Induction-type Discharge Device Load Patents (Class 315/248)
  • Patent number: 10271390
    Abstract: A lighting fixture includes a solid-state light source and driver circuitry. The solid-state light source includes at least one light emitting diode (LED). The driver circuitry includes one or more silicon carbide (SiC) switching components, and is coupled to the solid-state light source. Further, the driver circuitry is configured to receive an alternating current (AC) input voltage and generate a driver output current for driving the at least one LED from the AC input voltage. By using silicon carbide (SiC) for the switching components in the driver circuitry, the efficiency of the driver circuitry and thus the lighting fixture may be significantly increased, while simultaneously reducing the cost and complexity of the driver circuitry and thus the lighting fixture when compared to conventional lighting fixtures.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: April 23, 2019
    Assignee: Cree, Inc.
    Inventors: Yuequan Hu, Nicholas William Medendorp, Jr., Douglas E. Keiter
  • Patent number: 10141179
    Abstract: An induction RF fluorescent lamp having a bulbous vitreous portion of the induction RF fluorescent light bulb including a lamp envelope filled with a working gas mixture. The lamp includes a power coupler and an electronic ballast. A first metallic structure is attached to a cavity wall and extends outwardly radially therefrom and within the lamp envelope outside a re-entrant cavity including mercury. The first metallic structure is mounted within the lamp envelope and adapted to absorb power from the electric field and induce discharge during a turn-on phase of the induction RF fluorescent lamp in a manner sufficient to rapidly heat and vaporize the mercury and promote rapid luminous development during the turn-on phase of the induction RF fluorescent lamp.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: November 27, 2018
    Assignee: Lucidity Lights, Inc.
    Inventors: John R. Goscha, Walter Peter Lapatovich, David Alan Goodman, David Wentzel, Felix I. Alexandrov
  • Patent number: 10114434
    Abstract: A heat dissipation module being disposed in an electronic device is provided. The electronic device has a heat source. The heat dissipation module includes an evaporator, a pipe, a magnetic field generator and a plurality of magnetic powder. The heat source is heat conducting to the evaporator. The pipe is connected to the evaporator to form a loop therewith, and a working fluid is filled in the loop. The magnetic field generator is disposed outside of the evaporator. The magnetic powder is movably disposed in the evaporator. A magnetic field generated by the magnetic field generator drives the magnetic powder to form a channel in the evaporator where the working fluid passes through. The heat generated by the heat source is transmitted to the evaporator, and the working fluid in liquid phase absorbs the heat and is phase-transited to vapor phase and flows from the evaporator towards the pipe.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: October 30, 2018
    Assignee: Acer Incorporated
    Inventors: Yung-Chih Wang, Wen-Neng Liao, Cheng-Wen Hsieh
  • Patent number: 10101739
    Abstract: A multi-body self-propelled device can include a drive body and a coupled head. The drive body can include a spherical housing, an internal drive system within the spherical housing to propel the multi-body self-propelled device, and a magnet holder coupled to the internal drive system to hold a first set of magnetic elements. The drive body can further include a first power source within the spherical housing to power the internal drive system and a first inductive interface. The coupled head can include second set of magnetic elements to establish a magnetic interaction with the first set of magnetic elements through the spherical housing. The coupled head can also include a second power source, and a second inductive interface. The multi-body self-propelled device can transfer power between the coupled head and the drive body via the first and the second inductive interfaces.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: October 16, 2018
    Assignee: SPHERO, INC.
    Inventors: David Clarke, Prashant Luitel
  • Patent number: 10002752
    Abstract: A UV system for irradiating a substrate includes a RF source capable of generating RF energy, a UV lamp capable of emitting UV energy when excited by the RF energy generated by the RF source, and a monitor coupled to the RF source. The monitor includes data relating to the RF source. The UV system further includes a controller capable of communication with the monitor, and the controller determines if the RF source is suitable for operation with the UV system based on the data of the monitor and/or the end of its useful life.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: June 19, 2018
    Assignee: NORDSON CORPORATION
    Inventor: James M. Khoury
  • Patent number: 9923558
    Abstract: A magnetic field generator. In one embodiment, the magnetic field generator includes a drive circuit including a MOSFET gate driver having an output terminal; a drive capacitor having a first and second terminal, a tank circuit including a tank circuit capacitor having a first and second terminal and a field-producing coil having a first and second terminal, wherein the first terminal of the tank circuit capacitor and the first terminal of the field-producing coil comprise the first terminal of the tank circuit, wherein the second terminal of the tank circuit capacitor and the second terminal of the field-producing coil comprise the second terminal of the tank circuit, wherein the first terminal of the drive capacitor is in electrical communication with the output terminal of the MOSFET gate driver, and wherein the second terminal of the drive capacitor is in electrical communication with the first terminal of the tank circuit.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: March 20, 2018
    Assignee: RESONANT CIRCUITS LIMITED
    Inventors: Paul Southern, Simon Hattersley
  • Patent number: 9899877
    Abstract: An inductive power transfer system comprises a transmitter circuit comprising a transmitter coil and a receiver circuit comprising a receiver coil spaced from the transmitter coil. The transmitter circuit is in the form of a Class E amplifier with a first inductor and a transistor in series between the terminals of a power supply. A first transmitter capacitance is in parallel with the transistor between the first inductor and a power supply terminal, a primary tank circuit in parallel with the first transmitter capacitance, the primary tank circuit comprising the transmitter coil and a second transmitter capacitance arranged in parallel with the transmitter coil, and a third transmitter capacitance in series with the first inductor between the first transmitter capacitance and the primary tank circuit. The second transmitter capacitance is selected such that a resonant frequency of the primary tank circuit is not equal to the first frequency.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: February 20, 2018
    Assignee: Drayson Technologies (Europe) Limited
    Inventors: Paul Mitcheson, Stepan Lucyszyn, Manuel Pinuela Rangel, David Yates
  • Patent number: 9812314
    Abstract: The invention relates to a lamp (1) comprising a light source (2) that can be excited by microwaves to provide illumination and a housing (4) surrounding the light source, said housing having at least one light exit opening (5). The light exit opening (5) has associated therewith a grille structure (6) or a labyrinth structure (7) acting as a microwave shield.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: November 7, 2017
    Assignee: EATON PROTECTION SYSTEMS IP GMBH & CO. KG
    Inventors: Jens Burmeister, Gerhard Schwarz
  • Patent number: 9801261
    Abstract: Systems and methods of providing illumination may be provided in accordance with the invention. A lighting unit may be provided comprising a plurality of light sources, each light source of the plurality being at least partially surrounded by an optical element, and a support assembly configured to support the light source above a surface. The light sources may be radio frequency (RF) coupled electrodeless plasma sources, and the support assembly may be a high-mast support assembly. In some embodiments, the optical element directs light toward the surface. In some configurations, each light source of the plurality may have one or more independently controllable and/or adjustable lighting characteristics. A lighting unit may communicate with a controller, which may provide instructions for controlling the light sources. A lighting system may be provided with a host controlling a plurality of lighting units, which may be organized into networks, and/or zones.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: October 24, 2017
    Assignee: BRIGHT LIGHT SYSTEMS, INC.
    Inventors: Bradley D. Lurie, John Parker Chalmers, Phillip Daniel Graham
  • Patent number: 9754777
    Abstract: Electrodeless high intensity discharge lamps have the promise of higher reliability and higher efficiency than traditional electroded high intensity discharge lamps. However most electrodeless HIDs operate in the frequency range of around 400 MHz to 2.5 GHz resulting in expensive, inefficient RF drivers that reduce the overall efficacy of the lamp. Operating the lamp at lower frequencies results in substantial increase in the size of the resonators used in traditional electrodeless HIDs. In this invention a novel design is used to lower the operating frequency of the resonator without increasing the size of the resonator. This provides an avenue to increase the conversion efficiency of the RF driver and the efficacy of the lamp system.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: September 5, 2017
    Assignee: SPL Industries USA, Inc.
    Inventors: Mehran Matloubian, Timothy J. Brockett, Gregg A. Hollingsworth
  • Patent number: 9730294
    Abstract: A lighting device with a drive device for dimming light-emitting diodes. The drive device comprises a dimming component that operates a switch in response to both a change in an input power signal and a system temperature. In one example, the dimming device can include a waveform generator that generates a signal with a waveform having levels that change in response to changes in temperature. The waveform defines the time during which the switch is open and closed, thereby determining the period of time the LEDs are energized. By operating the LEDs in this manner, the drive device effectively dims the LEDs to reduce the operating temperature and cool the LEDs.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: August 8, 2017
    Assignee: GE LIGHTING SOLUTIONS, LLC
    Inventor: Bruce Richard Roberts
  • Patent number: 9721759
    Abstract: Described herein are techniques for supplying radio frequency (RF) power to a large area plasma source so as to produce a plasma that is substantially uniform in two spatial dimensions. The RF power may be supplied by a power supply system, which may comprise a RF source and a distribution network. The distribution network may comprise a matching network, and a branching circuit that divides the RF power into several branches. Each of the branches of the distribution network may include a phase shifter that shifts the RF signal (which carries the RF power) by an odd multiple of 90°, and a blocking filter which blocks any harmonics and other unwanted frequencies which are reflected from a plasma source. The output of the branches may be coupled to feed points that are spatially distributed over the one or more electrodes of the plasma source.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: August 1, 2017
    Assignee: AIXTRON SE
    Inventors: Richard Keith Karlquist, Stephen Edward Savas, Robert Eugene Weisse
  • Patent number: 9722566
    Abstract: A high-Q factor resonator includes a solenoid having an embedded capacitor assembled in a machinable high-frequency dielectric printed circuit board (“PCB”), or other substrate. The solenoid comprises a plurality of surface conductors positioned on upper and lower surfaces of the PCB. The solenoid further comprises a plurality of conductive vias extending through the PCB between the surface conductors, and at least two aligned vias are separated by a capacitive gap. A liquid crystal dielectric is embedded within the capacitive gap in order to control the capacitance. Accordingly, a tunable capacitive filter is achieved by changing the dielectric permittivity of the liquid crystal. In one example, a nematic liquid crystal is sealed in the capacitive gap and has its permittivity changed with a low frequency bias to tune the capacitor.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: August 1, 2017
    Assignee: Board of Trustees of the University of Alabama, for and on behalf of the University of Alabama in Huntsville
    Inventors: John D. Williams, Robert Lindquist
  • Patent number: 9627241
    Abstract: A resin sheet attaching method of attaching a resin sheet to a workpiece. The resin sheet attaching method includes a molecular weight reducing step of applying vacuum ultraviolet radiation to the front side of the resin sheet, thereby cutting an intermolecular bond in a surface region having a depth of tens of nanometers from the front side of the resin sheet to thereby reduce the molecular weight of the surface region and produce an adhesive force, and a resin sheet attaching step of attaching the front side of the resin sheet to the workpiece after performing the molecular weight reducing step.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: April 18, 2017
    Assignee: DISCO CORPORATION
    Inventor: Kazuhisa Arai
  • Patent number: 9575481
    Abstract: A fascia panel assembly includes an electrically non-conductive fascia panel, an electrically non-conductive isolator, and a capacitance sensor. The sensor capacitively couples to an electrically conductive object proximal to the sensor while the sensor is driven with an electrical charge such that capacitance of the sensor changes due to the sensor capacitively coupling with the object. The isolator is sandwiched between the fascia panel and the isolator.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: February 21, 2017
    Assignee: UUSI, LLC
    Inventors: Todd R. Newman, John M. Washeleski, Andrew E. Blank, David W. Shank, Edward J. Cox, II
  • Patent number: 9578725
    Abstract: A starting device for discharge lamps including an ignitor and a ferromagnetic ballast, composed of a toroidal core, equipped with at least an air gap, and an electric coil wound around the toroidal core.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: February 21, 2017
    Assignee: EASYLUMEN S.R.L.
    Inventors: Alberto Menghi, Demos Fuochi
  • Patent number: 9544958
    Abstract: An LED driver circuit includes a first terminal to which a current path of the switch device is connected at one end thereof; a second terminal to which the current path of the switch device is connected at another end thereof, the switch device and a battery being connected in series between the first terminal and the second terminal; a detection circuit that periodically detects a current flowing to the first terminal and outputs a detection signal responsive to a result of the detection at a first node; a comparison circuit that compares a detection voltage responsive to the detection signal with a threshold voltage and outputs a comparison result signal responsive to a result of the comparison; and a control circuit that controls a current detection operation of the detection circuit and controls driving of the LED lamp based on the comparison result signal.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: January 10, 2017
    Assignee: SHINDENGEN ELECTRIC MANUFACTURING CO., LTD.
    Inventor: Isao Ohki
  • Patent number: 9526906
    Abstract: Some embodiments of the disclosure may include a device for wirelessly powering an implant unit in a body of a subject from a location outside of the body of the subject, wherein the implant unit includes a secondary antenna for wirelessly receiving energy. The device may include a primary antenna configured to be located external to the body of the subject, a circuit electrically connected to the primary antenna, and at least one processor electrically connected to the primary antenna and the circuit. The at least one processor may determine a resonant frequency mismatch between a first resonant frequency associated with the primary antenna and a second resonant frequency associated with the secondary antenna associated with the implant unit; and apply an adjustment to at least one component of the circuit to cause a change in the first resonant frequency associated with the primary antenna and a reduction in the resonant frequency mismatch.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: December 27, 2016
    Assignee: NYXOAH SA
    Inventor: Adi Mashiach
  • Patent number: 9524861
    Abstract: An induction RF fluorescent lamp, comprising a vitreous envelope filled with a working gas mixture, a power coupler comprising at least one winding of an electrical conductor for receiving an alternating voltage and current to generate an alternating magnetic field and thereby induce an alternating electric field within the lamp envelope, an electronic ballast providing appropriate voltage and current to the power coupler and a main mercury amalgam having a vapor pressure at room temperature which is higher than the vapor pressure of the mercury amalgam formed on the flag.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: December 20, 2016
    Assignee: Lucidity Lights, Inc.
    Inventors: John R. Goscha, Walter Peter Lapatovich, David Alan Goodman, David Wentzel
  • Patent number: 9497846
    Abstract: A plasma generator includes a pair of identical spiraled electrical conductors separated by dielectric material. Both spiraled conductors have inductance and capacitance wherein, in the presence of a time-varying electromagnetic field, the spiraled conductors resonate to generate a harmonic electromagnetic field response. The spiraled conductors lie in parallel planes and partially overlap one another in a direction perpendicular to the parallel planes. The geometric centers of the spiraled conductors define endpoints of a line that is non-perpendicular with respect to the parallel planes. A voltage source coupled across the spiraled conductors applies a voltage sufficient to generate a plasma in at least a portion of the dielectric material.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: November 15, 2016
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: George N. Szatkowski, Kenneth L. Dudley, Larry A. Ticatch, Laura J. Smith, Sandra V. Koppen, Truong X. Nguyen, Jay J. Ely
  • Patent number: 9392752
    Abstract: A lamp apparatus for horticulture lighting is disclosed. The lamp apparatus is a high intensity electrodeless plasma lamp with an optimized spectrum for horticulture applications. The spectrum is provided from single light source and consists of peaks in the blue range of the spectrum, 400 nm to 470 nm, needed for early growth cycle of the plant as well as peaks in the red range of the spectrum, 600 nm to 700 nm, desirable for flowering cycle while providing lower amount of light in the green spectral region which is typically reflected by the plants. The ratio of the red spectrum to blue spectrum provided by the lamp can be varied by adjusting the RF power to the lamp.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: July 19, 2016
    Assignee: Topanga USA, Inc.
    Inventor: Douglas A. Doughty
  • Patent number: 9379777
    Abstract: An apparatus including a coil antenna; and near field communication (NFC) circuitry connected to the coil antenna. The NFC circuitry is configured to create a modulated signal from an input audio signal, and output the modulated signal to the coil antenna.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: June 28, 2016
    Assignee: Nokia Technologies Oy
    Inventor: Ossi E. Maenpaa
  • Patent number: 9324495
    Abstract: A planar closed-magnetic-loop inductor and a method of fabricating the inductor are described. The inductor includes a first material comprising a cross-sectional shape including at least four segments, at least one of the at least four segments including a first edge and a second edge on opposite sides of an axial line through the at least one of the at least four segments. The first edge and the second edge are not parallel.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: April 26, 2016
    Assignee: International Business Machines Corporation
    Inventors: Robert E. Fontana, Jr., William J. Gallagher, Philipp Herget, Eugene J. O'Sullivan, Lubomyr T. Romankiw, Naigang Wang, Bucknell C. Webb
  • Patent number: 9307591
    Abstract: Systems, methods, and devices for providing a luminaire inductively coupled to a power transmission line include a current transformer containing a plurality of tap points, and a plurality of tap switches that can be coupled to the tap points. The plurality of tap switches are connected to a microcontroller. Further, the systems, methods, and devices include an energy storage device, and LED light source(s). In some instances the current transformer powers the LED light source(s), and in other instances, the current transformer charges the energy storage device and the energy storage device in turn powers the LED light source(s), and in yet other instances, a combination of powering directly from the current transformer or energy storage device may be switched back and forth depending on a variety of parameters.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: April 5, 2016
    Assignee: COOPER INDUSTRIES HOLDINGS (IRELAND)
    Inventors: Gregg James Haensgen, John Fredrick Banting
  • Patent number: 9305765
    Abstract: An induction RF fluorescent lamp, comprising a bulbous vitreous portion filled with a working gas mixture, a power coupler comprising at least one winding of an electrical conductor for receiving an alternating voltage, and an electronic ballast providing appropriate voltage and current to the power coupler and operating at a frequency greater than 5 MHz wherein the electronic ballast comprises an EMI filter, an AC-to-DC converter, a DC bus, an input choke inductor and a DC-to-AC inverter.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: April 5, 2016
    Assignee: Lucidity Lights, Inc.
    Inventors: John R. Goscha, Victor D. Roberts, Juan Manuel Rivas-Davila, Luke Christopher Raymond
  • Patent number: 9276492
    Abstract: An LED light source includes a sub-circuit (24) that is connectable via terminals (12,13) to an electronic transformer and to a powered circuit including at least one LED (4). The sub-circuit (24) includes a sub-circuit rectifier (1a, 1b, 1c, 1d) that is connectable to the transformer (25), and a constant current regulator (7) and a sub-circuit capacitor (6) that are connected parallel to the sub-circuit rectifier (1a, 1b, 1c, 1d).
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: March 1, 2016
    Assignee: Marulaled (Pty) Limited
    Inventor: Gerardus Geertruud De Vaal
  • Patent number: 9275845
    Abstract: A ceramic metal-halide lamp is provided that can improve both lamp efficacy and color characteristics, and in which light color shift from the white region can be prevented when the lamp is dimmed. The lamp includes a luminous material, which contains sodium iodide (NaI), cerium iodide (CeI3), thallium iodide (TIl), dysprosium iodide (DyI3) and indium iodide (InI). The amount D[DyI3] of dysprosium iodide DyI3 is selected so as to fall within a range of 0.07 mg/cm3?D[DyI3]?1.53 mg/cm3 and a weight ratio R[InI/TIl] of indium iodide InI relative to thallium iodide TIl contained in the luminous material is selected to so as to fall within a range of 0<R[InI/TIl]?0.23.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: March 1, 2016
    Assignee: Iwasaki Electric Co., Ltd.
    Inventors: Yasuhisa Matsumoto, Yasushi Sasai, Akiyoshi Maehara
  • Patent number: 9277633
    Abstract: A method and system for powering gas-filled lamps using radio and/or microwave frequencies is disclosed. The method and system may include a gas-filled lamp, an antenna positioned proximal to the gas-filled lamp, a conductive element surrounding the gas-filled lamp, and a power source connector coupled to the antenna.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: March 1, 2016
    Inventors: Elizabeth Mako, Frederick Michael Mako
  • Patent number: 9245732
    Abstract: A lighting apparatus is provided that includes a magnetron configured to generate microwaves having a predetermined frequency, a waveguide including a first wave guide space configured to introduce and guide the microwaves and a second wave guide space expanded from the first wave guide space, a resonator to which the microwaves are transmitted from the waveguide and a bulb located in the resonator, the bulb encapsulating a light emitting material and being configured to emit light in response to the transmitted microwaves. The second wave guide space is located in a transmission path of the microwaves transmitted from the magnetron to the resonator.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: January 26, 2016
    Assignee: LG Electronics Inc.
    Inventors: Junsung Kim, Hyunjung Kim, Donghun Kim
  • Patent number: 9209008
    Abstract: A fast starting induction RF fluorescent lamp that is able to replace an ordinary incandescent light bulb, both in its ability to screw into a standard incandescent light bulb socket and to have the general look of the ordinary incandescent light bulb, but with all of the advantages of an induction lamp, as described herein. The present disclosure describes structures for an induction RF fluorescent lamp that includes a bulbous portion, an electronics portion, and a screw base, creating an external look that is similar to the profile of an ordinary incandescent light bulb, and with structures within the bulbous portion that facilitate rapid luminous development during the turn-on phase of the induction fluorescent lamp.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: December 8, 2015
    Assignee: Lucidity Lights, Inc.
    Inventors: John R. Goscha, Walter Peter Lapatovich, David Alan Goodman, David Wentzel
  • Patent number: 9204520
    Abstract: A method for operating a high-pressure discharge lamp outside the nominal power range thereof is provided. The method may include: providing the high-pressure discharge lamp; and varying relative to operation at nominal power, one of at a lamp power of less than 85% of the nominal power and at a lamp power of greater than 110% of the nominal power at least one or more of the following parameters: lamp frequency, lamp current in a commutation pulse, length of the commutation pulse, and the commutation pattern.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: December 1, 2015
    Assignee: OSRAM GmbH
    Inventor: Norbert Magg
  • Patent number: 9194554
    Abstract: Various embodiments of the present invention provide a light emitting diode (LED) lighting fixture and methods of installing the same. In various embodiments, an LED lighting fixture may comprise: at least one socket comprising a socket opening; at least one LED positioned substantially within the socket opening; at least one shield member positioned adjacent the at least one socket such that the shield substantially encloses the socket opening; at least one decorative light shade; at least one cover comprising a neck portion having an internal surface, the internal surface defining a cover opening. The cover opening is configured to receive there-through at least a portion of a socket and substantially engage the socket. At least a portion of the cover is configured to substantially engage the decorative light shade. Also, at least a portion of the cover is configured to substantially enclose the LED and shield.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 24, 2015
    Assignee: FEIT ELECTRIC COMPANY, INC.
    Inventor: Alan Feit
  • Patent number: 9177779
    Abstract: An electrode-less plasma lamps, comprising generally of a bulb containing a gas-fill that is excited to produce light using radio-frequency (RF) energy. In specific embodiments, the use of grounded coupling-elements with integrated bulb assemblies simplifies manufacturability, improves resonant frequency control, and enables the use of solid, partially filled, and hollow lamp bodies. In an example, the lamp is configured with an rf feed that is substantially normal to a direction of the bulb and associated support member.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: November 3, 2015
    Assignee: Topanga USA, Inc.
    Inventors: Timothy J. Brockett, Mehran Matloubian
  • Patent number: 9159520
    Abstract: A LUWPL luminaire has a housing with a lower transparent closure and a heat dissipating top of cast aluminum. This has a suspension eye. The housing has an upper flange via which it is bolted with the interposition of a seal to a underside rim of the top. Within the rim, the underside is substantially flat, with a magnetron attachment boss and other attachment points. A magnetron is supported by being clamped by a saddle to the attachment boss at the magnetron's anode. The magnetron is fast with a transition box and a crucible support block. A bracket fixed to certain of the attachment points extends down from the top is screwed to the transition box. Thus the LUWPL parts are securely supported below the top.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: October 13, 2015
    Assignee: Ceravision Limited
    Inventors: Paul Carpenter, Andrew Simon Neate
  • Patent number: 9143204
    Abstract: This invention eliminates the need for “capacitor coupling” or “transformer coupling,” and the associated undesirable parasitic capacitance and inductance associated with these coupling techniques when designing high frequency (˜60 GHz) circuits. At this frequency, the distance between two adjacent stages needs to be minimized. A resonant circuit in series with the power or ground leads is used to isolate a biasing signal from a high frequency signal. The introduction of this resonant circuit allows a first stage to be “directly coupled” to a next stage using a metallic trace. The “direct coupling” technique passes both the high frequency signal and the biasing voltage to the next stage. The “direct coupling” approach overcomes the large die area usage when compared to either the “AC coupling” or “transformer coupling” approach since neither capacitors nor transformers are required to transfer the high frequency signals between stages.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: September 22, 2015
    Assignee: Tensorcom, Inc.
    Inventors: KhongMeng Tham, Zaw Soe
  • Patent number: 9129791
    Abstract: An induction RF fluorescent light lamp capable of providing increased structural support and axial alignment for a power coupler located in a re-entrant cavity of a lamp envelope of the induction RF fluorescent light lamp, the lamp envelope with re-entrant cavity both covered on a partial vacuum side with phosphor and filled with a working gas mixture, the re-entrant cavity having an open entrance end and a closed innermost end, and a pliable spacer positioned between and in contact with both the innermost end of the power coupler and the innermost end of the re-entrant cavity, the pliable spacer having a shape that both provides structural support to prevent movement of the power coupler with respect to the re-entrant cavity and to provide axial alignment of the power coupler to the re-entrant cavity.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: September 8, 2015
    Assignee: Lucidity Lights, Inc.
    Inventors: Valery A. Godyak, Jakob Maya
  • Patent number: 9129792
    Abstract: A fast starting induction RF fluorescent lamp comprising a power coupler with conductive material in contact with the power coupler to reduce extraneous electromagnetic radiation emanating from the power coupler, and with structures within the bulb envelope that facilitate rapid luminous development during a turn-on phase.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: September 8, 2015
    Assignee: Lucidity Lights, Inc.
    Inventors: John R. Goscha, Walter Peter Lapatovich, James N. Lester, David Alan Goodman, Zeng Zhi Yu, David Wentzel
  • Patent number: 9075093
    Abstract: The invention relates to gas-discharge electrical instrumentation technology. The device for measuring electromagnetic field intensity comprises a measuring instrument for recording the glow of a gas discharge and a gas-discharge chamber that is formed between electrodes 1 and 2 separated by a dielectric 3. The electrode 1 is cylindrical, while the electrode 2 is in the form of a disk. The electrodes 1 and 2 are coupled to an electrical voltage source, wherein a capacitive element in the form of a pair comprising an antenna 5 and a connection to ground 6 is incorporated into the line coupling the cylindrical electrode 1 to the electrical voltage source. A capacitor 7 with variable capacitance is incorporated into the line coupling the cylindrical electrode 1 to the antenna 5. The technical result consists in providing the possibility of detecting a useful signal in a wide frequency range.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: July 7, 2015
    Inventor: Konstantin G. Korotkov
  • Patent number: 9006624
    Abstract: An induction heating system includes an induction heating coil operable to inductively heat a load with a magnetic field, a detector for detecting a current feedback signal corresponding to a current flowing through the induction heating coil, and a controller for detecting a switching transient in the current feedback signal and determining a resonant frequency of the system based on a characteristic of the switching transient.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: April 14, 2015
    Assignee: General Electric Company
    Inventors: Daniel Brosnan, Mariano Filippa, Kresimir Odorcic
  • Patent number: 8981663
    Abstract: An electrodeless plasma lamp and a method of generating light are described. The lamp may comprise a lamp body including a dielectric material having a relative permittivity greater than 2. A lamp drive circuit is coupled to the lamp body and configured to provide radio frequency (RF) power to the lamp body. A bulb containing a fill is positioned proximate the lamp body. The fill forms a plasma when the RF power is coupled to the fill from the lamp body. A lamp drive circuit including modulation control circuit is provided to control modulation of a frequency of the RF power across a frequency band. The circuit may be configured to provide RF power across a frequency band around a resonant frequency for the lamp body to reduce peak amplitude and electro-magnetic interference while maintaining average power to the plasma.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: March 17, 2015
    Assignee: Luxim Corporation
    Inventor: Gregg Hollingsworth
  • Patent number: 8957593
    Abstract: This disclosure is directed to devices and methods for generating light with electrode-less plasma lamps. More particularly, the present invention provides plasma lamps driven by a radio-frequency source without the use of electrodes inside the bulb, and a pulse-width modulation device that provides RF power regulation, and related methods. The bulb comprises gaseous material with metal halides and/or light emitters that, when powered, substantially stays in an arc shape state. The switching pulse-width modulation device is operable at specific modulation frequencies, duty cycles, and durations to stabilize or control the arc state/mode, which enables consistent and high efficiencies.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: February 17, 2015
    Assignee: TOPANGA USA, Inc.
    Inventors: Timothy Brockett, David Schmelzer, Aric Dorschner, Jacob Portukalian, Mehran Matloubian
  • Patent number: 8947009
    Abstract: An electronic ballast circuit includes a power factor correction circuit, a control and amplifier circuit, a ballast controller circuit and a ballast driver circuit. The ballast driver circuit includes a resonant circuit that connects to a lamp and a strike voltage limiter circuit that regulates the behavior of the resonant circuit. An overcurrent sensor circuit may be included to indirectly the control the ballast controller circuit via the control and amplifier circuit. The strike voltage limiter circuit uses varistors to change the resonant frequency of the resonant circuit to limit the voltage to the lamp.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: February 3, 2015
    Assignee: Genesys Global, LLC
    Inventor: Steve McNay
  • Patent number: 8901842
    Abstract: An induction RF fluorescent lamp includes a lamp envelope with a re-entrant cavity both covered on a partial vacuum side with phosphor and filled with a working gas mixture; a power coupler on the non-vacuum side of said re-entrant cavity comprising a ferromagnetic core overwound with at least one turn of an electrical conductor; an electronic ballast, wherein the ballast converts mains frequency voltage and current to a power coupler frequency voltage and current, the electronic ballast providing the voltage and current to the power coupler through at least two of a plurality of electrical terminals of the electronic ballast; a capacitor electrically connected between the ferromagnetic core and at least one of the plurality of electrical terminals of the electronic ballast, wherein the magnitude of the impedance of the capacitor is high at the mains frequency and the magnitude of the impedance of that same capacitor is low at the operating frequency of the RF fluorescent lamp.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: December 2, 2014
    Assignee: Lucidity Lights, Inc.
    Inventor: Victor D. Roberts
  • Patent number: 8884518
    Abstract: An electrode-less plasma lamps, comprising generally of a bulb containing a gas-fill that is excited to produce light using radio-frequency (RF) energy. In specific embodiments, the use of grounded coupling-elements with integrated bulb assemblies simplifies manufacturability, improves resonant frequency control, and enables the use of solid, partially filled, and hollow lamp bodies.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: November 11, 2014
    Assignee: Topanga USA, Inc.
    Inventors: Frederick M. Espiau, Timothy J. Brockett, Mehran Matloubian
  • Patent number: 8860323
    Abstract: An electrodeless plasma lamp is provided. The lamp includes a conductive enclosure including a dielectric material (e.g., air) and a bulb containing a fill to form a light emitting plasma. A radio frequency (RF) power source is coupled into to the enclosure. At least one conductive applicator applies power from the enclosure to the bulb and at least one limped inductive element is coupled between the RF feed and applicator. The lumped inductive element may be a helically wound coil. In an example embodiment, the lamp includes first and second lumped inductive elements. The first and second lumped inductive elements may extend from opposed end walls of the enclosure. The first lumped inductive element may be connected to a first conductive applicator located proximate a first end of the bulb and the second lumped inductive element may be connected to a second conductive applicator located proximate a second end of the bulb.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: October 14, 2014
    Assignee: Luxim Corporation
    Inventor: Marc DeVincentis
  • Patent number: 8860311
    Abstract: A lighting apparatus includes an emitter having a plasma bulb and a driver which provides an RF signal to the emitter to drive the plasma bulb. The lighting apparatus may be used for various applications including illuminating plants and organisms in an aquatic environment, growing plants, facility lighting, and other applications.
    Type: Grant
    Filed: December 29, 2012
    Date of Patent: October 14, 2014
    Assignee: Stray Light Optical Technologies
    Inventors: Gerald W. Rea, Robert A. Drake
  • Patent number: 8847488
    Abstract: A plasma lamp apparatus. The apparatus can have a bulb coupled to at least the first end of a support member that is provided within a housing having an interior and exterior region. The housing can also have a first coupling member disposed within the housing, and a gap can be provided between the first coupling member and the support member. Additionally an rf source can be coupled to the support member. A fill material, which can include at least a first volume of a rare gas, a first amount of a first metal halide, a second amount of a second metal halide, and a third amount of mercury, can be spatially disposed within the bulb.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: September 30, 2014
    Assignee: Topanga USA, Inc.
    Inventor: Douglas A. Doughty
  • Patent number: 8836219
    Abstract: A method and system for powering gas-filled lamps using radio and/or microwave frequencies is disclosed. The method and system may include a gas-filled lamp, an antenna positioned proximal to the gas-filled lamp, a conductive element surrounding the gas-filled lamp, and a power source connector coupled to the antenna.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: September 16, 2014
    Inventors: Elizabeth Marie Mako, Frederick Michael Mako
  • Patent number: 8796934
    Abstract: The invention relates to a plasma source with an oscillator having an active element and a resonator connected to the active element. The resonator has a hollow body, a gas inlet, a gas outlet arranged at a distal end of the hollow body about a longitudinal axis of the hollow body, and a coil arranged along the longitudinal axis of the hollow body, said coil having an effective length of one quarter of a wavelength at a resonant frequency of the resonator. A distal end of the coil is arranged relative to the gas outlet such that a plasma section can form between the distal end of the coil serving as a first plasma electrode and the gas outlet of the hollow body serving as a second plasma electrode. At a proximal end of the hollow body, the coil is lead out of the interior of the hollow body through an electrically contact-free feed-through, and a proximal end of the coil contacts the hollow body at its external side.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: August 5, 2014
    Assignee: Forschungsverbund Berlin E.V.
    Inventors: Silvio Kuehn, Roland Gesche, Horia-Eugen Porteanu
  • Patent number: 8766539
    Abstract: An electrode-less plasma lamp, comprising generally of a bulb containing a gas-fill and light emitter(s) that is excited to produce light using radio-frequency (RF) energy. The present lamp includes compact air resonators/waveguides that use grounded coupling-elements with integrated bulb assemblies to reduce the size of the resonator and improve the performance of the lamp as well as reduce cost and simplify manufacturability.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: July 1, 2014
    Assignee: Topanga USA, Inc.
    Inventors: Frederick M. Espiau, Timothy J. Brockett, Mehran Matloubian, Douglas A. Doughty