Patents Assigned to Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
  • Patent number: 6696781
    Abstract: A silent discharge lamp which comprises a discharge vessel filled with a gas fill, a plurality of electrodes divided into separately operable groups, a dielectric layer between at least one anode part of the electrodes and the gas fill, and a luminescent layer which has elementary luminescent surfaces of at least two respective luminescent colors. Each elementary luminescent surface is assigned to a different electrode group. The electrode groups and the elementary luminescent surfaces are in each case two-dimensionally interleaved relative to one another so that the light emission surface of the gas discharge lamp can essentially be lit using each electrode group on its own, and the gas discharge lamp is designed so that it is possible to control the color of the light emission by controlling simultaneous operation of the electrode groups.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: February 24, 2004
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Udo Custodis, Angela Eberhardt
  • Patent number: 6693377
    Abstract: The invention relates to a printing method for applying dielectric layers made of solder glass on strip-shaped metal electrodes of discharge lamps, which are operated by means of pulsed dielectrically inhibited discharge. An aggregate having a higher melting temperature than solder glass, e.g. crystalline or amorphous aluminum oxide or quartz glass powder, is used as printing paste in said method. The typical percentage by weight of the aggregate is between 2 and 30%. Better wetting of the strip-shaped metal electrode is thus obtained.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: February 17, 2004
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Ulrich Mueller, Franz Zwaschka, Frank Vollkommer
  • Patent number: 6683325
    Abstract: An opto-electronic semiconductor element has a radiation emitting or receiving, that is, radiation active semiconductor chip secured to an electrically conductive base frame. One, or a plurality of chips, are surrounded by a housing which may be integral with or have, separately, a cover. All materials of the housing, as well as of the conductive base frame, have mutually matching thermal coefficients of expansion within the temperature ranges which arise during manufacture and in application of the semiconductive element, singly or as a plurality in a common housing. Glass, quartz glass, ceramic or glass ceramic are suitable for the housing or parts thereof; the conductive base frame is preferably made of cladded or jacketed copper wire or strip with an iron-nickel core. Assembling a plurality of chips in a housing which has a luminescence conversion layer, e.g. a phosphor applied thereto, permits construction of a flat light source.
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: January 27, 2004
    Assignees: Patent-Treuhand-Gesellschaft-für Elektrische Glühlampen mbH, Siemens Aktiengesellschaft
    Inventors: Guenter Waitl, Alfred Langer, Reinhard Weitzel
  • Patent number: 6674233
    Abstract: An illumination unit having at least one LED as light source, the LED emitting primary radiation in the range from 300 to 430 nm, this radiation being completely converted into longer-wave radiation by phosphors which are exposed to the primary radiation of the LED, in which unit the conversion takes place at least with the aid of a phosphor which emits green with a peak emission wavelength at 495 to 540 nm and which originates from the class of the Ce-activated sialons, the sialon corresponding to the formula Mp/2Si12−p−qAlp+qOqN16−q:Ce3+, where M=Ca individually or in combination with Sr, with q=0 to 2.5 and p=0.5 to 3.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: January 6, 2004
    Assignee: Patent-Treuhand-Gesellschaft für Elektrische Glühlampen mbH
    Inventors: Andries Ellens, Günter Huber
  • Patent number: 6670748
    Abstract: An illumination unit having at least one LED as light source, the LED emitting primary radiation in the range from 300 to 570 nm, this radiation being partially or completely converted into longer-wave radiation by phosphors which are exposed to the primary radiation of the LED, in which unit the conversion takes place at least with the aid of a nitride-containing phosphor which emits with a peak emission wavelength at 430 to 670 nm and which originates from the class of the Ce- or Eu-activated nitrides, oxynitrides or sialons.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: December 30, 2003
    Assignee: Patent-Treuhand-Gesellschaft für Elektrische Glühlampen mbH
    Inventors: Andries Ellens, Torsten Fries, Tim Fiedler, Günter Huber
  • Patent number: 6669866
    Abstract: A phosphor for light sources, the emission from which lies in the short-wave optical spectral region, as a garnet structure A3B5O12. It is activated with Ce, the second component B representing at least one of the elements Al and Ga, and the first component A is terbium or terbium together with at least one of the elements Y, Gd, La and/or Lu. In a preferred embodiment, a phosphor having a garnet of structure (Tb1−x−yRExCey)3(Al,Ga)5O12, where RE=Y, Gd, La and/or Lu; 0≦x≦0.5−y; 0<y<0.1 is used.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: December 30, 2003
    Assignees: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH, OSRAM Opto Semiconductors GmbH & Co., OHG
    Inventors: Franz Kummer, Franz Zwaschka, Andries Ellens, Alexandra Debray, Guenther Waitl
  • Patent number: 6657392
    Abstract: The invention relates to a silent discharge lamp in which support elements for supporting a top plate opposite a base plate are designed as a unipartite component of the top plate and have a tapering contour.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: December 2, 2003
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Lothar Hitzschke, Frank Vollkommer
  • Patent number: 6653887
    Abstract: The present invention relates to a self-locking circuit arrangement having an input voltage connection for applying an input voltage (UE), an output voltage connection for providing an output voltage (UA), a supply voltage connection for connecting a supply voltage (UV), a first switching element (T1) having a first and a second output connection and a control connection, a second switching element (T2) having a first and a second output connection and a control connection, where the first output connection of the first switching element (T1) is connected to the output voltage connection, the second output connection of the first switching element (T1) is connected to a reference-ground potential, the first output connection of the second switching element (T2) and also the control connection of the first switching element (T1) are connected to the input voltage connection, the second output connection of the second switching element (T2) is connected to the reference-ground potential, and the control connect
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: November 25, 2003
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Helmut Haeusser-Boehm, Michael Schaller
  • Patent number: 6650514
    Abstract: a protective circuit for a fluorescent lamp includes a third resistor (R3) that bridges a decoupling capacitor (C2), and a fourth resistor (R4) that connects a first reference point (A) to a positive pole of a DC voltage source (UZ), the resistors being selected such that the reference points are at the same potential without the fluorescent lamp inserted.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: November 18, 2003
    Assignee: Patent-Treuhand-Gesellschaft für Elektrische Gluehlampen mbH
    Inventor: Harald Schmitt
  • Patent number: 6642640
    Abstract: To ensure reliable electric contact, a discharge lamp has a tubular lamp vessel (1), a lamp base (4) and lamp electrodes (2, 3) which are applied to the wall of the lamp vessel (1) and in each case have an electrode section (20, 30) which is arranged outside the interior (11) of the lamp vessel (1) and serves as supply lead. The electric base contacts (5, 6) are connected in each case to an electrically conductive spring element (8, 9), each spring element (8, 9) bearing against the wall of the at least one tubular lamp vessel (1) and making an electric contact between in each case one electrode section (20, 30), arranged outside the lamp vessel (1), and a base contact (5, 6).
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: November 4, 2003
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Peter Helbig, Uwe Kantim, Gerwin Thiel
  • Patent number: 6636004
    Abstract: The discharge spacings in discharge lamps for dielectrically impeded discharges are shortened below 3 mm, as a result of which dead times of pulsed active-power injecting can be increased so strongly, for example beyond 50 ms, that the dimming properties of the discharge lamp are greatly improved.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: October 21, 2003
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Frank Vollkommer, Lothar Hitzschke
  • Patent number: 6634917
    Abstract: The invention relates to a method for producing a discharge lamp, which is preferably designed for dielectric barrier discharges. The innovation is that a frame is used in order to set, and secure in its position, an electrode running at a distance from the vessel faces in the discharge vessel of the discharge lamp. This frame is simultaneously used as an exhaust tube.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: October 21, 2003
    Assignee: Patent treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Rainer Kling, Reinhold Wittkoetter
  • Patent number: 6630769
    Abstract: A flat illumination device (1), includes a base plate and a front plate which are connected to form an at least partially transparent vessel which, in its interior, has an ionizable fill. In a partial region of the vessel, at least one of the two plates is at least in part provided with a mirror surface. An unmirrored partial region (12) of the vessel is designed to realize an illumination function.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: October 7, 2003
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Udo Custodis, Michael Seibold
  • Patent number: 6628066
    Abstract: The invention relates to a flat gas discharge lamp having a discharge vessel and electrodes, the discharge vessel comprising a base plate (1) and a top plate (7) and having at least one spacer element (8) between base plate (1) and top plate (7). Spacer elements usually disrupt the homogeneity of the luminance distribution on the top plate 7. In order to avoid this, the spacer elements (8) are additionally configured as dielectrically impeded electrodes. For this purpose, each spacer element (8) has an electrically conductive component (9) connected to an electrode or current feed. As a result, the spacer elements (8) are actively involved in the discharge and, consequently, in the production of light.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: September 30, 2003
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Angela Eberhardt, Michael Ilmer
  • Patent number: 6628081
    Abstract: An electric lamp, in particular a motor vehicle auxiliary light lamp, and a method for producing such a lam. The base of the lamp comprises an annular metal part (5) or resilient design for holding the lamp vessel (1), and a plastic part (6) provided with at least one hollow contact pin (7, 8). A supply lead (3, 4) projecting from the lamp vessel (1) is threaded into the hollow contact pin (7, 8) and welded to the latter such that the metal part (5) is under mechanical stress. In this way, backlash-free plug-and-socket connections are produced between the lamp vessel (1) and the metal part (5) or between the metal part (5) and the plastic part (6).
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: September 30, 2003
    Assignee: Patent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbH
    Inventors: Gerhard Behr, Peter Helbig
  • Patent number: 6624576
    Abstract: A sealed-in foil lamp comprising a metal base member of molybdenum and a coating applied on at least a portion thereof, the coating containing ruthenium alone or a ruthenium alloy.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: September 23, 2003
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbh
    Inventor: Bodo Mittler
  • Patent number: 6614166
    Abstract: The compact low-pressure discharge lamp (1) has a wound tubular discharge vessel (2) with at least four straight tubes (6, 7) which are in a polygonal arrangement and, close to or at the ends of the straight tubes (6, 7), are connected by transverse connections (8, 10, 11) to form a single continuous discharge path which is closed off in a gastight manner. A coil spring (14) made from metal, which runs parallel to the tubes (6, 7) is arranged in the center of the cylindrical cavity (13) formed by the straight tubes (6, 7) of the discharge vessel (2). The coil spring (14) reduces the firing voltage required.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: September 2, 2003
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Achim Hilscher, Thomas Noll
  • Patent number: 6611112
    Abstract: Appliance for discharge lamps, which has a load circuit with a resonance point at a resonant frequency fres. In order to start the discharge lamps, the load circuit is fed with a square-wave source voltage Uq, whose period duration Tper multiplied by the resonant frequency fres of the load circuit produces approximately a natural number n which is greater than 1. The pulse duration Tpulse at the source voltage Uq is in a range which is described by the following condition: 0.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: August 26, 2003
    Assignee: Patent Treuhand Gesellschaft für elektrische Glühlampen mbH
    Inventors: Franz Raiser, Bernhard Reiter
  • Patent number: 6609940
    Abstract: In a novel method in the field of the production of discharge vessels, in particular for silent flat radiators, an exhaust tube 3 for evacuating and filling is inserted into an opening 2 in the discharge vessel, it being possible in a simple way by means of an adapter 4 to achieve optimum fitting and sealing between a square inner cross section of the opening 2 and a round outer cross section of the exhaust tube 3.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: August 26, 2003
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Michael Seibold, Michael Ilmer, Angela Eberhardt, Hermann Speer
  • Patent number: 6605980
    Abstract: The present invention relates to a synchronous rectifier circuit having a transformer (Ü) in single-phase center-tap connection. MOSFETs containing a body diode are used as switches. The MOSFETs are connected up in such a way that a current flows only from source to drain. The channel of the MOSFETs is always switched on if current would flow through the body diode.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: August 12, 2003
    Assignee: Patent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbH
    Inventor: Helmut Haeusser-Boehm