Abstract: A power supply device includes a power supply input portion, a rectification portion, a smoothing portion, a power conversion portion, a power supply output portion, a signal input portion, a control portion, a circuit substrate, and a case. The circuit substrate is formed in an elongated rectangular plate-like shape. The power supply input portion is mounted on a first end portion of the circuit substrate in a longitudinal direction. The rectification portion, the smoothing portion, the power conversion portion, the control portion, and the power supply output portion are mounted on the circuit substrate in the stated order from the first end portion toward a second end portion in the longitudinal direction. The signal input portion is mounted at a position closer to the second end portion than the rectification portion in the circuit substrate.

Abstract: An auto-sensing dimming lamp guides ambient light to a sensor installed in a lamp cover and at a base through a light pipe. The auto-sensing dimming lamp automatically adjusts a light emission status of LED light sources according to the ambient light by a processor installed at the base. The processor includes a pass filter unit and a modulation unit, and the pass filter unit receives a detected signal waveform of the sensor and a driving voltage waveform of the LED light sources.

Abstract: In various embodiments, a lamp arrangement with a lamp including a base which is able to be inserted into a socket for establishing contact with the lamp, wherein the lamp arrangement has at least one operating element for setting a property of the lamp, wherein the at least one operating element is not accessible when the lamp is being used in the intended manner.

Abstract: A light emitting diode (LED) lamp circuit is adapted to replace a fluorescent lamp in a fluorescent light fixture without having to modify the fluorescent light fixture in any way. The LED light string and its associated drive circuitry may be divided into two symmetric light strings. Furthermore, the two strings (power rails more precisely) may be tied together with a diode voltage/current steering system. The fluorescent replacement LED lamp design ‘spoofs’ all fluorescent lamp drive modes that a ballast could be configured for.

Abstract: The current invention relates to a LED lamp (10) comprising at least one LED light source (103), at least one driver (101) for powering the LED light source (103), at least one input rectifier with a plurality of diodes for converting an AC current from mains into a DC current, providing electrical power to the driver (101), the LED lamp (10) further comprising a safety module comprising one first and one second modules (F1, F2) for protection against overcurrent and overheating of the EM ballast, the first module (F1) being put in series with the driver (101) and designed to interrupt current in case the driver fails when the LED lamp (10) is directly connected to the mains, and the second module (F2) being designed to interrupt current when at least one of the diodes of the input rectifier fails when the lamp is connected to the mains via an EM ballast.

Abstract: A photo sensor-integrated tubular light emitting apparatus includes a cylindrical cover unit, a light-emitting module and a pair of sockets. The cylindrical cover unit includes a heat dissipation member and a cover. The cover has light-transmittance and is combined with the heat dissipation member. The light-emitting module is disposed in the cylindrical cover unit and has a plurality of arrayed light-emitting devices therein. The pair of sockets is combined with ends of the cylindrical cover unit. A photo sensor module is disposed in one of the pair of sockets. A driving voltage applied to the light-emitting module is adjusted based on an amount of light sensed by the photo sensor module.

Abstract: A monitoring system and method can determine whether an ambient intensity surrounding a computer is suitable for a user when the user is working with the computer. The system and method can adjust the intensity of a light source in responds to the ambient intensity being unsuitable for the user.

Abstract: A liquid crystal monitor includes a first voltage conversion circuit (e.g. a DC/DC converter), which converts an external DC voltage into a first internal DC voltage supplied to CPU circuitry, and a second voltage conversion circuit, which converts the external DC voltage into a second internal DC voltage for driving a backlight of a liquid crystal panel. The external DC voltage is set proximate to a center value between the first internal DC voltage and the second internal DC voltage. This allows the liquid crystal monitor to be equipped with a battery unit producing a single external DC voltage, thus reducing weight compared to a conventional liquid crystal monitor.

Abstract: A power supply device according to one embodiment is configured to control a lighting of semiconductor light-emitting elements, wherein a dimming signal is canceled during a predetermined time period (T) from a timing immediately after power-ON, so as to light on light-emitting diodes to have a predetermined light amount, for example, a minimum light amount. After an elapse of the predetermined time period (T), cancellation of the dimming signal is released to light on the light-emitting diodes to have a light amount instructed by the dimming signal.

Abstract: An LED lighting device includes: a resistor R1 configured to output a detection value of an inductor current I1 flowing through an inductor L1 during an ON period of a switching element Q1; a threshold generation section 42 configured to generate a threshold value Vs of the inductor current I1 corresponding to a dimming level; and a switching control section 44 configured to control the switching element Q1 to turn on and off. The switching control section 44 is configured to determine an OFF timing of the switching element Q1 based on comparison between the detection value and the threshold value Vs of the inductor current I1. The LED lighting device increases a period of a switching cycle of the switching element Q1 with decrease of the dimming level.

Abstract: An organic light-emitting display apparatus includes a thin film transistor including an active layer, a gate electrode, a source electrode, and a drain electrode, an organic light-emitting device including a pixel electrode connected to the thin film transistor, an intermediate layer including a light-emitting layer, and an opposed electrode, and a first wiring and a second wiring arranged in different layers on a substrate.

Abstract: A control device adapted to control a first light-emitting diode and a second light-emitting diode, includes a first logic operation unit receiving a first enable signal and a second enable signal to generate a first logic signal, a second logic operation unit receiving the first and second enable signals to generate a second logic signal, a first adjustment unit generating a first adjustment signal according to the first logic signal, a second adjustment unit generating a second adjustment signal according to the second logic signal, a first control unit outputting a first control signal to the first light-emitting diode according to the first enable signal and the first adjustment signal, and a second control unit outputting a second control signal to the second light-emitting diode according to the second enable signal and the second adjustment signal. The first logic signal and the second logic signal are complementary.

Abstract: A converting controller comprises a power pin, a ground pin, at least one input pin, at least one output pin, at least one set pin and a failure generating circuit. The power pin is adapted to be coupled with a power source to receive electric power for operation, and the ground pin is adapted to be grounded. The input pin is adapted to receive a corresponding input signal and the output pin is used to output a corresponding output signal. The set pin is adapted to set a corresponding operating parameter of the converting controller. The failure generating circuit is coupled with and uses one of the input pin and the set pin as a protection output pin. The failure generating circuit modulates the level of the protection output pin to be a protection logic level when the converting controller is under a protection state.

Abstract: A light emitting device includes: a substrate having opposed first and second main faces; a light emitting element mounted on the first main face of the substrate; and a driver integrated circuit (IC) formed in an area corresponding to a lower side of the light emitting element within the substrate, and adjusting the amount of current applied to the light emitting element. Since the circuit provided to drive a light emitting diode (LED) is integrated within the substrate, a compact light emitting device having an integrated structure can be obtained.

Abstract: A switching power supply apparatus according to an embodiment includes a switching element, an inductor, a drive circuit, a mounting substrate, and an insulating substrate. The switching element is connected between a power supply and a lighting load. The inductor is connected in series to the switching element. The drive circuit controls the switching element, converts a voltage supplied from the power supply, and is mounted on the mounting substrate. The insulating substrate is thermally connected to the switching element, and has thermal conductivity higher than the mounting substrate.

Abstract: A lamp includes a single string of light emitting diodes (LEDs), driven in common, configured to cause the lamp to emit a visible light output via a bulb. The lamp also includes a lighting industry standard lamp base, which has connectors arranged in a standard three-way lamp configuration, for providing electricity from a three-way lamp socket. Circuitry connected to receive electricity from the connectors of the lamp base as standard three-way control setting inputs drives the string of LEDs. The circuitry is configured to detect the standard three-way control setting inputs and to adjust the common drive to the string of LEDs to selectively produce a different visible light outputs of the lamp via the bulb responsive to the three-way control setting inputs. The lamp may also include nanophosphors pumped by emissions of the LEDs, so that the lamp produces a white light output of particularly desirable characteristics.

Abstract: Embodiments of a plug-and-play control module for a LED lighting device are described. In one aspect, a plug-and-play control module for a LED lighting device includes a main body and a control module socket. The control module socket includes an AC socket and a DC socket. The main body includes a housing, a control unit, an input port and an output port. The control unit resides inside the housing. A portion of the input port and a portion of the output port protrude outside the housing and connect to the control module socket. The control unit controls an output current flowing through the output socket and thus the on/off of the LED lighting device.

Abstract: A lighting device may be provided that includes: a heat sink which includes a top surface and a member which has a side and is disposed on the top surface; a light source which includes a substrate disposed on the side of the member and light emitting devices disposed on the substrate, and has a reference point; and a cover which is coupled to the heat sink and includes an upper portion and a lower portion, which are divided by an imaginary plane passing through the reference point and being parallel with the top surface of the heat sink, wherein a distance from the reference point of the light source to the upper portion of the cover is larger than a distance from the reference point of the light source to the lower portion of the cover.

Abstract: A LED based lighting apparatus is disclosed. The light engine used in the lighting apparatus may use a multi-layer metal core printed circuit board and have a plurality of LED groups that are independently controllable by a control unit. The power supply input and return paths connected to each LED group may be implemented on different layers to allow a compact footprint that may be used with traditional fluorescent encasements with relatively little modification.

Abstract: An LED light bulb has a lamp base for a lamp socket, a heat sink, and a globe. Within the globe on the heat sink is a printed circuit board having tabs or legs projecting from the circuit board. The tabs or legs have one or more LEDs mounted thereon and are angled relative to the circuit board so as to be directed away from the axis of the light bulb. the circuit board may either be ring-shaped with inwardly extending tabs, or may have outwardly extending tabs. Methods of making such LED light bulb and methods of distributing light from the LED light bulb, which involves directing light output by a plurality of LEDs in a plurality of radially outward directions relative to an axis of the light bulb, are also disclosed herein.

Abstract: System, methods, and apparatus, including devices and software, for providing self-adjusting light sources. In one aspect, a lighting unit includes one or more LEDs and an ambient light sensor. The light sensor measures ambient light in synchronization with intermittent off periods of light generated by the LEDs. For example, the LEDs in the lighting unit can be driven by a pulse width modulated signal that turns on and off the LEDs in an alternating manner, and the ambient light can be measured when the LEDs are turned off. In some implementations, a compact lighting unit, such as a light bulb, is provided that can be easily attached to standard light fixtures and can efficiently control its own brightness based on ambient light conditions.

Abstract: The present application discloses a light emitting diode lighting device and a light emitting diode lamp, the light emitting diode lighting device includes: a fluorescent lamp ballast outputting an alternating current; and at least one first light emitting diode lamp coupled with the fluorescent lamp ballast, and comprising a rectifying and filtering circuit and at least one light emitting diode string coupled with the rectifying and filtering circuit. The present application directly replaces a conventional fluorescent lamp tube with a properly designed LED lamp without any other modifications when reinstallation a conventional fluorescent lamp lighting device into a light emitting diode lighting device, which may reduce the cost of reinstallation, and greatly facilitate the user.

Abstract: An AC/DC power converter is coupled between a fluorescent ballast circuit and a set of light emitting diodes (LEDs) forming an LED lamp. The power converter converts an AC output from the ballast circuit to a DC current applied to drive operation of the LEDs. The power converter transforms and rectifies the AC output from the ballast circuit to generate a DC output current. An open load protection circuit is coupled to protect the ballast circuit when the LED lamp is not connected. Current control is provided by a transistor having a source/drain conduction path coupled to shunt the DC output current in response to a control signal having a duty cycle generated as a function of a zero-crossing of the AC output and a sensed value of the DC output current applied to the LED lamp.

Abstract: A processor controlled induction RF fluorescent lamp, where the processor controls a rapid startup function, the lamp comprising a lamp envelope filled with a gas mixture at less than typical atmospheric pressure, wherein the lamp envelope comprises at least one metallic structure for collecting mercury; a power coupler comprising at least one winding of an electrical conductor; an electronic ballast, wherein the electronic ballast provides appropriate voltage and current to the power coupler; and where the processor controls the rapid startup function to increase power at lamp startup to rapidly heat and vaporize the mercury collected on the at least one metallic structure to promote rapid luminous development during the turn-on phase of the induction RF fluorescent lamp.

Abstract: A processor controlled induction RF fluorescent lamp, where the processor controls a dimming function, the lamp comprising a bulbous vitreous portion of the induction RF fluorescent lamp comprising a vitreous envelope filled with a working gas mixture; a power coupler comprising at least one winding of an electrical conductor; and an electronic ballast, wherein the electronic ballast provides appropriate voltage and current to the power coupler.

Abstract: A self-ballasted lamp includes a base body, a light source unit attached to one side of the base body, a lens attached to the light source unit, a cap provided on the other side of the base body and a lighting circuit arranged in the space provided by the base body and the cap. The light source unit includes a light source constituted by semiconductor light emitting elements. The lens has a lens body facing the light source and an attachment leg for attaching the lens body to the light source unit. A claw portion to be secured to the light source unit can be provided on the attachment leg.

Abstract: The invention relates to an LED lamp (1, 1?, 1?, 1??, 1??) comprising at least one light emitting diode (LED, 2) arranged in a housing (3), and an isolation monitoring device (4) configured to determine a defect of the housing (3) and disconnect said at least one LED (2) from power in case said defect is detected, to enhance the safety of the LED lamp (1, 1?, 1?, 1??, 1??) and reduce the risk of electric shock for a user.

Abstract: An organic EL device including an organic EL portion, wiring, and an externally-connecting terminal, which are disposed above a substrate having flexibility. The substrate has a first region above which the organic EL portion is disposed, a second region above which the terminal is disposed, and a bend portion between the first and second regions. The bend portion corresponds to a predetermined portion of the organic EL device at which the organic EL device is to be bent. The organic EL portion is covered by an inorganic sealing film, and the inorganic sealing film is covered by a resin sealing film. An end of the inorganic sealing film in a direction of the terminal does not extend over the bend portion towards the terminal, and an end of the resin sealing film in the direction of the terminal extends over the bend portion towards the terminal.

Abstract: A lamp includes a single string of light emitting diodes (LEDs), driven in common, configured to cause the lamp to emit a visible light output via a bulb. The lamp also includes a lighting industry standard lamp base, which has connectors arranged in a standard three-way lamp configuration, for providing electricity from a three-way lamp socket. Circuitry connected to receive electricity from the connectors of the lamp base as standard three-way control setting inputs drives the string of LEDs. The circuitry is configured to detect the standard three-way control setting inputs and to adjust the common drive to the string of LEDs to selectively produce a different visible light outputs of the lamp via the bulb responsive to the three-way control setting inputs. The lamp may also include nanophosphors pumped by emissions of the LEDs, so that the lamp produces a white light output of particularly desirable characteristics.

Abstract: A thin profile electronic ballast for a lighting device includes a metal casing, a circuit board, and a metal cover. The metal casing includes an entrance and a receptacle. The circuit board includes a plurality of electronic components. The circuit board is accommodated within the receptacle of the metal casing. The entrance of the metal casing is covered by the metal cover. The circuit board is disposed in a direction vertical to the metal cover.

Abstract: An LED bulb is described. The LED bulb comprises a shell, a plurality of LEDs within the shell, a driver circuit connected to the plurality of LEDs, and a base connected to the shell. The driver circuit comprises a first input to receive AC voltage, a second input to receive AC voltage, a neutral input, a power supply circuit connected to the plurality of LEDs, and a brightness control circuit. The brightness control circuit is connected to the first input, the second input, and the power supply circuit. The brightness control circuit is configured to output a modified AC voltage to the power supply circuit. The modified AC voltage is created by blocking a portion of a cycle of AC received by the first or second input. The blocked portion is based on whether the first input, the second input, or the first and second inputs are both hot.

Abstract: An electrical discharge lighting apparatus includes: a bulb including a chamber section comprising transparent material and containing a gas that is responsive to electric current to emit light; an ionizing conductor configured and disposed to provide a voltage across the gas to ionize and break down the gas; and an electrode physically separate from the ionizing conductor and configured and disposed to induce a current through the gas.

Abstract: A light bulb-shaped lamp according to the present invention includes: a board on which an LED is mounted; a circuit board on which a drive circuit that turns on the LED is mounted; output wires for supplying power for turning on the LED from the drive circuit to the LED; a pedestal; and a potential-stabilizing wire electrically connecting the pedestal to a circuit ground of the drive circuit.

Abstract: A system and device for an adaptable, energy-efficient light unit is herein provided, wherein the system and device allows for a longer life span of the light emitting device within the light unit, and for replacing a light emitting device within a light unit that does not require any tool or complex process. The system includes at least one light emitting unit, a light panel system frame, wherein the frame includes a power track, fixtures, and conductors, a lens, and may include a hanger. The device is a light emitting unit that includes at least a circuit board, wherein the circuit board may include ventilation holes and is made of heat conductive materials, at least one light emitting source, a voltage converter, power fixtures, wherein the power fixtures are configured to retrofit conventional light fixtures. The circuit board is configured to provide consistent voltage to the light emitting device.

Abstract: A dimming LED lamp having an LED light, an EMI circuit, a power-factor correction circuit, a digital switching power supply circuit, a dimming control circuit, a power supply circuit, a signal acquisition circuit, an MCU microcontroller, a RF wireless transmitter, a RF receiver circuit, an EEPROM memorizer, and a fan circuit. The brightness of the dimmable LED lamp can be dimmed through any conventional incandescent dimmers, or through any ordinary key switch, or through a wireless transmitter. The wireless transmitter can also remotely turn on the lamps or turn off the lamps, at the same time the LED lamp also has the function of brightness saving. The fan circuit uses air convection to cool the LED which has the advantages of aesthetically pleasing appearance, small size, light weight, low cost, long life, and good cooling effect.

Abstract: In embodiments of the present invention, a method and system is provided for designing improved intelligent, LED-based lighting systems. The LED based lighting systems may include fixtures with one or more of rotatable LED light bars, integrated sensors, onboard intelligence to receive signals from the LED light bars and control the LED light bars, and a mesh network connectivity to other fixtures.

Abstract: Controllers for driver circuits of solid state light bulb assemblies including light emitting diodes comprise a power converter, a data storage unit operable to store data items relating to an operating behavior of the light bulb assembly, a temperature sensor operable to determine a chip temperature of the controller, and a data processing unit operable to receive the chip temperature, to retrieve the stored data items from the data storage unit, to generate a control signal in dependence upon the chip temperature and the retrieved data items, and to output the control signal to the power converter for operation of the light source.

Abstract: A driver circuit for programmable solid state light bulb assemblies including light emitting diodes is operable to provide a drive current to a light source of the light bulb assembly. The controller comprises a data storage unit storing a test scenario for calibration of the light bulb assembly; wherein the test scenario indicates a sequence of states of the light source; wherein a state of the light source is associated with settings of the driver circuit; a data input unit receiving a command signal via a modulated electricity supply signal; and a data processing unit retrieving the test scenario from the data storage unit; in dependence of the received command signal, generating a control signal for operating the light source in at least one state of the sequence of states of the test scenario; and to output the control signal.

Abstract: A display device according to an embodiment includes a display panel including a display area having pixel areas, and a non-display area surrounding the display area. The display area includes first power lines for providing a first power to the pixel areas. The display device further includes a driver electrically connected to the first power lines of the display panel. The driver includes a driving integrated circuit, signal output pads connected to the driving integrated circuit and configured to output signals, a power supply line disposed outside the signal output pads and configured to supply the first power, and power output pads connected to the power supply line and configured to output the first power from the power supply line to the first power lines, wherein the power output pads are alternatingly disposed with the signal output pads.

Abstract: A lamp includes a single string of light emitting diodes (LEDs), driven in common, configured to cause the lamp to emit a visible light output via a bulb. The lamp also includes a lighting industry standard lamp base, which has connectors arranged in a standard three-way lamp configuration, for providing electricity from a three-way lamp socket. Circuitry connected to receive electricity from the connectors of the lamp base as standard three-way control setting inputs drives the string of LEDs. The circuitry is configured to detect the standard three-way control setting inputs and to adjust the common drive to the string of LEDs to selectively produce a different visible light outputs of the lamp via the bulb responsive to the three-way control setting inputs. The lamp may also include nanophosphors pumped by emissions of the LEDs, so that the lamp produces a white light output of particularly desirable characteristics.

Abstract: Methods for manufacturing a light source circuit board having one or more light emitting components that include providing at least one circuit component on a light source circuit board, wherein the at least one circuit component has an electrical circuit constant that specifies one or more performance parameters for the light source. The methods also include measuring the electrical circuit constant of the at least one circuit component. The methods also include identifying one or more performance parameters for the light source based on the measured electrical constant.

Abstract: A dimmable induction RF fluorescent lamp that is able to replace an ordinary reflector-type incandescent lamp, both in its ability to screw into a standard incandescent lamp socket and to have the general look of the ordinary reflector incandescent lamp, but with all of the advantages of an induction lamp, as described herein.

Abstract: A high frequency induction RF fluorescent lamp that is able to replace an ordinary incandescent lamp, both in its ability to screw into a standard incandescent light bulb socket and to have the general look of the ordinary incandescent lamp, but with all of the advantages of an induction lamp, as described herein. The present disclosure describes a high frequency electronic ballast, as well as structures for an induction RF fluorescent lamp that includes a bulbous portion, a tapered portion, an electronics portion, and a screw base, creating an external look for the high frequency induction RF fluorescent lamp that is similar to the profile of an ordinary incandescent lamp.

Abstract: A high frequency induction RF fluorescent lamp comprising an electronic ballast operating at greater than 5 MHz and a power coupler with conductive material in contact with the power coupler to reduce extraneous electromagnetic radiation emanating from the power coupler.

Abstract: A burst-mode dimmable induction RF fluorescent lamp that is able to replace an ordinary reflector-type incandescent lamp, both in its ability to screw into a standard incandescent lamp socket and to have the general look of the ordinary reflector incandescent lamp, but with all of the advantages of an induction lamp, as described herein.

Abstract: An induction RF fluorescent lamp that is able to replace an ordinary reflector-type incandescent lamp, both in its ability to screw into a standard incandescent lamp socket and to have the general look of the ordinary reflector incandescent lamp, but with all of the advantages of an induction lamp, and comprising a power coupler with conductive material in contact with the power coupler to reduce extraneous electromagnetic radiation emanating from the power coupler.

Abstract: A control device adapted to control a first light-emitting diode and a second light-emitting diode, includes a first logic operation unit receiving a first enable signal and a second enable signal to generate a first logic signal, a second logic operation unit receiving the first and second enable signals to generate a second logic signal, a first adjustment unit generating a first adjustment signal according to the first logic signal, a second adjustment unit generating a second adjustment signal according to the second logic signal, a first control unit outputting a first control signal to the first light-emitting diode according to the first enable signal and the first adjustment signal, and a second control unit outputting a second control signal to the second light-emitting diode according to the second enable signal and the second adjustment signal. The first logic signal and the second logic signal are complementary.

Abstract: Embodiments provide a light emitting module including a body, a plurality of light emitting devices disposed on the body, and a turn-on controller configured to control turn-on of the plurality of light emitting devices. At least some neighboring light emitting devices among the plurality of light emitting devices are spaced apart from one another by different distances.

Abstract: The type of an LED power driver (i.e., a magnetic transformer or an electronic transformer) is determined by manipulating the AC voltage produced by the power driver so that it may be analyzed and the type of power driver reliably determined. In various embodiments, a system for detecting an AC power supply type includes a circuit for monitoring a negative half or a positive half of an output voltage of the AC power supply and an analyzer for determining the AC power supply type based at least in part on a presence or absence of an envelope in the monitored output voltage.

Abstract: An organic light-emitting diode (35) is described, which comprises a light-emitting structure designed to emit light when it is powered, and a delay structure designed to delay a propagation of at least two power signal pulses (4a_left, 4b_right, 4a_top, 4b_bottom) having a temporal relationship with one another and such a signal strength that a part of the light-emitting structure is driven in dependence on coincidence of the power signal pulses at said part of the light-emitting structure, and a terminal structure designed to receive the at least two power signal pulses (4a_left, 4b_right, 4a_top, 4b_bottom) and to feed the delay structure at its different positions with the at least two power signal pulses (4a_left, 4b_right, 4a_top, 4b_bottom). A circuit for powering said light-emitting structure, as well as a method of operating said organic light-emitting diode (35) is also described.