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| Number | Title | Issue Date |
| 8076858 | Light sensing apparatus and method for luminaire calibration A light sensing apparatus and method for luminaire calibration are provided. Since the lighting frequencies of LEDs are modulated in sequence and a light sensing unit is activated and deactivated periodically, the light intensity received from each LED channel can b... | 12/13/2011 |
| 7952292 | Illumination control Controlling a lighting system, which comprises a controller (2, 10), lighting units (6), and a sensing device. Each lighting unit comprises a lighting source (12) and a modulated light source (14). A single light source may be used to fun... | 05/31/2011 |
| 7378630 | Light emitting unit and imaging apparatus A light emitting unit which radiates auxiliary light to a subject to be imaged, said light emitting unit comprising: a plurality of light emitting elements disposed so as to have radiation areas different from each other, said ligh... | 05/27/2008 |
| 7271543 | Method for providing bi-level illumination in a stair well A bi-level illumination system for power conservation correlated to the needs of a building stairwell, which even during work hours is only nominal functioning as it does as a back-up to elevator-provided access to work areas, and requiring high level illumination d... | 09/18/2007 |
| 7210798 | Image projection lighting device and control system The methods and apparatus for lighting systems provide a camera integral to a particular image projection lighting device (IPLD) to capture the projected image from the particular IPLD. The captured image can then be sent over a communication system to the operator ... | 05/01/2007 |
| 7183718 | Light-emitting device A light-emitting device includes a plurality of light-emitting elements, particularly three light-emitting diodes and one phototransistor, and acquires excellent white color characteristics. A plurality of light-emitting elements and one light-detecting element are ... | 02/27/2007 |
| 7042492 | Automatic door assembly with video imaging device An automatic door assembly for installation at a doorway formed through a wall of a building and for use in conjunction with a video device that is (a) capable of receiving a video data signal from a video imaging device monitoring a field of view and (b) processing... | 05/09/2006 |
| 6953253 | Vehicle photosensing control system A vehicle photosensing system includes a photosensor array that is disposed within the interior cabin of the vehicle and having a field of view forward through the windshield of the vehicle. The photosensing system further providing a control for either controlling ... | 10/11/2005 |
| 6951402 | Refrigeration appliance interior lighting system A refrigeration appliance interior lighting system for sensing the exterior light level and adjusting the light level accordingly within the interior of the home appliance. The refrigeration appliance interior lighting system includes a control unit in electrical co... | 10/04/2005 |
| 6930456 | Method and apparatus for controlling images with image projection lighting devices A lighting system includes a central controller and multiparameter lights, including IPLDs. A display of the multiparameter lights at the central controller includes the IPLDs and their image parameters, which are used to evoke a display of graphics tools at the cen... | 08/16/2005 |
| 6917163 | Inductively powered lamp assembly A lamp assembly configured to inductively receive power from a primary coil. The inductively powered lamp assembly includes a lamp circuit including a secondary and a lamp connected in series. In a first aspect, the lamp circuit includes a capacitor connected in ser... | 07/12/2005 |
| 6859644 | Initialization of wireless-controlled lighting systems A method of initializing system components of a wireless-controlled lighting system. The system components include a remote control and a plurality of lighting units which communicate with a control master for the system via commonly-received radio communications. I... | 02/22/2005 |
| 6841945 | Lighting control system and method An energy-saving lighting control system for controlling a series of banks of lights in an area. The system activates less than all of the series of banks of lights upon entry into the area, regardless of the last light-activating setting selected by a user. ... | 01/11/2005 |
| 6023224 | Door frame with integrated keyless entry system An entry control and security system in the form of a pre-assembled door and door frame unit having an electric light, a motion detector, a radiant energy receiver and an electromechanically actuated latch all disposed on and built into the door frame. Th... | 02/08/2000 |
| 5990628 | Light level sensor for detecting the level of incident light and discriminating between natural and artificial light A light level sensor for use in controlling the switching of artificial lighting. The sensor comprises a photoelectric transducer which provides an output signal at a level which is significant of the illumination level of incident light. An A-D converter... | 11/23/1999 |
| 5661468 | Radio paging electrical load control system and device A system for remote control of electrical load devices, particularly electrical lighting where the commands are broadcast over a radio pager system. A radio pager receiver is located within or nearby the electrical light fixture and is normally in a stand... | 08/26/1997 |
| 5455487 | Moveable desktop light controller A device for controlling power to an electrical load. The device has two components: a portable desktop detector unit and a wall-mounted receiver unit. The desktop detector detects the presence of a human in a room and the ambient light level and sends si... | 10/03/1995 |
| 5083063 | Radiation generator control apparatus Apparatus for controlling operation of a number of radiation generator assemblies comprises a store for storing calibration values for respective assemblies, respective switches, a digital to analogue converter (D/A) and control means. The switches are co... | 01/21/1992 |
| 5079485 | Ballast for supplying a plurality of discharge lamps A device which enables a plurality of discharge lamps that are connected to a common ballast to be turned on and off separately via external switches. The operation circuit of the ballast is connected to the external switches through decouplers. The opera... | 01/07/1992 |
| 5072154 | Automatic luminosity control device for car and motor bicycle headlamps A luminosity control device includes a photosensitive member to control the duty cycle of a square wave pulse oscillator. Then a high power switching tube and a high power gain tube are used to proceed with the luminosity control. Thus, when two cars meet... | 12/10/1991 |
| 4971405 | Photoelectrically controlled corner light system for a vehicle A photoelectrically controlled corner light system for a vehicle includes corner lights adjacent to headlights which are disposed in the right and left corners of the vehicle. The corner lights switched by operating a headlight turn lever are connected to... | 11/20/1990 |
| 4959755 | Automatic battery powered video light An automatic battery powered video light (10) is supplied power by a d.c. battery (16). A light (20) is connected between a first terminal of the battery (16) and a MOSFET switch (46), which is connected to a second terminal of the battery (16). A control... | 09/25/1990 |
| 4922154 | Chromatic lighting display A chromatic lighting display utilizes a plurality of light-producing elements positioned to be visually accessed by a user, the elements arranged in co-extensive and diverse positions, controlled in light-emitting intensities and colors by a centrally loc... | 05/01/1990 |
| 4843283 | Infrared ray detector control illumination system An illumination control system has a plurality of infrared detection systems located in a plurality of adjacent scanning areas. Each of the detection systems controls the activation of light sources located in two or more scanning areas. Each of the detec... | 06/27/1989 |
| 4629941 | Differential illumination sensitive switching circuit A first phototransistor (20, 20') is mounted on the structure such as a home (12) or a garage (14) to sense the level of ambient illumination. A second phototransistor (22, 22') senses both the level of ambient illumination and illumination from the headl... | 12/16/1986 |
| 4492896 | Electronic candle system The present invention relates to an array of simulated candles, utilizing light bulbs, which allows the user to turn on any selected light bulb merely by pointing a wand close to the light bulb to be turned on. Once turned on the light bulbs are caused to... | 01/08/1985 |
| 4357558 | Automatic control device for lighting and extinction of headlamps in a vehicle An automatic control device for the lighting and extinction of headlamps of car, comprising at least two photo-sensitive elements connected to control circuits defining luminosity thresholds to produce control signals depending on ambient luminosity, and ... | 11/02/1982 |
| 4242614 | Lighting control system System for controlling operation of a plurality of gaseous discharge lamps for selectively turning on or off one or more of the lamps and producing desired lumen output of the lamps as needed, to provide for conservation of electrical energy. In the syste... | 12/30/1980 |
| 4227119 | Controlled lighting device A lighting device in which an amount of light emitted by a lamp is detected by a light receiving element for controlling the input voltage of the lamp commensurate with the detected amount of light. By utilizing a pre-illumination system in conjunction wi... | 10/07/1980 |
| 4191912 | Distributorless ignition system A distributorless ignition system has an alternating current power source for providing power to fire the igniters. The alternating current power source is coupled through a capacitor to a plurality of ignition transformers, one transformer for each ignit... | 03/04/1980 |
| 4176297 | Ultra violet initiated gas discharge visual display matrix A large area visual display matrix of ultra-violet initiated individual small gas discharge elements. Each element remains in a discharge condition until the voltage applied to a common anode is turned off and for this reason the matrix requires no associ... | 11/27/1979 |
| 4158803 | Switching high voltage power supply A circuit to provide a fast convenient means of amplifying a low level analog/digital signal to very high voltage to drive a large capacitance of a multi-colored cathode ray tube. The circuit employs two high voltage/frequency planar triodes to source and... | 06/19/1979 |
| 4155029 | Auxiliary electronic flash apparatus An auxiliary electronic flash apparatus coactuable with a main electronic flash apparatus of the type having a first flash lamp for converting the energy stored on a first main capacitor into light for illuminating a subject, and a control circuit for tur... | 05/15/1979 |
| 4140946 | Transient modulation ignition system An ignition system makes use of the Kettering transient voltage induced into the primary winding of an ignition transformer and utilizes a circuit which provides several voltage transients which are intermodulated to provide extremely high energy levels a... | 02/20/1979 |
| 4122334 | Illumination control apparatus for compensating solar light Illumination control apparatus for supplementing light from solar radiation with light from an artificial light source to compensate for periods of insufficient levels of solar light to maintain a desired illumination level within an interior space compri... | 10/24/1978 |
| 4095139 | Light control system A light control system for selectively controlling the light intensity levels of a plurality of light groups, each group including one or more lights, is disclosed. The system comprises a control for generating a parallel binary-coded signal representativ... | 06/13/1978 |
| 4091441 | Full-spectrum luminaire An improved full-spectrum luminaire utilizing a plurality of gas discharge lamps at least one of which produces radiant energy primarily in the near-ultraviolet range and another produces radiant energy primarily in the visible range. The spectral energy ... | 05/23/1978 |
