Patents Assigned to Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
  • Patent number: 7649309
    Abstract: Phosphor from the class of the oxynitridosilicates, having a cation M which is doped with divalent europium, and having the empirical formula MSi2O2N2, where M=Sr1-x-yCayEux where 0.3?x+y?0.725, with a Ca/Eu ratio of >1, the oxynitridosilicate having an emission with a dominant wavelength in the range from 555 to 568 nm.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: January 19, 2010
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Tim Fiedler, Frank Jermann
  • Patent number: 7645054
    Abstract: An illuminating unit comprising a luminous means (5) and an optical element (1) that has a radiation entrance surface (2) facing the luminous means (5) and a radiation exit surface (3) averted from the luminous means (5). The optical element (1) has at least one holographic element (4) that is designed as a beam shaping element for the radiation (7) emitted from the luminous means (5).
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: January 12, 2010
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventor: Rupert Goihl
  • Patent number: 7530710
    Abstract: A color-tunable illumination system for imaging illumination having a tuning means and at least two light sources of different colors. The illumination system comprises a reflector having a reflector contour, the light sources being accommodated in the vicinity of the reflector contour, and a compact diffusing medium accommodated at the focal point of the reflector. The light from the light sources is directed substantially onto the diffusing medium and then, from there, is diffused onto the reflector contour, electronic driving of the light sources making it possible to regulate the intensity of the light sources separately from one another, with the result that the light leaving the reflector can be color-tuned.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: May 12, 2009
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Dirk Berben, Tim Fiedler, Frank Jermann
  • Publication number: 20090080210
    Abstract: A motor vehicle headlight (80) comprises at least two modules (70) for light production, the radiation characteristics of at least one of the modules (70) being adjustable in a reference system associated with the headlight. Preferably, modules (70) of the headlight (80) have different radiation characteristics and the irradiation characteristics of at least two of the modules (70) overlap to form an adjustable radiation characteristic of the headlight (80).
    Type: Application
    Filed: March 31, 2006
    Publication date: March 26, 2009
    Applicant: Patent-Treuhand-Gesellschaft Für Elektrische Glühlampen MBH
    Inventors: Thomas Reiners, Ralf Vollmer, Alexander Wilm
  • Patent number: 7489073
    Abstract: The phosphor having the composition xAE2SiO4:D.yREN, in which AE=(Sr, Ba, Ca, Mg) and D=Eu, and RE=La, Y, delivers a blue to yellow-orange emission and is distinguished by a high efficiency. It can be used for a very wide range of light sources.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: February 10, 2009
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Tim Fiedler, Wolfram Hempel, Frank Jermann
  • Patent number: 7459661
    Abstract: A sensor system has a video camera and an evaluation unit, the evaluation unit receiving a video signal from the video camera and providing output information relating to luminance and movement of an observation space. The evaluation unit can include a microcontroller that undertakes calculations in order to provide the output information. However, the sensor system can be included in a light control system. A method for controlling an artificial light component of controllable light sources via a light control system includes: picking up a video signal, relaying the video signal to the input of the evaluation unit, evaluating the video signal with reference to luminance and movement in the evaluation unit, outputting the information relating to luminance and movement at the output of the evaluation unit to a control unit and setting a desired brightness of the controllable light sources via the control unit.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: December 2, 2008
    Assignee: Patent - Treuhand - Gesellschaft für Elektrische Glühlampen mbH
    Inventors: Andreas Huber, Gotthard Schleicher
  • Patent number: 7459854
    Abstract: A high-pressure discharge lamp for a vehicle headlight having a discharge vessel and electrodes arranged therein for the purpose of generating a gas discharge, the discharge vessel having a central section which is delimited by two planes which are arranged perpendicularly to the connection path of the discharge-side ends of the electrodes and each extend through the discharge-side end of one of the electrodes, wherein the volume, which is arranged in said central section and is filled by the material of the discharge vessel, is greater than or equal to 95 mm3.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: December 2, 2008
    Assignee: Patent - Treuhand - Gesellschaft für elektrische Glühlampen mbH
    Inventors: Dirk Grundmann, Conrad Schimke
  • Patent number: 7456558
    Abstract: The invention relates to an electric incandescent lamp, in particular a vehicle headlight, having at least one incandescent filament which is arranged within a light-permeable lamp vessel, the at least one incandescent filament having different pitch factors at its two ends. In order to increase the luminance at the light/dark boundary of the lower beam, that end of the incandescent filament which is near to the base has a lower pitch factor.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: November 25, 2008
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Manfred Bühler, Klaus Wittmann
  • Patent number: 7456560
    Abstract: The invention relates to a vehicle headlight bulb with a bulb receptacle, a spiral wound filament (2) which is arranged inside the receptacle for the bulb (1) and a lamp base which has a metal base bushing (3) wherein the end (11) of the bulb receptacle (1), which is sealed by means of a molybdenum film seal (112, 113) is fixed. According to the invention, the metal base bushing (3) comprises at least one molded tab (32) which lies adjacent to the sealed end (11) of the bulb receptacle (1), in the overlapping area of the molybdenum films (112, 113), with current supply wires (23, 24) which protrude from the bulb receptacle and which are connected thereto, in order to reduce thermal load in the above-mentioned overlapping area during operation of the bulb.
    Type: Grant
    Filed: January 17, 2005
    Date of Patent: November 25, 2008
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventor: Klaus-Peter Knorr
  • Patent number: 7453213
    Abstract: The invention relates to a high-pressure discharge lamp, in particular a vehicle headlight high-pressure discharge lamp, having a lamp base, in whose interior is arranged a starting apparatus for the purpose of starting the gas discharge in the high-pressure discharge lamp and which is provided with an electromagnetic shield, and having a discharge vessel which has an end near to the base and an end remote from the base, a power supply line protruding out of the end, remote from the base, of the discharge vessel being passed back to the lamp base and being electrically coupled to the electromagnetic shield. The electromagnetic shield is preferably connected to the ground reference potential of an operating device of the high-pressure discharge lamp.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: November 18, 2008
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Stefan Hackenbuchner, Gunther Hirschmann, Frank Sroka
  • Patent number: 7446463
    Abstract: The invention relates to contact-making of dielectrically impeded discharge lamps by means of a mechanical procedure with plastic deformation of a contact surface 17. It is thus possible to dispense with thermal steps such as soldered connections or welded connections and to therefore make savings in terms of time and on the complexity of the apparatus used.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: November 4, 2008
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Gerhard Döll, Jörg Otterstätter
  • Patent number: 7443106
    Abstract: Circuit with a switch-off device for the operation of light sources The invention relates to a circuit with a switch-off device for the operation of light sources (Lp), have the following features: a self-commutated half-bridge inverter having a series circuit of an upper electronic switch and a lower electronic switch (T1, T2), which are joined at a half-bridge midpoint (M) and are connected between a supply voltage (+) and a ground potential, a start capacitor (C3) which is joined via a trigger element (DIAC) to a control electrode of the lower electronic switch (T2), and a switch-off device having an input (E) and an output, which are configured and connected so that they discharge the start capacitor (C3) if a switch-off signal is applied to the input (E). The switch-off device contains a time delay.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: October 28, 2008
    Assignee: Patent-Treuhand-Gesellschaft für Elektrische Glühlampen mbH
    Inventors: Marco Faccin, Felix Franck, Michele Menegazzi
  • Patent number: 7443109
    Abstract: An arrangement for supplying a constant current to at least one LED includes a current source (2; 2a, 2b) with an output capacitor (3) connected across the terminals of the current source. An output inductor (4) is associated with the output capacitor (3) whereby the current supplied flows through the inductor (4). A smoothing resistor (5) is preferably connected in parallel to the output inductor (4).
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: October 28, 2008
    Assignee: Patent-Treuhand-Gesellschaft für Elektrische Glühlampen mbH
    Inventors: Paolo De Anna, Ugo Francescutti
  • Patent number: 7439680
    Abstract: Apparatus for safely connecting a lamp to an equipment voltage ground, includes a rectification circuit for rectifying the power supply alternating voltage into a direct voltage, and an oscillating circuit for converting the direct voltage into alternating voltage for driving the lamp to work. The oscillating circuit includes a DC-blocking capacitor, a oscillating inductor and an oscillating capacitor orderly connected in series, and one end of the DC-blocking capacitor is connected to the output rectification voltage of the rectification circuit, and another end is connected to the oscillating inductor, while one end of the oscillating capacitor is connected to the equipment voltage ground, and another end is connected to the working voltage terminal of the lamp. The ground terminal of the lamp is electrically connected to the equipment voltage ground through a parallel circuit formed of a switch and a high impedance capacitor.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: October 21, 2008
    Assignee: Patent-Treuhand-Gesellschaft für Elektrische Glühlampen mbH
    Inventors: Ange Gao, Rene Twardzik
  • Patent number: 7429119
    Abstract: A protective device for a lamp, especially a high-pressure xenon discharge lamp or high-pressure mercury vapor discharge lamp, includes a pressurized lamp vessel and a protective envelope which surrounds the lamps in at least some sections, can be fixed to the lamp by two closures that engage around lamp shafts, and is made of a gas-permeable fleece.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: September 30, 2008
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Horst Gedack, Thomas Mehr
  • Patent number: 7411349
    Abstract: A UV radiator has an essentially tubular discharge vessel designed to produce dielectric barrier discharges at one end and sealed in a gas-tight manner at both ends, and in each case at least one elongate inner and outer electrode which is oriented parallel to the longitudinal axis of the discharge vessel. If it is imagined that the tubular part of the discharge vessel is split into two equal halves by an imaginary longitudinal section, the at least one inner electrode is arranged on the inside of the first imaginary tube half, and the at least one outer electrode is arranged on the outside of the second imaginary tube half, and essentially diametrically with respect to one another. As a result, and as a result of the shape and number and arrangement of the outer electrode(s), directional radiation characteristics are achieved.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: August 12, 2008
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Rainer Kling, Markus Roth, Reinhold Wittkötter
  • Patent number: 7402952
    Abstract: The incandescent lamp, which uses a carbon cycle process, is equipped with a luminous body which, together with a fill, is introduced in a vacuum-tight manner into a bulb, the luminous body including a metal carbide, the melting point of which is above that of tungsten. The distance between the luminous body and the wall of the bulb is less than 18 mm, with a first cycle process, which is attributed to the carbon, being effected by the use of carbon and hydrogen as fill additive, and a second cycle process, which is attributed to the metal, being effected by the use of halogen.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: July 22, 2008
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Axel Bunk, Matthias Damm, Georg Rosenbauer, Joachim Werner
  • Patent number: 7396270
    Abstract: A high-pressure discharge lamp, in particular a mercury-free high-pressure discharge lamp for a vehicle headlight, has a lamp base (1) and an axially symmetrical discharge vessel (30), in whose discharge space (300) an ionizable filling, containing metal halides, and electrodes (31, 32) are arranged for producing a gas discharge. The discharge vessel (30) is provided with transparent, partial frosting (37), which is limited to a section of the inside or outside of the discharge vessel (30) extending over part of the discharge vessel circumference, this section having a well-defined position with respect to the lamp base (1). Moreover, a simple production method is proposed for partial frosting (37) which is preferably arranged on the inside of the discharge vessel (30).
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: July 8, 2008
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Vladimir Högele, Thomas Reiners
  • Patent number: 7397192
    Abstract: Disclosed is a halogen incandescent lamp having a lamp vessel, which is sealed at one end and in which at least one luminous element is accommodated, a vessel section 42 being in the form of a side reflector which extends only over a subregion of the lamp vessel circumference. A light-exit window 40 adjoins this vessel section 42 in the circumferential direction. According to the invention, the light-exit window 40 is comparatively slightly curved in cross section, the vessel section 42 forming the side reflector bulging out away from the light-exit window 40. This bulged-out region is preferably provided with a kidney-shaped constriction 46.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: July 8, 2008
    Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
    Inventors: Matthias Damm, Christoph Krieglmeyer, Roland Stark
  • Patent number: 7388335
    Abstract: In the case of an apparatus for providing a sinusoidally amplitude-modulated operating voltage, two switches are arranged in the form of a half bridge, and an LC element is arranged downstream of the half bridge. The first switch is driven by a first square-wave signal in a clocking with the amplitude modulation frequency per clock cycle, and the second switch (QLOW) is driven by a second square-wave signal, which is shorter than the first signal, with a temporal offset with respect to the first signal in each clock cycle. The LC element (LMOD, CMOD) acts as a filter for the signal resulting from the driving of the switches at a connection point (K) between the switches and allows a DC voltage component and a sinusoidal component of the signal with the fundamental frequency of the clocking to pass through, but substantially filters out harmonics.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: June 17, 2008
    Assignee: Patent-Treuhand-Gesellschaft Für Elektrische Glühlampen mbH
    Inventor: Herbert Kästle