Radiant Energy Responsive Control Type Patents (Class 315/134)
  • Patent number: 10321535
    Abstract: The disclosure relates to devices, systems, and methods for adjusting and/or maintaining color temperature levels of luminaires. The luminaires may be Light Emitting Diode (LED)-based luminaires which are part of a smart illumination system. In certain exemplary embodiments, the disclosure includes a smart gateway device which is configured to control operation of a luminaire and is connected to a server, such as cloud server, over wired and/or wireless communication channels. The exemplary devices, systems, and methods adjust and maintain a color temperature of the luminaire according to desired or required specifications.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: June 11, 2019
    Assignee: Gooee Limited
    Inventors: Simon Coombes, Shmuel Silverman, Jonathan Couch
  • Patent number: 9807445
    Abstract: Systems and methods for providing photosensitivity protection for content displayable with a screen display are provided. Content, which may include video content, may be received at a media device. A portion of the video content that corresponds to flashing images may be identified with the media device. A precaution against the flashing images may be identified based at least in part on the identifying of the portion of the video content that corresponds to flashing images. One or more of at least a portion of the video content and/or information about the video content may be displayed based at least in part on the precaution.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: October 31, 2017
    Assignee: EchoStar Technologies L.L.C.
    Inventor: Dale Llewelyn Mountain
  • Patent number: 9559153
    Abstract: A display device includes: an organic layer arranged in plural pixels which are arranged in a display area in a matrix; a first electrode that is formed on a surface of the organic layer opposite to a substrate, and transmits a visible light; a second electrode that holds the organic layer in cooperation with the first electrode, and is lower in the transmittance of the visible light, and higher in the reflectance than the first electrode; an insulating layer that holds the second electrode in cooperation with the organic layer, and higher in the transmittance of the visible light, and lower in the reflectance than the second electrode; and a third electrode that holds the insulating layer in cooperation with the second electrode, is formed across adjacent pixels of the plural pixels, and lower in the transmittance of the visible light, and higher in the reflectance than the second electrode.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: January 31, 2017
    Assignee: Japan Display Inc.
    Inventor: Masaya Adachi
  • Patent number: 9041298
    Abstract: A motion activated toilet bowl lighting device includes a body member having inner, outer, top, and bottom walls that define an interior area. The inner wall includes an inwardly annular configuration complementary to a toilet bowl rim outer surface. The lighting device includes an attachment arm displaced from the inner wall. A bridge connects the top wall to the attachment arm such that the inner wall, attachment arm, and bridge sandwich the toilet rim. A motion detector is positioned on the outer wall and a light is positioned on the attachment arm. A light sensor is positioned on the body member. A battery and timer are situated in the interior area. The light is energized when the light sensor detects lower than a predetermined amount of ambient light and when the motion detector detects movement, the light being de-energized when the timer expires.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: May 26, 2015
    Inventors: Brian R. Andy, Jeff S. Barbieri
  • Publication number: 20150130355
    Abstract: A wearable user interface device provides a display (e.g. an augmented reality display) for a user/wearer. The device includes a camera or other optical sensor and wireless communication capability. The camera or sensor provides an input to detect and possibly communicate with a lighting device or system. The communications and display capabilities allow the device to obtain and present lighting-related information to the wearer. For example, before installation, the device may identify a light fixture and communicate with a server to obtain information about fixture installation or configuration. As another example, the user can operate the device to identify and communicate with an installed fixture, to configure the fixture into a system (e.g. as part of a lighting group) or to check or repair fixture or system firmware. Hence, the device provides a wearable, interactive user interface for a variety of lighting-related functions.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 14, 2015
    Applicant: ABL IP HOLDING LLC
    Inventors: Jack C. RAINS, JR., David P. RAMER, Januk AGGARWAL
  • Publication number: 20140292204
    Abstract: Disclosed is a method of determining depreciation of a lumen output of an LED. More particularly, disclosed is a method of determining depreciation of a lumen output of an LED comprising monitoring, by a processing device, an operating characteristic of an AC power source operatively coupled to the LED; determining, by the processing device, whether a lumen output the LED depreciated beyond a specified lumen value based on the monitoring; and causing, by the processing device, an indicator to provide notification to a user based on determining the lumen output of the LED depreciated beyond the specified lumen value.
    Type: Application
    Filed: March 13, 2014
    Publication date: October 2, 2014
    Applicant: Hayward Industries, Inc.
    Inventors: Kevin L. Potucek, James Carter, James Murdock, Steven Mitchell, Gregory Fournier
  • Patent number: 8816601
    Abstract: A method of manufacturing a power supply unit (PSU) is provided. The method includes providing at least one PSU supplying a dimming signal to at least one light source, performing a first test for electrical characteristics of the at least one PSU, detecting light emitted from the at least one light source, measuring a flicker of the at least one light source, and performing a second test for a state of the at least one PSU based on a flicker measurement result, and packing a PSU determined to be in a normal state among the at least one PSU, as a result of the first test and the second test.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: August 26, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin Sung Kim, Kyu Cheol Kang, Jin Woo Bae, Choul Ho Lee, Jong Yang Choo
  • Patent number: 8760052
    Abstract: If a state to be informed occurs during an on-state of an ignition switch of a vehicle, a first and a second switching transistor are turned on by a control signal of a signal line, and an indicator lamp is lighted by power from a meter power supply. In addition, a third and a fourth switching transistor are turned on by a sub control signal of the signal line during an off-state of the ignition switch, and the indicator lamp is lighted by power from a continuous power supply.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: June 24, 2014
    Assignee: Yazaki Corporation
    Inventor: Kazuyoshi Tomura
  • Publication number: 20140015413
    Abstract: A driving method of a light source apparatus includes causing a primary light source to emit checking light. The checking light has light intensity sufficient to check a state of the light source apparatus and unharmful to the human body even when the checking light leaks. This emission is based on an output signal from a photodetector having detected a light radiated from a light conversion unit. The method further includes checking a state of the light source apparatus. The checking the state of the light source apparatus is based on an output signal from the photodetector having detected light radiated from the light conversion unit and entering the photodetector based on the checking light.
    Type: Application
    Filed: September 16, 2013
    Publication date: January 16, 2014
    Applicant: OLYMPUS CORPORATION
    Inventors: Takeshi ITO, Masahiro NISHIO
  • Patent number: 8581500
    Abstract: A method of manufacturing a power supply unit (PSU) is provided. The method includes providing at least one PSU supplying a dimming signal to at least one light source, performing a first test for electrical characteristics of the at least one PSU, detecting light emitted from the at least one light source, measuring a flicker of the at least one light source, and performing a second test for a state of the at least one PSU based on a flicker measurement result, and packing a PSU determined to be in a normal state among the at least one PSU, as a result of the first test and the second test.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: November 12, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin Sung Kim, Kyu Cheol Kang, Jin Woo Bae, Choul Ho Lee, Jong Yang Choo
  • 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
  • Patent number: 8485681
    Abstract: A smart safety glove, wristband, method and kit is shown and described. In one embodiment, the glove or wristband includes an enclosing shell, a printed circuit board and a light configured to indicate intentions to traffic. In particular embodiments, the glove is in a sleep mode in a substantially horizontal position and the light is illuminated in a substantially vertical position. A method of hand signaling using a smart safety glove includes positioning the smart glove from the substantially horizontal sleep position to a predefined substantially vertical signaling position.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: July 16, 2013
    Inventor: Lars Richter
  • Publication number: 20130162145
    Abstract: An electronic device, including a battery, a port for connecting a battery charger to charge the battery, a light emitter, and a sensor connected to the light emitter, for activating the light emitter when the sensor detects one or more vicinity light requirements indicating a need for light in the environment of the sensor, and for deactivating said light emitter when the battery charger is successfully connected to the port.
    Type: Application
    Filed: February 7, 2013
    Publication date: June 27, 2013
    Inventors: Uri Ron, Eyal Bychkov
  • Publication number: 20130140993
    Abstract: A failsafe lighting system (1) comprises a lamp (L) and monitoring circuitry for monitoring the correct functioning of the lamp (L), the monitoring circuitry comprising an optical sensor (26) positioned for receiving light generated by the lamp (L). The monitoring circuitry comprises a self-oscillating loop (25) which includes the lamp (L) and the optical sensor (26), wherein the optical path between the lamp (L) and the optical sensor (26) is an essential portion of the loop (25) such that the loop (25) can only oscillate if the optical sensor (26) receives sufficient light from the lamp (L).
    Type: Application
    Filed: June 1, 2011
    Publication date: June 6, 2013
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Thomas Georg-Christian Theodor Buerrig, Artur Lorenz Boebel
  • Patent number: 8442785
    Abstract: One or more example diagnostics may be implemented as part of an intelligent luminaire manager or other radio frequency (RF) device that is in communication with an equipment or fixture such as a luminaire. Example diagnostics can determine a status such as a fixture malfunction, a cycling condition, a miswiring configuration, or another condition. The determined status can be wirelessly transmitted from the intelligent luminaire manager or other radio frequency device to a network server via a network. The network may be a network of intelligent luminaire managers and/or RF devices.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: May 14, 2013
    Assignee: ABL IP Holding LLC
    Inventors: Jeff Walters, Michael Dorogi, Szabolcs Zigovski, Voicu Cristian, Ion Ticus
  • Publication number: 20120307598
    Abstract: A power generating unit generates electric power according to light incident on a light-receiving surface. A power storage unit stores the electric power generated by the power generating unit and outputs the stored electric power. A generated-power voltage detecting unit detects the voltage of the electric power generated by the power generating unit. A stored electricity voltage detecting unit detects the voltage output from the power storage unit. A display unit displays a character or an image. The display control unit changes contents to be displayed on the display unit on the basis of the voltage of the electric power generated by the power generating unit, which is detected by the generated-power voltage detecting unit, and the voltage of the electric power output from the power storage unit, which is detected by the stored electricity voltage detecting unit.
    Type: Application
    Filed: May 24, 2012
    Publication date: December 6, 2012
    Inventor: Takanori HASEGAWA
  • Patent number: 8325412
    Abstract: A light source apparatus includes an excitation-light source, a first light guiding member and a second light guiding member which guide excitation light emitted from the excitation-light source, a wavelength converting member which is installed near an emitting end of excitation light from the excitation-light source of the first light guiding member and the second light guiding member, and which receives excitation light which has been guided by one of the first light guiding member and the second light guiding member, and emits a wavelength-converted light of a wavelength different from a wavelength of the excitation light, a first light receiving element which is installed near the wavelength converting member, and which directly or indirectly receives the wavelength-converted light of which, the wavelength is converted by the wavelength converting member, and an optical path switching section which guides the excitation light to one of the first light guiding member and the second light guiding member ac
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: December 4, 2012
    Assignee: Olympus Corporation
    Inventors: Ryo Tojo, Takeshi Ito
  • Patent number: 8232731
    Abstract: The invention relates to a method, a control system and a shed wherein the lighting is adjusted depending on the presence of an animal in a specific section of a shed. The shed is divided into a number of sections, for example a separation section. When no cows have access to the separation section and the section is therefore empty, the control system ensures that the lighting in the respective section is switched off. As the control system according to the invention controls both access to the section and lighting thereof, it is possible to dispense with movement sensors for controlling lighting in the respective sections.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: July 31, 2012
    Assignee: Lely Patent N.V.
    Inventor: Marcel Van Leeuwen
  • Patent number: 8228182
    Abstract: A self-testing notification appliance includes a notification emitter, a verification circuit, and a controller. The notification emitter is operable to output light or light and sound based on a control signal. The verification circuit includes a notification sensor to detect the light or light and sound and generate a verification signal. The controller sends the control signal to the notification emitter and receives information based on the verification signal from the verification circuit. The self-testing notification appliance may be part of a network including a fire control panel and a plurality of additional self-testing notification appliances. The self-testing notification appliances may be assigned addresses on the network.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: July 24, 2012
    Assignee: SimplexGrinnell LP
    Inventors: Todd F. Orsini, Anthony J. Capowski, Michael A. Furtado
  • Publication number: 20120146516
    Abstract: A method of manufacturing a power supply unit (PSU) is provided. The method includes providing at least one PSU supplying a dimming signal to at least one light source, performing a first test for electrical characteristics of the at least one PSU, detecting light emitted from the at least one light source, measuring a flicker of the at least one light source, and performing a second test for a state of the at least one PSU based on a flicker measurement result, and packing a PSU determined to be in a normal state among the at least one PSU, as a result of the first test and the second test.
    Type: Application
    Filed: December 9, 2011
    Publication date: June 14, 2012
    Inventors: Jin Sung Kim, Kyu Cheol Kang, Jin Woo Bae, Choul Ho Lee, Jong Yang Choo
  • Publication number: 20120126700
    Abstract: A monitoring system has integrated exit signs, which preferably have electroluminescent elements. The signs connect to internal wiring of a building, but local power sources can provide emergency power if building power is lost. Controllers on the signs communicate with a central workstation using building wiring and/or wireless communication. The controllers have one or more automated features for monitoring operation of the exit signs and the surrounding environment. These automated components, including an intensity sensor, an ambient light sensor, a temperature sensor, a smoke detector, a camera, a speaker, a microphone, a motion detector, an RFID detector, and the like. Because the signs are widely distributed throughout the building, operators can get detailed information of the building environment, security, fire, smoke, temperature, etc. The exit signs can store this information locally and can communicate useful information using a communication link to the central workstation.
    Type: Application
    Filed: November 18, 2011
    Publication date: May 24, 2012
    Inventors: Jerrold W. Mayfield, George Kasee, Jason Foringer, Samuel Kim
  • Publication number: 20120091896
    Abstract: Coded light has been proposed to enable advanced control of light sources and transmit information using light sources. It is based on invisibly embedding of data and identifiers in their light output. Methods, devices and systems configured to efficient assignment of addresses in a coded lighting system, still allowing for unique identification, are proposed. More specifically, the assignment of addresses occurs in two phases, where in the initial phase wide area unique addresses are used, while in the second phase only local area unique addresses are used. Also, methods, devices and systems configured to efficiently distribute a set of addresses over a set of light sources in this second phase, to maximize the performance of the illumination contribution estimation, and positioning, are disclosed.
    Type: Application
    Filed: April 1, 2010
    Publication date: April 19, 2012
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Tim Corneel Wilhelmus Schenk, Hongming Yang, Lorenzo Feri, Wijnand Johannes Rietman, Johan Cornelis Talstra, Johan Paul Marie Gerard Linnartz
  • Publication number: 20120074848
    Abstract: The present invention provides a method of monitoring performance of a discharge lamp. The discharge lamp includes electrodes and a discharge vessel filled with gas and equipped with a luminescent layer, wherein the gas is intended to emit a first ultraviolet light in a first spectral range when the gas is excited by an electric field produced by the electrodes, and at least part of the first ultraviolet light is intended to be changed into a second ultraviolet light in a second spectral range of longer wavelength than the first spectral range by the luminescent layer. The method comprises the steps of finding the value of a first intensity of the first ultraviolet light; finding the value of a second intensity of the second ultraviolet light; and determining the conversion efficiency of the luminescent layer for converting the first ultraviolet light into the second ultraviolet light on the basis of the ratio of the value of the second intensity to the value of the first intensity.
    Type: Application
    Filed: June 2, 2010
    Publication date: March 29, 2012
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Xiaoyan Zhu, Georg Greuel, Levinus Pieter Bakker, Cornelis Reinder Ronda, Thomas Juestel
  • Publication number: 20120068607
    Abstract: A device and method may include, in a display device, emitting visible light in a humanly imperceptible manner and sensing said light to verify operation of the display device.
    Type: Application
    Filed: September 17, 2010
    Publication date: March 22, 2012
    Applicant: SIMPLEXGRINNELL LP
    Inventor: Joseph D. Farley
  • Patent number: 8140276
    Abstract: One or more example diagnostics may be implemented as part of an intelligent luminaire manager or other radio frequency (RF) device that is in communication with an equipment or fixture such as a luminaire. Example diagnostics can determine a status such as a fixture malfunction, a cycling condition, a miswiring configuration, or another condition. The determined status can be wirelessly transmitted from the intelligent luminaire manager or other radio frequency device to a network server via a network. The network may be a network of intelligent luminaire managers and/or RF devices.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: March 20, 2012
    Assignee: ABL IP Holding LLC
    Inventors: Jeff Walters, Michael Dorogi, Szabolcs Zigovszki, Voicu Cristian, Ion Ticus
  • Patent number: 8079717
    Abstract: An information handling system projector tracks lamp usage to generate a lamp order form for order of a replacement lamp when lamp usage is a predetermined usage. The lamp order form is automatically generated and displayed to include lamp usage and projector identification information so that a user need not manually input that information into an order form. A network module of the projector supports queries for lamp usage from a lamp management module running on an information handling system. A projector processor interfaced with the network module reads the lamp usage and projector identification information from firmware of the projector and provides the lamp usage and projector identification information to the lamp management module for automatic generation of the lamp order form display.
    Type: Grant
    Filed: April 9, 2008
    Date of Patent: December 20, 2011
    Assignee: Dell Products L.P.
    Inventors: Subramanian Jayaram, Jeffrey S. Layton
  • Patent number: 8063567
    Abstract: A light output control method for a lighting system is provided. The lighting system includes a plurality of sensors and a light-emitting unit. The light output control method includes steps of: sensing a motion of an object within the sensing ranges of the sensors at different time spots, thereby generating multiple sensing values; obtaining a sensing sequence data according to the sensing values indicating the motion of the object sensed by the sensors; controlling the light-emitting unit to perform a light output control operation if the sensing sequence data complies with a predetermined condition.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: November 22, 2011
    Assignee: Lite-On It Corporation
    Inventor: Tzu-Nan Chen
  • Publication number: 20110234103
    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: Application
    Filed: December 1, 2009
    Publication date: September 29, 2011
    Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
    Inventors: Armin Konrad, Roger Hunt, Martin Zachau, Ralph Hoeck
  • Patent number: 7952291
    Abstract: A discharge lamp having a visual-change timer is described. The visual-change timer is comprised of a ceramic material that provides an indication of the cumulative operating time of the lamp. The visual-change timer is expected be a help to consumers in avoiding unnecessary, premature, and costly lamp replacement and a help to lamp manufacturers in verifying the validity of warranty claims for replacement lamps.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: May 31, 2011
    Assignee: Osram Sylvania Inc.
    Inventors: George C. Wei, Peter Niedermeier
  • Publication number: 20100264829
    Abstract: A light source apparatus includes an excitation-light source, a first light guiding member and a second light guiding member which guide excitation light emitted from the excitation-light source, a wavelength converting member which is installed near an emitting end of excitation light from the excitation-light source of the first light guiding member and the second light guiding member, and which receives excitation light which has been guided by one of the first light guiding member and the second light guiding member, and emits a wavelength-converted light of a wavelength different from a wavelength of the excitation light, a first light receiving element which is installed near the wavelength converting member, and which directly or indirectly receives the wavelength-converted light of which, the wavelength is converted by the wavelength converting member, and an optical path switching section which guides the excitation light to one of the first light guiding member and the second light guiding member ac
    Type: Application
    Filed: April 14, 2010
    Publication date: October 21, 2010
    Applicant: OLYMPUS CORPORATION
    Inventors: Ryo TOJO, Takeshi ITO
  • Publication number: 20080224618
    Abstract: A discharge lamp having a visual-change timer is described. The visual-change timer is comprised of a ceramic material that provides an indication of the cumulative operating time of the lamp. The visual-change timer is expected be a help to consumers in avoiding unnecessary, premature, and costly lamp replacement and a help to lamp manufacturers in verifying the validity of warranty claims for replacement lamps.
    Type: Application
    Filed: March 15, 2007
    Publication date: September 18, 2008
    Inventors: George C. Wei, Peter Niedermeier
  • Patent number: 7382454
    Abstract: A greater efficiency and cost-effectiveness is achieved by optically assessing the condition of a gas discharge lamp. Herein, a system and method of optically assessing lamp condition includes measuring the intensity of emitted light within two portions of the emitted spectrum. One portion of the lamp's spectrum is selected such that the intensity of emitted light from that portion remains relatively constant as the lamp ages. The second portion of the lamp's spectrum is selected such that the intensity of the emitted light varies measurably as the lamp ages. A ratio is computed between the two intensities. Comparing this ratio to a reference ratio provides information of the relative present condition (i.e., age) of the lamp being tested. Associating the lamp with location data is a further aspect. Important advantages are the ability to predict relative lamp age, and thus avoid both premature lamp replacement and pre-failure lamp cycling.
    Type: Grant
    Filed: September 24, 2006
    Date of Patent: June 3, 2008
    Inventor: Carl Anthony Turner
  • Patent number: 7377658
    Abstract: An information handling system projector tracks lamp usage to generate a lamp order form for order of a replacement lamp when lamp usage is a predetermined usage. The lamp order form is automatically generated and displayed to include lamp usage and projector identification information so that a user need not manually input that information into an order form. A network module of the projector supports queries for lamp usage from a lamp management module running on an information handling system. A projector processor interfaced with the network module reads the lamp usage and projector identification information from firmware of the projector and provides the lamp usage and projector identification information to the lamp management module for automatic generation of the lamp order form display.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: May 27, 2008
    Assignee: Dell Products L.P.
    Inventors: Subramanian Jayaram, Jeffrey S. Layton
  • Patent number: 7268497
    Abstract: A lighting device with night light and human body sensing capability includes a first illumination device, a second illumination device, a sensor and a main body. The first illumination device is designed to illuminate a local predetermined area, and the second illumination device is designed to illuminate an entire predetermined area. The sensor comprises a first sensing member and a second sensing member. The first sensing member is to detect the illumination status of the predetermined area and to activate the first illumination device. The second sensing member is to detect a human body approaching and to activate the second illumination device. The main body is provided with fixtures to dismantle a cover for replacing the second illumination device.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: September 11, 2007
    Inventor: Chin-Mu Hsieh
  • Patent number: 7119492
    Abstract: A flicker detection system according to the present invention has an AC component extracting circuit that extracts an AC signal from a voltage applied to a lamp, the AC signal being an AC component of the voltage applied to the lamp, a display section adapted for displaying the information that flicker has occurred, and a control section that has a reference voltage registered in advance for determining that flicker has occurred and instructs the display section to display the information that flicker has occurred in the lamp, depending on the result of comparison between the reference voltage and the AC signal received from the AC component extracting circuit.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: October 10, 2006
    Assignee: NEC Viewtechnology, Ltd.
    Inventor: Atushi Kuroda
  • Patent number: 7081713
    Abstract: A light grid is provided for the detection of objects in a monitoring region having a transmitter unit comprising a plurality of light transmitters and a receiver unit comprising a plurality of light receivers in which respective pairs of light transmitters and light receivers associated with one another and bounding the monitoring region can be activated in succession in time in dependence on a synchronization signal transmitted between the transmitter unit and the receiver unit, with at least one light guide being provided for the transmission of the synchronization signal.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: July 25, 2006
    Assignee: Sick AG
    Inventors: Heiner Jürs, Otto Görnemann
  • Patent number: 6963170
    Abstract: The present invention discloses a lamp comprising a lamp housing mounting an electrically driven light and a monitor circuit, the housing having power supply terminals for connection of the light to a power supply and the monitor being connected to the light such as to monitor its operation while the lamp is connected to the power supply and to provide an output indicating whether the light is functioning.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: November 8, 2005
    Assignee: Tapeswitch Ltd.
    Inventor: Christopher Higgins
  • Patent number: 6909239
    Abstract: A dual LED and incandescent security lighting system uses a hybrid approach to LED illumination. It combines an ambient LED illuminator with a standard incandescent lamp on a motion control sensor. The LED illuminator will activate with the onset of darkness (daylight control) and typically remain on during the course of the night (“always on”). The LED illumination, typically amber, is sufficient to provide low to moderate level lighting coverage to the wall and ground area adjacent to and under the fixture. The incandescent lamp is integrated with a motion control circuit and sensor. When movement in the field of view is detected (after darkness), the incandescent lamp is switched on, providing an increased level of illumination to the area. Instead of an “always on” LED illuminator, the LEDs may also be switched off when the incandescent lamp is switched on.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: June 21, 2005
    Assignee: The Regents of the University of California
    Inventor: Kevin Wayne Gauna
  • Patent number: 6894434
    Abstract: A nightlight and control unit comprises a nightlight housing including an illumination member and a control unit associated with the nightlight housing for regulating light in a light device connectable to the control unit. An input mechanism is provided for programming the control unit.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: May 17, 2005
    Inventor: Richard S. Kosoff
  • Patent number: 6717660
    Abstract: A light monitoring system provides a sensing unit coupled to a luminaire. The sensing unit monitors both the input and the output of the luminaire for both current and voltage. In this manner, a variety of problems with the luminaire can be detected by the sensor and this information can be passed to monitoring equipment that is either hard-wired or remotely coupled to the sensing unit.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: April 6, 2004
    Assignee: Safe Passage Systems Corporation
    Inventor: James S. Bernardo
  • Publication number: 20030080686
    Abstract: A light control device and method are provided for receiving an audible signal from an audio speaker and outputting a light control signal, whereby the light control signal controls the illumination of a light source placed near the audio speaker.
    Type: Application
    Filed: March 27, 2002
    Publication date: May 1, 2003
    Applicant: Roadmaster (USA) Corp.
    Inventor: Mervin A. Dayan
  • Patent number: 6531832
    Abstract: In a discharge lamp, at least one of two main electrodes disposed at both ends of the discharge lamp includes one main electrode that comprises a sintered metal member having a slope with respect to another main electrode. A tip of the slope is positioned within a space covered by a trigger electrode coated on an outer surface of the discharge lamp in a limited area with respect to the entire circumference of a bulb of the lamp. This structure allows the discharge lamp to emit light at a stable level constantly. An electronic flash device using this discharge lamp can emit the light precisely.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: March 11, 2003
    Assignee: West Electric Co., Ltd.
    Inventors: Shinji Hirata, Haruhiko Yuhara
  • Publication number: 20020140360
    Abstract: A remote control system for testing the ready status of lighting fixtures such as emergency exit signs and for operating such fixtures as by controlling the off/on status and dimming of the illumination in a high infrared and EMI noise environment. The transmitted control signal is an infrared beam containing a selected pulse-time code which the receiving circuit can reliably receive, recognize and process in an environment of high infrared noise typically produced by fluorescent lighting. Upon recognition and verification of the selected pulse-time code, in the ready status testing, the microcontroller disenables the charging circuit to the battery for supplying power to the exit sign in the emergency mode to cause the emergency circuit to sense an AC power failure whereby the lamp illuminates in the emergency mode for the selected test period.
    Type: Application
    Filed: February 15, 2002
    Publication date: October 3, 2002
    Inventor: David B. Crenshaw
  • Patent number: 6246433
    Abstract: A film image capturing method of reading a continuous developed film with a line sensor. This method comprises the steps of: pre-scanning for determining exposed conditions, including brightness, of each of the plurality of frames on the film; index scanning for capturing rough image data from each of the plurality of frames on the film under capturing conditions being adjusted according to the exposed conditions of the frame which are determined in the pre-scanning, and producing an index image showing all or selected frames of the plurality of frames on the film; main scanning for capturing fine image data from a desired frame of the plurality of frames on the film under the capturing conditions being adjusted according to the exposed conditions of the desired frame which are determined in at least one of the pre-scanning and the index scanning.
    Type: Grant
    Filed: March 4, 1998
    Date of Patent: June 12, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Mikio Sasagawa
  • Patent number: 6024831
    Abstract: A method and apparatus for monitoring condition of the plasma of a plasma process during processing is disclosed. A spectrum detector (12) detects the intensity of a predetermined wavelength of radiation produced by the plasma process. The output of the spectrum detector is sampled, filtered, and normalized. A parameter calculator (20) calculates a parameter such as velocity or acceleration of the intensity. The calculated parameter is compared to a predetermined threshold. If the parameter exceeds the predetermined threshold, an error condition is indicated.
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: February 15, 2000
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Yuan-Ko Hwang, Ying-Chen Chao
  • Patent number: 5929781
    Abstract: An system is provided for testing emergency lighting units using a receiver connected to the emergency lighting unit and a portable transmitter operable remotely with respect to the emergency lighting unit. The emergency lighting comprises a transfer relay for switching a battery between a primary power source and a lamp. A TEST button and the receiver each include a normally closed contact switch connected in series with each other, as well as with a primary power source input and transfer control circuitry. The transmitter generates encoded signals for wireless transmission to the receiver as long as a control switch on the transmitter is being activated by a user. The receiver receives and decodes the encoded signals and opens its normally closed relay as long as encoded signals are being received, causing the transfer control circuitry to activate the transfer relay to switch the battery from the primary power source to the lamp.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: July 27, 1999
    Assignee: Hubbell Incorporated
    Inventor: David A. Vosika
  • Patent number: 5449976
    Abstract: A control unit for controlling a strobe light or the like, in particular for use in an alarm system or an emergency locator, is characterized in that a direct current power supply unit is provided which is activated to drive the strobe light when an external power supply unit which is adapted to drive the strobe light is deactivated.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: September 12, 1995
    Inventors: Raymond J. Kemp, Susan E. Leighton, Philip D. Hawkins
  • Patent number: 5440207
    Abstract: A reference light source device includes a first laser diode emitting a reference light, a harmonic generating unit for generating an nth harmonic of the reference light, where n is an integer, a light generating unit for generating a light signal having a waveform equal to that of the nth harmonic of the reference light, and a photodetector for combining the nth harmonic and the light signal and for generating a first electric signal corresponding to a beat signal obtained by combining the nth harmonic and the light signal. Further, the source device includes a local signal generating unit for generating a local signal, a phase comparator for generating a control signal corresponding to a phase difference between the first electric signal and the local signal, and a driving unit for driving the first laser diode according to the control signal so that a frequency of the beat signal is equal to that of the local signal.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: August 8, 1995
    Assignee: Fujitsu Limited
    Inventor: Kazue Otsuka
  • Patent number: 5416385
    Abstract: An apparatus and method of controlling the light intensity in a light source of variable emission affected by a drive signal. Spatial optical integration based upon light summation is incorporated into the accompanying encasement device at a backlight source by means of a light source support structure that allows light not directed toward a viewed surface, such as an LCD, to serve as a control input to the light drive signal.
    Type: Grant
    Filed: September 2, 1993
    Date of Patent: May 16, 1995
    Assignee: Rockwell International Corp.
    Inventor: Ronald M. Hau
  • Patent number: 5336976
    Abstract: A method for determining when overall lamp intensity is stable for a lamp in a document scanner. The intensity of a relatively small portion of the lamp is controlled as part of a closed loop intensity control system. During a warm-up transient period, the intensity of the small portion of the lamp is monitored and power to the lamp is monitored. A changing power to the lamp indicates that the overall lamp intensity has not stabilized. Scanning is initiated when the intensity of the monitored portion of the lamp is within a predetermined control range and the power to the lamp has stabilized for a predetermined time period. The predetermined time period can be a default value or can be determined by a user.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: August 9, 1994
    Assignee: Hewlett-Packard Company
    Inventors: Steven L. Webb, Kevin J. Youngers