Abstract: A plasma lamp includes plates that are approximately parallel, with at least one array of microcavities formed in a surface of at least one plate. When desirable, the plates are separated a fixed distance by spacers with at least one spacer being placed near the plate's edge to form a hermetic seal therewith. A gas makes contact with the microcavity array. Electrodes capable of delivering a time-varying voltage are located on the surface of each plate. At least one electrode is located on an exterior surface of at least one interior plate. Optionally, protective windows may be placed over the electrodes. The application of the time-varying voltage interacts with the gas to form a glow discharge plasma in the microcavities and the fixed volume between the plates (when present). The glow discharge plasma efficiently and uniformly emits UV/VUV radiation over the entire surface of the lamp.

Abstract: Disclosed is a dynamic lighting method, which includes a power supply output module of a dynamic lighting device outputs a first power supply signal according to a lighting control signal, electric parameters of the first power supply signal include one or more groups of dynamically changed electrical parameters, one or multiple lighting parts of the dynamic lighting device generate a dynamically changed light signal under driving of the first power supply signal, so that the dynamic lighting device outputs a light of dynamic illumination, a change rate of illumination of the light is not more than 0.02 during any time period of 0.1 second, and a ratio of the minimum and maximum values of the illumination of the light outputted by the dynamic lighting device is not more than 50%. The lighting method will result that the physiological structures of the eyes change with change of the light accordingly to overcome the defect that the user easily feels visual fatigue.

Abstract: Provided are an open-mode protection device and an electronic device having the same. An open-mode protection device according to an embodiment of the present invention is connected in parallel to each of a constant current source and a load configured with a light emitting diode (LED). The open-mode protection device comprises a first external electrode connected to one sides of the constant current source and the load; a second external electrode connected to the other sides of the constant current source and the load, and a ground; a protection unit configured to bypass, to the ground through the second external electrode, an overvoltage or an overcurrent flowing into the first external electrode; and a current suppressing unit connected in series to the protection unit and configured to sense a temperature or current of the protection unit and reduce the current of the protection unit as the temperature or current increases.

Abstract: There are provided a circuit device for emitting heat to the outside and a backlight unit including the same. The present invention relates to a display device, a backlight unit connected to a display panel, or a constituent element thereof. The circuit device generates heat, and one or more heat emitting units for emitting heat generated from the light source of the backlight unit to the outside are added to the circuit device, and the backlight unit controlled by the aforementioned circuit device is provided. Each of the heat emitting units according to one embodiment of the present invention includes two or more different material layers to fix the circuit device and provide a heat emitting/directing function.

Abstract: A random lighting device is disclosed. The random lighting device includes: a plurality of light-emitting units, each including a light emitting diode and a light-emitting control unit for randomly determining a flickering cycle and brightness of the light emitting diode to control the light emission of the light emitting diode; and a control unit for limiting a range of the flickering cycle and brightness of the light-emitting units.

Abstract: An impedance matching method and device for a pulsed RF power supply are provided. The impedance matching method includes: a coarse adjustment step: performing adjustment based on a current load impedance to make a current reflection coefficient |?| no greater than an ignition reflection coefficient |?t|, and setting a current position as an ignition position; a fine adjusting step: keeping the ignition position unchanged, performing real-time adjustment based on the current load impedance to realize impedance matching, and setting a current position as a matching position; and a switching step: after impedance matching is realized for the first time, switching between the ignition position and the matching position in different pulse time durations of each subsequent pulse period to realize impedance matching in different pulse periods. The impedance matching method and device may improve matching efficiency, process stability and utilization of the pulsed RF power supply.

Abstract: The present invention relates to a vehicle lamp, specifically, a vehicle lamp using a semiconductor light emitting device. A vehicle lamp according to the present invention includes a light source unit to emit light, and the light source unit includes a wiring board, a plurality of semiconductor light emitting devices arranged on one surface of the wiring board, a first wiring electrically connected to a first group including a part of the semiconductor light emitting devices and disposed on the one surface of the wiring board, a second wiring electrically connected to a second group including another part of the semiconductor light emitting devices and extending to another surface of the wiring board through via holes formed through the wiring board, and a third wiring electrically connected to the semiconductor light emitting devices included in the first and second groups and forming a common electrode.

Abstract: An electronic arrangement includes a radiation source. A controlled voltage converter is configured to provide a lamp voltage for the radiation source for operating the radiation source in an ON state for a pulse duration, and to regulate the lamp voltage such that a reference voltage at a feedback terminal of the voltage converter is maintained substantially constant. A voltage source is connected to the feedback terminal and configured to provide, via the feedback terminal for acting on the regulation of the voltage converter, a time-dependent control voltage having a predefined time profile. The voltage converter is configured to select a time profile for the lamp voltage as a function of the predefined time profile of the time-dependent control voltage such that a power of the radiation source deviates from a constant power value by no more than 25% during at least 90% of the pulse duration.

Abstract: An airfield runway lamp controller is described herein. One airfield runway lamp controller includes a current sense transformer configured to detect a failure of a light source of an airfield runway lamp, and an alternating current (AC) switch configured to shunt the light source of the airfield runway lamp upon the current sense transformer detecting a failure of the light source.

Abstract: The present disclosure provides a low plasma generation system. In one implementation, the system includes a plurality of electrodes with a grounded electrode and at least one high-voltage electrode. The grounded and the high-voltage electrodes are arranged such that a tip of the grounded electrode and a tip of the at least one high-voltage electrode have a vertical-level difference.

Abstract: Embodiments of the disclosure provide a plasma source assembly and process chamber design that can be used for any number of substrate processing techniques. The plasma source may include a plurality of discrete electrodes that are integrated with a reference electrode and a gas feed structure to generate a uniform, stable and repeatable plasma during processing. The plurality of discrete electrodes include an array of electrodes that can be biased separately, in groups or all in unison, relative to a reference electrode. The plurality of discrete electrodes may include a plurality of conductive rods that are positioned to generate a plasma within a processing region of a process chamber. The plurality of discrete electrodes is provided RF power from standing or traveling waves imposed on a power distribution element to which the electrodes are connected.

Abstract: An apparatus and method for retrofitting a wired luminaire to wireless control. The method includes coupling a sensor and the luminaire to the controller by wire and further includes controlling a separate memory device, a radio, a relay for switching power to a luminaire, a zero to ten-volt luminaire control output, and a hardware switch with a single microcontroller.

Abstract: A circadian lighting apparatus includes a housing, two light sources, and a control logic. The first light source is a blue-enriched light source for stimulating human to a high circadian mode. The second light source is a blue-depleted light source for calming down human to a low circadian mode. The criteria of a good circadian lighting apparatus are identified. When coated with an anti-bacterial photocatalytic coating on the exterior, the circadian lighting apparatus becomes a disinfecting equipment that can kill the airborne bacteria and viruses that make contact to its anti-bacterial photocatalytic coated surface.

Abstract: A light emitting diode (LED) fixture is provided. The fixture includes a housing that supports an LED array. A power supply can be coupled to the housing via a connector. A controller with a constant current driver can be configured to actuate the LED array. In an embodiment the controller can be configured to control operation of the LED array based on a sensed signal.

Abstract: A fault detection system (100) for detecting faulty devices among a first plurality of serviceable devices (200) is provided. The serviceable devices have a wireless transmitter (210) arranged to periodically transmit a wireless signal (230) that encodes a device identifier. Mobile devices have a receiver (310) arranged to receive the wireless signal of a serviceable device within the transmission range, and to obtain the device identifier from the wireless signal. A fault detector (400) is arranged to detect faulty devices by selecting device identifiers in the plurality of device identifiers for which no device identifier was received in a time period.

Abstract: A method of setting luminance levels of a solid-state light sources of a luminaire with programmable light distribution is provided. The method includes obtaining a file describing a desired light beam distribution, converting the desired light beam distribution into luminance levels for the solid-state light sources, and applying the luminance levels to the solid-state light sources to cause the luminaire to output the desired light beam distribution.

Abstract: The various implementations described herein include methods, devices, and systems for calibrating LED(s). In one aspect, an electronic device includes: a plurality of light emitting diodes (LEDs); one or more processors; and memory storing a plurality of color correction matrices, each color correction matrix of the plurality of color correction matrices corresponding to an LED of the plurality of LEDs and generated based on a desired color value for the corresponding LED, wherein the electronic device is configured to relay status of the electronic device via the plurality of LEDs operating in conjunction with the plurality of color correction matrices.

Abstract: High voltage high power pulsed power switches relating to a laser triggered multi-stage vacuum switch. The laser triggered multi-stage vacuum switch has laser triggered vacuum gap, multi-stage self-breakdown vacuum gaps and trigger system. Multi-stage self-breakdown vacuum gaps are fixed on the top of laser triggered vacuum gap by connector. The grading ring is sheathed outside of upper insulation shell. By adopting the series connected laser triggered vacuum gap and multi-stage self-breakdown vacuum gaps, with the synergy of two type vacuum gaps, application of laser triggered multi-stage vacuum switch in the high voltage, high power, high repetitive frequency pulsed power system can be realized. With multiple laser beams shot onto multiple targets, more initial plasma can be generated as the irradiation area of laser on target surfaces is enlarged, and the trigger performances of laser triggered multi-stage vacuum switch can be enhanced.

Abstract: An alternating-current LED drive circuit, comprising a plurality of LED strings connected between an alternating-current voltage source and a ground, any one of the LED strings being correspondingly provided with a conversion switch and one or more LED light sources being connected in series in any one of the LED strings; a voltage detection unit used for detecting a voltage root mean square value of an alternating-current power supply signal in the connected alternating-current voltage source; and a switching logic control unit used for outputting, according to a voltage interval into which the voltage root mean square value detected by the voltage detection unit falls, a conversion control signal corresponding to the voltage interval to each conversion switch to corresponding to each LED string respectively control each conversion switch to perform a corresponding conversion action, the conversion action of each conversion switch enabling all LED strings to be connected in series or in parallel to adapt to

Abstract: The present invention relates to a Digital Addressable Lighting Interface (DALI) interface and a power device comprising the same. The present invention can provide a DALI interface comprising: a first limiting circuit unit for outputting a limited current based on a DALI transmission signal and a DALI reception signal; and a gate drive circuit unit for generating, based on the limited current, a drain-source voltage that is used for generating a DALI signal in accordance with the DALI standard. As a result, the present invention can generate a signal complying with the DALI standard even under various voltage and current conditions of a DALI master.