028B<0.0015 P+0.0475; A?0.021P+0.313; and B?10.0, where A (mg) represents a total content of the metal halides, and B (mol %) represents a content ratio of the magnesium halide to the metal halides.Type: GrantFiled: August 5, 2005Date of Patent: September 9, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Isao Ota, Kazuo Takeda, Kazushige Sakamoto
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Publication number: 20080203890Abstract: A low-pressure gas discharge lamp is described that has, in a gas-discharge vessel, one or more inert gases as a buffer gas and means for producing, and maintaining a low-pressure gas discharge and that contains a gallium halide or a mixture of a plurality of gallium halides, to which indium and/or thallium may also preferably be added. A low-pressure gas discharge lamp of this kind produces sufficient UV radiation for it to be used in tanning devices.Type: ApplicationFiled: September 20, 2004Publication date: August 28, 2008Inventors: Rainer Hilbig, Robert Scholl
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Patent number: 7417375Abstract: In a metal halide lamp, xenon gas having a pressure of at least 3 atmospheres at room temperature and at least a metal halide including indium iodide are sealed in a discharge space not containing mercury. If the volume of the discharge space is denoted by V (mm3), the electric power applied to the arc tube by P (W), and the weight of the indium iodide by X (?g), these parameters are set so as to satisfy a relationship (P/V)(X/V)0.2>3.0. A continuous emission spectrum can thereby be produced by indium over the entire visible wavelength range, thus obtaining a mercury-free metal halide lamp that is usable as an excellent white light source suitable for data projectors, automobile lamps, headlights, and other systems and devices.Type: GrantFiled: September 26, 2005Date of Patent: August 26, 2008Assignee: Stanley Electric Co., Ltd.Inventors: Masaaki Muto, Shinya Omori
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Patent number: 7414368Abstract: 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 halide component. The halide component includes a sodium halide, a cerium halide, at least one of a thallium halide and an indium halide, and optionally a cesium halide. The cerium halide is at least about 9 mol % of the halide component. At least one electrode (18, 20) is positioned within the discharge vessel so as to energize the fill when an electric current is applied thereto.Type: GrantFiled: January 21, 2005Date of Patent: August 19, 2008Assignee: General Electric CompanyInventors: Joshua I. Rintamaki, Dennis S. Bradley
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Patent number: 7414367Abstract: A high-pressure metal halide discharge lamp which comprises, as filling, only zinc, a halogen and a noble gas. In order to improve the color rendering index, a calcium halide may be added to the lamp filling. The coupling-in of energy preferably takes place without electrodes in the radio-frequency range or in the microwave range, but may also be carried out by means of metal electrodes.Type: GrantFiled: April 2, 2004Date of Patent: August 19, 2008Assignee: Koninklijke Philips Electronics, N.V.Inventors: Johannes Baier, Rainer Hilbig, Achim Gerhard Rolf Körber, Robert Peter Scholl, Matthias Born
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Patent number: 7391154Abstract: A low-pressure gas discharge lamp includes a gas discharge vessel containing an inert gas filling as a buffer gas, and electrodes for generating and maintaining a low-pressure gas discharge. The lamp contains at least one tin halide.Type: GrantFiled: September 1, 2003Date of Patent: June 24, 2008Assignee: Koninklijke Philips Electronics, N.V.Inventors: Robert Peter Scholl, Rainer Hilbig, Achim Gerhard Koerber, Johannes Baier
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Patent number: 7388332Abstract: A metal vapor discharge lamp whose near-infrared radiation is stronger than a conventional high-pressure discharge lamp, a projector utilizing this discharge lamp, and a metal vapor discharge lamp lighting device are disclosed. The metal vapor discharge lamp comprises a refractory light-transmitting hermetic vessel, a pair of electrode fixed to the hermetic vessel, and a discharge medium sealed in the hermetic vessel and containing a halide and a rare gas. Most of the light irradiated when the discharge lamp is in the ON state has near-infrared wavelengths (750–1100 nm).Type: GrantFiled: October 8, 2003Date of Patent: June 17, 2008Assignees: Harison Toshiba Lighting Corp., Toshiba Lighting & Technology CorporationInventors: Toshihiko Ishigami, Kozo Uemura, Mikio Matsuda, Toshio Hiruta, Hiroyoshi Takanishi, Hideo Inoue
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Patent number: 7352132Abstract: A metal halide lamp includes a refractory, light-transmitting hermetic vessel, a pair of electrodes sealed in thehermetic vessel, a discharge medium including a halide and a rare gas, and metal storing means storing at least one selected from the group consisting of potassium (K), rubidium (Rb) and cesium (Cs), the metal storing means being heated during lighting and gradually discharging at least one metal in the hermetic vessel.Type: GrantFiled: November 30, 2004Date of Patent: April 1, 2008Assignee: Harison Toshiba Lighting Corp.Inventors: Toshihiko Ishigami, Mikio Matsuda, Toshio Hiruta
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Patent number: 7323820Abstract: 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.Type: GrantFiled: March 1, 2006Date of Patent: January 29, 2008Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbHInventors: Stefan Jüngst, Klaus Stockwald
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Patent number: 7319294Abstract: 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 dimmability, arc instability and color rendering are achieved if the fill additionally includes 0.12 to 3.8 ?mol of vanadium and if appropriate 0.05 to 1.0 ?mol of zirconium per ml of vessel volume. These metals achieve improved color rendering, in particular red rendering, with an Ra of from 70 to 95 and an R9 of from 45 to 90.Type: GrantFiled: June 6, 2006Date of Patent: January 15, 2008Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbHInventor: Hans-Werner Golling
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Patent number: 7298089Abstract: 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. The type and content of a primary halogen gas whose content is the greatest in the mixed halogen gas are determined based on a bulb wall load.Type: GrantFiled: May 7, 2004Date of Patent: November 20, 2007Assignee: NEC CorporationInventor: Kazuhisa Nishida
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Patent number: 7265493Abstract: A radiation source with an ionizable mercury-free composition. The ionizable composition including at least zinc or at least one zinc compound or both.Type: GrantFiled: October 4, 2004Date of Patent: September 4, 2007Assignee: General Electric CompanyInventors: Timothy John Sommerer, Joseph Darryl Michael, David John Smith, Vikas Midha, George Michael Cotzas
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Patent number: 7262553Abstract: An arc discharge metal halide lamp for use in selected lighting fixtures comprising a discharge chamber having light permeable walls of a selected shape including therein a pair of end region wall portions through each of which a corresponding one of a pair of electrodes are supported separated from one another by a separation length. The ratio of the separation length to the effective operation inner diameter of the chamber is greater than two. The lengths of the wall sides between the end wall portions is greater than the effective operation inner diameter. The end wall portions have inner surfaces of constant or smaller varying radii of curvature and they are separated from the interior ends of the electrodes by more than one millimeter. The discharge chamber can be constructed of polycrystalline alumina and contain metal halides.Type: GrantFiled: June 26, 2003Date of Patent: August 28, 2007Assignees: Matsushita Electric Industrial Co., Ltd., Matsushita Electric Works, Ltd.Inventors: Nanu Brates, Shinichi Anami, Huiling Zhu, Stefaan M. Lambrechts, Jakob Maya