Automatic Control Of The Temperature Modifier Patents (Class 315/117)
  • Patent number: 10236782
    Abstract: The invention relates to a module for operating at least one illuminant, preferably at least one LED, said module having at least one electrically insulating barrier, which separates a primary side that can be supplied, originating from a mains voltage, from a secondary side of the module, from which the at least one illuminant can preferably be supplied. A secondary-side passive circuit is provided, which is connected in a supply path to a primary-side control circuit across the barrier via a galvanically isolated converter. The primary-side control circuit is designed to apply a test signal with predetermined temporal development to the secondary-side passive circuit (via the converter) and simultaneously to monitor a measurement signal generated thereby on the secondary side and fed back into the supply path, more particularly to monitor an increase of current in the converter.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: March 19, 2019
    Assignee: Tridonic GmbH & Co KG
    Inventors: Mathias Dunser, Christoph Vonach, Martin Mohr
  • Patent number: 10197261
    Abstract: An LED illumination apparatus includes an LED device; a base having a concavity for receiving the LED device; a heat sink including a plate coupled to the base and a plurality of fins extending from a surface of the plate opposite the base, the fins extending laterally beyond sides of the plate; a cooling fan for forcing air over the fins; and a casing housing the LED substrate, the base, the heat sink, and the cooling fan.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: February 5, 2019
    Assignees: ACP JAPAN CO., LTD.
    Inventor: Shoichi Nakamura
  • Patent number: 10156338
    Abstract: A lighting device includes an output adjustment circuit, a smoothing circuit and a control circuit. The smoothing circuit receives a binary rotation detection signal according to the rotation of a fan and smooths the rotation detection signal to produce a smoothed signal. The control circuit detects a rotation malfunction of the fan when the smoothed signal is greater than or equal to an upper limit threshold over first predetermined time or when the smoothed signal is smaller than or equal to a lower limit threshold over second predetermined time.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: December 18, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takahiro Fukui, Masanobu Murakami, Takahiro Ohori
  • Patent number: 10094524
    Abstract: The present application discloses a LED-based solar simulator light source having at least one LED array formed by multiple LED groups of LED assemblies, at least one field flattening device, at least one diffractive element, and at least one optical element configured to condition the broad spectrum light source output signal and direct the light source output signal to a work surface.
    Type: Grant
    Filed: September 27, 2014
    Date of Patent: October 9, 2018
    Assignee: Newport Corporation
    Inventors: Greggory W. Switzer, Todd A. McFarland, Robert K. Buczala, II, Paul E. Rishel, Eugene W. Kuntz, Jr.
  • Patent number: 9974125
    Abstract: A light emitting diode (LED) circuit board includes a power input configured to supply power, a driving circuit configured to convert power, and a light emitting circuit configured to generate light. The power input is configured to supply power to the driving circuit. The driving circuit is configured to provide proper power to the light emitting circuit. The light emitting circuit is configured to generate light with the power provided by the driving circuit. An LED circuit board including a driving circuit, a light emitting circuit, and a plurality of semiconductor switches electrically connected between the driving circuit and the light emitting circuit is also provided. Each of the plurality of semiconductor switches is configured to electrically connect and electrically disconnect power from the driving circuit to the light emitting circuit.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: May 15, 2018
    Assignee: COOPER TECHNOLOGIES COMPANY
    Inventors: Andrew Francis Scarlata, Hui Zhang
  • Patent number: 9900951
    Abstract: A lamp having the thermal sensing elements disposed at optimal positions includes a heat sink, a light-emitting module and a power supply module. The heat sink includes a plurality of heat dissipating fins, and a heat dissipating channel formed between each two of the plurality of heat dissipating fins, therefore forms an accommodating space. The power supply module is disposed in the accommodating space. The power supply module includes a conductive base and a controlling module. The power source module and thermal sensitive elements are disposed at the lamp cold zone. First thermal sensing elements of the controlling module are disposed at the lamp heat zone to sense the first operating temperature. A processing unit of the control module lowers the output power of the power source module to the light-emitting module when the first operating temperature is greater than or equal to a first critical operating temperature.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: February 20, 2018
    Assignee: ELEMENTS PERFORMANCE MATERIALS LIMITED
    Inventors: Tsung-Lung Lee, Kuo-Sung Huang
  • Patent number: 9232588
    Abstract: Disclosed are LED backlight subassemblies and LCD displays making use thereof. The backlight subassembly includes at least one string of serially connected LEDs in which single LED failures do not lead to a partial or complete loss of image content.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: January 5, 2016
    Assignee: Aydin Display, Inc.
    Inventor: Joseph G. Gangi
  • Publication number: 20150123543
    Abstract: A method of lighting a high-pressure discharge lamp is configured to change a power to be supplied to the high-pressure discharge lamp in accordance with a luminance parameter of an image content. The method includes switching between a low temperature operation and a high temperature operation so as to maintain a condition that mercury encapsulated into an arc tube part of the high-pressure discharge lamp constantly partially deposits without evaporating. The low temperature operation is performed where the temperature in the arc tube part is less than or equal to the deposition temperature of the mercury, whereas the high temperature operation is performed where the temperature in the arc tube part is greater than the deposition temperature of the mercury.
    Type: Application
    Filed: September 11, 2014
    Publication date: May 7, 2015
    Inventors: Atsuji NAKAGAWA, Shiyoshi Cho, Shinichi Ushijima, Tetsuya Gouda
  • Patent number: 9022573
    Abstract: An image display device includes a light source; a power supply section that supplies power to light source; a cooling fan that cools the light source; an input section; a drive section that supplies a voltage to cooling fan; a control section that controls drive section and power supply section. The control section sets a first power value for the output of the power supply section and also a first voltage value for the output of the drive section. The control section measures a time at which the light source has been lighted. If the measured value exceeds a threshold, the control section gradually increases the output of the power supply section up to a second power value that is greater than the first voltage value over a predetermined time.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: May 5, 2015
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Yukinori Shioya, Jiro Takami
  • Patent number: 9018839
    Abstract: An LED cooling system comprising of a Peltier cooler. The Peltier cooler comprising of a top cooling plate and bottom heating plate. The top cooling plate is capable of directly contacting an LED housing such that heat generated by an LED in the LED housing can be transferred from the LED housing by said Peltier cooler; A control circuit electrically connected to said Peltier cooler to control the amount of power is supplied to said Peltier cooler; said amount of power supplied to said Peltier cooler is determined by the temperature of said LED housing.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: April 28, 2015
    Inventor: Salvatore Guerrieri
  • Patent number: 9018858
    Abstract: A method of operating a lighting fixture comprising a plurality of discrete illumination sources of distinguishably different color coordinates comprises determining target color coordinates and luminous flux at which to operate the lighting fixture, determining input electrical power values for each of the plurality of discrete illumination sources that substantially produce the target color coordinates and luminous flux by referencing a calibration data lookup table having calibration data based on measurements of the plurality of discrete illumination sources, determining a color mixing zone defined by three distinguishably different color coordinates of the plurality of discrete illumination sources within which the target color coordinates lie according to the calibration data, determining luminous flux ratios for each of the plurality of discrete illumination sources having one of the three distinguishably different color coordinates defining the color mixing zone that substantially produces the target
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: April 28, 2015
    Assignee: B/E Aerospace, Inc.
    Inventors: Gannon T. Gambeski, David P. Eckel, Seckin K. Secilmis, Andrew B. Walsh, Richard Waring, Jr., Rand Lee, David Jenkins, Maciej Adam Jakuc, Jeffrey Reeder
  • Patent number: 9000684
    Abstract: A system including a selection module to select one of a plurality of templates corresponding to a plurality of light emitting diodes, where the selected template includes one or more of temperature, current, and voltage characteristics of the plurality of light emitting diodes. A control module measures a voltage across one of the plurality of light emitting diodes; determines a temperature of the plurality of light emitting diodes based on the voltage measured across the one of the plurality of light emitting diodes and the selected template; and in order to maintain a luminosity of the plurality of light emitting diodes at a predetermined luminosity, adjusts current through the plurality of light emitting diodes based on the temperature, the selected template, and calibration data. The calibration data include current through the plurality of light emitting diodes and corresponding luminosities of the plurality of light emitting diodes.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: April 7, 2015
    Assignee: Marvell World Trade Ltd.
    Inventors: Wanfeng Zhang, Radu Pitigoi-Aron
  • Patent number: 8970114
    Abstract: A temperature controlled dielectric window of an inductively coupled plasma processing chamber includes a dielectric window forming a top wall of the plasma processing chamber having at least first and second channels therein. A liquid circulating system includes a source of cold liquid circulating in a first closed loop which is not in fluid communication with the channels, a source of hot liquid circulating in a second closed loop which is in fluid communication with the channels, and first and second heat exchangers. The cold liquid passes through the first heat exchanger at a controllable flow rate and temperature of the hot liquid is adjusted by heat exchange with the cold liquid as the hot liquid passes through the first heat exchanger and then through the inlet of the first channel.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: March 3, 2015
    Assignee: Lam Research Corporation
    Inventors: Matt Busche, Adam Mace, Michael Kang, Allan Ronne
  • Patent number: 8963428
    Abstract: Disclosed herein are an LED lighting control apparatus and an LED lighting control system using the apparatus. The proposed system includes a wired lighting unit connected to LED lighting in a wired manner and configured to perform lighting control on LED lighting. A wireless lighting unit performs lighting control on the LED lighting via wireless communication with a wireless terminal and operates in conjunction with the wired lighting unit. A location communication unit allocates individual IDs of LED lighting and performs transmission/reception of data to/from an external terminal. A multi-sensor unit supports multiple sensors and analyzes sensor data collected from the multiple sensors. An active heat dissipation unit dissipates heat from the LED lighting based on analyzed sensor data. A processor control unit controls operations of the wired lighting unit, the wireless lighting unit, the location communication unit, the multi-sensor unit, and the active heat dissipation unit.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: February 24, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hyun-Joo Kang, Jung-Sik Sung, Tae-Gyu Kang, Hyun-Seok Kim, Jin-Doo Jeong, Hyun-Chul Kang, Seong-Hee Park, Dae-Ho Kim, You-Jin Kim, In-Su Kim, Il-Soon Jang, Sang-Kyu Lim, Myung-Soon Kim, Hyun-Jong Kim
  • Publication number: 20150035438
    Abstract: An over-temperature protecting apparatus and an over-temperature protecting method thereof are provided. The method includes following steps: detecting the temperature of the over-temperature protecting apparatus to obtain an adjusting signal and outputting the adjusting signal to a current detection pin of the control chip; adjusting the duty-ratio of the pulse-width modulated signal by the control chip output from the gate output pin according to the adjusting signal received by the current detection pin.
    Type: Application
    Filed: October 4, 2013
    Publication date: February 5, 2015
    Applicant: Cal-Comp Electronics & Communications Company Limited
    Inventors: Kwan Ho, Yao-Sheng Liu, Chih-Tsung Chen, Hao-Yuan Wang
  • Patent number: 8926139
    Abstract: An illumination device comprises a solid-state lighting device and a heat sink. The heat sink is configured to be attachable to a fixture for a gas-discharge lamp to retrofit existing gas-discharge fixtures. The heat sink is conductively thermally coupled to the solid-state lighting device to dissipate heat generated by the solid-state lighting device.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: January 6, 2015
    Assignee: Express Imaging Systems, LLC
    Inventors: William G. Reed, John O. Renn
  • Patent number: 8917462
    Abstract: An optical transmission module includes a light source element for emitting a predetermined light signal transmitted through an optical fiber, the light source element having lower characteristics in a low-temperature state than those in a high-temperature state, a driver circuit for driving the light source element, and a heat transfer member connected to each of the light source element and the driver circuit to transfer heat between the light source element and the driver circuit. The optical transmission module with such configuration can stably operate in a wide temperature range while achieving power saving and cost reduction.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: December 23, 2014
    Assignee: SAE Magnetics (H.K.) Ltd.
    Inventor: Takemasa Tamanuki
  • Publication number: 20140333203
    Abstract: The invention provides a lighting unit (100) comprising (1) a vacuum ultraviolet (VUV) radiation based source of radiation (10) configured to generate VUV radiation (11), and (2) a luminescent material (20) configured to convert at least part of the VUV radiation into visible luminescent material light (21), wherein the luminescent material comprises a trivalent praseodymium containing material selected from the group consisting of (Zr1-x-yHfxPry)(Si1-yPy)04, (Zr1-x-yHfxPry)3((P1-3/4yS3/4y)04)4, and (Zr1-x-yHxPry)3((B1-3/4yX3/4y))O3)4, with x in the range of 0.0-1.0 and y being larger than 0 and being equal to or smaller than 0.15.
    Type: Application
    Filed: December 4, 2012
    Publication date: November 13, 2014
    Inventors: Georg Greuel, Thomas Juestel, Helga Bettentrup, Benjamin Herden, David Enseling
  • Publication number: 20140313490
    Abstract: A light source apparatus according to the present invention includes a circuit board; a light source mounted on the circuit board; a first temperature measurement element that measures an ambient temperature of the circuit board and outputs a first signal that represents the measured result; a second temperature measurement element that measures a temperature of the circuit board and outputs a second signal that represents the measured result; and a light source drive control section that controls driving of the light source. The light source drive control section does not drive the light source if the temperature represented by the second signal is lower than the temperature represented by the first signal.
    Type: Application
    Filed: September 13, 2012
    Publication date: October 23, 2014
    Inventors: Junichi Miyamoyo, Naoki Masuda, Shuichi Nakanishi
  • Publication number: 20140306609
    Abstract: Disclosed herein are an LED lighting control apparatus and an LED lighting control system using the apparatus. The proposed system includes a wired lighting unit connected to LED lighting in a wired manner and configured to perform lighting control on LED lighting. A wireless lighting unit performs lighting control on the LED lighting via wireless communication with a wireless terminal and operates in conjunction with the wired lighting unit. A location communication unit allocates individual IDs of LED lighting and performs transmission/reception of data to/from an external terminal. A multi-sensor unit supports multiple sensors and analyzes sensor data collected from the multiple sensors. An active heat dissipation unit dissipates heat from the LED lighting based on analyzed sensor data. A processor control unit controls operations of the wired lighting unit, the wireless lighting unit, the location communication unit, the multi-sensor unit, and the active heat dissipation unit.
    Type: Application
    Filed: March 14, 2014
    Publication date: October 16, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Hyun-Joo KANG, Jung-Sik SUNG, Tae-Gyu KANG, Hyun-Seok KIM, Jin-Doo JEONG, Hyun-Chul KANG, Seong-Hee PARK, Dae-Ho KIM, You-Jin KIM, In-Su KIM, Il-Soon JANG, Sang-Kyu LIM, Myung-Soon KIM, Hyun-Jong KIM
  • 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: 20140232269
    Abstract: A sound adapting luminaire produces an amount of cooling output that depends on the ambient sound. When the ambient sound is high, the lamp is cooled more aggressively, since more fan noise is acceptable.
    Type: Application
    Filed: April 30, 2014
    Publication date: August 21, 2014
    Applicant: PRODUCTION RESOURCE GROUP L.L.C.
    Inventor: Jeremiah J. Harris
  • Publication number: 20140232268
    Abstract: The lighting device according to the present invention includes a power supply circuit, a temperature detection circuit, and a temperature control circuit. The power supply circuit supplies operation power to a light source including a solid state light emitting device. The temperature detection circuit measures a surrounding temperature of the light source and outputs the measured surrounding temperature as a detection temperature. The temperature control circuit determines whether an increase rate of the surrounding temperature exceeds a predetermined criterion value. When determining that the increase rate exceeds the criterion value, the temperature control circuit performs a process of decreasing a temperature of the light source.
    Type: Application
    Filed: February 14, 2014
    Publication date: August 21, 2014
    Applicant: Panasonic Corporation
    Inventors: Takeshi KAMOI, Hiroshi KIDO, Akinori HIRAMATU, Junichi HASEGAWA, Shigeru IDO, Nobutoshi MATSUZAKI, Daisuke YAMAHARA
  • Publication number: 20140225507
    Abstract: The lighting device according to the present invention includes: a power source configured to supply power to a light source having a plurality of regions; a plurality of cooling devices arranged corresponding to the plurality of regions to cool the plurality of regions, respectively; and a cooling control circuit configured to control the plurality of cooling devices. The cooling control circuit includes: a plurality of output circuits configured to supply drive voltages to the plurality of cooling devices by use of power from the power source to drive the plurality of cooling devices, respectively; a plurality of temperature measurement circuits configured to respectively measure temperatures of the plurality of regions; and an output control circuit configured to regulate the drive voltages respectively supplied from the plurality of output circuits based on the temperatures respectively measured by the plurality of temperature measurement circuits.
    Type: Application
    Filed: February 10, 2014
    Publication date: August 14, 2014
    Applicant: Panasonic Corporation
    Inventors: Junichi HASEGAWA, Hiroshi KIDO, Akinori HIRAMATU, Takeshi KAMOI, Shigeru IDO, Nobutoshi MATSUZAKI, Daisuke YAMAHARA
  • Publication number: 20140217896
    Abstract: A control system is disclosed for determining an actual temperature of a light emitting diode. The control system uses conductor that supply power to the light emitting diode to supply a pulse to the light emitting diode. The pulse is determined along with a reaction caused by the pulse and the information gained is used in determination of the light emitting diode die temperature which can then be used in controlling current to the light emitting diode to control the temperature of the light emitting diode.
    Type: Application
    Filed: February 11, 2014
    Publication date: August 7, 2014
    Inventors: Anthony W. Catalano, Daniel Harrison
  • Publication number: 20140217895
    Abstract: A temperature controlled dielectric window of an inductively coupled plasma processing chamber includes a dielectric window forming a top wall of the plasma processing chamber having at least first and second channels therein. A liquid circulating system includes a source of cold liquid circulating in a first closed loop which is not in fluid communication with the channels, a source of hot liquid circulating in a second closed loop which is in fluid communication with the channels, and first and second heat exchangers. The cold liquid passes through the first heat exchanger at a controllable flow rate and temperature of the hot liquid is adjusted by heat exchange with the cold liquid as the hot liquid passes through the first heat exchanger and then through the inlet of the first channel.
    Type: Application
    Filed: February 1, 2013
    Publication date: August 7, 2014
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Matt Busche, Adam Mace, Michael Kang, Allan Ronne
  • Patent number: 8791655
    Abstract: Various apparatuses and methods are disclosed for a remotely controllable LED lamp. One embodiment of an LED lamp includes at least one LED in each of a plurality of colors, a power supply, and a controller connected to the power supply and the at least one LED in each of a plurality of colors. The controller is adapted to adjust current levels to the at least one LED in each of a plurality of colors to produce a blended color. The controller is also adapted to adjustably vary an intensity of the blended color without substantially changing the blended color.
    Type: Grant
    Filed: May 9, 2010
    Date of Patent: July 29, 2014
    Assignee: InnoSys, Inc.
    Inventors: Laurence P. Sadwick, William B. Sackett
  • Patent number: 8760060
    Abstract: Various system embodiments comprise a substrate of high thermal conductivity, a solid state light emitting device, an electric circuit, and an electric dielectric. The device has a die and a connection point to the die with a low thermal resistance. The connection point is in contact with the substrate. The electric circuit is electrically connected to the light emitting device, and separated from the substrate by the electrical dielectric. Various system embodiments comprise at least four color sources; and a controller configured to calculate a solution to form a target color using the color sources when the target is outside of a gamut formed by the color sources. The controller is configured to find an equivalent target color with reduced saturation.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: June 24, 2014
    Assignee: Prism Projection, Inc.
    Inventors: Garrett J. Young, Andrew Stangeland
  • Publication number: 20140167615
    Abstract: A heat dissipating method for a light emitting diode is provided. The heat dissipating method includes following steps. Firstly, a circuit board with a light emitting diode formed on one side and a heat dissipating fan formed on the other side is provided. The heat dissipating fan is configured to dissipate heat for the light emitting diode. Secondly, a power source is provided for supplying power for the light emitting diode. Finally, a speed of the heat dissipating fan is adjusted according to an input power of the power source. A lighting device using the heat dissipating method is also provided.
    Type: Application
    Filed: May 13, 2013
    Publication date: June 19, 2014
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHIH-CHEN LAI
  • Patent number: 8736214
    Abstract: A motor-drive circuit includes: an output transistor configured to supply a drive current to a motor for a cooling fan; a switching-control circuit configured to control switching of the output transistor so that the motor rotates in a first direction, or rotates in a second direction opposite to the first direction; and a switching circuit configured to, when a first time has elapsed since start of rotation of the motor in the first direction, cause the switching-control circuit to start switching control so that the motor stops rotating in the first direction and thereafter rotates in the second direction, and configured to, when a second time has elapsed since start of rotation of the motor in the second direction, cause the switching-control circuit to start switching control so that the motor stops rotating in the second direction and thereafter rotates in the first direction.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: May 27, 2014
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Tetsuya Yoshitomi, Masashi Tanabe, Syunji Suzuki
  • Patent number: 8716940
    Abstract: A sound adapting luminaire produces an amount of cooling output that depends on the ambient sound. When the ambient sound is high, the lamp is cooled more aggressively, since more fan noise is acceptable.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: May 6, 2014
    Assignee: Production Resource Group, LLC
    Inventor: Jeremiah J. Harris
  • Patent number: 8698418
    Abstract: A lamp assembly is provided. The lamp assembly has a housing that functions as a heat sink for the dissipation of heat therefrom. A plurality of light emitting diodes are also present and are configured to be driven by a current regulated by a linear current regulator and a switch mode current regulator. Thus, the amount of heat generated through driving the plurality of light emitting diodes is decreased such that the housing is optimally sized and still function as a heat sink.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: April 15, 2014
    Assignee: Truck-Lite Co., LLC
    Inventor: Timothy Dunn
  • Patent number: 8686644
    Abstract: A light generating system comprising: a plurality of solid state emitters (SSEs) and a stability control system for controlling the spectral stability of the SSEs. In a particular case, the stability control system may comprise: a power regulator to regulate power supplied to a sub-set of the plurality of SSEs; a constant current circuit connected to the power regulator to provide a constant current to the sub-set of SSEs; a current regulation set point connected to the constant current circuit; and a controller configured to set the regulation set point based on metrology relating to the state of the SSEs.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: April 1, 2014
    Assignee: ATS Automation Tooling Systems Inc.
    Inventor: Gerald R. Wootton
  • Patent number: 8686643
    Abstract: Systems and methods for reducing lamp restrike time are provided. In a lighting apparatus having a housing, a reflector, and a lamp positioned so that at least a portion of the outer jacket of the lamp is within the reflector, a circulating device is operated when the lamp is off and a temperature inside the housing is above a predefined temperature. The circulating device circulates air around the outer jacket of the lamp to cool the lamp so the restrike time is reduced without the need for a starting device with a starting voltage high enough to restart the lamp when the lamp is hot.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: April 1, 2014
    Assignee: ABL IP Holding LLC
    Inventors: Timothy A. Taubert, Amir P. Fallahi, Raymond Christian Rice, II
  • Publication number: 20140056322
    Abstract: The existing diodes in an LED or laser diode package are used to measure the junction temperature of the LED or laser diode. The light or laser emissions of a diode are switched off by removing the operational drive current applied to the diode package. A reference current, which can be lower the operational drive current, is applied to the diode package. The resulting forward voltage of the diode is measured using a voltage measurement circuit. Using the inherent current-voltage-temperature relationship of the diode, the actual junction temperature of the diode can be determined. The resulting forward voltage can be used in a feedback loop to provide temperature regulation of the diode package, with or without determining the actual junction temperature. The measured forward voltage of a photodiode or the emissions diode in a diode package can be used to determine the junction temperature of the emissions diode.
    Type: Application
    Filed: November 5, 2013
    Publication date: February 27, 2014
    Applicant: MICROSOFT CORPORATION
    Inventors: Leo Del Castillo, Dawson Yee
  • Publication number: 20130334966
    Abstract: A light source apparatus includes a cooling mechanism driving portion for driving a cooling mechanism in such a manner that an element temperature of a light source element which is detected by an element temperature detecting portion reaches a target temperature, and a control portion for calculating a dew point temperature of the cooling mechanism and controlling the cooling mechanism driving portion and a light source element driving portion by using the calculated dew point temperature and the element temperature.
    Type: Application
    Filed: May 21, 2013
    Publication date: December 19, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Koji KUMANO, Makoto KURIAKI, Takumi KIJIMA, Yasuhito TANAKA
  • Patent number: 8587567
    Abstract: A display apparatus according to the present invention using a cold cathode fluorescent lamp as a light source includes: a gradient detector which detects a condition in which one end of the cold cathode fluorescent lamp is disposed higher than an other end thereof; and a controller which conducts control so that emitted luminance of the cold cathode fluorescent lamp is inhibited when the condition in which the one end of the cold cathode fluorescent lamp is disposed higher than the other end thereof is detected by the gradient detector.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: November 19, 2013
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Kengo Mori
  • Patent number: 8564201
    Abstract: A lamp is operated with main and auxiliary amalgams. In accordance with one or more embodiments, a lamp includes an auxiliary amalgam-based material that releases mercury at an elevated temperature that is above an operating temperature of the lamp, and that absorbs mercury at temperatures below the elevated temperature. During a start-up period, the auxiliary amalgam-based material is heated to cause the material to release mercury for generating light in the lamp. After the start-up period, the auxiliary amalgam-based material is allowed to cool below the elevated temperature and absorb mercury, while the lamp continues to operate for generating light using a main amalgam.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: October 22, 2013
    Assignee: NXP B.V.
    Inventor: Cornelis Jozef Petrus Maria Rooijackers
  • Patent number: 8541948
    Abstract: An operating device for operating at least one Hg low-pressure discharge lamp which has a first and a second electrode coil may include a unit for providing a variable that is correlated with the Hg vapor pressure in the at least one Hg low-pressure discharge lamp comprises at least one unit for capturing emission spectra of at least specifiable spectral ranges, wherein the unit for capturing emission spectra may include at least one light receiving unit which is arranged in the beam path of the at least one Hg low-pressure discharge lamp.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: September 24, 2013
    Assignee: Osram Gesellschaft mit Beschraenkter Haftung
    Inventors: Armin Konrad, Roger Hunt, Martin Zachau, Ralph Hoeck
  • Publication number: 20130241415
    Abstract: Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system is configured to provide an air flow, such as a unidirectional air flow, through the housing structure in order to cool the light source. The driver electronics are configured to provide power to each of the light source and the thermal management system.
    Type: Application
    Filed: May 6, 2013
    Publication date: September 19, 2013
    Applicant: General Electric Company
    Inventors: Mehmet Arik, Stanton Earl Weaver, Thomas Elliot Stecher, Charles Erklin Seeley, Glenn Howard Kuenzler, Charles Franklin Wolfe, JR., Yogen Vishwas Utturkar, Rajdeep Sharma, Satish Prabhakaran, Tunc Icoz
  • Publication number: 20130214685
    Abstract: Thermal management and control techniques for light emitting diode and other incandescent replacement light technologies using a current controller are disclosed.
    Type: Application
    Filed: February 13, 2013
    Publication date: August 22, 2013
    Inventors: Anthony Catalano, Daniel Harrison, John Hall
  • Patent number: 8482207
    Abstract: A temperature controlling system for a LED module includes at least one LED unit, at least one fan, at least one temperature sensor and a controlling device. The controlling device generates a driving signal for controlling the rotating speed of the fan based on a temperature detection signal transmitted from the temperature sensor, so that the fan can generate a compulsive airflow for dissipating the heat generated by the LED unit. According to the present invention, the working temperatures of the respective LED units can be kept the same, and a uniform heat-dissipating effect can be achieved.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: July 9, 2013
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Sung-Hsien Sun, Bor-Haw Chang
  • Publication number: 20130148085
    Abstract: A light source lamp lighting device includes a light source lamp, cooling means for cooling the light source lamp, an extinguishing time measurer that calculates extinguishing time information indicating an extinguishing period when the light source lamp was last switched off to a present time, a storage that stores lighting performance, which is a history of successes and failures of lighting the light source lamp, a plurality of cooling times corresponding to an extinguishing period when the light source lamp is switched off indicated by the extinguishing time information as a cooling time for causing the cooling means to operate, and a first threshold set with respect to the lighting performance, and a controller that reads out, in lighting the light source lamp, the lighting performance, the cooling time stored in the storage based on the extinguishing period when the light source lamp is switched off calculated by the extinguishing time measurer, and the first threshold and, when a number of successes of
    Type: Application
    Filed: September 1, 2010
    Publication date: June 13, 2013
    Inventor: Kazuaki Sakamoto
  • Patent number: 8446108
    Abstract: A system including a calibration module, a selection module, and a control module. The calibration module is configured to generate calibration data for a plurality of light emitting diodes (LEDs). The calibration data include current through the LEDs and corresponding luminosities of the LEDs. The selection module is configured to select one of a plurality of templates corresponding to the LEDs. The selected template includes at least one of temperature, current, and voltage characteristics of the LEDs. The control module is configured to determine a temperature of the LEDs and adjust current through the LEDs based on the temperature, the selected template, and the calibration data to maintain a luminosity of the LEDs at a predetermined luminosity.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: May 21, 2013
    Assignee: Marvell World Trade Ltd.
    Inventors: Wanfeng Zhang, Radu Pitigoi-Aron
  • Publication number: 20130107220
    Abstract: A projector includes a light source, a temperature adjustment mechanism, a memory, and a temperature controller. The light source is configured to emit light for displaying an image. The temperature adjustment mechanism is configured to adjust a temperature of the light source. The memory is configured to store an image to be displayed, before the image is displayed. The temperature controller is configured to determine a temporal change in brightness of the image to be displayed, based on the image to be displayed that is stored in the memory, and control the temperature of the light source by the temperature adjustment mechanism based on the temporal change in brightness of the image to be displayed, before the image to be displayed is actually displayed and the brightness of the image is changed.
    Type: Application
    Filed: October 25, 2012
    Publication date: May 2, 2013
    Applicant: SONY CORPORATION
    Inventor: Sony Corporation
  • Patent number: 8384290
    Abstract: The present invention is directed to an illumination system adaptable to a cooling appliance. The illumination system includes a lighting module, a mode switch and a controller. Specifically, the lighting module includes at least one lighting device; the mode switch is used to determine a power mode for the lighting module; and the controller provides corresponding power to the lighting device according to the power mode. In one embodiment, the illumination system further includes a heating module having a heater for providing heat to the controller. In another embodiment, the lighting device is disposed near the controller.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: February 26, 2013
    Assignee: Top Energy Saving System Corp.
    Inventor: Wen-Kuei Tsai
  • Patent number: 8384301
    Abstract: A light source system capable of dissipating heat includes a AC power supply for outputting a first power, a switch device for adjusting an output ratio of the first power according to a light setting, a light emitting device for generating a light source, and a control device for generating an active signal sequence, an heat-dissipation signal sequence and a burst signal according to lighting features of the light emitting device, and combining the active signal sequence and the heat-dissipation signal sequence, to generate a driving signal sequence, for timely outputting the driving signal sequence according to the burst signal, so as to generate the control signal.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: February 26, 2013
    Assignees: AMIC Technology Corporation, Power Up, Inc.
    Inventor: Chun-Chuan Wang
  • Patent number: 8378594
    Abstract: Techniques are disclosed for controlling the light output of a lamp, where lamp efficacy is estimated as a function of estimated lamp temperature and instantaneous input power, or as a function of estimated lamp temperature only. Whether efficacy is estimated as a function of temperature and power, or as a function of temperature only can depend on changes in the lamp operating scenario. The techniques estimate lamp temperature by tracking energy input to and losses from (losses such as radiation, conduction, emission) the lamp arc tube, and determine the corresponding instantaneous light producing ability. The techniques may further be implemented to deliver the appropriate power command to obtain a desired light output. The techniques can be applied towards a general control in which arbitrary or custom light output vs. time paths are produced, and may be implemented by a processor programmed or otherwise configured to execute the desired control scheme.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: February 19, 2013
    Assignee: Osram Sylvania Inc.
    Inventor: Nancy H. Chen
  • Publication number: 20120326610
    Abstract: A lighting unit for illuminating a habitat is provided. The lighting unit includes a housing and a light emitter. The operating parameters of the lighting unit may be adjusted to mimic different natural conditions.
    Type: Application
    Filed: June 22, 2012
    Publication date: December 27, 2012
    Inventors: Justin Lawyer, Patrick Clasen, Timothy Marks, Mark Lindenmoyer
  • Publication number: 20120306372
    Abstract: A method for demisting a glass cover is disclosed. The glass cover is disposed on a display panel. A heating unit is attached onto the glass cover. The method includes detecting a humidity value between the glass cover and the display panel by a humidity sensor and determining whether to start the heating unit to heat the glass cover according to the humidity value by a control circuit board.
    Type: Application
    Filed: September 22, 2011
    Publication date: December 6, 2012
    Inventor: Ching-Hung Yang