Abstract: A display device include a first transparent layer, a second transparent layer and a spacer arranged between the first transparent layer and the second transparent layer to define a first region and a second region. A first plurality of electrodes are arranged on an inner surface of the first transparent layer in the first region. A plurality of light emitting diodes (LEDs) are connected to the first plurality of electrodes in the first region. A second plurality of electrodes are arranged on the inner surface of the first transparent layer in the second region. A third plurality of electrodes are arranged on the inner surface of the second transparent layer in the second region. Particles are arranged in the second region between the second plurality of electrodes and the third plurality of electrodes.

Abstract: The present invention concerns a device for pulsed electric discharge in a liquid comprising a control module configured to control a voltage generator such that the voltage generator applies a predetermined heating voltage setpoint between electrodes during a heating period until a pulsed electric discharge is obtained between the electrodes, in order to measure the breakdown voltage during the pulsed electric discharge, in order to estimate the quantity of energy supplied to the liquid during the heating period, referred to as the “quantity of heating energy”, from the predetermined heating voltage setpoint and the measured breakdown voltage, and in order to determine a new heating voltage setpoint to apply between the electrodes of the at least one pair of electrodes at the next pulsed electric discharge based on the estimated quantity of heating energy and a predefined breakdown voltage setpoint.

Abstract: In some examples, this disclosure describes a light-emitting diode (LED) driver circuit configured to: control a set of LED channels; receive, from each LED channel of the set of LED channels, channel status information that indicates whether the respective LED channel is activated or deactivated; and determine, based on the channel status information corresponding to each LED channel of the set of LED channels, a channel status of the respective LED channel. Additionally, the LED driver circuit is configured to output, to a master computing device, the channel status corresponding to each LED channel of the set of LED channels; and output, to the master computing device, channel mapping information, wherein the master computing device is configured to determine, based on the channel status information and the channel mapping information, whether one or more error conditions are present in the set of LED channels.

Abstract: A vegetable production method includes seeding, causing a cotyledon to sprout from a seed in a first period, growing a vegetable in a second period subsequent to the first period, further growing the vegetable in a third period subsequent to the second period, and harvesting the vegetable. The vegetable is grown with first light having a first maximum value of a light intensity in a wavelength range of 420 to 490 nm and including at least portion of light in a wavelength range of 500 to 600 nm in a later part of the second period, and is grown with second light having a second maximum value of a light intensity in a wavelength range of 590 to 650 nm, having a peak light intensity less than the second maximum value in a visible light wavelength range of less than or equal to 500 nm.

Abstract: For applications in the fields of organic electronics and photonics, disclosed are fluorescent charge-transfer compounds emitting in the visible spectral range from blue to red, including a triarylamine moiety, an electron-withdrawing group and at least two photopolymerizable groups. Also disclosed is a method for manufacturing a film-forming and photo-crosslinkable composition including at least one compound of the invention and its use as a precursor of a photocrosslinked emissive layer.

Abstract: Method of detecting a change in a lighting system comprising a plurality of devices each comprising a luminaire and/or a sensor, wherein each respective one of the devices has a respective location recorded in a commissioning database in association with data reported by the respective device; the method comprising: identifying a subset of said devices located within a predetermined spatial demarcation; automatically monitoring a respective value of a characteristic of each of the devices in said subset, thereby forming a data cluster comprising the values of said characteristic for the subset; automatically detecting that one of one of the devices in the subset has been moved by detecting a shift in one of the cluster values relative to the rest of the values in the data cluster; and in response to said detection, automatically outputting an indication that the commissioning database is likely to require updating to reflect said change.

Abstract: The disclosure develops a multi-scale model that partitions the device into different spatial regions where the high carrier domains are treated as reservoirs in local equilibrium and serve as injectors and receptors of carriers into the neighboring reservoirs through tunneling and thermionic emission. The nonequilibrium Green's function (NEGF) formalism is used to compute the dynamics (states) and the kinetics (filling of states) in the entire extended complex device. The local density of states in the whole device is computed quantum mechanically within a multi-band tight binding Hamiltonian. The model results agree with experimental I-V curves quantitatively.

Abstract: The present application discloses a lamp, which comprises a housing, a radiator being provided with an accommodating space for accommodating a light source and a Printed Circuit Board (PCB) board, an optical device having a bottom surface facing towards the radiator and a top surface facing towards external space, and a switch being connected to the PCB board, wherein the optical device comprises an actuator which is cooperated with the switch, wherein the optical device is rotatably arranged relative to the radiator so that the switch is switched by the actuator. By means of such an arrangement, a user may manually rotate the optical device of the lamp to drive the switch located inside the lamp to be switched, so that the lamp is conveniently switched between different color temperatures, for example between cold light and warm light.

Abstract: An electrical plug safety device is disclosed having a first planar section having a first pair of holes therethrough, a second planar section having a second pair of holes therethrough, and a pair of collapsible passages each having a first opening joined to one of the first pair of holes of the first planar section and each having a second opening joined to one of the second pair of holes of the second planar section. Each of the pair of collapsible passages comprises a single constriction between the first opening and the second opening. Prongs of an electrical plug inserted through the collapsible passages are shielded from contact as the plug is connected or disconnected from an outlet.

Abstract: Electronic and optoelectronic devices are provided that may include at least one inorganic surface covered at least partly by an organic layer. The organic layer may include a compound having at least one anchor group anchoring the compound to the inorganic surface, at least one functional moiety, and at least one methylidenyl group. Compounds and methods for manufacturing electronic and optoelectronic devices also are provided.

Abstract: A power handling system of a digitally addressable lighting interface (DALI) system controls switches connected with a bus of the DALI system that powers lower power light sources. A power supply circuit receives energy conducted on the bus to the lower power light sources and conducts at least part of the energy to a capacitor. Electric energy is stored in the capacitor until the capacitor stores at least a designated threshold of input voltage of a controller. The capacitor powers the controller to close one or more switches using at least some of the stored electric energy.

Abstract: A method of sterilizing containers, and in particular of plastics material containers is disclosed, wherein an inner wall of the containers is sterilized by being acted upon with charge carriers. A sterilization device which includes a charge generation device is introduced into the container (10 ) through an opening in the container and generates the charge carriers in the interior of the container.

Abstract: A light source can include an LED configured to emit light having a spectrum of first wavelengths when provided with electrical current, a pumped material configured to absorb at least some of the light emitted by the LED and to emit light having a spectrum of second wavelengths, a power supply configured to provide a series of electrical current pulses to the LED, and a current controller configured to control a time-averaged chromaticity coordinate of a combination of light emitted from the LED and the pumped material by controlling the series of current pulses provided to the LED.

Abstract: An electronic device whose housing can be electronically changed in look. The housing can have at least one curved surface, an electronic device, in the housing, the electronic device carrying out a function and displaying information. The housing has a controllable color portion on the outer surface. That color portion is controlled to display its color.

Abstract: Driver arrangements (1) comprise division circuits (100) with division inputs (101-102) for receiving input signals and division outputs (111-118) for supplying output signals to light sources (301-308). The division circuits (100) convert respective first and second input signals of a plurality of input signals into respective first and second parts of a further plurality of output signals. The driver arrangements (1) further comprise driver circuits (200) for driving the light sources (301-308) via the division circuits (100). The driver circuits (200) have driver outputs (201-202) for supplying the input signals to the division inputs (101-102). Such driver arrangements (1) no longer require a switch per light source (301-308). The plurality is preferably equal to or larger than two and smaller than the further plurality, and at least some of the first and the second parts are mutually different in size, amplitude or absolute value.

Abstract: A programmable luminaire has arrays of LED's producing different wavelengths of light. A light map specifies how wavelengths of light reaching a plant or other organism are changed throughout a virtual day and over different growth phases of a plant's life. A host interface has a GUI light-map editor allowing a user to edit individual wavelengths in a light map that can be uploaded and shared with other users on a crowdsourcing web site. A large on-line community optimizes the light maps for a specific species of plants or animals. The wisdom of crowds converges until the best wavelengths, intensity and duration are arrived at through ranking, resulting in maximum desired output. Light maps are voted on by users and ranked based on votes, links to other light maps, and yield results. The LED's may be dimmed at intervals during the day for shading and sun fleck.

Abstract: This document discusses, among other things, systems and methods to provide an internal supply rail with over voltage protection using a host power source, an external power source, and a switch configured to receive indications of host and external power source validity. In an example, the switch can be configured to provide the internal supply rail using the host power source when the indication of host power source validity indicates a valid host power source and the external power source when the indication of host power source validity indicates an invalid host power source and the indication of external power source validity indicates a valid external power source.

Abstract: An LED driver IC for driving external strings of LEDs comprises a prefix register and a data register connected in series with each other and with the prefix and data registers in other driver ICs. The prefix and data registers of the driver ICs are connected in a daisy chain arrangement with an interface IC. The interface IC loads data identifying a functional latch into the prefix register and data defining a functional condition into the data register of each driver IC. The data in the data register is then transferred to the functional latch to control the functional condition within the LED driver IC.

Abstract: Location-Based Addressing (LBA) is a method of controlling and commissioning networked lighting devices. The lighting devices communicate over a wireless network using radio frequency communication protocols. The lighting devices are commissioned or grouped based on their respective locations in a building floor plan or a building architecture. The lighting devices are commissioned to respond to radio frequency communications that correspond to their respective locations. This imposed location-based architecture reduces the amount of transmitted data required to control the lighting devices and, thus, reduces the radio bandwidth required to control the lighting devices. In other words, controlling devices “multicast” instructions and controlled devices “listen” for instructions and act only upon instructions that correspond to their respective location. Hand shaking or two-way communication between the controlling devices and the controlled devices is not required.

Abstract: An LED driver IC for driving external strings of LEDs comprises a prefix register and a data register connected in series with each other and with the prefix and data registers in other driver ICs. The prefix and data registers of the driver ICs are connected in a daisy chain arrangement with an interface IC. The interface IC loads data identifying a functional latch into the prefix register and data defining a functional condition into the data register of each driver IC. The data in the data register is then transferred to the functional latch to control the functional condition within the LED driver IC.

Abstract: An LED driver IC for driving external strings of LEDs comprises a prefix register and a data register connected in series with each other and with the prefix and data registers in other driver ICs. The prefix and data registers of the driver ICs are connected in a daisy chain arrangement with an interface IC. The interface IC loads data identifying a functional latch into the prefix register and data defining a functional condition into the data register of each driver IC. The data in the data register is then transferred to the functional latch to control the functional condition within the LED driver IC.

Abstract: This document discusses, among other things, systems and methods to provide an internal supply rail with over voltage protection using a host power source, an external power source, and a switch configured to receive indications of host and external power source validity. In an example, the switch can be configured to provide the internal supply rail using the host power source when the indication of host power source validity indicates a valid host power source and the external power source when the indication of host power source validity indicates an invalid host power source and the indication of external power source validity indicates a valid external power source.

Abstract: To provide an illumination method and a light-emitting device which are capable of achieving, under an indoor illumination environment where illuminance is around 5000 lx or lower when performing detailed work and generally around 1500 lx or lower, a color appearance or an object appearance as perceived by a person, will be as natural, vivid, highly visible, and comfortable as though perceived outdoors in a high-illuminance environment, regardless of scores of various color rendition metric. Light emitted from the light-emitting device illuminates an object such that light measured at a position of the object satisfies specific requirements. A feature of the light-emitting device is that light emitted by the light-emitting device in a main radiant direction satisfies specific requirements.

Abstract: The invention describes electronic devices comprising a metal complex compound having a first metallic centre M1 and a second metallic centre M2 and a polydentate, asymmetrical ligand L1, which contains a phosphido or amido donor D1 bridging the first and second metallic centres M1 and M2, and a further donor D2, which is bonded either to the first or to the second metallic centre, and uses of a complex of this type in the electronic field and for the generation of light, and to the production of devices of this type.

Abstract: Various system embodiments comprise a substrate of high thermal conductivity, a solid state light emitting device, an electric circuit, and an electric dielectric. The device has a die and a connection point to the die with a low thermal resistance. The connection point is in contact with the substrate. The electric circuit is electrically connected to the light emitting device, and separated from the substrate by the electrical dielectric. Various system embodiments comprise at least four color sources; and a controller configured to calculate a solution to form a target color using the color sources when the target is outside of a gamut formed by the color sources. The controller is configured to find an equivalent target color with reduced saturation.

Abstract: Disclosed is a transition metal complex represented by the following formula (1): (wherein M represents a transition metal element; K represents an uncharged monodentate or bidentate ligand; L represents a monodentate or bidentate monoanionic or dianionic ligand; m and o represent an integer from 0 to 5; n represents an integer from 1 to 3; p represents an integer from 0 to 4; W— represents a counterion; and Y1 to Y4, R1, and R2 each independently represent a hydrogen atom, an alkyl group, a cycloalkyl group, a heterocycloalkyl group, an aryl group, an aralkyl group, a heteroaryl group, an alkenyl group, an alkynyl group, or an alkoxy group).

Abstract: A lighting system for new construction and a method for installing a lighting system in a component construction system such as a concrete slab construction system are disclosed. Lighting units are built into the construction components to provide electrical power that may be low voltage electrical power used by LED light engines. The power can be used by temporary task lighting or the lighting units to be used in the finished building. The disclosure provides the lighting units, the lighting units combined with the construction elements, methods of making the combined unit and construction elements, and methods for using the lighting units.

Abstract: A lighting system for areal illumination is disclosed which may include a remote driver and a plurality of fixtures including luminaires. The luminaires may include a light source whose output light level can be adjusted, a light sensor co-located therewith adapted to measure light received from adjacent fixtures. The remote driver may provide power for the light sources of the luminaires.

Abstract: A lighting system for areal illumination is disclosed which includes a remote driver and a plurality of fixtures including luminaires, control devices, and/or standalone sensors. The luminaires include a light source whose output light level can be adjusted, a light sensor co-located therewith adapted to measure light received from adjacent fixtures, and a microcontroller capable of transmitting the output of the light sensor over wires to the remote driver. The remote driver is capable of bidirectional communication with the luminaires and provides independently controllable power for the light sources of the luminaires. A movable orb region containing luminaires can also be defined and the light levels of individual luminaires can be set according to their location within the orb region.

Abstract: An electronic system comprises at least a base part, a power source and at least one electronic module adapted to be powered by the power source. The base part is provided with at least two parallel extending, elongated tracks being electrically conductive. At least one parameter of the electronic module is changeable by amending the distance of the electronic module to a predetermined location on the tracks.

Abstract: A semiconductor light emitting device (10) comprises a semiconductor structure (12) comprising a first body (14) of a first semiconductor material (in this case Ge) comprising a first region of a first doping kind (in this case n) and a second body (18) of a second semiconductor material (in this case Si) comprising a first region of a second doping kind (in this case p). The structure comprises a junction region (15) comprising a first heterojunction (16) formed between the first body (14) and the second body (18) and a pn junction (17) formed between regions of the structure of the first and second doping kinds respectively. A biasing arrangement (20) is connected to the structure for, in use, reverse biasing the pn junction, thereby to cause emission of light.

Abstract: A light emitting device comprising a staggered composition quantum well (QW) has a step-function-like profile in the QW, which provides higher radiative efficiency and optical gain by providing improved electron-hole wavefunction overlap. The staggered QW includes adjacent layers having distinctly different compositions. The staggered QW has adjacent layers Xn wherein X is a quantum well component and in one quantum well layer n is a material composition selected for emission at a first target light regime, and in at least one other quantum well layer n is a distinctly different composition for emission at a different target light regime. X may be an In-content layer and the multiple Xn-containing a step function In-content profile.

Abstract: A method for feeding electric power to a planar light-emitting element which includes a planar anode electrode, a planar cathode electrode, a light-emitting layer provided between the anode electrode and the cathode electrode, two or more anode terminal portions protruding from the anode electrode and one or more cathode terminal portions protruding from the cathode electrode. The method includes sequentially providing the electric power to the anode terminal portions.

Abstract: A fluorescent or light emitting diode-based system for generating light flux. The system comprises a lamp comprising at least one light source for illuminating an area. At least one of the at least one light source is selected from the group comprising at least one of a fluorescent light source or an LED light source. The lamp also comprises a light source controller electrically coupled with the light source and arranged to control the spectral output of the light source. The lamp also comprises a power supply and a switch electrically coupled between the lamp and the power supply and arranged to control the supply of power from the power supply to the lamp.

Abstract: According to embodiments of the present invention, an LED assembly includes a case that encapsulates a post, an anvil and an integrated circuit. The integrated circuit includes positive and negative power supply inputs. The positive power supply input is electrically connected to the post, whereas the negative power supply input is electrically connected to the anvil. The integrated circuit also includes an oscillator input, and an oscillator output. According to these embodiments, an anode lead connected to the post; and a cathode lead is connected to the anvil. Furthermore, an oscillator input lead is connected to the oscillator input and an oscillator output lead is connected to the oscillator output.

Abstract: Solid state lighting devices that can produce white light without a phosphor are disclosed herein. In one embodiment, a solid state lighting device includes a first semiconductor material, a second semiconductor material spaced apart from the first semiconductor material, and an active region between the first and second semiconductor materials. The active region includes a first sub-region having a first center wavelength and a second sub-region having a second center wavelength different from the first center wavelength.

Abstract: Disclosed herein are compounds represented by Formula 1, wherein R1, Ar1, X, Ar2, Ar3, and Het are described herein. Compositions and light-emitting devices related thereto are also disclosed.

Abstract: Light assemblies may contain a light socket assembly powered by an alternating current source, the light socket assembly containing a female socket for threadedly or otherwise receiving a light bulb or a retrofit socket, for example. An AC/DC converter electrically communicates with the light socket assembly thereby providing direct current to the light socket assembly. A first set of direct current contacts communicating with the AC/DC converter is formed within or about the light socket assembly. A solid state lighting source contains a second set of direct current contacts contained within the solid state lighting source, whereby the second set of direct contacts electrically communicates with and corresponds to the first set of direct current contacts. When assembled, the solid state lighting source such as an annular ring coupled to at least one light emitting diode, operably engages the light socket assembly and is fixed about at least a portion of the light socket assembly.

Abstract: The invention provides a lighting device comprising a housing. The housing comprises visible-light sources (10) arranged to generate visible light (11), UV-lightsources (12) arranged to generate UV-light (13), a light exit window (14) positioned to allow transmission of the visible light (11), a photochromic layer (16) positioned upstream of the light exit window (14) and downstream of the visible light sources (10), the photochromic layer (16) comprising at least one area with UV-photochromic material (15), the UV-photochromic material (15) having a first color state and a second color state, and a control unit (40) connected to the UV-light sources (12) for controlling the UV-light sources (12), wherein the UV-light sources are arranged to illuminate the photochromic layer (16). The invention makes it possible to obtain dynamic light effects.

Abstract: A lamp includes an arc tube and a lighting unit for lighting the arc tube. The lighting unit includes a rectifier circuit, a smoothing circuit for partial smoothing, and an inverter circuit having a pair of switching elements. The smoothing circuit smoothes portions of the output voltage of the rectifier circuit below the first voltage value and outputs a voltage that falls between the first voltage value and the second voltage value. The discharge sustaining voltage of the arc tube is set to fall between the first and second values of the voltage Vdc output from the smoothing circuit.

Abstract: A suppressor grid is configured proximate to an anode to produce a suppressor electric field selected to provide a force on an electron in a direction pointing away from the anode, wherein the suppressor electric field is further selected to pass electrons from the suppressor grid to the anode.

Abstract: For providing a lamp lighting device and a filament lamp wherein a wire breakage of the filament lamp can be detected without an excessive consumption of power while the device as a whole is not enlarged, a filament lamp is provided comprising a light emission tube having at least one sealing portion and in the interior of which at least one filament is arranged, internal leads connected to both ends of said filament, metal foils for power supply provided in said at least one sealing portion of the light emission tube and connected to said internal leads, and external leads connected to said metal foils for power supply; wherein a metal foil for detection is provided in said sealing portion and is connected to one of a said internal lead and a said metal foil for power supply, and an external detection lead is provided at said metal foil for detection.

Abstract: An LED light string has multiple LED modules connected in series and a control device connected to the LED modules. Each LED module has a pin assembly, at least one LED chip and a signal controller. The pin assembly has a substrate and multiple pins. The multiple pins include a first power pin, a second power pin, a first signal pin and a second signal pin. The substrate is formed on a top end of the first power pin. The LED chip and the signal controller are mounted on the substrate. The pin assembly, the at least one LED chip and the signal controller are electrically connected to each other. Because the signal controller is integrated in the LED module, the signal controller receives a control signal to activate the LED chip directly.

Abstract: An LED (light emitting diode) glass includes a glass base, a plurality of LEDs mounted on the base, an interlayer disposed on the base and a glass cover disposed on the interlayer. The interlayer defines an opening to receive the LEDs. An outer periphery of the interlayer and two facing faces of the base and the cover form a plurality of grooves in a periphery of the LED glass. An adhesive material is filled in each of the grooves to fix the cover, the interlayer and the base together. A method for manufacturing the LED glass is also provided.

Abstract: An organic light-emitting device includes a first transparent substrate, an organic light-emitting diode and a bi-stable light control element. The organic light-emitting diode is disposed under the first transparent substrate. The bi-stable light control element is disposed under the organic light-emitting diode. The bi-stable light control element is configured to change an optical state thereof according to a received control signal and thereby changing the amount of lights capable of emitting through the bi-stable light control element. A control method for the aforementioned organic light-emitting device is also provided.

Abstract: A visual display is provided through the combined effect of many devices that individually illuminate in response to wind flow. The devices are distributed at different locations within a three-dimensional space, so as to provide an overall illumination effect throughout the space that visually indicates wind (air) or other fluid flowing through the space. Each device can include a housing, at least one light source, a sensor system, and a device controller. The sensor system can include any of various types of sensor subsystems, each having one or more sensors, but includes at least a flow sensor subsystem. The device controller is configured to activate the light source in response to the sensor system detecting a change in an environmentally-related input, such as air flow, sensed by the sensor system.

Abstract: An LED driver IC for driving external strings of LEDs comprises a prefix register and a data register connected in series with each other and with the prefix and data registers in other driver ICs. The prefix and data registers of the driver ICs are connected in a daisy chain arrangement with an interface IC. The interface IC loads data identifying a functional latch into the prefix register and data defining a functional condition into the data register of each driver IC. The data in the data register is then transferred to the functional latch to control the functional condition within the LED driver IC.

Abstract: An LED driver IC for driving external strings of LEDs comprises a prefix register and a data register connected in series with each other and with the prefix and data registers in other driver ICs. The prefix and data registers of the driver ICs are connected in a daisy chain arrangement with an interface IC. The interface IC loads data identifying a functional latch into the prefix register and data defining a functional condition into the data register of each driver IC. The data in the data register is then transferred to the functional latch to control the functional condition within the LED driver IC.

Abstract: A light emitting system is disclosed. The system comprises an active region having a stack of bilayer quantum well structures separated from each other by barrier layers. Each bilayer quantum well structure is formed of a first layer made of a first semiconductor alloy for electron confinement and a second layer made of a second semiconductor alloy for hole confinement, wherein a thickness and composition of each layer is such that a characteristic hole confinement energy of the bilayer quantum well structure is at least 200 meV.

Abstract: In a method and apparatus for propagating optical signals via optical cables such as plastic optical fiber, known as lightguide joint and mingled with the electrical wiring and home automation system for controlling LED illuminators enclosed in standard screw type bulb bases or plug-in bases, such as used for halogen lamp via optical signal propagated through such standard bases. Same optical signals are propagated through power outlets and via power cable assemblies to electrical appliances for controlling the appliances operation and on-off switching. Full range of control, distribution, signal conversion, keypads and touch screen including video interphones monitors and shopping terminals operate and controls such home automation via the optical cables.