Shield Supported By Or Forming Part Of Envelope Stem Patents (Class 313/242)
  • Patent number: 10006620
    Abstract: A lighting device may be provided that includes: a housing having a top opening and a bottom opening; an optical plate disposed in the top opening; heat sink disposed in the bottom opening; a driving unit which is received in the housing, disposed between the optical plate and the heat sink and receives external electric power; and light source which is received in the housing, disposed between the optical plate and the driving unit, spatially separated from the driving unit and is electrically connected to the driving unit.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: June 26, 2018
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Jae Jin Kim, Young Joo Ahn, Jae O Kwak, Ki Woong Kim
  • Patent number: 8841829
    Abstract: A lamp holder (61) for a gas discharge lamp (5), having at least two receptacles (B1, B2) for at least two pins (P1, P2) of a gas discharge lamp (5), wherein at least one shielding conductor (S1a, S1b, S2a, S2b) is disposed in the vicinity of each receptacle (B1, B2).
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: September 23, 2014
    Assignee: OSRAM GmbH
    Inventors: Bernd Koch, Joachim M├╝hlschlegel
  • Patent number: 7965038
    Abstract: Compact fluorescent lamp comprising a fluorescent lamp body (3), a cathode space (9) comprising a screened space (11) around an electrode (5) arranged inside the compact fluorescent lamp (1), and a power supply device (19) so arranged as to provide an electrical connection between the electrode (5) and a contact device (21) positioned next to the contact end (13) of the compact fluorescent lamp. The screened space (11) is formed by the electrode (5) enclosing the internal wall (7) of the fluorescent lamp body (3) and by a neighboring electrode (5) and beyond it a disc-shaped cathode screen (15) in a direction away from the contact end (13) containing a central opening (17).
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: June 21, 2011
    Assignee: Auralight International AB
    Inventors: Folke Axelsson, Mikael Severinsson
  • Publication number: 20090058251
    Abstract: In an electrodeless lamp, at least one core assembly is coupled to a tubular lamp envelope. The core assembly includes a lamp envelope protector disposed over an outer surface of the lamp envelope, and a core member surrounding the lamp envelope at a core mounting location such that lamp envelope protector is disposed between the core member and the lamp envelope. The core assembly further includes a coil bobbin coupled to the core member, and a coil wounded around the coil bobbin.
    Type: Application
    Filed: September 4, 2007
    Publication date: March 5, 2009
    Inventor: Byung Il Ham
  • Publication number: 20070194683
    Abstract: A high-frequency discharge lamp includes a coaxial waveguide including an internal conductor and a pipe-shaped external conductor surrounding said internal conductor, and a discharge tube including a ceramic or glass tube having an approximately ellipse spherical bulged part formed in a middle of a longitudinal direction, and both ends pinched and sealed; a conductor assembly sealed and attached to an end of the ceramic or glass tube; and an auxiliary electrode for starting disposed near the approximately ellipse spherical bulged part. A rare gas for starting with 1 atmospheric pressure or more at room temperature together with a light emission substance is enclosed inside of the approximately ellipse spherical bulged part. The discharge tube is inserted conductor assembly end first and held in a top opening of the coaxial waveguide. A high-voltage pulse generated by a high-voltage pulse generator is applied to the auxiliary electrode through a pulse transmission line.
    Type: Application
    Filed: February 13, 2007
    Publication date: August 23, 2007
    Inventors: Takuya Serita, Masaya Shido
  • Patent number: 7057334
    Abstract: A mount (10) for a metal halide arc discharge lamp has a flare (20) including a barrel portion and a frame (32) comprises a clip (40) attached to the barrel portion (30). First and second side rods (50, 60) spaced 180┬░ apart have distal ends (70) and proximal ends (80), with the distal ends being attached to the clip. First and second spaced apart straps (90, 100) connect the side rods intermediate the proximal ends and distal ends. An arc tube (110) is fixed between the first and second straps. The proximal ends diverge outwardly and engage the inner surface of a dome (14) to position one end of the mount. The barrel portion includes two sealed lead-in wires (120, 130). The arc tube includes an electrode (140, 150) in each end (140a, 150a). No electrical connection is made to the frame whereby the frame is electrically isolated.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: June 6, 2006
    Assignee: Osram Sylvania Inc.
    Inventors: Edward M. Callahan, Jr., Ebon L. McCullough, Glen P. Williamson
  • Patent number: 6774559
    Abstract: A metal vapor discharge lamp including an outer tube having a closed portion at a first end and a base at a second end; a discharge tube inside of which an electrode is provided, located in the outer tube; and a sleeve enveloping the discharge tube and located in the outer tube, wherein the sleeve includes an open portion on the closed portion side of the outer tube; the closed portion side of the outer tube is provided with a support for supporting an end of the closed portion side of the sleeve; the support comprises a column portion having a narrow plate shape or a narrow stick shape separated from the open portion of the closed portion side of the sleeve, and a sleeve holding portion provided at an end of the column portion and is in contact with the sleeve; and the support is connected to a feeding body connected to the electrode and led from the discharge tube toward the side of the closed portion, and the support also is connected to an electric power supply wire extending toward the side of the base.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: August 10, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shunsuke Kakisaka, Yoshiharu Nishiura
  • Patent number: 6756723
    Abstract: A fluorescent lamp having a stem provided with first and second lead wires for energization of an electrode and an electrically-insulating member provided therein with a first hole and a second hole larger in cross-sectional area than said second lead wire. The first and second lead wires are inserted in the first and second holes of the electrically-insulating member, respectively, and an outer diameter of a glass envelope of the fluorescent lamp is not smaller than 13 mm and not larger than 29 mm.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: June 29, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Mamoru Fukushima, Yasuo Kobayashi, Soichiro Ogawa
  • Patent number: 6614146
    Abstract: A mount for a fluorescent lamp has a glass base, a longitudinal electrode coil mounted upon lead-in wires extending from the base, and a shield mounted upon the base. The shield comprises a pair of spaced apart shield plates, one on either side of the electrode coil and spaced therefrom.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: September 2, 2003
    Assignee: Osram Sylvania Inc.
    Inventors: Louise Cleary, Joseph V. Lima
  • Patent number: 6342763
    Abstract: A high frequency operation fluorescent lamp which can reduce a possibility of over-heat damage of a flare stem at the end of its life. In the lamp, a pair of intermediate lead wires are passed through the flare stem at each end of a light emitting envelope, and an insulator is provided to cover a top of the flare stem.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: January 29, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Mamoru Fukushima, Yasuo Kobayashi, Soichiro Ogawa
  • Patent number: 5763996
    Abstract: A cathode ray tube is provided. The cathode ray tube according to the present invention includes a panel having a fluorescent film formed on the inner surface thereof, a shadow mask frame assembly disposed inside the panel, a funnel to which the panel is sealed and having an electron gun installed in a neck portion thereof and a deflection yoke installed around a cone portion thereof, and a magnetic field shielding portion which is installed along the wall of the funnel and includes a metal plate for blocking the influences of terrestrial magnetic fields. In the cathode ray tube according to the present invention, it is possible to block the influences of terrestrial magnetic fields with a magnetic field shielding portion having a simple structure.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: June 9, 1998
    Assignee: Samsung Display Devices Co., Ltd.
    Inventor: Jae-woo Kim
  • Patent number: 5757118
    Abstract: In an X-ray image intensifier tube apparatus inc-luding a cylindrical magnetic shield placed to surround the outer periphery of an X-ray image intensifier tube, a ferromagnetic thin plate is placed in front of a convex input window of a vacuum envelope and a correcting magnetic coil is placed inside the cylindrical magnetic shield to surround the input window. This structure allows an output image which is substantially free of distortion to be obtained.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: May 26, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hiroshi Kubo
  • Patent number: 5686795
    Abstract: A low-pressure mercury vapor discharge lamp (10) includes a tubularly-shaped envelope (12) sealed at each end with a stem assembly (14). A fluorescent coating (26) is disposed on the interior surface of the envelope (12) and an electric discharge sustaining fill gas is provided within a hollow interior (24) of the envelope (12). Each stem assembly (14) includes a glass base portion (30) which seals the end of the envelope (12), an electrode (16), and a tubularly-shaped, light-transmissive, glass shield (22). The electrode (16) is disposed within the envelope (12) such that an electric discharge occurs between the electrodes (16) upon operation of the lamp (10). The glass shield (22) extends past the electrode (16) to partially surround the electrode (16) and shield the interior surface of the envelope (12) from material ejected from the electrode (16). The glass shield (22) allows the electric discharge to unaffectedly pass through an open end (42).
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: November 11, 1997
    Assignee: General Electric Company
    Inventors: George E. Sakoske, Johnson M. Kachidza, Richard C. Nagle
  • Patent number: 5646487
    Abstract: The present invention is to provide a gas discharge tube which is properly lighted to improve the reproducibility of a satisfactory light emission state. The gas discharge tube includes an envelop for accommodating a hot cathode for emitting thermoelectrons, an anode for receiving the thermoelectrons, a focusing electrode having a focusing opening for converging paths of the thermoelectrons, and a discharge shielding member supporting the focusing electrode and the anode, the discharge shielding member further supporting a cathode box for surrounding the hot cathode while being electrically insulated from the focusing electrode. Since a lighting device for the gas discharge tube sets the focusing electrode to a zero or negative potential while an electric field is generated between the hot cathode and the anode, the lighting device will be certainly turned on.
    Type: Grant
    Filed: July 13, 1995
    Date of Patent: July 8, 1997
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Tomoyuki Ikedo, Yoshinobu Ito, Ryotaro Matui
  • Patent number: 5359255
    Abstract: A discharge tube for emitting light of the present invention includes an inner bulb including a hollow portion for defining therein an arc discharge chamber which encloses therein gas for emitting light, the inner bulb further including a pair of electrodes and a pair of metal members each of which is connected to a corresponding one of the pair of electrodes, the pair of electrodes being projected in the arc discharge chamber from the inner bulb and the pair of metal members being projected outwardly of the inner bulb, the hollow portion having an outer diameter of a first value and an outer tube for sealingly enclosing therein the inner bulb, the outer tube including a small-diameter portion having an outer diameter of a second value which is equal to or smaller than the first value, wherein the inner bulb is held in the interior of the outer tube, with a gap being formed between an outer surface of the inner bulb and an inner surface of the outer tube, in such a manner that the outer tube supports the meta
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: October 25, 1994
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Koji Kawai, Shigeki Ishihara, Naoki Masuda
  • Patent number: 5057742
    Abstract: A discharge tube has a sealed envelope filled with a gas; an anode, cathode and shielding electrode built in the sealed envelope; and electrode holding pins. At least eight electrode holding pins penetrate a button stem so as to be arranged at predetermined intervals on a circle coaxial with the button stem, and, of at least eight electrode holding pins, at least three hold the cathode, at least three hold the shielding electrode, and at least two hold the anode.
    Type: Grant
    Filed: February 21, 1990
    Date of Patent: October 15, 1991
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Koji Kawai, Yuji Shimazu, Koji Takeuchi
  • Patent number: 4876483
    Abstract: An arc discharge lamp resistant to surface path arcing may be formed by press sealing a dielectric barrier between the electrode roots. By properly manipulating the press seal, a barrier of the dielectric envelope material may be positioned between the electrode roots. The barrier lengthens the discharge path between the electrode roots, and thereby resists surface arc discharge. The lamp seal is then protected from surface discharge heating, and light generation properly occurs between the electrode tips.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: October 24, 1989
    Assignee: GTE Products Corporation
    Inventor: David A. Cox
  • Patent number: 4748380
    Abstract: A fluorescent lamp assembly having an electronic ballast circuit. A ballast circuit transformer is mounted on a metallic plate having a recess complementary to the transformer, and the metallic plate suppresses conducted RFI. A lamp cover is attached to the metallic plate and heat from the ballast circuit transformer is dissipated by the metallic plate and lamp cover.
    Type: Grant
    Filed: September 27, 1983
    Date of Patent: May 31, 1988
    Assignee: North American Philips Corporation
    Inventors: Wallace T. MacDonald, Frank M. Latassa
  • Patent number: 4739222
    Abstract: A compact fluorescent lamp with a screw base having a lamp with an inner tube, an outer case which is provided at one end of the lamp and includes an operating circuit section therein and has a screw base at one end of the outer case, and a molding compound having excellent insulation and good conduction of heat which is pressed and interposed into the gap between the operating circuit section and the outer case in order to transfer the heat generated in the operating circuit section to the outer case.
    Type: Grant
    Filed: May 5, 1986
    Date of Patent: April 19, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Ikuya Nomoto, Ichiro Torii, Kenji Kawabata
  • Patent number: 4467241
    Abstract: A glass funnel for a cathode ray tube is formed by centrifically casting it in a rotating mold. Integrally formed lugs are formed on the interior wall of the funnel. The lugs vary in geometry and are utilized to position and attach a magnetic shield to the funnel. The funnel and its attached magnetic shield forms a subassembly that is independent of the remainder of the cathode ray tube components.A method is set forth for fabricating the funnel and the attached lugs by centrifugally spinning molten glass within a mold.
    Type: Grant
    Filed: January 20, 1982
    Date of Patent: August 21, 1984
    Assignee: Owens-Illinois, Inc.
    Inventor: William A. Hines
  • Patent number: 4298821
    Abstract: The invention provides a television camera tube having between the gun thereof and its target a baffle member formed as a wall integral with the tube and extending inwardly and towards the gun to provide a particle receiving cavity extending around the path of the beam of the gun for retaining loose particles originating from the gun and which would otherwise land upon the target of the tube when this is operated in a "face-down" position.
    Type: Grant
    Filed: September 12, 1979
    Date of Patent: November 3, 1981
    Assignee: English Electric Valve Company
    Inventor: Eric D. Hendry
  • Patent number: 4254363
    Abstract: An electrodeless discharge lamp having a sealed elongated toroidal envelope containing an ionizable medium with means for inducing ionization of the medium including a radio frequency energy supply coil formed by coating a transparent conductive material on the envelope. The coil is mounted to reduce the stray radio frequency field and the torroidal envelope is formed to allow for convection cooling of the lamp.
    Type: Grant
    Filed: December 22, 1978
    Date of Patent: March 3, 1981
    Assignee: Duro-Test Corporation
    Inventor: Peter Walsh
  • Patent number: 4220890
    Abstract: An image-forming device, comprising an image intensifier tube, includes a magnetic shielding grid comprising a ferromagnetic material, which is arranged near the entrance screen of the image intensifier tube for the purpose of shielding against disturbing magnetic fields. Due to the use of partly radiation absorbing material and partly ferromagnetic material this shielding grid can replace, a stray radiation grid already present in the device, or can be added as a grid with radiation transmitting material and ferromagnetic material without the image formation being disturbed in any way.
    Type: Grant
    Filed: March 3, 1978
    Date of Patent: September 2, 1980
    Assignee: U.S. Philips Corporation
    Inventor: Antonius A. G. Beekmans
  • Patent number: 4205250
    Abstract: In an electronic tube comprising a cup shaped first electrode, a cup shaped insulator bonded to the first electrode through a first joint and a second central electrode secured to the insulator through a second joint, there is provided a shielding member intercepting the equipotential magnetic planes of the leakage flux between the first and second joints for preventing thermal fracture of the insulator.
    Type: Grant
    Filed: June 15, 1978
    Date of Patent: May 27, 1980
    Assignee: Hitachi, Ltd.
    Inventor: Ichiro Ohara
  • Patent number: 4195331
    Abstract: A lamp changing module for totally enclosing a lamp when the module is withdrawn from a support such as an illuminator cabinet, and permitting exposure of the lamp when properly installed and connected to the support. A potentially explosive lamp is thereby contained within the module when it is removed so that even if it explodes it will not harm nearby personnel. It also protects personnel from burn hazards associated with lamp changing.
    Type: Grant
    Filed: December 30, 1977
    Date of Patent: March 25, 1980
    Assignee: Karl Storz Endoscopy-America, Inc.
    Inventor: Eric. M. Jones
  • Patent number: 4180754
    Abstract: An improved cylindrical Geiger-Mueller tube with a life at least ten times reater than that heretofore obtainable includes a re-entrant insulator at each end of the tube to support the coaxial anode and to shield the tube ends from the Geiger discharge.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: December 25, 1979
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Stephen Levy
  • Patent number: 4115722
    Abstract: A hollow cylindrical member composed of a high-voltage potting material is secured adjacent the photocathode to the high-voltage potting material encircling the image-tube. The hollow member is concentric with the axis of the tube and extends away from the photocathode. A plurality of equally spaced metallic discs are embedded in the potting material of the corona-shield interconnected by a plurality of resistors. A high-voltage is coupled to one of the metallic discs adjacent the photocathode and a ground is coupled to another of the metallic discs most remote from the photocathode.
    Type: Grant
    Filed: June 27, 1977
    Date of Patent: September 19, 1978
    Assignee: International Telephone and Telegraph Corporation
    Inventor: Charles Bruce Johnson
  • Patent number: 4045700
    Abstract: An X-ray image intensifier which includes a metal-ceramic bulb or tube, whose metal components are vacuum-tightly soldered to each other under the interposition of the electrically insulating ceramic. Through the weak conductivity of the surface of the ceramic portion there is achieved a potential distribution which, in the neighborhood of the solder, still so extensively conforms to the solder where no potential dropoff will be present and thereby also no reason for the producing of a peak discharge. The potential varies significantly only over longer distances.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: August 30, 1977
    Assignee: Siemens Aktiengesellschaft
    Inventor: Peter Wulff
  • Patent number: 4013913
    Abstract: An electrode arrangement for the detection of species ionized by radiant energy from a radiation source, comprising: an annular cathode; a shield, opaque to the radiant energy, extending across the cathode and having an aperture smaller than and coaxial with the annulus formed by the cathode; and an elongated anode having its distal end coaxially of the cathode and the shield aperture, the cathode being shielded from and the anode being exposed to the radiant energy from the radiation source.
    Type: Grant
    Filed: January 19, 1976
    Date of Patent: March 22, 1977
    Assignee: HNU Systems Inc.
    Inventors: John N. Driscoll, Frederick F. Spaziani
  • Patent number: 4000432
    Abstract: Intensifier tubes for x-rays or low-light levels form an image of photoelectrons which is focused on a fluorescent viewing screen. Stray magnetic fields, including the earth's field, bend the electron trajectories and distort the image. Magnetic shielding has been used around the tube, leaving the image-receiving end open. Magnetic field leaking through the open end is reduced by extending the end of the shield around the image-receiving aperture inward and forward of the edge of the tube.
    Type: Grant
    Filed: July 25, 1975
    Date of Patent: December 28, 1976
    Assignee: Varian Associates
    Inventors: Warren P. Coon, Elisha B. Merritt