Electric Heater For The Load Device Patents (Class 315/115)
  • Patent number: 10658625
    Abstract: A display device includes: a substrate; a first organic light-emitting diode including a first electrode provided above the substrate for each of pixels, a second electrode, and a first light-emitting layer provided between the first electrode and the second electrode; and a heat-generating member supplying heat to the first light-emitting layer.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: May 19, 2020
    Assignee: Japan Display Inc.
    Inventor: Jun Takagi
  • Patent number: 9696229
    Abstract: A force applicator assembly is disclosed to calibrate an in-situ force transducer (or load cell) in a force (load) applying test machine. The force applicator includes stationary member configured to be secured to fixed structure, a moving member, a load cell operably coupled to an end of the moving member, and a differential screw assembly connecting the moving member to the stationary member. A coupling assembly can be used to assure that only tension or compression loads are applied. The coupling assembly can be configured if desired such that no tension or compression loads can be applied. A method to calibrate an in-situ force transducer in a force applying test machine is also provided and uses a force generator and the coupling assembly.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: July 4, 2017
    Assignee: MTS Systems Corporation
    Inventors: Bradley Dean Schulz, Paul M. Krueger
  • Patent number: 9013106
    Abstract: Provided is a lamp ballast having a filament heating apparatus for gas discharge lamp, including a PFC converter for receiving an AC input voltage and converting the AC input voltage into a DC bus voltage; an inverter connected to an output end of the PFC converter for converting the DC bus voltage into an AC output voltage for driving gas discharge lamps; and a filament heating apparatus connected to the output end of the PFC converter. The filament heating apparatus includes an auxiliary heating circuit for converting the DC bus voltage into a heating power for pre-heating the filaments of the gas discharge lamps; and a control circuit connected to the inverter and the auxiliary heating circuit for generating an auxiliary voltage according to the heating power to activate the PFC converter.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 21, 2015
    Assignees: Delta Electronics (Shanghai) Co., Ltd., Delta Electronics, Inc.
    Inventors: Weiqiang Zhang, Qi Zhang, Yan Zhong, Ching-Ho Chou, Jianping Ying
  • Patent number: 8901446
    Abstract: A limit stop apparatus for a multi-pole electrical contact assembly is disclosed. The limit stop apparatus interconnects crossbars of respective contact assemblies wherein one or more contact arms are pivotable relative to each crossbar. The limit stop apparatus is configured to engage the one or more contact arms on a same side of the one or more contact arms containing moveable electrical contacts. In one or more embodiments, the limit stop apparatus has a connecting bar with limit stops having arc shields molded to the connecting bar, wherein the arc shields can be phase-to-phase arc shields and contact-to-component arc shields. Circuit breakers and multi-pole electrical contact assemblies having a limit stop apparatus, and methods of operating the multi-pole electrical contact assembly are disclosed, as are other aspects.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: December 2, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Sheenfar Sean Fong, Francisco Cesar Margain Perez
  • Patent number: 8878436
    Abstract: A fluorescent lighting device includes an arc tube, an exhaust tube extending from the arc tube, and an amalgam. A resistive heater is located adjacent to at least one of the arc tube and the exhaust tube. A power supply circuit is operatively coupled with the resistive heater. When the fluorescent lighting device is switched from an OFF state to an ON state, the power supply circuit temporarily energizes the resistive heater, thereby heating the at least one of the arc tube and the exhaust tube while the resistive heater is energized, and automatically de-energizing the resistive heater after said heating.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: November 4, 2014
    Assignee: General Electric Company
    Inventors: Peter Lucz, Gabor Szabo, Balazs Torok, Miklos Budai, Titusz Talalt, Jacint Gergely, Gabor Schmidt
  • Patent number: 8829795
    Abstract: The present invention provides an electric axial-flow fan having turbine type waterproof enclosure, which is rainproof and installed at the top portion of sealed heat dissipation housing of a high power lamp, so when the electric axial-flow fan is operated, the airflow passes through the top portion of lamp housing, which is relatively hotter, of the sealed heat dissipation housing and is concentrated towards the center, then leaded to upwardly enter an axial airflow inlet port formed at the bottom of the turbine type waterproof enclosure, thereby being exhausted to the surroundings through radially-arranged exhaust blades, thus when the present invention being applied in a high power lamp, an air cooling effect by external airflow can be provided to the top portion, which is relatively hotter, of the lamp housing, without influencing the waterproof sealing effect.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: September 9, 2014
    Inventor: Tai-Her Yang
  • Publication number: 20140210348
    Abstract: An optoelectronic semiconductor chip includes a semiconductor layer sequence having an active layer provided for generating radiation. The semiconductor chip can be operated in a first operating mode and in a second operating mode. The semiconductor layer sequence emits radiation in the first operating mode, while the semiconductor layer sequence emits no radiation in the second operating mode. The semiconductor layer sequence is operated in the forward direction in the first operating mode and in the reverse direction in the second operating mode. A display including a number of semiconductor chips of this type and a use as a motor vehicle headlight are furthermore specified.
    Type: Application
    Filed: June 6, 2012
    Publication date: July 31, 2014
    Applicant: OSRAM OPTO SEMICONDUCTORS GMBH
    Inventors: Martin Rudolf Behringer, Oliver Guenther
  • Patent number: 8742670
    Abstract: The electronic ballast includes: a square wave generator that includes a plurality of switching elements to convert a DC input voltage to an AC square wave output voltage; a transformer that includes a driving winding, a plurality of control windings, at least one inductive winding and at least one control driving circuit. The control windings controls the plurality of switching elements to turn on alternately; a resonant circuit that constitutes a resonant loop together with the driving winding is electrically connected with an output terminal of the square wave generator to drive the light emitting element. The control driving circuit is connected with two terminals of the inductive winding in parallel and receives a control signal to control a voltage across the inductive winding so as to control conducting time of at least one of the switching elements.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: June 3, 2014
    Assignee: Delta Electronics (Shanghai) Co., Ltd.
    Inventors: Yan Zhong, Weiqiang Zhang, JianPing Ying
  • Publication number: 20140091713
    Abstract: One embodiment relates to a mercury-free low-pressure lamp having a bulb. The bulb includes an emissive material and one or more phosphors. The emissive material includes at least one of an alkali metal or an alkaline earth metal, wherein when the bulb is in a non-operational state, the emissive material condenses into a liquid or solid, and when the bulb is in an operational state the emissive material forms an emitter, the emitter in combination with one or more gases generate photons when excited by an electrical discharge. The one or more phosphors are configured to convert at least a portion of the photons to other visible wavelengths.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Applicant: Elwha LLC
    Inventors: Roderick A. Hyde, Jordin T. Kare, Tony S. Pan, Thomas Allan Weaver, Lowell L. Wood, JR.
  • Patent number: 8686642
    Abstract: A high brightness LED (102) is precisely controlled. The temperature of the LED (102) is controlled via controlled thermal resistance (300), measurement of the base temperature (302) and careful power monitoring of the LED (102).
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: April 1, 2014
    Inventors: Andrew Julius Muray, Robin Lynn Teitzel
  • Patent number: 8648530
    Abstract: A fluorescent lighting device includes a ballast and a tube. An amalgam is located within the tube. A resistive heater is operatively coupled with the ballast, to receive electrical power from the ballast while the fluorescent lighting device is in an OFF state. The resistive heater is mounted near the amalgam to transfer heat to the amalgam while the fluorescent lighting device is in the OFF state.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: February 11, 2014
    Assignee: General Electric Company
    Inventors: Gabor Schmidt, Peter Lucz, Jacint Gergely, Zsolt Bagoly, Tamas Daranyi
  • Publication number: 20130342106
    Abstract: A thermionic emission device includes an insulating substrate, a patterned carbon nanotube film structure, a positive electrode and a negative electrode. The insulating substrate includes a surface. The surface includes an edge. The patterned carbon nanotube film structure is partially arranged on the surface of the insulating substrate. The patterned carbon nanotube film structure includes two strip-shaped arms joined at one end to form a tip portion protruded from the edge of the surface of the insulating substrate and suspended. The patterned carbon nanotube film structure includes a number of carbon nanotubes parallel to the surface of the insulating substrate. The patterned carbon nanotube film structure is connected between the positive electrode and the negative electrode in series.
    Type: Application
    Filed: August 23, 2012
    Publication date: December 26, 2013
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITY
    Inventors: YANG WEI, SHOU-SHAN FAN
  • Publication number: 20130181608
    Abstract: The electronic ballast includes: a square wave generator that includes a plurality of switching elements to convert a DC input voltage to an AC square wave output voltage; a transformer that includes a driving winding, a plurality of control windings, at least one inductive winding and at least one control driving circuit. The control windings controls the plurality of switching elements to turn on alternately; a resonant circuit that constitutes a resonant loop together with the driving winding is electrically connected with an output terminal of the square wave generator to drive the light emitting element. The control driving circuit is connected with two terminals of the inductive winding in parallel and receives a control signal to control a voltage across the inductive winding so as to control conducting time of at least one of the switching elements.
    Type: Application
    Filed: June 22, 2012
    Publication date: July 18, 2013
    Applicant: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Yan ZHONG, Weiqiang ZHANG, JianPing YING
  • Publication number: 20130127342
    Abstract: A fluorescent lighting device includes an arc tube, an exhaust tube extending from the arc tube, and an amalgam. A resistive heater is located adjacent to at least one of the arc tube and the exhaust tube. A power supply circuit is operatively coupled with the resistive heater. When the fluorescent lighting device is switched from an OFF state to an ON state, the power supply circuit temporarily energizes the resistive heater, thereby heating the at least one of the arc tube and the exhaust tube while the resistive heater is energized, and automatically de-energizing the resistive heater after said heating.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 23, 2013
    Applicant: General Electric Company
    Inventors: Peter Lucz, Gabor Szabo, Balazs Torok, Miklos Budai, Titusz Talalt, Jacint Gergely, Gabor Schmidt
  • Publication number: 20130063032
    Abstract: A ballast system regulates the supply of power to an illuminant. The ballast system has a controller coupled to a power converter. The controller has a processor and a memory communicatively coupled with a bus. The memory comprising a lighting control system, and the processor is configured to execute the lighting control system to cause the power converter to increase or decrease power supplied to an illuminant.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 14, 2013
    Applicant: FULL SPECTRUM SOLUTIONS
    Inventors: Michael Olen Nevins, Justin Baldwin
  • Publication number: 20130057154
    Abstract: A device to control luminosity of a lamp supported by a rapid start ballast, the device including a first terminal and a second terminal configured to be connected in series with the rapid start ballast and the lamp, a current divisor array, in communication with the first terminal and the second terminal, with a plurality of inductors and a commutable element, the commutable element selecting between two current paths employing the plurality of inductors, the commutable element when in a first state selecting a first one of the current paths to provide a higher luminosity setting and when a second state selecting a second one of the current paths to provide a lower luminosity setting, and a transformer in communication with the first terminal and the second terminal configured to provide heating to an electrode of the lamp.
    Type: Application
    Filed: September 6, 2011
    Publication date: March 7, 2013
    Applicant: Intelliswitch, S.A. de C.V.
    Inventors: Vicente Humberto Aldape Ayala, Ricardo Alejandro Lopez Guajardo, Javier Aldape Domene, Alberto Aldape Domene
  • Publication number: 20130043790
    Abstract: Electron sources for a cathodoluminescent lighting system are disclosed. An electron source is a broad-beam reflecting-type electron gun having a cathode for emitting electrons and a reflector and/or secondary emitter electrode and no grids. An alternative electron gun has a cathode having a heater welded to a disk, the disk having an emissive surface on a side facing a dome-shaped defocusing grid and an anode. A lighting system incorporating the electron sources has an envelope with a transparent face, an anode with a phosphor layer to emit light through the face and a conductor layer. The system also has a power supply for providing from five to thirty thousand volts of power to the light emitting device to draw electrons from cathode to anode and excite a cathodoluminescent phosphor, and the electrons transiting from cathode to anode are essentially unfocused. A power-factor-corrected embodiment is also disclosed.
    Type: Application
    Filed: October 22, 2012
    Publication date: February 21, 2013
    Applicant: VU1 CORPORATION
    Inventor: VU1 CORPORATION
  • Patent number: 8338808
    Abstract: The present invention relates to an ultraviolet radiation lamp. The lamp comprises: (i) a substantially sealed cavity comprising a mercury-containing material; and (ii) a heating unit disposed exteriorly with respect to the cavity. The heating unit is disposed in contact with a first portion of the cavity comprising the mercury-containing material. The heating unit has adjustable heat output.
    Type: Grant
    Filed: May 15, 2006
    Date of Patent: December 25, 2012
    Assignee: Trojan Technologies
    Inventors: Jim Fraser, Michael Sasges
  • Patent number: 8304995
    Abstract: A lamp includes a bracket having a cover, a lamp body fixed to the bracket by a shaft, a heating device and a pressure switch. The lamp body includes first and second portions at opposite sides of the shaft. The heating device is mounted at the first portion of the lamp body and the cover. The pressure switch is mounted to the cover and engages with a top of the second portion. When a weight of the snow/ice accumulated on the first portion of the lamp body is beyond a set value, the pressure switch controls the heating device to be switched on to melt the snow/ice; when the weight of the snow/ice accumulated on the lamp body decreases to be less than the set value, the pressure switch controls the heating device to be switched off.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: November 6, 2012
    Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.
    Inventors: Chin-Long Ku, Chin-Wen Yeh, Zhen-Neng Lin
  • Patent number: 8044558
    Abstract: A dimmable arc lamp assembly comprises a lamp enclosure comprising a chamber enclosing a light-emitting material, first and second electrodes extending into the chamber of the lamp enclosure, and a heating element proximate the chamber configured to heat at least a portion of the lamp enclosure to a temperature greater than the boiling point of the light-emitting material such that the light-emitting material remains in a gaseous state. Because the light-emitting material remains above its boiling point during lamp operation, dimming is not susceptible to control issues that can result from condensation of the light-producing material. Such lamps may be used in various applications such as in flat panel displays.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: October 25, 2011
    Assignee: Honeywell International Inc.
    Inventor: Scot Olson
  • Patent number: 8018130
    Abstract: The invention relates to a lamp system comprising a low-pressure mercury vapor discharge lamp having a discharge vessel (6) enclosing a discharge space (8), with two electrodes (10, 30) positioned in the discharge vessel and an amalgam (18) arranged at a first end section (28) outside the discharge path between the first electrode and the second electrode. A ballast generates an electrical discharge current independently of an electrical heating current. A heating element (22) is positioned in the first end section for heating the amalgam using the electrical heating current. The temperature of the amalgam can be kept within its optimal temperature range for a relatively broad range of operating conditions.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: September 13, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Antonius Cornelis Van Den Broek, John Elen, Frank Kloek, Koen Lenaerts, Heleen Esch, Jaak Geboers
  • Publication number: 20110148305
    Abstract: It is provided a dielectric barrier discharge lamp with a metal material in the gas discharge vessel. The metal material increases the efficacy of the lamp.
    Type: Application
    Filed: August 14, 2009
    Publication date: June 23, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Daiyu Hayashi, Georg Greuel, Rainer Hilbig, Norbert Braun
  • Publication number: 20110140604
    Abstract: A UV curing lamp has variable resistive ballast provided by at least one resistance alloy wire and a set of switches tapping varying positions along the resistance alloy wire. The variable resistance ballast defines the lamp's maximum operating power consistent with the power supply. The wire in combination with a fan also doubles as thermal ballast provided by air flowing across the wire onto the UV lamp. A detachable reflector in a generally parabolic cylinder shape directs light from the lamp located on the reflector's focal axis. The curing lamp with resistive ballast can be in the form of a handheld unit or as a floor unit with rotating lamps within the housing.
    Type: Application
    Filed: February 3, 2011
    Publication date: June 16, 2011
    Applicant: ADASTRA TECHNOLOGIES, INC.
    Inventor: George Wakalopulos
  • Publication number: 20110101864
    Abstract: A lamp includes a bracket having a cover, a lamp body fixed to the bracket by a shaft, a heating device and a pressure switch. The lamp body includes first and second portions at opposite sides of the shaft. The heating device is mounted at the first portion of the lamp body and the cover. The pressure switch is mounted to the cover and engages with a top of the second portion. When a weight of the snow/ice accumulated on the first portion of the lamp body is beyond a set value, the pressure switch controls the heating device to be switched on to melt the snow/ice; when the weight of the snow/ice accumulated on the lamp body decreases to be less than the set value, the pressure switch controls the heating device to be switched off.
    Type: Application
    Filed: April 30, 2010
    Publication date: May 5, 2011
    Applicants: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., FoxconnTechnology Co., Ltd.
    Inventors: Chin-Long Ku, Chin-Wen Yeh, Zhen-Neng Lin
  • Patent number: 7884552
    Abstract: A backlight device includes a hot cathode fluorescent tube having a pair of electrodes, a power source arranged to apply voltage having an alternating component to at least one of the pair of electrodes, and an electrode heating circuit arranged to supply heating current to the electrodes. The backlight device further includes temperature sensors that detect the temperatures in the electrodes to be supplied with the heating current. Based on the results detected by the temperature sensors, a switch element is driven by the control section. The heating current is thus controlled. With this, the temperatures in the electrodes of the electrical discharge tube can be more accurately grasped, and the temperatures in the electrodes of the discharge tube can be more properly controlled.
    Type: Grant
    Filed: July 3, 2006
    Date of Patent: February 8, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yoshiki Takata
  • Patent number: 7880395
    Abstract: A method for restoring the function of a plasma display panel according to the present invention restores a function of a plasma display panel by raising the temperature of the plasma display panel to 400° C. to 800° C.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: February 1, 2011
    Assignee: Panasonic Corporation
    Inventors: Tomohiro Okumura, Mitsuo Saitoh, Masashi Morita, Masaharu Terauchi, Junko Asayama
  • Patent number: 7723911
    Abstract: A flat fluorescent lamp is provided. In the flat fluorescent lamp, a discharge gas and a fluorescent material are disposed inside a chamber; first and second electrodes covered by a dielectric layer are disposed at the bottom of the chamber; first protruding points are disposed on a first side of each electrode; and second protruding points are disposed on a second side of each electrode. In each electrode, the first and the second protruding points are alternately laid. The first light-emitting region formed between the first protruding points and the first and second electrodes corresponding thereto and the second light-emitting region formed between the second protruding points and the first and second electrodes corresponding thereto are one of the entirely not overlapping and partially overlapping. Further, a driving method for the flat fluorescent lamp and a liquid crystal display device having the flat fluorescent lamp are provided.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: May 25, 2010
    Assignee: Chunghwa Picture Tubes, Ltd
    Inventors: Chu-Chi Ting, Yu-Heng Hsieh, Chia-Lun Lin, Kuo-Sheng Sun
  • Patent number: 7622868
    Abstract: An inductively powered gas discharge lamp including both a power coil and a heating coils associated with each filament. The heating coils enable the filaments to be preheated before the starting voltage is applied through the power coils. The inductive power coils and the inductive heater coils are contained within the lamp envelope, allowing the lamp to be entirely sealed. A method of dimming the lamp also is disclosed. The lamp is dimmed by both decreasing the power applied to the power coils and increasing the power applied to the heating coils so as to prevent the arc from extinguishing under lower voltage conditions.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: November 24, 2009
    Assignee: Access Business Group International LLC
    Inventors: David W. Baarman, John James Lord, Nathan P. Stien, Wesley J. Bachman
  • Publication number: 20090267518
    Abstract: The invention relates to an electronic ballast device for operating an electric lamp (2), comprising a first (21) and a second lamp filament (22), wherein the lamp filaments (21, 22) are electrically connected to a heating circuit (3) during a pre-warming phase for the electric lamp (2) said heating circuit (3) being of such a form that the heating current generated by the heating circuit (3) during an operational phase of the electric lamp (2) amounts to between 20% and 60% of the lamp current of said electric lamp (2). The invention further relates to a method for operation of an electric lamp with an electronic ballast device.
    Type: Application
    Filed: October 12, 2006
    Publication date: October 29, 2009
    Applicant: OSRAM GESELLCHAFT MIT BESCHRAENKTER HAFTUNG
    Inventors: Bernhard Schemmel, Kay Schmidtmann
  • Publication number: 20090090667
    Abstract: The invention relates to an ultraviolet radiation lamp. The lamp comprises a substantially sealed cavity comprising a mercury-containing material; a filament disposed in the sealed cavity; and an electrical control element in contact with the filament, the electrical control element configured to adjust or maintain a temperature of the mercury-containing material with respect to a prescribed temperature. Such a constructions allows the present ultraviolet radiation lamp to be operated at optimal efficiency without the need to use additional components to add heat to and/or remove heat from the mercury-containing material.
    Type: Application
    Filed: August 31, 2006
    Publication date: April 9, 2009
    Inventors: Jim Fraser, Joseph Elku, Michael Sasges
  • Patent number: 7499261
    Abstract: A load control device is adapted to be installed in an electrical wallbox having a barrier. The load control device comprises a split enclosure having first and second enclosure portions spaced apart so as to define a gap, such that the gap is adapted to receive the barrier of the electrical wallbox when the load control device is installed in the wallbox. First and second connectors are provided in first and second openings of the first and second enclosure portions, respectively. The load control device is operable to receive a first control signal at the first connector and to generate a second control signal, which is provided at the second connector, in response to the first control signal.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: March 3, 2009
    Assignee: Lutron Electronics Co., Inc.
    Inventor: Michael Hash
  • Publication number: 20090026965
    Abstract: The invention relates to a lamp system comprising a low-pressure mercury vapor discharge lamp having a discharge vessel (6) enclosing a discharge space (8), with two electrodes (10, 30) positioned in the discharge vessel and an amalgam (18) arranged at a first end section (28) outside the discharge path between the first electrode and the second electrode. A ballast generates an electrical discharge current independently of an electrical heating current. A heating element (22) is positioned in the first end section for heating the amalgam using the electrical heating current. The temperature of the amalgam can be kept within its optimal temperature range for a relatively broad range of operating conditions.
    Type: Application
    Filed: January 30, 2007
    Publication date: January 29, 2009
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Antonius Cornelis Van Den Broek, John Elen, Frank Kloek, Koen Lenaerts, Heleen Esch, Jaak Geboers
  • Publication number: 20080018258
    Abstract: A method for lighting a flat fluorescent lamp for a large-sized backlight unit is disclosed, to prevent a discharge interference (scattering in fluorescent discharge) when lighting a plurality of groups of cylindrical electrodes being adjacent, in which an A.C. voltage is applied to one or two groups of cylindrical electrodes through introduction wires for lighting lamp in state of being not applied to adjacent one or two groups of cylindrical electrodes, so the plurality of groups of cylindrical electrodes are sequentially switched on and off in a time-division method at a speed not to generate the flicker of lamp.
    Type: Application
    Filed: January 26, 2005
    Publication date: January 24, 2008
    Inventor: Masanobu Aizawa
  • Patent number: 7108399
    Abstract: A light source unit includes a substrate mounting a plurality of light emitting diodes (LED's) for irradiating beam to an object. The substrate is formed of a material having high heat conductivity and the unit includes a chip resistor mounted on the substrate and heat generation controller for heating the substrate with heat generated in the chip resistor upon supply of power to the chip resistor. The plural LED's are arranged in the form of an array on the substrate and a plurality of the chip resistors are arranged linearly along the array of LED's.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: September 19, 2006
    Assignee: Noritsu Koki Co., Ltd.
    Inventors: Hiroshi Miyawaki, Masayuki Tamai, Ryohei Yamashita
  • Patent number: 7009329
    Abstract: Systems and methods for providing a thermally optimized cold cathode heater in which a heater wire is disposed in a plurality of turns are shown. Turns of the plurality of turns are closely spaced to concentrate heat in an area of a host cathode device corresponding to a cold cathode position and turns of the plurality of turns are disposed to minimize introduction of heat in an area of the host cathode device not corresponding to the cold cathode position.
    Type: Grant
    Filed: August 20, 2003
    Date of Patent: March 7, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: William R. Haas, Kirk S. Tecu, Louis R. Turf, III
  • Patent number: 6837589
    Abstract: Disclosed herein is a heater module of a rapid thermal processing apparatus. The heater module comprises a heater reactor provided with reflectors, lamps, a cooling gas inlet unit, a quartz window, a quartz window fixing unit, and a cooling gas outlet unit. According to the present invention, since the lamps, reflectors and the like provided in the heater module are cooled during or after thermal processing steps, it is possible to maintain smooth operation thereof, to extend its usage life, and to reduce a preparation time of thermal processing steps. Further, as the respective reflectors adopt an independent structure for allowing the respective lamps to be installed therein in a one-on-one fashion, it is possible to achieve accurate control of a heating source. Furthermore, the lamps adopt a structure capable of effectively reflecting light emitted therefrom, resulting in an improvement in a thermal efficiency.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: January 4, 2005
    Assignee: Kornic Systems Corporation
    Inventor: Won-Sik Nam
  • Patent number: 6798142
    Abstract: In a flash emitting device, a flash from the plurality of flash discharge lamps is emitted on a work piece. The flash emitting device has a plurality of flash discharge lamps arranged in parallel including side flash discharge lamps located on sides of the flash emitting device and center flash discharge lamps located at the center portion of the flash emitting device, side main condensers, each of which is connected to one of the side flash discharge lamps, and center main condensers, each of which is connected to one of the center flash discharge lamps, wherein a voltage to which the side main condensers is charged is higher than that to which the center main condensers are charged.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: September 28, 2004
    Assignee: Ushio Denki Kabushiki Kaisha
    Inventor: Hiromasa Eguchi
  • Publication number: 20040027075
    Abstract: A high pressure mercury lamp includes a luminous bulb in which at least mercury is enclosed inside the bulb, and a pair of sealing portions that retain airtightness of the luminous bulb. The amount of the enclosed mercury is 230 mg/cm3 or more based on a volume of the luminous bulb, and heating means for heating the luminous bulb is provided at least at part of the luminous bulb and the pair of sealing portions.
    Type: Application
    Filed: June 26, 2003
    Publication date: February 12, 2004
    Inventors: Shinichiro Hataoka, Kiyoshi Takahashi, Makoto Horiuchi, Makoto Kai, Tsuyoshi Ichibakase, Tomoyuki Seki, Yuriko Kaneko
  • Patent number: 6597118
    Abstract: To provide a high-pressure mercury lamp capable of shortening the light output rise time and of preventing glow discharge that occurs when the lamp is lighted, a high-pressure mercury lamp (1) luminescent device with a pair of electrodes (6, 7) placed opposite one another within a discharge vessel (2) made of quartz glass with seals (4, 5) formed on both ends and at least 0.15 mg/mm3 of mercury sealed into the discharge vessel, has a device (11, 12) for increasing the temperature of the outer wall of the luminescent portion (3) of the discharge vessel (2) to at least 100° C. before the high-pressure mercury lamp is lit.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: July 22, 2003
    Assignee: Ushiodenki Kabushiki Kaisha
    Inventors: Tomoyoshi Arimoto, Masashi Okamoto, Izumi Takaya
  • Publication number: 20020195952
    Abstract: A regulated power supply includes a pyroelectric capacitor. Such a power supply can be incorporated into an integrated circuit.
    Type: Application
    Filed: June 26, 2001
    Publication date: December 26, 2002
    Inventor: Frederick A. Perner
  • Patent number: 6411042
    Abstract: An apparatus and method is disclosed for regulating the cold spot temperature of a light emitting enclosure. A cold spot regulation system defines and controls the temperature of the cold spot. The cold spot regulation system includes an interface housing secured to the light emitting enclosure and two ducts extending from the interface housing. The cold spot regulation system uses a coolant fluid to lower the operating temperature of the light emitting enclosure. The coolant fluid is diverted into one of the ducts. The coolant fluid is passed by the cold spot of the light emitting enclosure and released out the other duct.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: June 25, 2002
    Assignee: Honeywell International Inc.
    Inventors: Brian David Cull, Dennis Michael Davey, Alan Stuart Feldman
  • Publication number: 20010002780
    Abstract: An electronic ballast for a low-pressure discharge lamp (LA) contains an inverter that is fed with direct voltage (UBUS) and the output of which is connected to a load circuit containing terminal contacts for the lamp (LA), a heating transformer that has a primary winding (Tp), which is connected to the output of the inverter, and a respective secondary winding (Ts1, Ts2), which is located in a heating circuit with a coil (W1, W2), for heating each of the two electrodes of the lamp (LA), and a series circuit arrangement that is connected in parallel with the load circuit and which contains the primary winding (Tp) of the heating transformer and an electronic switch arrangement (S3, S4). For the purpose of identifying the type of lamp and the state of the lamp, the currents in one of the two heating circuits and in the primary winding (Tp) of the heating transformer are measured and evaluated.
    Type: Application
    Filed: January 24, 2001
    Publication date: June 7, 2001
    Inventor: Dietmar Klien
  • Patent number: 6088513
    Abstract: At a data output apparatus side, raster image information, which is obtained by means of performing an exclusive OR operation between raster image information on the preceding line and raster image information on the current line, is compression-processed in a raster direction and then transmitted to a data processing apparatus. In the data processing apparatus, the received image information is expansion-processed, an exclusive OR operation between image information after the expansion and image information on the preceding line is carried out, and a processing for recording and the like is performed taking the thus obtained information as the raster image information on the current line. Thus it is possible to provide a higher compression rate of the image information with a simple processing and to improve a processing speed.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: July 11, 2000
    Inventors: Yoshihiro Nakagawa, Masao Sasaki
  • Patent number: 5939843
    Abstract: The present invention relates to a multi-frequency display system and method for providing color convergence. The system comprises a convergence circuit that is configured to receive a first set and a second set of color input signals. The first of color input signals operates at a first frequency, and the second set of color input signals operates at a second frequency. The system also comprises a controller circuit coupled to the convergence circuit, that is configured to generate a first convergence signal corresponding to the first frequency and a second convergence signal corresponding to the second frequency. The convergence circuit generates a first control signal in response to the first set of color input signals and the first convergence signal. The convergence circuit generates a second control signal based on the second set of color input signals and the second convergence signal.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: August 17, 1999
    Assignees: Sony Corporation, Sony Electronics, Inc.
    Inventors: Masanobu Kimoto, Paolo A. Espinosa
  • Patent number: 5898275
    Abstract: A fluorescent light source includes a fluorescent lamp, lamp bases attached to opposite ends of the fluorescent lamp, and an electrically insulating substrate connected to the fluorescent lamp. A heating element is positioned on the fluorescent lamp, and a first and second pair of power traces are formed on the electrically insulating substrate. The first pair of power traces are connected to the heating element to provide power thereto. The second pair of power traces are connected to a pair of electrical conductors that provide power to the fluorescent lamp. This fluorescent lamp can be used in a replaceable fluorescent light source unit for a document scanner. The replaceable fluorescent light source unit includes a housing, lamp base receiving members attached to the housing, and registration notches to properly align the fluorescent lamp. Lastly, the fluorescent lamp source includes light blocking material to provide a uniform illumination profile along the length of the lamp.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: April 27, 1999
    Assignee: Xerox Corporation
    Inventors: Joseph P. Taillie, Douglas E. Proctor
  • Patent number: 5834908
    Abstract: Operation of a vapor lamp light source for instrumentation utilizes a lamp manager controller for instant-on and precise temperature control to enhance and control output at specified wavelengths by monitoring and discriminating the spectral output of the lamp, and adjusting lamp current and temperature to maintain specific wavelength and light flux. Specific wavelengths can be selected and the wavelength automatically monitored for output level by control of a cold spot by an electrothermal device and a monitor. Lamp temperature, current and flux level at a selected wavelength are controlled.
    Type: Grant
    Filed: May 15, 1996
    Date of Patent: November 10, 1998
    Assignee: BHK, Inc.
    Inventors: Steven H. Boland, T. Lyle Brady
  • Patent number: 5808418
    Abstract: Disclosed is a control mechanism for regulating the temperature of a fluorescent lamp tube located within a housing. The control mechanism includes a cold spot mechanism defining the cold spot of the lamp tube, a heating mechanism, a power supply and a temperature sensor. The heating mechanism is connected to the power supply and is contiguous with a portion of the cold spot mechanism located outside of the housing. The temperature sensor is also coupled to the power supply and monitors the temperature of the cold spot mechanism. Based upon the temperature of the cold spot mechanism, the temperature sensor operates the power supply, so as to deliver power to the heating mechanism to warm the cold spot mechanism and maintain a cold spot temperature that allows the lamp tube to generate maximum visible light output.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: September 15, 1998
    Assignee: Honeywell Inc.
    Inventors: Bruce A. Pitman, Richard M. Meldrum
  • Patent number: 5801768
    Abstract: Adjustment of an electron beam landing position during thermal expansion of a shadow mask in a color cathode ray tube (CRT) on a production line of color television receivers is performed by calculating an optimum compensation value and converting the compensated data into a coordinate value and displaying it on the screen to decrease the conducting time of the CRT, and improve accuracy and uniformity of purity adjustment.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: September 1, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yasunobu Sudo, Toshimi Kobori
  • Patent number: 5767934
    Abstract: A liquid-crystal display arrangement consisting of a liquid-crystal display, a light source constructed as a fluorescent lamp and a heat source which is thermally coupled to the fluorescent lamp. The heat source is formed as an essentially flat sheet on the side of the lamp opposite the display, with the heat source connected is series with a PTC type temperature sensor. In order to achieve a uniform and rapid establishment of the optimum operating temperature of the fluorescent lamp, the heat source is formed by a temperature-controlled foil-type heating element.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: June 16, 1998
    Assignee: Robert Bosch GmbH
    Inventor: George Goddard
  • Patent number: 5406172
    Abstract: A light source device having a controlled current source that maintains a constant intensity of light from the source during changes in light source temperature, particularly at warm-up. The light source is heated to speed up warm-up and to maintain constant temperature of the source during operation under varying ambient temperatures. Control of the current to the light source is determined by the temperature profile circuit with signals via a temperature signal conditioner from a temperature sensor proximate to the light source. Control of the heater is ultimately dictated by temperature sensor signals.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: April 11, 1995
    Assignee: Honeywell Inc.
    Inventor: Robert E. Bennett