With Electromagnetic Wave Radiation Preventing Or Shielding Means Patents (Class 315/85)
  • Patent number: 10856379
    Abstract: The disclosure relates in general to privacy glass, and more particularly, to a privacy glass system containing a light source, a diffuser, and a control and power circuitry combined in such a fashion as to make the level of visibility through the privacy glass system controllable.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: December 1, 2020
    Assignee: LuxTech, LLC
    Inventor: Sean R. Darras
  • Patent number: 10720769
    Abstract: An example power supply for supplying electrical power to an electronic device includes an AC to DC converter, power factor correction (PFC) circuitry, and a controller. The AC to DC converter is configured to convert an input AC power signal into a DC power signal. The PFC circuitry is configured to correct a power factor of the DC power signal. The controller is configured to monitor an amount of correction (?) being applied to the DC power signal by the PFC circuitry and to shut down supply of power to the electronic device in response to ? being within a first threshold of zero degrees for a second threshold amount of time.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: July 21, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventor: William James Walker
  • Patent number: 10699677
    Abstract: A display controller and method for performing the same operations are described. In on embodiment, the display controller comprises a spread spectrum clock (SSC) modulator having a first input coupled to receive a non-SSC modulated clock and operable to generate a SSC modulated clock in response to the non-SSC modulated clock, a video data transfer portion coupled to receive the SSC modulated clock and operable to output data for display in response to the SSC modulated clock, and a second portion coupled to receive the non-SSC modulated clock.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: June 30, 2020
    Assignee: INTEL CORPORATION
    Inventors: Nobuyuki Suzuki, Robert J. Johnston
  • Patent number: 10594102
    Abstract: A rotary connector device for making a plurality of electrical connections includes a male component having a surface defined by outer sidewalls of alternating male conducting rings and separate male insulating rings. Each of the male conducting rings is connectable to a corresponding male component electrical line. A female component has a central bore configured to retain a series of alternating female conductor rings and separate female insulating rings. Each of the female conducting rings makes direct or indirect conductive contact with a corresponding male conducting ring when the mating arrangement is made. Each of the female conducting rings is connectable to a corresponding female component electrical line. The male conducting rings and the female conducting rings, or separate conducting components associated therewith, have contact surfaces that engage each other in a latching mechanism when the mating arrangement is made.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: March 17, 2020
    Assignee: EXTENSIVE ENERGY TECHNOLOGIES PARTNERSHIP
    Inventors: F. Dale Pratt, Kenneth A Lambe
  • Patent number: 10356863
    Abstract: A method of controlling an LED driver can include: generating a first comparison signal using a first reference voltage, the first comparison signal having a duty cycle in accordance with an alternating current input voltage generated by a transformer of the LED driver, and representing an operation frequency of an input source; generating a conversion voltage signal by an averaging operation of the first comparison signal with a time constant that is greater than a switching period of an electronic transformer; generating a second comparison signal by comparing the conversion voltage signal against a second reference voltage; and determining whether the transformer is the electronic transformer or a power frequency transformer based on the second comparison signal.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: July 16, 2019
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Xiaoqiang Xu, Jianxin Wang
  • Patent number: 10342084
    Abstract: In some implementations, a device includes first terminals to couple with a first battery arranged to supply power to the device, including a positive terminal and a negative terminal. The device includes a first winding and a second winding that are arranged to be inductively coupled. The device includes a transistor. The first winding and the second winding are coupled to the positive terminal with opposite polarity. The device includes a light emitting diode (LED) and second electrical contacts to couple with a second battery to be charged by the device. The device is arranged to couple the LED and the second battery in series with each other, with the LED and second battery being coupled in parallel with the second winding. The LED is arranged to be reverse biased with respect to the first battery and the second battery.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: July 2, 2019
    Assignee: New Energies & Alternative Technologies, Inc.
    Inventor: Issac Ananda Barbosa
  • Patent number: 10194499
    Abstract: A lighting device includes light emitting element groups (HSB) including a light emitting element group (HS2) that emits light when being applied with a voltage (VH2), and a light emitting element group (HS12) that emits light when being applied with a voltage (VH12) higher than VH2, the light emitting element groups (HSB) emitting light when being applied with a voltage equal to or higher than a voltage (VHa); an IC1 including a light emission control unit (HC1) arranged to cause light emission of a light emitting element group (HS) if a voltage (Vk) is higher than VHa, and to stop the light emission if Vk is lower than the same; and an IC2 including a light emission control unit (HC2) arranged to cause light emission of a group (HSa) if Vk is higher than VHa, and to turn off the group (HSa) if Vk is lower than the same.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: January 29, 2019
    Assignee: Rohm Co., Ltd.
    Inventors: Noboru Takizawa, Masaaki Nakayama
  • Patent number: 10054284
    Abstract: The present invention relates to a lighting apparatus for a vehicle, including: a bulb which generates light; a socket in which the bulb is mounted; a reflector which has a socket coupling unit to which the socket is coupled, allows the bulb to be inserted into the reflector, and reflects forward light generated by the bulb; and an electromagnetic shield which is disposed between the socket and the socket coupling unit, and has a bulb through hole which the bulb penetrates, in which first ground contact protrusions, which protrude toward a center of the bulb through hole and come into ground contact with the socket and the socket coupling unit, are formed on a portion of the electromagnetic shield where the bulb through hole is formed.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: August 21, 2018
    Assignee: HYUNDAI MOBIS Co., Ltd.
    Inventor: Jun Hee Mun
  • Patent number: 9986608
    Abstract: The lighting system includes a voltage source for generating a constant direct current adapted to supply lighting modules, a number n of electronic switches, a current sensor connected in series with the voltage source to detect a measurement signal indicative of the current provided by the voltage source, and a control unit. The control unit generates the drive signals for the electronic switches. It varies the drive signals, such that: in a first instant, all lighting modules are connected to the voltage source; and during a sequence of instants, each time a different set of lighting modules is connected to the voltage source. It then determines the current flowing through all lighting modules as a function of the measurement signal detected in the first instant, and determines the currents which flow through the various lighting modules as a function of the measurement signals detected during the sequence of instants.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: May 29, 2018
    Assignee: OSRAM GmbH
    Inventors: Enrico Raniero, Francesco Angelin
  • Patent number: 9756691
    Abstract: A modulation engine for a light-emitting-diode (LED) driver is described that includes an output port, a charge current source, a discharge current source, and an output control unit. The output control unit is configured to generate a modulation signal (e.g., a pulse-width-modulation signal) at the output port by at least alternating, based on a duty cycle of the modulation signal, between coupling the charge current source to the output port and the discharge current source to the output port to linearly shape the charge at the output port in accordance with the duty cycle.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: September 5, 2017
    Assignee: Infineon Technologies AG
    Inventors: Fabrizio Cortigiani, Maurizio Galvano
  • Patent number: 9723670
    Abstract: A power supply device includes a power conversion module and a power regulating module. The power conversion module is configured to convert an AC electric power into a DC electric power. The power regulating module includes a microprocessor, a voltage-dividing resistor, a constant-voltage regulator, and a constant-current regulator. The voltage-dividing resistor is electrically connected to the setting resistor and the microprocessor. The constant-voltage regulator is electrically connected to the power conversion module, the dividing resistor, and the setting resistor; The constant-current regulator is electrically connected to the power conversion module and the microprocessor.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: August 1, 2017
    Assignee: Salcomp Taiwan Co., Ltd.
    Inventors: Ying-Chu Lin, Hung-Yi Shu
  • Patent number: 9559406
    Abstract: An electronic device has antennas formed from cavity antenna structures. The electronic device may have a metal housing. The metal housing may have an upper housing in which a component such as a display is mounted and a lower housing in which a component such as a keyboard is mounted. Hinges may be used to mount the upper housing to the lower housing for rotation about a rotational axis. Cavity antennas may be formed in a clutch barrel region located between the hinges and running along the rotational axis. A flexible printed circuit may be formed between the cavity antennas. Each cavity antenna may have a first end that is adjacent to one of the hinges and a second end that is adjacent to the flexible printed circuit. Cavity walls for the cavity antennas may be formed from metal housing structures such as metal portions of the lower housing.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: January 31, 2017
    Assignee: Apple Inc.
    Inventors: Jerzy Guterman, Qingxiang Li, Mattia Pascolini
  • Patent number: 9380670
    Abstract: An LED lamp comprises one or more LEDs, an inductive element coupled to an input voltage source and the one or more LEDs, and a switch coupled to the inductive element. A first current detector is coupled between the input voltage source and a ground node of the LED lamp, such that a current detected by the first current detector is proportional to a bulk voltage across the input voltage source. A second current detector is coupled between the inductive element and the ground node, such that current detected by the second current detector is proportional to a drain voltage across the switch. A switch controller controls the switch based on a feedback signal indicative of a voltage across the inductive element, which is generated based on a difference between the current detected by the second current detector and the current detected by the first current detector.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: June 28, 2016
    Assignee: Dialog Semiconductor Inc.
    Inventors: Chenglong Zhang, John William Kesterson, Chin Li, Ping Lo, Chuanyang Wang
  • Patent number: 9373940
    Abstract: A spark plug having an insulator with a through hole formed therein in a direction of an axis, a center electrode disposed in a front side of the through hole, a metal terminal disposed in a rear side of the through hole, an electrical connection part arranged in the through hole to establish electrical connection between the center electrode and the metal terminal and a metal shell holding therein the insulator. The electrical connection part has a conductor including a conductive material and at least one kind of Fe-containing oxide material. The Fe-containing oxide material contains at least FeO. The conductor satisfies a relationship of 0.06?S1/(S1+S2)?0.46 where, in a cross section taken along the axis, S1 is an area occupied by the conductive material and S2 is an area occupied by the Fe-containing oxide material.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: June 21, 2016
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Katsuya Takaoka, Kazuhiro Kurosawa, Kuniharu Tanaka, Haruki Yoshida, Hirokazu Kurono, Toshitaka Honda
  • Patent number: 9131565
    Abstract: Various embodiments of the invention allow LED lamp fixtures to pass EMI testing irrespective of whether the lamp fixture is operated by a magnetic transformer or an electric transformer without causing input current waveform distortion and without defeating transformer compatibility. In certain embodiments, the type of transformer is determined based on detecting characteristic voltage waveforms and based that determination an EMI filter is automatically switched in and out of the lamp circuit.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: September 8, 2015
    Assignee: Maxim Integrated Products, Inc.
    Inventor: Suresh Hariharan
  • Publication number: 20150145412
    Abstract: A lamp (10) is described comprising a burner (14) fixed to a lamp base (12). The lamp base (12) includes a top wall oriented towards the burner (14). Within the top wall, an opening (28) is provided. The lamp base (12) further comprises an insulation chamber (42) where an electrical component, e. g. a transformer (54), is embedded within an insulation compound (43). In order to prevent possibly spilled insulation compound from leaking through the opening (28), a raised retention wall (46) is provided around the opening.
    Type: Application
    Filed: April 12, 2013
    Publication date: May 28, 2015
    Applicant: KONINKLIJKE PHILIPS N..V.
    Inventors: Lars Dabringhausen, Juergen Gerhard Mertens, Anton Duschl
  • Publication number: 20150129131
    Abstract: A semiconductor processing apparatus includes an electromagnetic generator, an analog signal module, and an electromagnetic shield. The electromagnetic generator is capable of generating an electromagnetic field. The analog signal module is located adjacent to the electromagnetic generator and capable of generating an analog signal. The electromagnetic shield is capable of shielding the analog signal module. The electromagnetic shield includes a plurality of covering plates. Each of the covering plates and the analog signal module are apart from at least a predetermined distance.
    Type: Application
    Filed: November 14, 2013
    Publication date: May 14, 2015
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Chia-Ching LI, Wei-Hao WU, Li-Hsiang CHAO, Bo-Wei WANG, Yen-Yu CHEN, Wei ZHANG
  • Publication number: 20150097484
    Abstract: A dimmable alternating current (AC) driven light emitting diode (LED) illuminating apparatus including a TRIAC dimmer configured to perform a dimming control using a phase control.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 9, 2015
    Inventors: Keon Young LEE, Chung Hoon Lee
  • Publication number: 20150061494
    Abstract: A protection circuit for lighting drivers is provided, wherein a lighting driver is coupled to an AC voltage source. The protection circuit comprises a loading circuit, coupled to the AC voltage source and operable to load it with a loading current, and a monitoring and control (M&C) circuit. The M&C circuit is coupled to the AC voltage source for detecting interference pulses thereon and causes the loading circuit to load the AC voltage source with the loading current during a certain loading time starting upon detecting an interference pulse, indiscriminately of the interference pulse polarity. The protection circuit thereby prevents the AC source current from dropping to zero in response to the interference pulse. When the AC voltage source comprises a lighting dimmer, preventing the current from dropping to zero prevents cutout of the lighting dimmer due to an interference pulse that causes a momentary drop of the AC voltage.
    Type: Application
    Filed: September 1, 2014
    Publication date: March 5, 2015
    Applicant: Magnitude Lighting Transformers Inc.
    Inventor: Dror MANOR
  • Patent number: 8963445
    Abstract: The invention relates to a driver circuit for light sources, in particular LEDs, comprising a selection circuit, comprising at least one selection circuit element defined by an electric quantity having one of a plurality of pre-established electric quantity levels, and an electronic control unit (ECU), comprising a reference circuit, suitable for providing a reference electric quantity, and a regulation circuit of the driver current, suitable for establishing a driver current of the light sources on the basis of said reference electric quantity.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: February 24, 2015
    Assignee: Automotive Lighting Italia S.p.A.
    Inventors: Davide Baccarin, Andrea Englaro
  • Publication number: 20150042227
    Abstract: A bi-level current configurable driver is provided. The driver includes a feedback circuit, a driver circuit providing a driver signal to a half bridge inverter, and a step-dim interface coupled to a first alternating current input line, a second alternating current input line, and a neutral line, providing voltage to the driver circuit. The driver also includes a first feedforward circuit coupled to the step-dim interface, where the first feedforward circuit receives a first signal from the step-dim interface based on the states of the first alternating current input line, the second alternating current input line, and the neutral line. In a first state, the driver provides full current to a load, and in a second state, the driver provides less than full current to the load.
    Type: Application
    Filed: June 24, 2014
    Publication date: February 12, 2015
    Applicant: OSRAM SYLVANIA INC.
    Inventors: Nitin Kumar, Markus Ziegler
  • Patent number: 8941304
    Abstract: A fast starting dimmable induction RF fluorescent lamp comprising a dimming facility enabling the induction RF fluorescent lamp to dim in response to a signal from an external dimming device, 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: January 27, 2015
    Assignee: Lucidity Lights, Inc.
    Inventors: John R. Goscha, Victor D. Roberts, Walter Peter Lapatovich, David Alan Goodman, David Wentzel
  • Patent number: 8917021
    Abstract: A power supply apparatus of an embodiment includes a first filter, a second filter, and a switching power supply. The first filter and the second filter attenuate a common mode current to a level lower than a normal mode current. The switching power supply is connected between the first filter and the second filter, and supplies electric power to an illumination load via the second filter.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: December 23, 2014
    Assignee: Toshiba Lighting & Technology
    Inventors: Yuji Takahashi, Hirokazu Otake, Noriyuki Kitamura, Hiroshi Akahoshi
  • Patent number: 8872426
    Abstract: An apparatus for powering and TRIAC dimming of a gas discharge lamp includes an electronic ballast for powering a gas discharge lamp from a TRIAC based dimmer connected to an AC line, an EMI filter for protecting the AC line from EMI generated by the ballast and the lamp, a DC bus without a smoothing electrolytic capacitor, a resonant DC-to-AC inverter connected to the DC bus for powering the gas discharge lamp with a high frequency current, wherein an auxiliary DC-to-DC power supply input is connected to the DC bus and a first resonant tank having in series a first resonant inductor and a first resonant capacitor, wherein the gas discharge lamp is connected in parallel to the resonant capacitor.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: October 28, 2014
    Assignee: Lucidity Lights, Inc.
    Inventors: Felix I. Alexandrov, James N. Lester, Jakob Maya
  • Publication number: 20140312768
    Abstract: A light module with linear LED serial group drive device comprises an AC input rectifier unit having an input end coupled to an AC Power to convert an AC half-wave voltage signal into a DC full-wave voltage signal for output, and an intelligent control having a protection unit. when the input voltage is higher than the set start voltage of the LED serial group, the corresponding constant current control drive circuit switch is turned on immediately by the intelligent control to control the power, luminous flux, and power factor of the LED serial light module for achieving stable power output of LED light source. Moreover, the present invention without transformers, inductors and other magnetic components has thin thickness and small volume to improve the conventional problems.
    Type: Application
    Filed: March 10, 2014
    Publication date: October 23, 2014
    Applicant: SUNPOWER GRAND HOLDINGS PTE, LTD.
    Inventors: YU-CHIEN WU, HSIEN-JUNE CHEN
  • Publication number: 20140312769
    Abstract: Method, apparatus and system for efficient driving a lighting means. In accordance with an embodiment of the present invention, there is provided a synchronous load for a lighting system, wherein the lighting system is fed by an AC supply that is potentially produced by a dimmer. The synchronous load is configured to load the AC supply only if the AC supply is found to be actually produced by a dimmer. In this case, the loading period comprises only the times when the AC supply voltage is lower than a given threshold and when current oscillation occurs.
    Type: Application
    Filed: March 11, 2014
    Publication date: October 23, 2014
    Applicant: Magnitude Lighting Transformers Inc.
    Inventor: Dror MANOR
  • Publication number: 20140300274
    Abstract: Disclosed are various embodiments of low cost high quality LED (Light Emitting Diode) retrofit lamp devices capable of operating in a wide range of power and to supersede conventional lighting devices such as incandescent, halogen, sodium or fluorescent lamps. The disclosed embodiments include various LED lamp retrofit apparatuses that maximize the electro-mechanical-optical compatibility of seven interactive systems, such as: LEDs, LED Panel, Supply Adaptor, Housing, Lens/diffuser Shield, In/Out Electrical Wiring an LED driver. LED lamp retrofit apparatuses include incandescent, halogen, fluorescent, and sodium lamps.
    Type: Application
    Filed: June 16, 2014
    Publication date: October 9, 2014
    Inventor: Beniamin Acatrinei
  • Publication number: 20140265844
    Abstract: An LED driver with current limiter and output ripple reduction.
    Type: Application
    Filed: March 18, 2014
    Publication date: September 18, 2014
    Inventors: Laurence P. Sadwick, William B. Sackett
  • Publication number: 20140246976
    Abstract: The present invention relates to a controlling circuit and controlling method for an LED driver implemented as a flyback topology. The controlling circuit may be at a primary side of a transformer of the LED driver, and include a sampling circuit, an on time sensing circuit of an output diode, a regulating signal generator, and a PWM controller. The sampling circuit may generate a sampling signal indicating output current by sampling at the primary transformer side. The on time sensing circuit can detect an on time of the output diode. The regulating signal generator can generate a regulating signal by regulating the sampling signal, a voltage reference, and the on time of the output diode. The PWM controller may generate a controlling signal to control operation of a switching device of the LED driver to maintain a substantially constant output current in accordance with the regulating signal.
    Type: Application
    Filed: May 12, 2014
    Publication date: September 4, 2014
    Applicant: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventor: Shenglun Chen
  • Patent number: 8823266
    Abstract: A dimming LED lamp having an LED light, an EMI circuit, a power-factor correction circuit, a digital switching power supply circuit, a dimming control circuit, a power supply circuit, a signal acquisition circuit, an MCU microcontroller, a RF wireless transmitter, a RF receiver circuit, an EEPROM memorizer, and a fan circuit. The brightness of the dimmable LED lamp can be dimmed through any conventional incandescent dimmers, or through any ordinary key switch, or through a wireless transmitter. The wireless transmitter can also remotely turn on the lamps or turn off the lamps, at the same time the LED lamp also has the function of brightness saving. The fan circuit uses air convection to cool the LED which has the advantages of aesthetically pleasing appearance, small size, light weight, low cost, long life, and good cooling effect.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: September 2, 2014
    Assignee: Ningbo Huadian Envirotech Co., Ltd.
    Inventor: Bing Qin
  • Publication number: 20140239810
    Abstract: A power factor correction converter in a buck-boost configuration may include a set-up circuit configured to supply an input voltage, a buck transistor connected to the set-up circuit, and configured to receive a current from the diode bridge, a first diode connected to the buck transistor, a boost transistor, a resistor connected to the boost transistor, a coil that connects the buck transistor and the boost transistor, a buck-boost PFC regulator connected to the set-up circuit, and configured to regulate a time pattern of the on/off status of the first transistor and the second transistor synchronously, a second diode connected to the coil and the boost transistor, and configured to output a first level voltage, a capacitor connected to the second diode and a load connected to the second diode.
    Type: Application
    Filed: February 28, 2013
    Publication date: August 28, 2014
    Applicant: Asahi Kasei Microdevices Corporation
    Inventors: Fernando Ramon MARTIN-LOPEZ, Gabriel C. GAVRILA, Takahiro UMEKI
  • Patent number: 8810133
    Abstract: The invention relates to illumination, especially to a grid for illumination apparatus. This invention provides a grid (100) for attenuating electromagnetic radiation from a light source. The grid comprises a plurality of baffles (110), each baffle being electro conductive, wherein the plurality of baffles are configured to form a plurality of cells (120), each cell being formed as a waveguide so as to attenuate the electromagnetic radiation from the light source. In this way, the electromagnetic radiation from the light source can be reduced or prevented so as to decrease the danger to users.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: August 19, 2014
    Assignee: Koninklijke Philips N.V.
    Inventors: Yong Liu, Kun-Wah Yip, Di Lou
  • Patent number: 8796931
    Abstract: A current regulating LED strobe drive circuit is disclosed for efficiently producing a LED strobe that is consistent in both intensity and color. The circuit may include an inrush control for limiting an amount of current that is allowed to flow through the drive circuit upon activation, an energy storage component for storing and supplying power for flashing a LED, a current regulator electrically coupled to the energy storage component for sensing and regulating a current supplied by the energy storage element, a LED electrically coupled to the current regulator, and a flash control element electrically coupled to the current regulator for communicating a flash pulse signal that provides a pulsed pattern with which current is allowed to flow from the current regulator to the LED. The circuit may further include an output control having an operator interface for allowing an operator to define a desired light output level.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: August 5, 2014
    Assignee: Tyco Fire & Security GmbH
    Inventor: Kenneth E. Savage, Jr.
  • Publication number: 20140184070
    Abstract: A luminaire is provided. The luminaire includes a housing, at least one light source, and a light control module. The housing has a cavity for embedding the light control module and another cavity for embedding the light sources. The light control module includes a current control unit, at least one switch unit, a process unit, and a printed circuit board. The current control unit is used to provide DC current. The at least one switch unit is used to enable the current control unit to selectively provide a DC current to the at least one light source in accordance with at least one switch unit control signal. The process unit is used to adjust the DC current outputted by the current control unit.
    Type: Application
    Filed: May 8, 2013
    Publication date: July 3, 2014
    Applicant: Radiant Opto-Electronics Corporation
    Inventors: Cheng-Lin Lu, Nick Lin, Ko-Yu Hsiao
  • Publication number: 20140175979
    Abstract: A light emitting plasma lighting apparatus includes at least one conductive RF shielding baffle located in a reflector housing between an emitter and a window. The at least one RF shielding baffle includes a planar body portion aligned generally perpendicular to an outer surface of the plasma bulb to minimize interference with light emitted from the plasma bulb. The at least one RF shielding baffle is grounded to absorb a portion of an RF field emitted by the emitter.
    Type: Application
    Filed: March 14, 2013
    Publication date: June 26, 2014
    Inventor: Stray Light Optical Technologies
  • Publication number: 20140167609
    Abstract: There are provided a light driving apparatus capable of being commonly used in various types of dimmers, and a driving method therefor. The light driving apparatus includes: a driving unit supplying driving power to a light emitting device according to controlling to drive the light emitting device; and a general-purpose dimming controlling unit controlling dimming of the light emitting device by converting a range of a brightness control signal of an external dimmer into a first voltage range according to a preset ratio to control the supply of power from the driving unit.
    Type: Application
    Filed: June 27, 2013
    Publication date: June 19, 2014
    Inventors: Byoung Woo RYU, Kyu Tae SEO, Dae Hoon CHOI, Ki Hong KIM, Min Jin KIM
  • Publication number: 20140159579
    Abstract: A lighting module includes a power reception unit configured to receive alternating current (AC) power from an external power source, a light emitting diode (LED) array including a plurality of LEDs, and a driving circuit unit configured to supply operational power to the plurality of LEDs, and control operation of the plurality of LEDs.
    Type: Application
    Filed: August 14, 2013
    Publication date: June 12, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: HYE JUNG SEOL
  • Publication number: 20140145614
    Abstract: An electronic ballast for driving a gas discharge lamp includes an EMI filter, a bridge rectifier coupled to a DC bus without a conventional electrolytic capacitor, a passive valley fill circuit built as a network having 4 charge/discharge energy storage capacitors and 9 diodes (4C9C), and a resonant DC to AC high frequency inverter for powering gas discharge lamp. The 4C9D circuit divides the rectified peak voltage by four and the low output voltage of the circuit is used to provide continuous lamp operation. The result is a ballast having substantially improved power factor, total harmonic distortion, and current crest factor. The electronic ballast is provided with a dimming capability from a TRIAC based wall dimmer.
    Type: Application
    Filed: March 15, 2013
    Publication date: May 29, 2014
    Applicant: Lucidity Lights, Inc.
    Inventor: Felix I. Alexandrov
  • Publication number: 20140145619
    Abstract: An induction RF fluorescent lamp comprising a dimming device load control facility enabling the induction RF fluorescent lamp to provide for electrical loads required for the proper operation of an external control dimming device, the dimming device load control facility controlling a switched electrical load switched in and out of connectivity within the electronic ballast to provide a load for the external dimming device.
    Type: Application
    Filed: September 24, 2013
    Publication date: May 29, 2014
    Applicant: Lucidity Lights, Inc.
    Inventors: John R. Goscha, Victor D. Roberts, Thomas Farkas
  • Publication number: 20140145617
    Abstract: A dimmable induction RF fluorescent light bulb comprising a power coupler with conductive material in contact with the power coupler to reduce extraneous electromagnetic radiation emanating from the power coupler.
    Type: Application
    Filed: September 23, 2013
    Publication date: May 29, 2014
    Applicant: Lucidity Lights, Inc.
    Inventors: John R. Goscha, Walter Peter Lapatovich, Zeng Zhi Yu, James N. Lester
  • Publication number: 20140145620
    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: Application
    Filed: September 24, 2013
    Publication date: May 29, 2014
    Applicant: Lucidity Lights, Inc.
    Inventors: John R. Goscha, Walter Peter Lapatovich, David Alan Goodman, David Wentzel
  • Publication number: 20140145615
    Abstract: A burst-mode dimmable induction RF fluorescent light bulb 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 a dimmable induction RF fluorescent light bulb that includes a bulbous portion, a tapered portion, an electronics portion, and a screw base, creating an external look that is similar to the profile of an ordinary incandescent light bulb.
    Type: Application
    Filed: August 16, 2013
    Publication date: May 29, 2014
    Applicant: Lucidity Lights, Inc.
    Inventors: John R. Goscha, Victor D. Roberts, Luke Christopher Raymond, Juan Manuel Rivas-Davila
  • Publication number: 20140145613
    Abstract: An apparatus for powering and TRIAC dimming of a gas discharge lamp includes an electronic ballast for powering a gas discharge lamp from a TRIAC based dimmer connected to an AC line, an EMI filter for protecting the AC line from EMI generated by the ballast and the lamp, a DC bus without a smoothing electrolytic capacitor, a resonant DC-to-AC inverter connected to the DC bus for powering the gas discharge lamp with a high frequency current, wherein an auxiliary DC-to-DC power supply input is connected to the DC bus and a first resonant tank having in series a first resonant inductor and a first resonant capacitor, wherein the gas discharge lamp is connected in parallel to the resonant capacitor.
    Type: Application
    Filed: November 26, 2012
    Publication date: May 29, 2014
    Applicant: Lucidity Lights, Inc.
    Inventors: Felix I. Alexandrov, James N. Lester, Jakob Maya
  • Publication number: 20140145621
    Abstract: A fast starting dimmable induction RF fluorescent lamp comprising a dimming facility enabling the induction RF fluorescent lamp to dim in response to a signal from an external dimming device, and with structures within the bulb envelope that facilitate rapid luminous development during a turn-on phase.
    Type: Application
    Filed: September 24, 2013
    Publication date: May 29, 2014
    Applicant: Lucidity Lights, Inc.
    Inventors: John R. Goscha, Victor D. Roberts, Walter Peter Lapatovich, David Alan Goodman, David Wentzel
  • Publication number: 20140145616
    Abstract: An induction RF fluorescent light bulb comprising a power coupler with a ferromagnetic core and conductive material in contact with the ferromagnetic core to reduce extraneous electromagnetic radiation emanating from the power coupler, where the RF fluorescent light bulb has an external appearance similar to an ordinary A19 incandescent light bulb.
    Type: Application
    Filed: September 3, 2013
    Publication date: May 29, 2014
    Applicant: Lucidity Lights, Inc.
    Inventors: John R. Goscha, Walter Peter Lapatovich, Zeng Zhi Yu, James N. Lester
  • Publication number: 20140145618
    Abstract: A dimmable induction RF fluorescent light bulb 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 light bulb that includes a bulbous portion, a tapered portion, an electronics portion, and a screw base, creating an external look that is similar to the profile of an ordinary incandescent light bulb.
    Type: Application
    Filed: September 24, 2013
    Publication date: May 29, 2014
    Applicant: Lucidity Lights, Inc.
    Inventors: John R. Goscha, Victor D. Roberts
  • Publication number: 20140139107
    Abstract: Various embodiments of the invention allow LED lamp fixtures to pass EMI testing irrespective of whether the lamp fixture is operated by a magnetic transformer or an electric transformer without causing input current waveform distortion and without defeating transformer compatibility. In certain embodiments, the type of transformer is determined based on detecting characteristic voltage waveforms and based that determination an EMI filter is automatically switched in and out of the lamp circuit.
    Type: Application
    Filed: April 15, 2013
    Publication date: May 22, 2014
    Applicant: Maxim Integrated Products, Inc.
    Inventor: Maxim Integrated Products, Inc.
  • Publication number: 20140111088
    Abstract: The present invention relates to an electromagnetically-countered display system including at least one wave source and at least one counter unit, where such a wave source irradiates harmful electromagnetic waves and the counter unit emits counter electromagnetic waves for countering the harmful waves therewith. More particularly, the present invention relates to various counter units for the electromagnetically-countered display system and to various mechanisms to counter the harmful waves with the counter units, e.g., by matching configurations of the counter units with those of the wave sources, by matching wavefronts of the harmful waves with those the counter waves, and so on. The present invention also relates to various methods of countering the harmful waves with such counter waves by source and/or wave matchings, various methods of providing the counter units for emitting the counter waves defining desired wave characteristics, and the like.
    Type: Application
    Filed: December 2, 2013
    Publication date: April 24, 2014
    Inventor: Youngtack SHIM
  • Publication number: 20140103805
    Abstract: A plasma confinement apparatus, and method for confining a plasma are described and which includes, in one form of the invention, a plurality of electrically insulated components which are disposed in predetermined spaced relation, one relative to the others, and surrounding a processing region of a plasma processing apparatus, and wherein a plurality of passageways are defined between the respective insulated components; and at least one electrically conductive and grounded component forms an electrical field shielding for the processing region.
    Type: Application
    Filed: December 16, 2013
    Publication date: April 17, 2014
    Applicant: ADVANCED MICRO-FABRICATION EQUIPMENT, INC. ASIA
    Inventors: Tom Ni, Jinyuan Chen, Qing Qian, Yuehong Fu, Zhaoyang Xu, Xusheng Zhou, Ye Wang
  • Publication number: 20140103804
    Abstract: There is disclosed an improved LED lighting system and method which limits current and employs a voltage significantly greater than line voltage in order to allow lighting circuits to be built with up to thousands of Watts fed from a sing power/data source. The present system and method allows exceptionally long lengths of LED lighting of 200 meters or more for large scale LED lighting applications such as the architectural delineation of skyscrapers and bridges.
    Type: Application
    Filed: March 15, 2013
    Publication date: April 17, 2014
    Inventors: Siarhei Zhdanau, Vladimir Grigorik