With Particular Gas Or Vapor Patents (Class 313/637)
  • Patent number: 9281176
    Abstract: Provided is a microwave plasma discharge lamp apparatus which includes a rectangular waveguide having a rectangular shape one end of which is closed and the other end is open and receiving a microwave through an opening to put out linearly polarized microwaves; a discharge lamp; a resonator cavity, formed in a cylindrical shape, one end of which is open, which is disposed to surround the discharge lamp, and which is made of a conductive mesh, thereby allowing the passage of the light from the discharge lamp; and a phase shifter, which has a cross-shaped waveguide opened in a propagation direction of the linearly polarized microwaves, is disposed between the other end of the rectangular waveguide and one end of the resonator cavity, and receives the linearly polarized microwaves from the rectangular waveguide to generate elliptically polarized microwaves in the cylindrical resonator cavity. The elliptically polarized microwaves discharge the discharge lamp.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: March 8, 2016
    Assignee: TAEWON LIGHTING CO., LTD.
    Inventors: Jin-Joong Kim, Kyoung-Shin Kim
  • Patent number: 9245733
    Abstract: A plasma lighting system includes a magnetron configured to generate microwaves, and a bulb filled with a main dose and an additive dose. The main dose and the additive dose generate light under the influence of microwaves and have maximum intensities of respective intrinsic wavelengths at different wavelengths. A motor is configured to rotate the bulb. A controller is connected to the motor. The controller adjusts the Revolutions Per Minute (RPM) of the bulb to thereby adjust a color temperature of light emitted from the bulb.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: January 26, 2016
    Assignee: LG Electronics Inc.
    Inventors: Donghun Kim, Hyunjung Kim, Junsung Kim
  • Patent number: 9240312
    Abstract: A discharge lamp includes a housing including a dielectric portion having a light transmission area formed of a dielectric material and transmitting light, and a main body portion forming a discharge-gas-filled space together with the dielectric portion, the discharge-gas-filled space being filled with a discharge gas; an electron emission source disposed in the discharge-gas-filled space to face the light transmission area; a discharge path limiting member separating the electron emission source and the light transmission area, in the discharge-gas-filled space, and including an electron passage hole that transmits electrons emitted from the electron emission source; and an external electrode disposed at an outer side of the housing to face the electron emission source across the dielectric portion, and including an opening that passes the light transmitted through the light transmission area.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: January 19, 2016
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Masaki Ito, Yoshinobu Ito
  • Patent number: 8994288
    Abstract: A pulse-excited mercury-free lamp system, and method of sustaining the emission of light emission from such a lamp, is provided. The system includes a light-transmissive envelope having an inner surface and a phosphor layer coated thereon. A discharge-sustaining gaseous mixture of a noble gas, at a low pressure, and a metal halide, is retained inside the light-transmissive envelope. An electrical system provides a plurality of pulses to the discharge-sustaining gaseous mixture, resulting in a discharge, which causes the lamp system to emit light. The emission of light is maintained by turning the discharge on during a pulse width of each pulse in the plurality of pulses and by turning the discharge off during a remainder of each period in the plurality of pulses. Particularly in systems where the metal halide is indium-based, this maintains an efficient emission of light without the use of mercury.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: March 31, 2015
    Assignee: OSRAM SYLVANIA Inc.
    Inventor: Philip E. Moskowitz
  • Publication number: 20140320003
    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: Application
    Filed: July 5, 2014
    Publication date: October 30, 2014
    Applicant: NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY
    Inventors: JOHN J. CURRY, WALTER P. LAPATOVICH, EDGAR G ESTUPINAN
  • 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
  • Patent number: 8736167
    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: Grant
    Filed: November 22, 2011
    Date of Patent: May 27, 2014
    Assignee: Iwasaki Electric Co., Ltd.
    Inventors: Yoshihisa Shibata, Kenji Okayasu, Shinji Tazawa
  • Patent number: 8736168
    Abstract: A ceramic metal halide lamp is provided in which color rendering properties, especially a special color rendering index R9, are improved without causing lamp efficiency to be lowered substantially. In one aspect, a ceramic metal halide lamp includes a luminous tube in the interior of an outer bulb. The luminous tube is made from translucent ceramics and includes a light-emitting portion into which metal halides, mercury and a starting gas are sealed and capillaries with a pair of electrode assemblies extended thereto disposed at both ends of the light-emitting portion. The light-emitting portion has sealed therein at least thulium iodide (TmI3), thallium iodide (TlI), sodium iodide (NaI) and calcium iodide (CaI2). The light-emitting portion has further sealed therein silver iodide (AgI). A quantity of the AgI falls within a range of 2?(AgI/CaI2)[molar ratio]?5 and within a range of 0<(AgI/TlI)[molar ratio]?10.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: May 27, 2014
    Assignee: Iwasaki Electric Co., Ltd.
    Inventor: Yasushi Sasai
  • Patent number: 8729801
    Abstract: The invention relates to a metal halogen lamp comprising an elongated arc tube enclosed in a transparent casing, wherein the arc tube is made up of a hollow glass body comprising two end portions and a middle portion, and electrode is arranged on the respective end portion, which electrodes, each having an electrode end, upon connection to a power source and during operation of the metal halogen lamp, generate an arc between them; and the glass body encloses halogens (h) and metal atoms (m) and has a wall thickness which is thicker on the end portions than on the middle portion. The thicker end portions each have a length (L1) of at least one-third of the total length (L) of the arc tube.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: May 20, 2014
    Assignee: Auralight International AB
    Inventor: Martin Fransson
  • 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
  • Patent number: 8698115
    Abstract: A light source device repeatedly implements a first state and a second state in alternate shifts. The energy of a standing wave generated in a cavity resonator is absorbed by a rare gas or the like existing in a hollow member. This implements the first state in which plasma is generated and the electron temperature thereof is increased, and then the extreme ultraviolet light emitted from the plasma is emitted out of the cavity resonator through a window. The supply of the electromagnetic wave to the cavity resonator is interrupted. This implements the second state in which the plasma is extinguished.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: April 15, 2014
    Assignee: A School Corporation Kansai University
    Inventors: Masashi Onishi, Waheed Hugrass
  • 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: 8624493
    Abstract: An integrated gas discharge lamp (5) with ignition electronics integrated into the base, comprising an ignition transformer (TIP), an ignition capacitor (CIP), and a controlled switching element (SIP), wherein the integrated ignition electronics are configured to generate an asymmetrical ignition pulse, and wherein the voltage ratio between the first lamp electrode near the base and the second lamp electrode distant from the base ranges from 22:1 to 5:4.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: January 7, 2014
    Assignee: OSRAM Gesellschaft mit beschrankter Haftung
    Inventors: Knut Asmussen, Bernhard Siessegger
  • 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: 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: 8482202
    Abstract: The present disclosure relates to a discharge lamp able to be operated at less than full rated power without suffering undesirable color shift, loss of lumen maintenance or loss of lamp efficacy. It finds particular application in connection with ceramic metal halide lamps having no thallium iodide in the dose thereof.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: July 9, 2013
    Assignee: General Electric Company
    Inventor: Lei Deng
  • Patent number: 8449343
    Abstract: A discharge lamp includes an arc tube and a boron oxide film formed on an inner surface of the arc tube.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: May 28, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Yoshihide Nishiyama, Noboru Sakurai
  • Patent number: 8450932
    Abstract: A high pressure sodium lamp includes a lamp base, a light admissible housing and a sodium vapor illumination arrangement, which includes a light core extended from the lamp base into the light admissible housing; a supporting frame, and an arc tube. The supporting frame longitudinally extends in the light admissible housing, and has an upper end portion supported by an upper portion of the light admissible housing, and a lower end portion supported by the light core. The arc tube has a first and a second electrode formed at two ends thereof and electrically connected with the upper end portion of the supporting frame and the light core respectively, wherein sodium vapor in the arc tube is electrically excited to discharge light having an intensity equivalent to that generated by more than 1000 W power.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: May 28, 2013
    Inventors: Fuqing Qian, Song Qian
  • Patent number: 8436536
    Abstract: A mercury-free vehicle discharge lamp is described as including a discharge space with electrodes, wherein a spherical length b, which is a length in a tube axial direction of the light emitting part is 7.5 mm to 8.5 mm and a thickness volume V of the light emitting part is 50 mm3 to 100 mm3, and wherein the following formula is satisfied: ?20?(a?35)×5.5+(x?13.5)×10 +(1.85?t)×100+(2.5?d)×100?20, a: power W supplied in a stable lighting time, x: pressure [atm] of rare gas sealed in the discharge space ranging 10˜17 atm, t: thickness [mm] of a part where a wall with maximum thickness and ranging 1.30˜1.85 mm, and d: inner diameter [mm] of a part where the wall with maximum thickness.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: May 7, 2013
    Assignee: Harison Toshiba Lighting Corporation
    Inventors: Makoto Deguchi, Osamu Shirakawa, Masahiro Doi, Kosuke Ueda, Takuya Abe
  • 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: 8427052
    Abstract: A metal halide lamp includes a ceramic discharge vessel that encloses a discharge space which accommodates two electrodes and contains a salt filling. The salt filling includes sodium iodide, thallium iodide, calcium iodide, cerium iodide, and barium iodide as a colorpoint stabilizing additive. The salt filling further includes calcium iodide and thallium iodide, and substantially no sodium iodide. The salt filling further comprises mercury iodide.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: April 23, 2013
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Petrus Johannes Mathijs Van Der Burgt, Vincent Fischer, Timo Borlet
  • 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
  • Patent number: 8368306
    Abstract: The present disclosure relates to a short arc metal halide lamp without outer jacket, whose arc tube has a specified aspect ratio and chemical filling, characterized in that it delivers a low color temperature and very high color rendering index, which are maintained during dimming.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: February 5, 2013
    Assignee: Flowil International Lighting (Holding) BV
    Inventors: James Hooker, Lode Derhaeg
  • 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
  • Patent number: 8339044
    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: Grant
    Filed: December 28, 2010
    Date of Patent: December 25, 2012
    Assignee: General Electric Company
    Inventors: Tamás Panyik, István Csányi, József Gábeli, István Maros
  • 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: 8310156
    Abstract: A high-pressure discharge lamp may include a discharge vessel which is sealed in a gas-tight manner and in which electrodes and an ionizable fill for generating a gas discharge are enclosed, the ionizable fill being in the form of a mercury-free fill which includes xenon and halides of the metals sodium, scandium, zinc and indium, wherein the weight ratio of the halides of zinc and indium is in the range of from 20 to 100, and wherein the coldfilling pressure of xenon is in the range of from 1.3 megapascal to 1.8 megapascal.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: November 13, 2012
    Assignee: Osram AG
    Inventor: Dirk Grundmann
  • Patent number: 8258687
    Abstract: The present invention relates to a coaxial waveguide electrodeless lamp. The lamp is formed in analogy to coaxial waveguide cables, with an outer conductor, a central conductor, and a gas-fill vessel made of dielectric material between the outer conductor and the inner conductor. The gas-fill vessel is substantially hollow and filled with substances that form a plasma and emit light when RF radiation carried by the central conductor and ground conductor interacts with the substances in the gas-fill vessel. The present invention also relates to a leaky waveguide electrodeless lamp. The lamp is formed in analogy to leaky waveguides, with a conductor, a ground conductor, and a gas-fill vessel made of dielectric material butted against the conductor and encompassed by the ground conductor. The leaky waveguide electrodeless lamp emits light from a plasma similar to light-emission action of the coaxial waveguide electrodeless lamp described above.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: September 4, 2012
    Assignee: Topanga Technologies, Inc.
    Inventors: Frederick M. Espiau, Mehran Matloubian, Alexandre Dupuy
  • Patent number: 8242678
    Abstract: An automotive discharge lamp, having an inner tube including a light emitting unit having a first space therein and seal portions formed on the light emitting unit, a discharge medium containing a first gas enclosed in the first space, a metal foil sealed in the seal portions, electrodes with one end connected to the metal foil and other end extended into the first space, and an outer tube connected to the inner tube to form a second space between the outer tube and the inner tube, wherein the second space has a second gas enclosed therein and the oxygen concentration in the second space is 1.0 volume % or less.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: August 14, 2012
    Assignee: Harison Toshiba Lighting Corp.
    Inventors: Ryo Itou, Makoto Deguchi, Syuhei Abe, Hisashi Yoshida, Masahiro Doi
  • Patent number: 8240861
    Abstract: An illumination device for a microscope, in particular for an operation microscope, has a light source with an improved lifetime. The light source is in the form of a gas discharge lamp having a microwave generator, a microwave waveguide and an electrodeless bulb. The bulb contains a luminescent material and is coupled to the microwave waveguide so that microwaves can stimulate the luminescent material to emit light.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: August 14, 2012
    Assignee: Leica Instruments (Singapore) Pte. Ltd.
    Inventor: Ulrich Sander
  • Publication number: 20120187871
    Abstract: A low-pressure discharge lamp includes a discharge vessel, a gas discharge medium including nitrogen contained in the discharge vessel at low pressure, wherein the discharge lamp is configured such that light may be generated by a high-current discharge process of the gas discharge medium.
    Type: Application
    Filed: September 17, 2009
    Publication date: July 26, 2012
    Applicant: OSRAM AG
    Inventors: Ursel Fantz, Roland Friedl, Holger Hein, Achim Hilscher, Patrick Starke
  • Patent number: 8227991
    Abstract: The invention provides a metal halide lamp with a ceramic discharge vessel and two electrodes. The discharge vessel encloses a discharge volume containing an ionisable salt filling. The ionisable salt filling comprises 3.5-82 mol % sodium iodide, 0.5-8.5 mol % thallium iodide, 14-92 mol % calcium iodide, 0.5-5.5 mol % cerium iodide and 0.5-3.5 mol % indium iodide. The mol percentages are relative to the total amount of ionisable salt filling. The lamp is dimmable, at least in a range of 50-100% of nominal intensity, while maintaining its light-technical properties and while not substantially deviating from the black body locus. Further, the lamp has a relatively high efficacy. Further, the lamp can be operated horizontally and vertically, i.e. the lamp is suitable for universal burning.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: July 24, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Oscar Gerard Stappers, Willem Van Erk, Wouter Edgard Koen Broeckx
  • Patent number: 8227992
    Abstract: A high-pressure discharge lamp may include a discharge vessel, which contains: electrodes, at least one noble gas as a start gas, at least one element selected from the group consisting of Al, In, Mg, Tl, Hg, and Zn for arc transfer and discharge vessel wall heating, and at least one rare earth halide for the generation of radiation, which is configured such that the generated light is dominated by molecular radiation, wherein at least one member of a first group of rare earth halides is used together with at least one member of a second group of rare earth halides, the first group having the property that the color distance decreases with a power increase when the power of the lamp is increased in a predetermined power interval, and the second group having the property that the color distance increases with a power increase when the power of the lamp is increased in this predetermined power interval.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: July 24, 2012
    Assignee: Osram AG
    Inventors: Marko Kaening, Bernhard Schalk, Steffen Franke, Ralf-Peter Methling
  • Patent number: 8222819
    Abstract: An opaque zone in the polycrystalline (PCA) discharge vessel of a high intensity discharge lamp may be made by creating residual pores in predetermined regions of the final-sintered discharge vessel. The control over the placement of the opaque zone is achieved by forming a carbonaceous residue in a specific region of the discharge vessel prior to final sintering. During sintering, the carbonaceous material causes residual porosity in the sintered PCA. The higher emissivity of the opaque PCA provides localized cooling in order to provide more control over the condensate behavior in the discharge vessel.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: July 17, 2012
    Assignee: Osram Sylvania Inc.
    Inventors: George C. Wei, Christopher A. Tarry, Roland Huettinger
  • Publication number: 20120176028
    Abstract: A plasma lamp apparatus. The apparatus has an arc tube structure having an inner region and an outer region in one or more embodiments. The arc tube structure has a first end comprising an associated first end diameter and a second end comprising a second end diameter according to a specific embodiment. The apparatus also has a center region provided between the first end and the second end in one or more embodiments. The center region has a center diameter, which is less than a first end diameter and/or a second end diameter.
    Type: Application
    Filed: January 11, 2011
    Publication date: July 12, 2012
    Applicant: Topanga Technologies, Inc.
    Inventor: Douglas A. Doughty
  • Patent number: 8203271
    Abstract: A metal halide lamp (MHL) includes: a light-transmitting hermetic vessel made of quartz glass, including: a surrounding portion having a discharge space formed therein; and at least one sealing portion joined to the surrounding portion; electrodes sealed within the discharge space of the light-transmitting hermetic vessel; a discharge medium filled within the discharge space of the light-transmitting hermetic vessel; and at least one sealed metal foil connected to proximal ends of the electrodes and hermetically embedded within the sealing portion, the sealed metal foil being formed with height-differentiating portions comprised of laser traces on at least one of surfaces of the metal foil.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: June 19, 2012
    Assignee: Harison Toshiba Lighting Corporation
    Inventors: Osamu Shirakawa, Hidehiko Noguchi
  • Patent number: 8198792
    Abstract: The electrodeless discharge lamp comprises: a bulb provided with a substantially-spherical spherical portion and a neck portion extending from the spherical portion; a base connected to the neck portion; a protrusion formed at an apex of the spherical portion; and an induction coil that causes light emission by discharge developed in the bulb. The electrodeless discharge lamp satisfies the formula below: t?6?10959×X+25?t+6??(Formula) where X=(B×S)/(L×A), B=W/(4×?×(D/20)2), S=?×(d/20)2, L=?×(d/10), W (W) denotes the lamp input power, D (mm) denotes the diameter of the spherical portion, d (mm) denotes the diameter of a portion at a joint surface between the neck portion and the base, and A (mm) denotes the distance from a largest-diameter portion of the spherical portion to the joint surface, and t is the temperature (° C.) at the tip of the protrusion during downward stable lighting of the electrodeless discharge lamp.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: June 12, 2012
    Assignee: Panasonic Corporation
    Inventors: Yoshinori Tsuzuki, Kazuhiko Sakai, Kohji Hiramatsu, Atsunori Okada
  • 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: 20120126694
    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 in the discharge chamber (2) is free of zinc iodide, and the fill gas includes a halide composition comprising sodium iodide and scandium iodide to a combined proportion of at least 30 wt % and at most 95 wt %, and thulium iodide, to a proportion of at least 5 wt % and at most 70 wt %.
    Type: Application
    Filed: August 6, 2010
    Publication date: May 24, 2012
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Michael Haacke, Klaus Schoeller
  • 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
  • Publication number: 20120098423
    Abstract: The invention describes a mercury-free high-intensity gas-discharge lamp (1) comprising a discharge vessel (5) enclosing a filling in a discharge chamber (2) and comprising a pair of electrodes (3, 3?, 4, 4?) extending into the discharge chamber (2), for which lamp (1) the electrodes (3, 3?, 4, 4?) are free of thorium, and the filling includes a halide composition comprising at least 6 wt % thorium iodide.
    Type: Application
    Filed: May 4, 2010
    Publication date: April 26, 2012
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Michael Haacke, Ulrich Hechtfischer, Hermann Giese
  • Patent number: 8148901
    Abstract: A light source apparatus, comprises a lamp housing, a xenon lamp provided in the lamp housing, a reflection mirror which reflects light emitted from the xenon lamp, and first and second power feeders which supply electric power to the xenon lamp, wherein a direction of the first power feeder connected to one end of the xenon lamp and a direction of the second power feeder connected to the other end thereof are approximately in point symmetry with respect to a center of lamp axis connecting electrodes which face each other.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: April 3, 2012
    Assignee: Ushio Denki Kabushiki Kaisha
    Inventors: Shunichi Morimoto, Takehiko Iguchi
  • Patent number: 8125152
    Abstract: A liquid crystal display and a light source apparatus capable of improving color reproduction compared to related arts without declining intensity. A light source apparatus includes: a cold cathode fluorescent tube including a B phosphor for blue and a G phosphor for green; and a light emitting diode for red, wherein the G phosphor emits a single-spectrum light with a peak wavelength of 510 to 530 nm, and the light emitting diode emits a single-spectrum light with a peak wavelength of 620 to 650 nm.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: February 28, 2012
    Assignee: Sony Corporation
    Inventors: Masaru Fujiwara, Tsutomu Niimura, Makoto Natori
  • Patent number: 8125153
    Abstract: A plasma lamp including a waveguide body comprising at least one dielectric material. The body is coupled to a microwave power source which causes the body to resonate in at least one resonant mode. A lamp chamber integrated with the body contains a bulb with a fill forming a light-emitting plasma when the chamber receives power from the resonating body. A bulb either is self-enclosed or an envelope sealed by a window or lens covering the chamber aperture. Embodiments disclosed include lamps having a drive probe and a feedback probe, and lamps having a drive probe, feedback probe and start probe, which minimize power reflected from the body back to the source.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: February 28, 2012
    Assignee: Luxim Corporation
    Inventors: Frederick M. Espiau, Yian Chang
  • Publication number: 20120038270
    Abstract: A pulsable light source for a spectroscopy instrument is provided, the light source including a xenon flash lamp having an anode and a cathode within a sealed envelope of pressurized xenon gas, the anode and the cathode being spaced so that an arc can be struck between the anode and the cathode without the use of a trigger electrode.
    Type: Application
    Filed: July 18, 2011
    Publication date: February 16, 2012
    Applicant: Agilent Technologies Australia (M) Pty Ltd.
    Inventor: Michael R. HAMMER
  • Patent number: 8110970
    Abstract: A light-emitting device utilizing gaseous sulfur compounds is provided. This device includes a first substrate with an energy transmission coil disposed thereover, a dielectric barrier layer embedding underneath the energy transmission coil, a sealant wall circling around the dielectric barrier layer, a second substrate disposed against the first substrate and supported by the sealant wall, and a high-frequency oscillating power supply connected to the energy transmission coil. Normally the second substrate is a transparent substrate. Between the first and second substrates thereby defines an inner chamber, wherein a gaseous reactant comprising an inert gas and a sulfur-containing gas is filled. While powering up, the energy transmission coil induces an electromagnetic field within the inner chamber between the two substrates as causing decomposing/regenerating process cycles of sulfur molecules to lighting up the light-emitting device.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: February 7, 2012
    Assignee: Industrial Technology Research Institute
    Inventor: Hung-Yuan Hsieh
  • Patent number: 8102107
    Abstract: A light-emitting device having an excited sulfur medium by inductively-coupled electrons is provided. This device includes a substrate, an energy transmission coil disposed over the substrate, a transparent discharge cavity disposed over the energy transmission coil, having a substantially planar top and bottom surface, and a high-frequency oscillating power supply coupled to the energy transmission coil. While power up, the energy transmission coil induces an electromagnetic field within the transparent discharge cavity of the light-emitting device. In one embodiment, the transparent discharge cavity includes a sulfur-containing medium disposed within the transparent discharge cavity, and a buffer gas or a plurality of buffer gasses filling inner space of the transparent discharge cavity.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: January 24, 2012
    Assignee: Industrial Technology Research Institute
    Inventor: Hung-Yuan Hsieh