Abstract: A lighting fixture includes a light source that emits an illumination light and a receiver configured to receive a lighting control message from a photo sensor device. The lighting fixture further includes a lighting controller configured to adjust the illumination light based on the lighting control message. Adjusting the illumination light by the lighting controller includes changing a Correlated Color Temperature (CCT) of the illumination light.

Abstract: A method and apparatus for use as a compact medical ion accelerator includes a charged particle linear accelerator module and a pair of fixed field magnet assemblies. The linear accelerator module accelerates a pulse of charged particles as a beam aligned along a first ray. The pair of assemblies controls the orbits of the pulse by turning the pulse 360 degrees within a first plane. The magnet assemblies are disposed on opposite sides of the linear accelerator with mirrored symmetry relative to a line that is perpendicular to the first ray and passes through a reference point in the first plane. Each assembly includes a pair of magnets for which a strength of a magnetic field varies non-linearly along a radial direction; and a superconducting magnet for which a strength of a magnetic field varies along a radial direction. The superconducting magnet is disposed between the pair of magnets.

Abstract: An antenna structure includes a housing, a feeding portion, and a connecting portion. The housing defines a gap and a groove. The housing forms a radiating portion and a coupling portion through the gap and the groove. A portion of the housing between the feeding portion and the gap forms a first radiating section. The connecting portion is electrically connected to one end of the coupling portion adjacent to the gap. When the feeding portion supplies current, the current flows through the feeding portion and the first radiating section, and is coupled to the connecting portion through the gap to activate a first operating mode. When the feeding portion supplies current, the current flows through the feeding portion and the first radiating section, and is coupled to the coupling portion through the gap to activate a second operating mode.

Abstract: An antenna array comprising at least two sets of antenna unit elements is disclosed. Each set of antenna unit elements supports a respective frequency band, wherein a vertical center-to-center distance between the antenna unit elements of a lowest frequency among the respective frequency bands is more than twice the vertical extension, D, of convex hull containing one antenna unit element of the lowest frequency, and antenna unit elements of at least a second set are arranged interleaved with the antenna unit elements of the lowest frequency. An arrangement comprising the antenna array and a network node is also disclosed.

Abstract: Methods, devices, and systems are provided for controlling a smart device that may emit light of different colors. The method may include: determining first light color information of a first smart light when the first smart light is turned on; broadcasting a device open notification carrying the first light color information; receiving the device open notification broadcast by the first smart light, the device open notification carrying the first light color information of the first smart light; displaying a control option corresponding to the first smart light according to the first light color information; and when receiving an executing instruction of a target function triggered by the control option corresponding to the first smart light, sending a control request corresponding to the target function to the first smart light; receiving the control request corresponding to the target function sent by the control device and executing the target function.

Abstract: A LED controller for an LED pixel array includes a serial interface to an external data bus, along with an address generator connected to the serial interface and the LED pixel array. An image frame buffer is connected to the interface to receive image data and further connected to the address generator to receive an image frame buffer address. A command and control module is connected to the serial interface and configured to modify image frame buffer output signals. A calibration data storage module is connected to the command and control module to store calibration data related to pixel voltage response in the LED pixel array.

Abstract: An aircraft antenna assembly has a support element having a first and a second surface on opposite sides, an antenna element arranged on or in the support element, and a sealing device. The first surface and the sealing device are configured such that the antenna assembly is arranged on an outer skin section of an aircraft such that the first surface faces the outer skin section, the sealing device is situated between the support element and the outer skin section, and a cavity is defined by the sealing device, the outer skin section and the first surface. The support element or the sealing device y has a flow channel having a first and a second opening at opposite ends, the flow channel connecting the cavity and the environment and opening into the cavity at the first opening and opening into the environment at the second opening.

Abstract: A light emitting diode system allows for high current end user LED matrix applications while mitigating internal damage to control circuitry that may be caused by excess current flow. In one example, multiple switches operate in parallel across an LED. When an overvoltage condition is detected in a first switch, a logic circuit determines those switches programmed to operate in parallel and causes them to conduct current. This reduces the amount of current flowing through any one switch and mitigates harm to the device. The parallel configuration of switches may be driven by a single pulse width modulated current. This allows the drive current to be divided between parallel transistors, limiting the damaging effects that can be caused by high currents flowing through the transistors.

Abstract: A LED controller for an LED pixel array includes a serial interface to an external data bus, along with an address generator connected to the serial interface and the LED pixel array. An image frame buffer is connected to the interface to receive image data and further connected to the address generator to receive an image frame buffer address. A command and control module is connected to the serial interface and configured to modify image frame buffer output signals. A calibration data storage module is connected to the command and control module to store calibration data related to pixel voltage response in the LED pixel array.

Abstract: A bridge circuit (22) includes a first light-emitting element group (102, 110) and a second light-emitting element group (103, 120) connected in series; and a pair of comparison resistors (201, 202) connected in series and generating a voltage (Vref) equivalent to a voltage (VLED) at a connecting point between the first light-emitting element group (102, 110) and the second light-emitting element group (103, 120). A transistor (301, 302) is connected to a connecting point between the first light-emitting element group (102, 110) and the second light-emitting element group (103, 120) and a connecting point between the comparison resistors (201, 202), and operates when the first light-emitting element group (102, 110) or the second light-emitting element group (103, 120) is short-circuited.

Abstract: A light-emitting diode driving system for transmitting a signal based on a power line comprising a switch unit, a control unit, a main power supply, and a secondary power supply, wherein the switch unit comprises a main input end, a secondary input end, an output end, and a controlled end. When the control unit is in an operating state, the switch unit is turned on. When the control unit outputs a high level signal to control the switch unit to be turned on, the main power supply outputs a main direct current power source to the switch unit, and when the control unit outputs a low level signal to control the switch unit to be turned on, the secondary power supply outputs a secondary direct current power source to the switch unit. The system can make the light emission effect of the light string more stable.

Abstract: An EUV light generator including the following components: A. an electron storage ring including a first linear section and a second linear section; B. an electron supplier configured to supply the electron storage ring with an electron bunch; C. a high-frequency acceleration cavity disposed in the first linear section and configured to accelerate the electron bunch in such a way that a length Lez of the electron bunch satisfies “0.09 m?Lez?3 m;” and D. an undulator disposed in the second linear section and configured to output EUV light when the electron bunch enters the undulator.

Abstract: A machine learning model for classifying different lighting loads based on properties of electrical current through the loads is built. The model is applied to electrical data gathered based on powering a target lighting load in order to classify the load. Based on load classification, operating parameter(s) to control operation of a dimmer to control power to the load are selected and the dimmer is configured with the selected parameter(s) to achieve desired dimmer operation in dimming the load.

Abstract: A device for generating an atmospheric-pressure plasma is disclosed. In an embodiment the device includes a piezoelectric transformer comprising an input region and an output region, wherein the input region is designed to convert an applied alternating voltage into a mechanical oscillation, wherein the output region is designed to convert a mechanical oscillation into a voltage, and wherein the output region adjoins the input region in a longitudinal direction, a contact element fastened to the piezoelectric transformer, the contact element being designed to apply the alternating voltage to the input region and a holder, wherein the contact element is connected to the holder by a form-fit connection, in such a manner that a movement of the piezoelectric transformer in the longitudinal direction, relative to the holder, is prevented.

Abstract: A crowd entertainment system (100) is disclosed comprising a set of devices (110, 112) for generating an ambience observable from a crowd location (10), said ambience comprising at least one of a visual component and an audible component; and a controller (130) adapted to control said set of devices, the controller arranged to obtain data pertaining to a crowd behaviour parameter (131) indicative of the behaviour of a crowd in said crowd location from at least one crowd behaviour observation device and obtain the crowd behaviour parameter from said data; obtain a crowd composition parameter (133) indicative of a composition of said crowd from a crowd composition parameter source; select an ambience definition from a plurality of ambience definitions as a function of the obtained crowd behaviour parameter and crowd composition parameter, each of said ambience definitions being labelled with at least one particular crowd composition parameter; and control at least a subset of said set of devices in accordance w

Abstract: Systems and methods for operating light emitting diodes (LEDs) circuits are provided. Aspects include a power supply coupled to the first node, a set of light emitting diodes (LEDs) arranged in series between a second node and a third node, a boost converter coupled to the first node and the second node, a first control circuit configured to operate a first switching element to control operation of the boost convertor, wherein the boost convertor outputs a step-up voltage to drive the set of LEDs, and a second control circuit to operate the second switching element to control operation of the set of LEDs, the second switching element coupled to the third node, wherein the set of LEDs are ON responsive to the second switching element being in an ON state.

Abstract: An apparatus is provided for generating accelerated electrons, including a housing; an inlet for supplying a working gas; at least one first cathode; and at least one first anode, between which a corona discharge plasma can be generated. Ions from the corona discharge plasma can be accelerated onto the surface of a second cathode. Electrons emitted by the second cathode can be accelerated in the direction of the electron exit window by means of a second electric voltage applied between the second cathode and a second anode. The housing, the second cathode, and the electron exit window are ring-shaped. The ring-shaped space is divided into ring segments. Each ring segment has at least one wire-shaped electrode, which extends through the ring segment. At least one separate power supply device is associated with each ring segment, by means of which the strength of the electrical current is adjustable.

Abstract: An aircraft vertical stabilizer illumination light, the light includes a LED group, having a plurality of LEDs; an optical system, having at least one optical element, the optical system being associated with the LED group for shaping a light output from the light emitted by the LED group; an image generator, arranged within the aircraft vertical stabilizer illumination light for being oriented towards the vertical stabilizer, the image generator being configured to provide image data of the vertical stabilizer; and a controller, coupled to the image generator for receiving the image data; wherein the controller is configured to operate the aircraft vertical stabilizer illumination light in a plurality of operating modes.

Abstract: The present invention overcomes image defects such as the brightness inclination or smears by reducing the line resistance of a power source bus line which supplies electricity to organic EL elements. A plurality of pixels which are arranged in a matrix array is connected to power source lines, and the plurality of power source lines are connected to a power source bus line. Both ends of the power source bus line are connected to a power source part via a FPC. By supplying electricity to both ends of the power source bus line from the power source part, the line resistance of the power source bus line can be reduced.

Abstract: A control system for exhibition hall lighting circuit includes a first light intensity sensor, a second light intensity sensor, a data analysis module, a controller, a cabinet light control module, an exhibition hall light control module, a residual light control module, a display module, an alarm module, a power supply monitoring module, a UPS power supply, a power supply, a time synchronization module and an activity detection module. The first light intensity sensor and the second light intensity sensor enable the system to automatically turn on lights in an exhibition hall for lighting when the light intensity in the exhibition hall satisfies certain requirements. The activity detection module enables the system to turn on exhibition hall lights and cabinet lights in the exhibition hall when a light intensity difference is out of a certain range and there are activities of people in the exhibition hall.