With Metal Vapor Patents (Class 313/638)
  • Patent number: 9171712
    Abstract: A lamp to produce white light includes an envelope; and a composition disposed in the envelope and including an initiator; a primary halide; and a secondary halide, wherein the primary halide, in a presence of the secondary halide, has a vapor pressure that is greater than a vapor pressure in an absence of the secondary halide, and the composition is configured to emit white light in a presence of an electrical discharge in the envelope.
    Type: Grant
    Filed: July 5, 2014
    Date of Patent: October 27, 2015
    Assignee: NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY
    Inventors: John J Curry, Walter P Lapatovich, Edgar G Estupinan
  • Patent number: 9018838
    Abstract: The invention describes a high intensity gas-discharge lamp (1) comprising a discharge vessel (5, 5?) enclosing a fill gas in a discharge chamber (2) and comprising a pair of electrodes (3, 3?, 4, 4?) extending into the discharge chamber (2), and wherein the fill gas includes a halide composition comprising a halide of sodium and, optionally, scandium iodide to a total proportion of at least 30 wt %, and a halide of terbium and/or gadolinium to a proportion of at least 5 wt %.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: April 28, 2015
    Assignee: Koninklijke Philips N.V.
    Inventor: Klaus Schoeller
  • Patent number: 8901817
    Abstract: The present invention relates to a metal halide lamp with a ceramic discharge tube, which includes a ceramic discharge tube and two electrodes. The ceramic discharge tube includes a main discharge tube and two ceramic capillary tubes respectively located at two ends of the main discharge tube, the main discharge tube has a central protuberant part located in the middle thereof and two cylindrical parts respectively connected to two ends of the central protuberant part, the two cylindrical parts are respectively connected to the two ceramic capillary tubes.
    Type: Grant
    Filed: November 25, 2010
    Date of Patent: December 2, 2014
    Assignee: Shanghai Yaming Lighting Co., Ltd.
    Inventors: Hua Yao, Feng Li
  • Patent number: 8836217
    Abstract: A mercury-free metal halide lamp for a vehicle according to an embodiment includes an airtight vessel 1 provided with a light-emitting part 11 with a discharge space 111 inside, a metal halide 2 and a rare gas sealed in the discharge space 111, and a pair of electrodes 32 disposed so that the tip ends of the respective electrodes 32 face each other in the discharge space 111. The electrodes 32 and the discharge space 111 do not contain thorium. When an electric power supplied to the lamp during a stable lighting period is represented by P (W), a value obtained by adding up the electric power supplied to the lamp during a period between 1 second and 40 seconds after the startup of the lamp is represented by WL (W), and the diameter of the electrodes 32 is represented by D (mm), P (W) satisfies 20?P?30 and WL/D (W/mm) satisfies 4300?WL/D?7400.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: September 16, 2014
    Assignee: Toshiba Lighting & Technology Corporation
    Inventor: Satoko Kato
  • Patent number: 8749138
    Abstract: The present invention is to provide a novel ultraviolet irradiation metal halide lamp which can produce more intense light of ultraviolet region with a wavelength near 365 [nm]. This lamp is a metal halide lamp to produce mainly light of ultraviolet region. In order to produce light with a high spectrum in ultraviolet region, particularly, light of a wavelength of 350 to 380 [nm], at least mercury (Hg) and an iron are sealed into this lamp together with a rare gas. The sealed iron into the lamp is supplied by iron iodide (FeI2) and iron bromide (FeBr2) as iron halide (FeX2) and metal iron (Fe). When a quantity of materials sealed into the lamp is expressed such that A represents a quantity of metal iron sealed into the lamp, B represents a quantity of iron iodide sealed into the lamp and C represents a quantity of iron bromide sealed into the lamp, respectively, the quantity A of the metal iron falls within the range of 0.5(B+C)?A?10.
    Type: Grant
    Filed: January 2, 2012
    Date of Patent: June 10, 2014
    Assignee: Iwasaki Electric Co., Ltd.
    Inventors: Hidemi Orito, Masayuki Ohno, Sadaharu Nishida, Sachio Noguchi, Kazuki Kanomata, Kenji Ubukata
  • Publication number: 20140125224
    Abstract: A mercury-free metal halide lamp for a vehicle according to an embodiment includes an airtight vessel 1 provided with a light-emitting part 11 with a discharge space 111 inside, a metal halide 2 and a rare gas sealed in the discharge space 111, and a pair of electrodes 32 disposed so that the tip ends of the respective electrodes 32 face each other in the discharge space 111. The electrodes 32 and the discharge space 111 do not contain thorium. When an electric power supplied to the lamp during a stable lighting period is represented by P (W), a value obtained by adding up the electric power supplied to the lamp during a period between 1 second and 40 seconds after the startup of the lamp is represented by WL (W), and the diameter of the electrodes 32 is represented by D (mm), P (W) satisfies 20?P?30 and WL/D (W/mm) satisfies 4300?WL/D?7400.
    Type: Application
    Filed: February 21, 2012
    Publication date: May 8, 2014
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventor: Satoko Kato
  • Patent number: 8710742
    Abstract: The present disclosure describes metal halide lamps having a discharge vessel, a discharge space, and at least one electrode extending into the discharge vessel in a sealed fashion so as to be in contact with the discharge space. A fill gas, at least one fill material, and optionally at least one volatile material are present in the discharge space. In some cases, the lamps can exhibit at least one of reduced run-up time, increased initial light output, and long life, while remaining useful for general lighting applications. Also described are methods for operating such metal halide lamps.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: April 29, 2014
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Nancy H. Chen, James A. Avallon, Edgar G. Estupiñán
  • Publication number: 20140077694
    Abstract: A ceramic metal-halide lamp is provided that can improve both lamp efficacy and color characteristics, and in which light color shift from the white region can be prevented when the lamp is dimmed. The lamp includes a luminous material, which contains sodium iodide (NaI), cerium iodide (CeI3), thallium iodide (TIl), dysprosium iodide (DyI3) and indium iodide (InI). The amount D[DyI3] of dysprosium iodide DyI3 is selected so as to fall within a range of 0.07 mg/cm3?D[DyI3]?1.53 mg/cm3 and a weight ratio R[InI/TIl] of indium iodide InI relative to thallium iodide TIl contained in the luminous material is selected to so as to fall within a range of 0<R[InI/TIl]?0.23.
    Type: Application
    Filed: September 9, 2013
    Publication date: March 20, 2014
    Applicant: IWASAKI ELECTRIC CO., LTD.
    Inventors: Yasuhisa Matsumoto, Yasushi Sasai, Akiyoshi Maehara
  • Patent number: 8653731
    Abstract: It is an object of the present invention to provide a metal halide lamp in which arc discharge in the initial stage of lamp lighting can be stabilized. A metal halide lamp includes a translucent outer tube with a base formed at one end thereof and a light-emitting portion disposed in the outer tube. This metal halide lamp is configured as a vertical mounting type such that the base thereof looks toward the upper side. The discharge tube has mercury and metal halides enclosed therein. Assuming that a lamp rated power is P [W], then a mercury concentration d(Hg) [?mol/cm3] in the discharge tube falls within a range of values of ±10% of a mercury concentration d(Hg) obtained by the following equation “d(Hg)=0.0007P2?0.4113P+99.557”.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: February 18, 2014
    Assignee: Iwasaki Electric Co., Ltd.
    Inventor: Yasuhisa Matsumoto
  • Patent number: 8598789
    Abstract: A high pressure gas discharge lamp has electrodes that project into a discharge space surrounded by a discharge wall. The discharge space has a filling of rare gas and metal halides. The metal halide composition comprises halides of sodium and scandium with a mass ratio of halides of Sodium and Scandium of 0.9-1.5. In order to provide a lamp that can be easily manufactured and is well suited for operation at reduced power, the discharge vessel wall is of externally and internally cylindrical shape. The lamp may be manufactured by providing a cylindrical tube of quartz material, heating the tube at two distant portions and forming grooves there, inserting two electrodes into the tube and heating and pinching the tube at both ends to seal the discharge space. Manufacture is carried out without a bulb forming step such that the discharge space remains in externally and internally cylindrical shape.
    Type: Grant
    Filed: September 7, 2009
    Date of Patent: December 3, 2013
    Assignee: Koninklijke Philips N.V.
    Inventors: Michael Haacke, Ralf Muckel, Wilfried Emunds, Manfred Westemeyer
  • Patent number: 8564200
    Abstract: 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: Grant
    Filed: November 27, 2007
    Date of Patent: October 22, 2013
    Assignee: Koninklijke Philips N.V.
    Inventors: Peter Jozef Vrugt, Changlong Ning
  • Patent number: 8558457
    Abstract: A lamp (14) has an inner tube (32) pinch sealed at one end to form a pinch seal (82), to which a base (36) is attached. The base (36) has a pair of base pins (102, 104) provided in parallel to the axis of the inner tube (32). A pair of connection wires (98, 100) that extend out from the pinch seal (82) are inserted into the respective base pins (102, 104) and are fixed by concavities located in a portion of the base pins (102, 104). Each of the concavities is concave in a direction orthogonal to the base pins (102, 104) and parallel to an imaginary plane that traverses central axes of the base pins (102, 104).
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: October 15, 2013
    Assignee: Panasonic Corporation
    Inventors: Atsushi Utsubo, Shunsuke Kakisaka, Jun Tominaga, Masahito Yoshida
  • Patent number: 8502450
    Abstract: With respect to a vacuum tube having a reduced pressure vessel containing an electric discharge gas sealed therein, problems such as the lowering of discharge efficiency owing to an organic material, moisture or oxygen remaining in the reduced pressure vessel have taken place conventionally. It has been now found that the selection of the number of water molecules, the number of molecules of an organic gas and the number of oxygen molecules remaining in the reduced pressure vessel, in a relation with the number of molecules of a gas contributing the electric discharge allows the reduction of the adverse effect by the above-mentioned remaining gas. Specifically, the selection of the number of molecules of the above electric discharge gas being about ten times that of the above-mentioned remaining gas or more can reduce the adverse effect by the above-mentioned remaining gas.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: August 6, 2013
    Assignee: Foundation for Advancement of International Science
    Inventors: Tadahiro Ohmi, Akihiro Morimoto
  • Patent number: 8497633
    Abstract: Disclosed herein are lamps which comprises a discharge vessel comprised of a ceramic material; at least one electrode extending into the discharge vessel; an ionizable fill sealed within the discharge vessel, the fill comprising Hg, a buffer gas component, and a halide component comprising at least an alkali metal halide component and a rare earth halide component; a source of available oxygen; and a metallic component. The discharge vessel defines an interior space which comprises available oxygen during lamp operation conditions. Also disclosed herein are associated methods for making and using such lamps. Disclosed advantages may include mitigating some of the deleterious effects of highly electronegative species, enhanced lumens, and balancing the level of available oxygen for wall cleaning.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: July 30, 2013
    Assignee: General Electric Company
    Inventors: Deeder Aurongzeb, Emily Lauren Martis
  • Patent number: 8482198
    Abstract: A lamp includes a discharge vessel; electrodes spaced apart in the discharge vessel comprising tungsten or tungsten alloy; and a fill sealed within the vessel having a pressure between 50-200 mbar. The fill includes: a starting gas which comprises: xenon, krypton, argon or combinations thereof with the exception of pure argon; optionally radioactive Kr85 with a maximum activity level of 0.124 MBq/l as part of the starting gas; and a metal halide component. The lamp includes an active tungsten regeneration cycle wherein the fill comprises a species of the tungsten or tungsten alloy of material of the electrodes during lamp operation, wherein the solubility of tungsten or components of tungsten alloy in the tungsten or tungsten alloy species is lower in a gas phase adjacent to the electrodes than at close proximity of the wall of the discharge vessel.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: July 9, 2013
    Assignee: General Electric Company
    Inventors: Agoston Boroczki, Peter Akos
  • Patent number: 8436539
    Abstract: A high-pressure gas discharge lamp has a sealed discharge vessel with an inner discharge space. Two electrodes project into the discharge space. The filling in the discharge space includes metal halides and a rare gas. The filling is free of Hg and Th and includes halides in an amount of 7.1-11.4 ?g/mm3 of the volume of the discharge space. The halides includes at least NaI and ScI3, provided in such amounts that a ratio of the masses of NaI to ScI3 is 1.2-1.6.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: May 7, 2013
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Michael Haacke, Norbert Lesch
  • Patent number: 8410698
    Abstract: A high pressure gas discharge lamp includes a discharge vessel with electrodes that project into a discharge space 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 includes at least halides of Sodium and Scandium with a mass ratio of halides of Sodium and Scandium of 0.9-1.5. The lamp further includes an outer enclosure provided around the discharge vessel. The outer enclosure is sealed and filled with a gas at a pressure below 1 bar. The lamp has an efficiency equal to or greater than 90 Im/W in a steady state operation at an electrical power of 25 W.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: April 2, 2013
    Assignee: Koninklijke Philips Electronics N. V.
    Inventors: Michael Haacke, Ulrich Hechtfischer
  • Patent number: 8390198
    Abstract: A discharge lamp with excellent arc stability and excellent durability in which the use level of thoriated tungsten is restrained has an anode and a cathode in the interior of a discharge vessel, wherein said cathode is made up from a thoriated tungsten part with a tungsten filling ratio of at least 90 vol.-% and a main body part connected to said thoriated tungsten part and consisting of pure tungsten, wherein a ratio ST/S of a side surface area ST of said thoriated tungsten part and a side surface area S of said cathode is in a range of from 0.005 to 0.15, with the proviso that, in case the cathode has a length in the direction of the cathode axis which exceeds twice the maximum diameter of the cathode, a side surface area S is used for calculating the ratio ST/S which corresponds to the side surface area where the distance along the cathode axis from a tip end adjacent to the anode is twice the maximum diameter of the cathode.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: March 5, 2013
    Assignee: Ushio Denki Kabushiki Kaisha
    Inventors: Akihiro Shimizu, Tomoyoshi Arimoto, Mitsuru Ikeuchi
  • Publication number: 20130038207
    Abstract: The invention describes a mercury-free high-intensity gas-discharge lamp (1) comprising a discharge vessel (5) enclosing a fill gas in a discharge chamber (2) and comprising a pair of electrodes (3, 4) extending into the discharge chamber (2), for which lamp (1) the fill gas is derived from a salt fill introduced into the discharge chamber (2) prior to sealing, which salt fill is free of scandium and includes a halide composition comprising a sodium halide to a proportion of at least 65 wt % and at most 97.2 wt %,a thallium halide to a proportion of at least 2 wt % and at most 25 wt %, and an indium halide to a proportion of at least 0.5 wt % and at most 25 wt %. Eliminating the highly reactive scandium from the fill gas significantly improves lumen maintenance.
    Type: Application
    Filed: April 12, 2011
    Publication date: February 14, 2013
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Michael Haacke, Timo Borlet
  • Patent number: 8358070
    Abstract: A lamp includes a discharge vessel. Tungsten electrodes extend into the discharge vessel. An ionizable fill is sealed within the vessel. The fill includes a buffer gas and a halide component that includes a rare earth halide. A source of oxygen which includes a lanthanide oxide is present in the discharge vessel. The source of oxygen provides oxygen for a regenerative cycle which reduces blackening of the lamp walls by tungsten from the electrodes.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: January 22, 2013
    Assignee: General Electric Company
    Inventors: Jianmin He, Zoltan Toth, Timothy David Russell
  • Publication number: 20130015754
    Abstract: The present invention provides a low pressure metal halide fluorescent lamp. The metal halide fluorescent lamp may have an oblate spheroid cavity discharge vessel filled with an ionizable metal halide surrounding an exciter housing. An exciter within the exciter housing may drive the ionizable metal halide in an inductively coupled electrode-less manner. One or more embodiments may include one or more heat spreaders and/or thermal transfer pipes for transferring heat from the exciter to a surface of the oblate discharge vessel.
    Type: Application
    Filed: July 11, 2011
    Publication date: January 17, 2013
    Applicant: OSRAM SYLVANIA INC.
    Inventor: Philip E. Moskowitz
  • Patent number: 8324795
    Abstract: A fluorescent lamp may include a pair of hot cathode electrodes at both its ends, wherein a phosphor is formed in a laminated manner on the inner surface of a glass tube and a protection film is formed between the glass tube and the phosphor, wherein a residual impure gas in the lamp, including the amount occluded by the phosphor and the protection film, is set to 0.5% or less with the sealed rare gas partial pressure ratio, and wherein the following relationship is fulfilled: GHg=A×CL, A=0.0032-0.163 [mg/cc], wherein the amount of sealed mercury is GHg [mg], the lamp internal volume is CL [cc], and the coefficient is A [mg/cc].
    Type: Grant
    Filed: December 25, 2009
    Date of Patent: December 4, 2012
    Assignee: Osram AG
    Inventors: Keigo Iwase, Yukio Matsuda, Takashi Osawa, Takehiko Sakurai
  • Patent number: 8253331
    Abstract: A fluorescent lamp includes a discharge tube having an inner wall forming a discharge chamber. One or more coiled electrodes are disposed within the discharge tube. A mercury containing composition is disposed on at least one coiled electrode.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: August 28, 2012
    Assignee: General Electric Company
    Inventors: Zoltan Somogyvari, Laszlo Balazs
  • Publication number: 20120187829
    Abstract: A lamp (14) has an inner tube (32) pinch sealed at one end to form a pinch seal (82), to which a base (36) is attached. The base (36) has a pair of base pins (102, 104) provided in parallel to the axis of the inner tube (32). A pair of connection wires (98, 100) that extend out from the pinch seal (82) are inserted into the respective base pins (102, 104) and are fixed by concavities located in a portion of the base pins (102, 104). Each of the concavities is concave in a direction orthogonal to the base pins (102, 104) and parallel to an imaginary plane that traverses central axes of the base pins (102, 104).
    Type: Application
    Filed: January 21, 2011
    Publication date: July 26, 2012
    Inventors: Atsushi Utsubo, Shunsuke Kakisaka, Jun Tominaga, Masahito Yoshida
  • Publication number: 20120161623
    Abstract: Disclosed herein are mercury free ceramic metal halide high intensity discharge lamps of specified arc tube geometry and composition of ionizable fill. Embodiments herein generally employ a discharge vessel formed of a ceramic material having an aspect ratio satisfied by 1<ITL/ID<4.5 where ITL is the inner total length of the discharge vessel and ID is the inner diameter of the discharge vessel. The ionizable fill typically comprises xenon at a cold fill pressure of from about 3 to about 15 bar, and a halide component comprising sodium halide, thallium halide and/or indium halide, and at least one rare earth halide. Disclosed advantages may include betterment in both lumen run-up and color shift upon dimming, as compared to mercury-containing CMH HID lamps.
    Type: Application
    Filed: December 28, 2010
    Publication date: June 28, 2012
    Inventors: Tamás PANYIK, István Csányi, József Gábeli, István Maros
  • Patent number: 8207674
    Abstract: A lamp includes a discharge vessel with electrodes extending into the discharge vessel and an ionizable fill sealed within the vessel. The fill includes a buffer gas, optionally mercury, and a halide component comprising a sodium halide, a lanthanum halide, a thallium halide, and a calcium halide. The lanthanum halide is present in the halide component at a mol fraction of at least 0.03.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: June 26, 2012
    Assignee: General Electric Company
    Inventor: Raghu Ramaiah
  • Patent number: 8193711
    Abstract: A metal halide lamp is comprised of an airtight tube having a discharge section in which a discharge space is formed; a discharge medium which is enclosed in the discharge space, contains metal halide 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 with their tip ends arranged to oppose to each other in the discharge space, wherein halogen atoms bonded to metal in the metal halide 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 enclosed is 0.02 mg/?l or less.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: June 5, 2012
    Assignee: Harison Toshiba Lighting Corp.
    Inventors: Makoto Deguchi, Kousuke Ueda
  • Publication number: 20120126696
    Abstract: A metal halide lamp having a luminous tube formed of translucent alumina as translucent ceramic in which additives of halides are sealingly included to emit at least red, blue and green light components, wherein an energy rate of a red light component is set to 55% to 75% and an energy ratio of a blue light component is set to 15% to 25%.
    Type: Application
    Filed: November 22, 2011
    Publication date: May 24, 2012
    Applicant: IWASAKI ELECTRIC CO., LTD.
    Inventors: Yoshihisa Shibata, Kenji Okayasu, Shinji Tazawa
  • Publication number: 20120126695
    Abstract: The invention relates generally to ceramic metal halide lamps. More particularly, the invention relates to low wattage ceramic metal halide lamps having enhanced color control. In one embodiment according to the invention, such lamps may be characterized by a shank length (SL) to shank diameter (SD) ratio of between 5.1 and 15.5. Further, the lamp exhibits a sigma CCT of less than about 100° K.
    Type: Application
    Filed: November 24, 2010
    Publication date: May 24, 2012
    Inventor: Raghu Ramaiah
  • Patent number: 8174195
    Abstract: 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: Grant
    Filed: January 22, 2010
    Date of Patent: May 8, 2012
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Michio Takagaki, Akira Homma, Takeshi Fukuyo
  • Patent number: 8098014
    Abstract: 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: Grant
    Filed: February 11, 2009
    Date of Patent: January 17, 2012
    Assignee: Koito Manufacturing Co., Ltd
    Inventors: Hiroyuki Takatsuka, Masaya Shido
  • Publication number: 20110304266
    Abstract: The invention describes a high intensity gas-discharge lamp (1) comprising a discharge vessel (5, 5?) enclosing a fill gas in a discharge chamber (2) and comprising a pair of electrodes (3, 3?, 4, 4?) extending into the discharge chamber (2), and wherein the fill gas includes a halide composition comprising a halide of sodium and, optionally, scandium iodide to a total proportion of at least 30 wt %, and a halide of terbium and/or gadolinium to a proportion of at least 5 wt %.
    Type: Application
    Filed: February 17, 2010
    Publication date: December 15, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventor: Klaus Schoeller
  • Patent number: 8072140
    Abstract: A metal-halogenide filling for forming an ionisable filling comprises at least one inert gas, mercury and at least one halogen, the filling including at least the components Rb-halogenide and Mn-halogenide. This filling can in particular be contained in the discharge container of a metal-halogenide lamp.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: December 6, 2011
    Assignee: Osram AG
    Inventor: Hans Eisemann
  • Patent number: 8063566
    Abstract: 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. The illumination apparatus includes a metal halide lamp and an illumination fixture. The metal halide lamp includes an arc tube which has therein a pair of electrodes, an inner tube which houses the arc tube and has a pinch seal part at one end, and an outer tube which houses the inner tube and has a base at one end. The illumination fixture includes a reflector having a concave reflecting surface, a socket, and an attachment. In the inner tube, a diffusing part 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: Grant
    Filed: December 26, 2006
    Date of Patent: November 22, 2011
    Assignee: Panasonic Corporation
    Inventors: Shunsuke Kakisaka, Masanori Higashi, Rie Tonomori
  • Publication number: 20110279031
    Abstract: In various embodiments, a high pressure discharge lamp may include a ceramic discharge vessel which contains two electrodes and a metal halide filling in a discharge volume V, wherein the filling contains a starting gas that is selected individually or in mixture from the group of the noble gases, wherein the filling moreover contains metal halides that are selected individually or in mixture from the group MXn, M being a representative from the group In, Zn, Mg, Mn, Al, Tl, Sn, Sc, Hg and X being a representative from the group I, Br, Cl, wherein moreover the filling contains a stoichiometric excess of the metallic portion M in relation to MXn, wherein the concentration of the metallic portion is in the range from 0.1 to 20 mg/cm3.
    Type: Application
    Filed: February 2, 2010
    Publication date: November 17, 2011
    Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
    Inventor: Klaus Stockwald
  • Publication number: 20110266955
    Abstract: A discharge lamp and a method for forming the lamp, the lamp including a ceramic discharge vessel defining at least part of a cavity containing a metal halide (MH) chemical filling having a power factor of between about 0.75 and 0.85 located within the cavity; and one or more feedthroughs having first and second ends, the first end located in the cavity. The cavity may have an internal length LINT and an internal diameter DINT that are proportional to each other, such that an aspect ratio defined as LINT/DINT is less than or equal to two. The lamp may be started and operated with a probe-start ballast without an internal igniter circuit or without a starting electrode (or internal igniter).
    Type: Application
    Filed: December 15, 2009
    Publication date: November 3, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Ray Gibson, Tom Steere, Junming Tu
  • Publication number: 20110248628
    Abstract: A mercury-free discharge lamp with an electrical power consumption of less than 35 Watts may include a translucent discharge vessel which has a discharge space into which electrodes protrude for generating a gas discharge, wherein metal halides and ignition gas are contained in the discharge space, wherein the metal halides are present in a quantity in the range from 5 milligrams to 15 milligrams per 1 milliliter of discharge space volume in the discharge space.
    Type: Application
    Filed: September 10, 2009
    Publication date: October 13, 2011
    Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
    Inventors: Frank Werner, Matthias Bruchhausen, Grigorios Tsilimis, Florian Bedynek
  • Publication number: 20110181181
    Abstract: A discharge lamp with excellent arc stability and excellent durability in which the use level of thoriated tungsten is restrained has an anode and a cathode in the interior of a discharge vessel, wherein said cathode is made up from a thoriated tungsten part with a tungsten filling ratio of at least 90 vol.-% and a main body part connected to said thoriated tungsten part and consisting of pure tungsten, wherein a ratio ST/S of a side surface area ST of said thoriated tungsten part and a side surface area S of said cathode is in a range of from 0.005 to 0.15, with the proviso that, in case the cathode has a length in the direction of the cathode axis which exceeds twice the maximum diameter of the cathode, a side surface area S is used for calculating the ratio ST/S which corresponds to the side surface area where the distance along the cathode axis from a tip end adjacent to the anode is twice the maximum diameter of the cathode.
    Type: Application
    Filed: January 27, 2011
    Publication date: July 28, 2011
    Applicant: USHIO DENKI KABUSHIKI KAISHA
    Inventors: Akihiro SHIMIZU, Tomoyoshi ARIMOTO, Mitsuru IKEUCHI
  • Publication number: 20110156582
    Abstract: A high pressure gas discharge lamp (10) is described with a discharge vessel (20). Electrodes (24) project into a discharge space (22) surrounded by a discharge vessel wall (30) of quartz material. 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. In order to provide a lamp that can be easily manufactured and is well suited for operation at reduced power, the discharge vessel wall (30) is of externally and internally cylindrical shape. The lamp may be manufactured by providing a cylindrical tube (2) of quartz material, heating the tube (2) at least two distant portions and forming grooves (4) there, inserting two electrodes (24) into the tube and heating and pinching the tube (2) at both ends to seal the discharge space (22).
    Type: Application
    Filed: September 7, 2009
    Publication date: June 30, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Michael Haacke, Ralf Muckel, Wilfried Emunds, Manfred Westemeyer
  • Patent number: 7965043
    Abstract: The invention relates to a discharge vessel of a quartz glass for discharge lamps with a diffusion barrier inner layer of silicon oxide, which as a single layer is applied and/or is generated on the inner surface as well as to a method for generating and/or applying such a diffusion barrier inner layer and to the use of such a discharge vessel.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: June 21, 2011
    Assignee: Auer Lighting GmbH
    Inventors: Thomas Küpper, Margareta Hamel, Christoph Mölle, Dietmar Ehrlichmann, Rainer Kronfoth, Klaus Günther
  • Patent number: 7965042
    Abstract: A metal halide lamp according to the present invention includes: an outer tube 2; an inner tube 3 that is provided in the outer tube 2, has a sealing portion 10 in at least one end portion, and is made of quartz glass; an inner tube 3 provided in the outer tube 2; and an arc tube 4 provided in the inner tube 3, wherein assuming that the outer tube 2 has a maximum outer diameter A (mm), the inner tube 3 has a maximum outer diameter B (mm), and the metal halide lamp 1 consumes P (W) of power, the following relationships are satisfied: 0.06P+15.8?A?25, 0.05P+9.0?B, and 1.14?A/B, where P satisfies 20 W?P?130 W.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: June 21, 2011
    Assignee: Panasonic Corporation
    Inventors: Shunsuke Kakisaka, Masahito Yoshida
  • Publication number: 20110133663
    Abstract: A high-pressure discharge lamp, which has no electrodes and is excited by means of high-frequency electromagnetic waves, may include an ceramic elongated discharge vessel, which has an axis, where the discharge vessel has a filling that forms a plasma, when radio frequency power (RF) is coupled into the filling from the base body, where the filling comprises a gas and at least one metal halide, where a circuit for operation of the lamp is coordinated, which provides RF power, so that the coupled-in RF power vaporizes the metal halide, which leads to light emission, wherein the discharge vessel is specially designed for operation with acoustic modulation control of the plasma flow, wherein the discharge vessel is divided into a central part with at least approximately constant internal diameter and two ends, whose internal diameter reduces towards the end.
    Type: Application
    Filed: July 20, 2009
    Publication date: June 9, 2011
    Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
    Inventor: Klaus Stockwald
  • Publication number: 20110127910
    Abstract: In various embodiments, a metal halide discharge lamp is provided, which may include a ceramic discharge vessel containing a metal halide fill, including a tubular central part and two end sections which are configured asymmetrically, in each of which an electrode system is held, wherein a pointed first end section tapers as seen from the central part, while a blunt second end section either remains constant in its dimensions or widens as seen from the central part, a stopper being fitted at least in the blunt end.
    Type: Application
    Filed: November 23, 2010
    Publication date: June 2, 2011
    Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
    Inventors: Joachim Arndt, Uwe Fidler, Ralph Hauschild
  • Patent number: 7952284
    Abstract: A metal halide lamp with a more stable lamp voltage, comprising a ceramic discharge vessel which encloses a discharge space, in which a first and a second electrode are arranged, which discharge vessel has a central zone extending between the electrodes and being closed at either side by a first and a second end zone, respectively, in which the first end zone surrounds, with little clearance, a current supply conductor connected to the first electrode and extending to the exterior through a seal to the wall of the first end zone, which current supply conductor has a halide-resistant section facing the discharge space and a section remote from the discharge space, wherein the halide-resistant section of the first current supply conductor comprises a wire made of tungsten or of tungsten alloyed with molybdenum.
    Type: Grant
    Filed: January 16, 2006
    Date of Patent: May 31, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Tim Van Eysendyk, Jan Margareta Peeraer
  • Patent number: 7944148
    Abstract: 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: Grant
    Filed: September 30, 2008
    Date of Patent: May 17, 2011
    Assignee: General Electric Company
    Inventors: David John Smith, Timothy John Sommerer, Joseph Darryl Michael
  • Publication number: 20110089828
    Abstract: Provided is a metal halide lamp that can (i) prevent flicker in an illuminated surface of an arc tube, which is caused by violent movement of an electric arc when the lamp is lit while being tilted, (ii) suppress an early reduction in a luminous flux maintenance factor, and (iii) suppress formation of cracks in an enclosure of the arc tube. The lamp comprises (i) an arc tube 3 that (a) is arranged inside an outer tube 2, (b) has at least one selected from the group consisting of Ce and Pr enclosed therein as a light emitting material, and (c) is made of translucent ceramic, and (ii) a sleeve 4 arranged outside the arc tube 3, so as to surround a part of a discharge space 13 in the arc tube 3 extending between a pair of electrodes 12. The relationship 0.7<L/D<3 is satisfied in the lamp, with L denoting the inter-electrode distance [mm] and D denoting a largest inner diameter [mm] of a part of the arc tube 3 surrounding the part of the discharge space 13. The relationship R/r??0.0019P+2.
    Type: Application
    Filed: March 26, 2009
    Publication date: April 21, 2011
    Inventors: Yukiya Kanazawa, Shunsuke Kakisaka
  • Patent number: 7923908
    Abstract: A novel metal halide reflector lamp is described wherein the reflector lamp has a passive optical element to scramble, color mix, and otherwise commingle the light emitted by the metal halide burner. The optical element is placed close to the radiating plasma volume to intercept a large solid angle. Preferably, the optical element substantially intercepts the emitted light within a solid angle that has its vertex at the center of the discharge volume of the burner and is subtended by the open end of the reflector. The optical element can be designed to scatter, reflect or refract the light emanating in this solid angle which otherwise would not impinge on the primary optical control surface of the reflector.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: April 12, 2011
    Assignee: Osram Sylvania Inc.
    Inventor: Walter P. Lapatovich
  • Patent number: 7911144
    Abstract: The invention relates to a metal halide lamp for a vehicle headlamp comprising a cylindrically-shaped discharge vessel (23) having a ceramic wall which encloses a discharge space comprising Xe and ionizable filling, and a cylindrically-shaped outer bulb (21) surrounding the discharge vessel (23). According to the invention a portion (25, 26) of the surface of the outer bulb (21) facing away from the discharge vessel (23) is shaped as a negative lens. Preferably, the portion (25, 26) encompasses a segment of the outer bulb (21) with a segment angle ? in the range between 30???60°. Preferably, the portion (25) forming the negative lens is shaped as a flat surface.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: March 22, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Johannes Petrus Maria Ansems, Josephus Christiaan Maria Hendricx, Herman Muller
  • Publication number: 20110031878
    Abstract: 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: Application
    Filed: April 7, 2009
    Publication date: February 10, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Michael Haacke, Ulrich Hechtfischer
  • Patent number: RE42181
    Abstract: 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 contains a metal halide fill component which includes a mixture of scandium iodide, or other suitable lanthanide, indium iodide and cesium iodide, whereby the lamp assembly emits effective amounts of UV radiation to cure selected chemical compositions. The fill mixture, which contains no sodium component, contributes to improved lamp life and a reduction in passive lamp failure over halide fill mixtures which contain sodium iodide as a fill component.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: March 1, 2011
    Assignee: Ushio America, Inc.
    Inventor: Dale E. Brabham