Patent application number | Description | Published |
20110089853 | ELECTRONIC DRIVER APPARATUS FOR LARGE AREA SOLID-STATE LEDS - An electronic driver apparatus is provided for driving power an organic LED, including a switchable inductance circuit and a controller to connect an inductance between a power source and the OLED during a startup period as power is first applied to the OLED. | 04-21-2011 |
20110089855 | KNOWLEDGE-BASED DRIVER APPARATUS FOR HIGH LUMEN MAINTENANCE AND END-OF-LIFE ADAPTATION - A knowledge-based driver is provided for powering a solid-state light source with a constant current, including a memory that stores lumens per amp and volts per amp performance characterizations of the light source over time, and a controller that operates in a test mode to estimate the light source degradation based on voltage feedback obtained at a predetermined test current value, and to adjust the drive current in normal operating mode according to the estimated device degradation to implement constant lumens control without external optical feedback components. | 04-21-2011 |
20110089867 | HIGH EFFICIENCY LOW POWER CAPACITOR CHARGED DC DRIVER - A high efficiency low power DC driver apparatus is presented for powering a light source, with a capacitive divider circuit receiving an AC input and providing a divided AC output, a rectifier provide a DC output below ten watts, output terminals coupleable to one or more light sources, and a linear regulator coupled in series with the light source to regulate a drive current flowing through the series circuit. | 04-21-2011 |
20110140626 | ELECTRONIC DRIVER DIMMING CONTROL USING RAMPED PULSED MODULATION FOR LARGE AREA SOLID-STATE OLEDS - An electronic driver apparatus and methods are disclosed for driving power an organic LED or other large area solid state light source, in which a switch mode DC current source provides DC current to drive the light source according to a control input and a controller provides a ramped pulse modulated control input to the current source for at least some values of a dimming setpoint signal or value to mitigate damaging current spikes by controlling di/dt of the drive current. | 06-16-2011 |
20110147768 | ORGANIC LIGHT EMITTING DEVICE CONNECTION METHODS - A light panel includes a light source having a generally planar, light emitting surface and a perimeter edge. A backsheet is disposed in substantially parallel relation with the light emitting surface, and an electrical feed-through region extends through the backsheet at a location spaced inwardly from the perimeter. A generally planar, flexible connector cable extends over the backsheet from the perimeter to the electrical feed-through region for establishing electrical connection with the light source. Openings in conductive pads provided in the flexible cable permit a conductive material to be inserted there through and mechanically and electrically interconnect the cable and the light panel. | 06-23-2011 |
20120256813 | LOW TEMPERATURE CONTACT STRUCTURE FOR FLEXIBLE SOLID STATE DEVICE - A lighting assembly includes a light source having a first generally planar, light source including a perimeter edge. A backsheet is disposed in substantially parallel relation with the light source, and includes at least one electrical feedthrough region extending through the backsheet and substantially covered by a contact patch disposed in substantially planar relation between the backsheet and the light source. A generally planar, connector cable extends over the backsheet and has connector pad(s) positioned thereon to associate with each feedthrough and to the light source through the contact patch. A low temperature solder material is disposed between each connector pad and contact patch for establishing electrical connection with the light source, wherein one or more of the light source, connector cable, backsheet, or any portion thereof is constructed of one or more plastics. | 10-11-2012 |
20120280636 | SELF-DIMMING OLED LIGHTING SYSTEM AND CONTROL METHOD - Lighting devices and operating methods are presented in which voltage or current perturbations of an OLED caused by a user pressing the OLED are monitored while the OLED is providing general lighting, and one or more lighting control signals are generated based on the sensed perturbations. | 11-08-2012 |
20120283878 | CONTROLLER AND SOLID STATE LIGHTING DEVICE FOR LARGE AREA APPLICATIONS - Flexible and shape adjustable solid state lighting devices and control circuits are presented in which the control circuit selectively phase cuts AC power supplied to the lighting device to send a plurality of data symbols of a message to the lighting device indicating a physical adjustment command or value, and an actuator selectively sets or adjusts a physical condition of the lighting device according to the message. | 11-08-2012 |
20120286680 | ISOLATED CAPACITOR DRIVE CIRCUIT FOR THIN-FILM SOLID-STATE LIGHTING - Solid-State lighting devices and fixtures are presented in which capacitor plates are formed in the fixture and in the lighting device to form AC coupling capacitors with one or more intervening dielectrics when the lighting device is placed in the fixture to power a driver circuit of the lighting device while providing a fixture with no exposed live wiring. | 11-15-2012 |
20120326508 | LED ARRAY AUXILIARY POWER SUPPLY - A method and apparatus for providing one or more operating voltages and currents to one or more auxiliary loads by tapping an LED array driven by an LED driver providing a drive voltage to the LED array, and/or supplying an operating voltage to the LED driver itself using such a tap. | 12-27-2012 |
20130015768 | HIGH VOLTAGE LED AND DRIVERAANM ROBERTS; Bruce RichardAACI Mentor-on-the-LakeAAST OHAACO USAAGP ROBERTS; Bruce Richard Mentor-on-the-Lake OH USAANM Nerone; LouisAACI BrecksvilleAAST OHAACO USAAGP Nerone; Louis Brecksville OH US - A method and apparatus for providing illumination by driving LEDs using a high-voltage driver, and more specifically a method and apparatus for using a simplified boost circuit connected to an AC mains to provide a higher voltage DC driving voltage to the LED array. | 01-17-2013 |
20130113389 | LIGHTING DEVICE INCLUDING A DRIVE DEVICE CONFIGURED FOR DIMMING LIGHT-EMITTING DIODES - A lighting device with a drive device for dimming light-emitting diodes. The drive device comprises a dimming component that operates a switch in response to both a change in an input power signal and a system temperature. In one example, the dimming device can include a waveform generator that generates a signal with a waveform having levels that change in response to changes in temperature. The waveform defines the time during which the switch is open and closed, thereby determining the period of time the LEDs are energized. By operating the LEDs in this manner, the drive device effectively dims the LEDs to reduce the operating temperature and cool the LEDs. | 05-09-2013 |
20130257288 | LIGHTING SYSTEM HAVING AN OLED LIGHT SENSOR - An apparatus and method of detecting ambient light in a lighting system is provided. An OLED may be used to emit light and detect ambient light in such a system. Detection can occur during a time interval when light is not emitted from the OLED. Feedback to control the emitted light level of the OLED can be based on the detected ambient light. | 10-03-2013 |
20140103812 | Rolling Blackout Adjustable Color LED Illumination Source - A system and method for producing white light in an adjustable light emitting diode (LED) illumination device is provided. The system and method varies the “off” time for one of multiple sets of light emitting diodes (LEDs) or channels in succession in order to compensate for and stabilize the color-shifting or degradation that gradually occurs in LEDs. Each channel corresponds to a different color. By varying the “off” time of only one channel at a time, the system efficiently utilizes the majority of the LEDs, thereby enabling the production of a more stable white light with fewer LEDs. | 04-17-2014 |
20140159573 | LAMP COMPRISING ACTIVE COOLING DEVICE FOR THERMAL MANAGEMENT - Embodiments of a lamp comprise a light source and an active cooling device that propagates airflow within the lamp to dissipate heat from the light source. In one embodiment, the lamp comprises a light emitting diode (LED) device and an inductor that couples in series with the light emitting diode (LED) device. The lamp also comprises a diaphragm magnetically coupled with the inductor, wherein the diaphragm can flex between a first position and a second position to generate the air flow. | 06-12-2014 |
20150061497 | THREE-WAY LAMP WITH PROGRAMMABLE OUTPUT LEVELS - A lamp including a lamp base having at least three electrical contacts, an optical housing with an LED light source distal from the lamp base, a capper assembly including two or more bias switches accessible by a user located between the lamp base and optical housing , electronic circuitry located within the capper assembly, the electronic circuitry electrically coupled to the three electrical contacts and the LED light source, the electronic circuitry configured to provide a drive current to the LED light source, and the two or more bias switches are user-settable to set the drive current. The electronic circuitry provides at least two different levels of drive current to the LED light source, where the two or more bias switches are configured to control multiple levels of LED light intensity to an individual level. | 03-05-2015 |