Patents Assigned to Patent-Treuhand-Gesellschaft fuer elektrische
  • Illumination device with at least one LED as the light source
    Publication number: 20060055315
    Abstract: The invention relates to a luminescence conversion led based illumination deice that emits primarily radiation in the range of from 370 and 430 nm of the optical spectrum (peak wavelength). Said radiation is converted to radiation having a longer wavelength using three luminescent substances that emit in the red, green and blue range.
    Type: Application
    Filed: October 27, 2005
    Publication date: March 16, 2006
    Applicants: PATENT-TREUHAND-GESELLSCHAFT FÜR ELEKTRISCHE GLÜHLAMPEN mbH, OSRAM OPTO SEMICONDUCTORS GmbH
    Inventors: Dieter Bokor, Andries Ellens, Günter Huber, Frank Jermann, Manfred Kobusch, Michael Ostertag, Wolfgang Rossner, Franz Zwaschka
  • Headlamp bulb
    Patent number: 7004609
    Abstract: A headlight lamp has at least one lamp vessel in which at least one luminous element is enclosed, and a lamp base, which is provided with the electric terminals of the headlight lamp. The base has an annular metallic holder in which the at least one lamp vessel is fixed, and at least three reference noses arranged in a common plane, and an annular base flange arranged parallel to the plane of the reference noses. The base flange has at least three lugs are arranged along its circumference, which are of resilient design and serve together with the reference noses for fastening the lamp in a headlight. The reference noses are integrally formed on a reference ring, which is connected to the annular metallic holder and to the base flange.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: February 28, 2006
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Gerhard Behr, Peter Helbig
  • Electrode system for a metal halide lamp, and associated lamp
    Patent number: 6995514
    Abstract: The electrode system for a metal halide lamp with ceramic discharge vessel (4) comprises an electrically conductive leadthrough (9, 10) and an electrode connected thereto, the leadthrough having a fusible region with respect to the electrode, in which that end of the electrode which faces the leadthrough is embedded, at least the fusible region containing one of the high-melting metals Mo or W, and the electrode having a shank made from tungsten. In the regions surrounded by the material of the leadthrough, the electrode has a positively locking means which at least comprises a recess in the shank of the electrode.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: February 7, 2006
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Frank Henning, René Roatzsch
  • Light-emitting diode module for vehicle headlamps, and a vehicle headlamp
    Patent number: 6991354
    Abstract: The invention relates to a light-emitting diode module for a vehicle headlamp, which has a carrier for a number of light-emitting diodes and which carrier has a lateral surface of axially symmetrical design relative to a longitudinal axis, a number of light-emitting diodes being arranged on the lateral surface of the carrier, and the carrier being provided with at least one light directing means in order to direct in directions transverse to the longitudinal axis of the carrier the light emitted by the light-emitting diodes.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: January 31, 2006
    Assignee: Patent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbH
    Inventors: Wilhelm Brandenburg, Oliver Hering, Thomas Reiners
  • Discharge lamp with ignition aid of a UV/VIS material having high secondary electron emission coefficient
    Patent number: 6984930
    Abstract: A dielectric barrier discharge lamp having electrodes arranged on the wall of the discharge vessel has a VUV/VIS reflection layer (6) made of a material with a high secondary electron emission coefficient on at least a part of the inner wall of the discharge vessel. A luminescent material layer (7) is in turn applied on the VUV/VIS reflection layer (6). Moreover, at least one partial region (8) without luminescent material is provided in the luminescent material layer (7), this at least one partial region (8) partially uncovering the underlying VUV/VIS reflection layer (6) and additionally being arranged at least in direct proximity to one or more electrodes (4) of the lamp. As a result, the ignition behavior of the lamp is improved, in particular during ignition in darkness.
    Type: Grant
    Filed: July 4, 2002
    Date of Patent: January 10, 2006
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventor: Gerhard Döll
  • Electrode for a high-pressure discharge lamp
    Patent number: 6984939
    Abstract: The electrode comprises a pin-like shank (7) and a head part (8), the electrode, in the region of its discharge-side end, forming a vessel (9) for an emitter, in which there is a bore (16) which is filled with emitter material (10). The vessel, at its discharge-side end face, forms a collar, having an inner collar part (13) which is curved convexly toward the bore and an outer collar part (14) which is curved convexly toward the side wall of the vessel.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: January 10, 2006
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glülampen mbH
    Inventor: Jörg Alexander Gilles
  • Discharge lamp for dielectrically impeded discharges having a corrugated cover plate structure
    Patent number: 6984932
    Abstract: The invention relates to a discharge lamp having a base plate and a cover which is arranged in an essentially parallel manner thereto and which is corrugated in order to enable light to exit in a homogeneous manner.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: January 10, 2006
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Lothar Hitzschke, Frank Vollkommer
  • Headlamp bulb
    Patent number: 6981793
    Abstract: The invention relates to a headlight lamp whose base (9) has a plastic ring (13) in which there are embedded at least two contact lugs (13a–13c) designed as electric terminals. The contact lugs (13a–13c) are arranged in a common plane perpendicular to the ring axis (13) and in each case project in the radial direction from the plastic ring (13).
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: January 3, 2006
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Gerhard Behr, Uwe Kantim, Peter Helbig
  • Method for producing a flat gas discharge lamp
    Patent number: 6976896
    Abstract: A process for producing a discharge vessel of a flat gas discharge lamp, in which the discharge vessel has a base plate (1), a frame (3) and a cover plate (2), as well as at least one spacer (6) between base plate (1) and cover plate (2). At least between one of the plates (2) and the frame (3), at least one space (6) is initially kept open as a filling opening. By partial fusion of at least a part (4, 5) of the frame, which may also comprise a layer (4) of soldering glass and local elevations (5), the filling opening (6) is eliminated after the filling operation. The distance between the vessel plates (1, 2) is defined by the spacers (7), which remain hard even during the joining operation.
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: December 20, 2005
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Angela Eberhardt, Michael Ilmer, Michael Seibold
  • Method for producing a silent flat radiator by softening a limited number of supports
    Patent number: 6976898
    Abstract: The invention relates to an improved method of production for a flat radiator discharge lamp designed for dielectrically impeded discharges, in which, during a filling step for the discharge vessel, a plate of the discharge vessel is jacked up on parts, later softening, of support elements in order to be lowered onto the other plate at a specific temperature. In this case, the support elements serve, in addition, to improve the mechanical stability of the finished flat radiator. According to the invention, only a small number of the support elements present in a relatively large number are used for the outlined function of holding up the plate.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: December 20, 2005
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Lothar Hitzschke, Frank Vollkommer
  • Image display device comprising a plurality of silent gas discharge lamps
    Patent number: 6972519
    Abstract: The invention relates to a preferably large-format image display device that is constructed from a plurality of individual silent gas discharge lamps.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: December 6, 2005
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Udo Custodis, Michael Seibold
  • Sealing foil and associated lamp having this foil
    Patent number: 6969950
    Abstract: Sealing foil for making a lamp (1), comprising a metallic base body made from molybdenum and a coating which has been applied to at least part of the base body and which contains chromium, rhenium or ruthenium, alone or as an alloy, the foil being formed as a stack comprising two parts (10, 11) which have a different coating.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: November 29, 2005
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Franz Breuer, Axel Bunk, Bodo Mittler
  • Tubular discharge lamp with ignition aid
    Patent number: 6960874
    Abstract: A dielectric barrier discharge lamp (1) having a tubular discharge vessel (2) and a luminescent material layer on at least a part of the inner wall of the discharge vessel (2) and having elongate electrodes (3) is provided with a coating (10) on a partial region of the inner wall at least at one end of the tubular discharge vessel (2), which coating additionally covers an end of at least one elongate electrode (3) . The material of the coating (10) has a high secondary electron emission coefficient. As a result, the ignition behavior of the lamp is improved, in particular during ignition in darkness.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: November 1, 2005
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventor: Gerhard Döll
  • Metal halide fill, and associated lamp
    Patent number: 6946797
    Abstract: A metal halide fill for forming an ionizable fill comprising at least one inert gas, mercury, and at least one halogen, the fill additionally comprising the following constituents: Mn halide and V halide. This fill may in particular be present in the discharge vessel of a metal halide lamp.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: September 20, 2005
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventor: Hans Eisemann
  • Method for producing a gas discharge lamp
    Patent number: 6901772
    Abstract: A method for producing containers for gas discharge lamps, which consists in melting glass by incident light radiation.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: June 7, 2005
    Assignee: Patent-Treuhand-Gesellschaft für Elektrische Glühlampen mbH
    Inventors: Angela Eberhardt, Michael Ilmer, Michael Seibold
  • Discharge lamp having capacitive field modulation
    Patent number: 6897611
    Abstract: The invention relates to the capacitive modulation of the field distribution in a silent discharge lamp 1, by a structured, electrically conductive device 2 for definition of preferred locations for discharge structures in the lamp 1.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: May 24, 2005
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Lothar Hitzschke, Frank Vollkommer
  • Dielectrically impeded discharge lamp with a spacer
    Patent number: 6879108
    Abstract: A discharge lamp, suitable for operation by means of dielectrically impeded discharge, having a discharge vessel with two at least partially parallel vessel walls (2; 7), and at least one spacer (1) made from optically transparent insulating material. The or each spacer (1) is in contact with the two vessel walls (2; 7) via bearing surfaces. The or each spacer has an optically diffuse surface (8) at least in the region of one bearing surface.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: April 12, 2005
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Michael Ilmer, Angela Eberhardt, Michael Seibold
  • Incandescent lamp for motor vehicle headlights
    Patent number: 6879102
    Abstract: The invention relates to an incandescent lamp for motor vehicle headlights, having at least one incandescent filament (2) arranged inside the lamp vessel, and a shading device (4). A coil exit (2a) of the incandescent filament (2) is joined to an edge section (41) of the shading device (4) running substantially parallel to the coil axis, in order to ensure an improved suspension of the incandescent filament (2).
    Type: Grant
    Filed: May 1, 2003
    Date of Patent: April 12, 2005
    Assignee: Patent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbH
    Inventors: Gerhard Behr, Manfred Bühler, Christian Seichter, Klaus Wittmann
  • Apparatus for operating discharge lamps
    Patent number: 6873122
    Abstract: An apparatus for operating a plurality of discharge lamps is to be designed so as to be more cost-effective. A first current control device, in particular a heat-sensitive resistor having a positive temperature coefficient, is connected in parallel with a first contact device for electrically connecting a first discharge lamp. Furthermore, a second contact device for electrically connecting a second discharge lamp is connected in parallel with a second current control device, the first and second contact devices being connected in series. A defined preheating period for the lamps can therefore be achieved. By using a sequential starting capacitor in parallel with one of the lamps, impermissible load current surges may be avoided.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: March 29, 2005
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventor: Harald Schmitt
  • Drive circuit for an LED array
    Patent number: 6864867
    Abstract: A drive circuit for an LED array comprises a first LED cluster and at least one second LED cluster. A control loop is designed to drive a switch of the first LED cluster so as to achieve a constant mean value of the current (ILED) flowing through the first LED cluster the control loop being designed for also driving switches of the further LED clusters. The drive circuit also comprises a total current detection device (RMES) with the aid of which it is possible to determine an actual magnitude (UMess) which corresponds to the sum of the currents through at least two of the second LED cluster.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: March 8, 2005
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventor: Alois Biebl