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| Number | Title | Issue Date |
| 8436542 | Integrated lighting system and method System and method are provided where a plurality of luminaires, control switches, occupancy detectors, and photocells are connected to a central control module including a user interface which is used for setting up, testing, commissioning and maintaining the system... | 05/07/2013 |
| 8432099 | Systems and methods for controlling brightness of cold-cathode fluorescent lamps with wide dimming range and adjustable minimum brightness System and method for adjusting brightness of one or more cold-cathode fluorescent lamps. The system includes a voltage selector configured to receive a dimming voltage and a first threshold voltage and generate an output voltage. The output voltage is selected from... | 04/30/2013 |
| 8410707 | Duty cycle adjusting circuit of a lighting system and method thereof The present disclosure relates to a duty cycle adjusting circuit of a lighting system and method thereof for sensing light of a first color and a second color emitted by a light emitting device of the first color and a light emitting device of the second color to ge... | 04/02/2013 |
| 8400066 | Magnetic logic circuits and systems incorporating same Logic circuits based, at least in part, on use of spin-torque transfer (STT) to switch the magnetization—and hence the logic state—of a magnetic material are disclosed. Aspects of the invention include novel STT-based switching devices, new configurations of kno... | 03/19/2013 |
| 8395324 | Light emitting system with dual use light element A solution is provided in which one or more of a plurality of light elements is alternately operated as a light emitting element and a light detecting element. For example, a system can operate a light element as a light detecting element while operating at least on... | 03/12/2013 |
| 8368310 | System and method for distributed lighting device control A system for distributed light control, including a light circuit, a first device associated with the light circuit, a second device associated with the light circuit, a network communicatively connecting the light circuit, the first device, and the second device, w... | 02/05/2013 |
| 8319440 | Direction controllable lighting unit A direction controllable lighting unit (10) and use thereof in a lighting system (40) are described. A lighting unit (10) has means (16) for directing the light emission (22) into different directions. A plurality of light sources ... | 11/27/2012 |
| 8299718 | Constant temperature LED driver circuit A constant temperature LED driver circuit for controlling the rate of lumen depreciation and therefore useful lifetime of an LED array by keeping the LEDs at a fixed temperature. A temperature sensing means, which measures the temperature of the LEDs, is coupled to ... | 10/30/2012 |
| 8288951 | Organic light emitting diode lighting systems A lighting system includes a plurality of organic light emitting diode (OLED) devices. By selecting the plurality of OLED devices, or by selectively controlling the plurality of OLED devices, the color characteristics of the lighting system can be tuned. The lifetim... | 10/16/2012 |
| 8258709 | LED control using modulation frequency detection techniques In one embodiment, the present disclosure provides a method for controlling a plurality of LED channels. The method includes receiving an LED brightness signal having a plurality of superimposed pulse width modulated (PWM) brightness signals each having a duty cycle... | 09/04/2012 |
| 8247979 | Light-guide device and mounting assembly using same A light-guide device is provided for detecting and amplify the light emitted by indicator lamps of functional modules mounted in a chassis. The light-guide device includes a plurality of light-guide columns, a circuit board, and a plurality of light-guide blocks. Th... | 08/21/2012 |
| 8227995 | Sensing coded light using retro reflectors This invention relates to a luminaire comprising a light source emitting output light, and a detector unit, which is arranged to detect received light emanating from a remote reflection of said output light, wherein the detector unit comprises a first identifier, wh... | 07/24/2012 |
| 8207676 | Ambient light compensation sensor and procedure The present invention relates to a solid-state based light source, a corresponding circuitry and a method of emitting light, including one or more light source elements for generating light, a first sensor for receiving light emitted by the light source elements and... | 06/26/2012 |
| 8143791 | Control system for light-emitting device A control system for a light-emitting device may include test circuitry, photodetectors, and process circuitry. The test circuitry is configured to sequentially drive individual groups of light-emitting elements in a light-emitting device during a test sequence. Eac... | 03/27/2012 |
| 8115398 | System and method for performing an illumination copy and paste operation in a lighting system The invention relates to copying light conditions from one location and pasting into or providing similar light conditions to another location in a lighting system. A light detector (20) is provided which comprises a first sensor (50) configured to rec... | 02/14/2012 |
| 8110995 | Illumination system comprising a plurality of light sources An illumination system (1) comprises a plurality of light sources (11, 12, 13), each provided with a driver (21, 22, 23); a controller (30) for generating control signals (Sc1, Sc2>Sc3) for controlling the... | 02/07/2012 |
| 7825602 | Outdoor lighting system with controlled luminance An outdoor lighting system comprises an outdoor light source, a luminance control device, a detection apparatus, a communication network and a main controlling system. The detection apparatus is configured for detecting a luminance of the light source and generating... | 11/02/2010 |
| 7804252 | Two way lighting control system with dual illumination sources A two way lighting control system with dual illumination sources, including a lighting unit, a photocell, a motion sensor, and at least one light source base. The lighting unit includes two light source loads. The high wattage light source load is the first light so... | 09/28/2010 |
| 7429827 | Solar powered light assembly to produce light of varying colours A garden light 10 having a body (11) with a post (12), the lower end of which is provided with a spike (13). The upper end of the post (11) receives a lens assembly (12). Secured to the lens assembly (12) is a cap ass... | 09/30/2008 |
| 7397205 | Illumination brightness and color control system and method therefor An illumination brightness and color control system for adjusting the illumination of a plurality of point light sources and method therefor are provided, implemented in a time division manner. A single photosensor senses and samples a point light source for the lum... | 07/08/2008 |
| 7307384 | Circuit having a second ac/dc converter A circuit includes a converter for converting an a.c. voltage into a d.c. voltage. The converter has a diode half-bridge, a switch half-bridge, and two d.c. rails. Further, the converter has a second converter for converting the a.c. voltage into a second d.c. volta... | 12/11/2007 |
| 7231060 | Systems and methods of generating control signals Separating a source in a stereo signal having a left channel and a right channel includes transforming the signal into a short-time transform domain; computing a short-time similarity measure between the left channel and the right channel; classifying portions of th... | 06/12/2007 |
| 7108413 | Sampling for color control feedback using an optical cable Light is mixed within a mixing cavity. Light is transported from the mixing cavity, through an optical cable, to a color sensor. The transported light is sampled by the color sensor. Light color within the mixing cavity is controlled based on information from the tr... | 09/19/2006 |
| 7045974 | LED optical energy detection and feedback system A system for the throughput detection and feedback of optical energy for making sure of white balance of the LED array in a flat fluorescent light source when the LED array in emitting light by respectively connecting in series a selected LED lamp respectively from ... | 05/16/2006 |
| 7038398 | Kinetic illumination system and methods The present invention relates to methods of creating eye-catching displays by taking advantage of color-changing illumination provided by LED systems disclosed herein. Displays can be made to appear to change color or to move simply by changing the color of the ligh... | 05/02/2006 |
| 7038399 | Methods and apparatus for providing power to lighting devices Methods and apparatus for providing power to devices via an A.C. power source, and for facilitating the use of LED-based light sources on A.C. power circuits that provide signals other than standard line voltages. In one example, LED-based light sources may be coupl... | 05/02/2006 |
| 7034950 | Laser grid for measuring distance The laser grid (1) permits a single-sided installation in order to record a person or object in the monitoring area. The grid operates using punctiform sensor units (3), each including at least one laser diode and two photosensitive pixels. The sensor ... | 04/25/2006 |
| 6995525 | Light display with color and clear lights A light display power box receives a string of clear and a string of colored lights thereby displaying clear and colored lights simultaneously to form selected light display patterns. The light display power box includes a plurality of outlets for receiving at least... | 02/07/2006 |
| 6984944 | Controlling device for use with exterior landscape lighting assemblies A controlling device for use with an exterior landscape lighting assembly. The lighting assembly includes a transformer having an input line connected to an electrical power source. The transformer converts a primary electrical load to a secondary electrical load wh... | 01/10/2006 |
| 6969954 | Automatic configuration systems and methods for lighting and other applications A system and method for automatic configuration of devices that comprises a receiver for receiving information from a device that uniquely identifies the device, a controller capable of assigning an address to the device, and a communication link for transmitting sa... | 11/29/2005 |
| 6880957 | Lighting apparatus with electronic shadow compensation An electronic lighting apparatus with at least one multiple position adjustable lighting pod. Each lighting pod includes at least one variable intensity light source and a proximity sensor for detecting objects interposed between the lighting pod and a work field. E... | 04/19/2005 |
| 6577067 | Switching system using laser induced discharge A switching system using laser induced discharge is provided which is capable of reliable switching with a simple structure, multiple switching for a number of circuits, good synchronization and no switching time delay among circuits. In the switching sys... | 06/10/2003 |
| 6097302 | System and method for monitoring a plural segment light-emitting display A monitoring system for a display unit includes phototransistors for detecting light emitted from a plurality of selectively energizable light-emitting diode (LED) segments in an energized state and for generating a voltage which is representative of the ... | 08/01/2000 |
| 5828178 | High intensity discharge lamp color Apparatus for monitoring and controlling the operation of one or more high intensity discharge (HID) lamps. An electronic HID lamp power supply is electrically connected to a power source and to the HID lamps. For each lamp, one or more sensors produce on... | 10/27/1998 |
| 5633565 | Electronic flasher circuit An electrical flasher circuit has improved operating characteristics, in particular by providing continuous illumination for a long period of time from a fully charged solar battery. The circuit employs a solar battery recharging circuit component that ac... | 05/27/1997 |
| 5453731 | Automotive switch lighted with integral diodes A two color, light emitting diode having a green diode and a red diode therein is incorporated with a control switch for an automotive accessory. The control switch is normally green in color providing a finger target when the system is not operated becau... | 09/26/1995 |
| 5418432 | Variable color luminaire A variable color luminaire is arranged for controlling a plurality of light sources of different emission colors to be at predetermined dimming levels by means of dimmers, performing a comparison operation to obtain a quantity-of-light ratio and a referen... | 05/23/1995 |
| 5280220 | Remote controlled, solar and battery powered lights An electrical device such as a lamp is energized and deenergized remotely by a system in which pulses of different duration are transmitted to a receiver unit capable of discriminating between the length of the pulses in order to switch between an "on" mo... | 01/18/1994 |
| 5149187 | Lighting system for use in vehicle cabin A lighting system for use in a vehicle cabin comprises a plurality of first lamps which are arranged between a roof and a plane including an eye point of a seat occupant for illuminating predetermined surfaces, and at least one second lamp for illuminatin... | 09/22/1992 |
| 5068767 | Automatic focus position adjusting unit for use in shadowless lighting device An automatic focus position adjusting unit for use in a shadowless lighting device for medical purposes includes a sensor, a start switch, a start processor, and a direction adjuster. The unit also includes a focus mover, a peak detector, and an adjustmen... | 11/26/1991 |
