Abstract: Lighting fixtures and methods for controlling operation of lighting fixtures are provided. In one example implementation, a lighting fixture includes a first LED array associated with a first color temperature, and a second LED array associated with a second color temperature. The lighting fixture further includes a circuit configured to adjust a power distribution amongst the first LED array and the second LED array based at least in part on a detected toggle input to adjust a color temperature of light output by the lighting fixture.

Abstract: A device includes an analog current division circuit configured to divide an input current into a first current and a second current, and a multiplexer array including a plurality of switches to provide the first current to a first of three colors of LEDs and the second current to a second of three colors of LEDs simultaneously during a first portion of a period, the first current to the second of three colors of LEDs and the second current to a third of three colors of LEDs simultaneously during a second portion of the period, and the first current to the first of three colors of LEDs and the second current to the third of three colors of LEDs simultaneously during a third portion of the period.

Abstract: A lighting device control system for controlling one or more lighting devices includes a first lighting device comprising an optical radiation source, and a portable electronic device. The portable electronic device includes a processor, a user interface, and a memory device. The memory device includes programming instructions to cause the processor of the portable electronic device to: cause the user interface to output a plurality of candidate optical characteristics for the optical radiation source and a user-selectable setting for at least some of the candidate optical characteristics, receive a selection of at least one of the candidate optical characteristics and an associated setting for each of the selected optical characteristics, generate a light operation request that comprises each of the one or more selected optical characteristics and its associated setting and an account identifier, and transmit the light operation request to the first lighting device.

Abstract: A headlamp assembly, an optical system and a method for generating a hybrid luminous intensity are provided. The headlamp includes a low beam assembly and a high beam assembly. The low beam assembly is configured to generate a low beam distribution. The low beam assembly includes a plurality of low beam modules including at least one high luminance source optically configured to emit a first luminous intensity distribution and at least one light source optically configured to emit a second luminous intensity distribution. The high beam assembly includes one or more high beam modules.

Abstract: A lighting control system is provided to reduce the time, cost, and potential for error during device commissioning. A controller is programmed to obtain voice commands from a user and to identify and implement device commissioning modes based at least on the obtained voice commands. In a first commissioning mode, the controller configures one or more buttons or equivalent actuators on a control switch mounted in association with a lighting zone. In a second commissioning mode, the controller assigns device grouping and/or configuration data for a plurality of lighting devices (e.g., lighting fixtures, occupancy sensors, light sensors) in operable connection with the control switch. The controller may further in another commissioning mode identify one or more second lighting devices added to or exchanged with one or more of the plurality of first lighting devices and assign device grouping and/or configuration data thereto.

Abstract: An ultraviolet irradiation device includes a light source unit, a drive circuit, a sensing unit and a controller. The light source unit includes a plurality of light emitting devices and outputs ultraviolet light as irradiating light. The drive circuit supplies a drive current (Id) to the plurality of light emitting devices. The sensing unit senses a trouble in the plurality of light emitting devices. The controller controls the drive current (Id) in accordance with a result of sensing by the sensing unit. When an output of the light source unit is reduced due to a trouble in one or some of the plurality of light emitting devices, the controller controls the drive current (Id) of a plurality of light emitting devices other than the light emitting device in trouble so as to compensate reduction in the output of the light source unit.

Abstract: A light source device includes: a semiconductor light source; a switching element connected in series to the semiconductor light source; a drive circuit that turns on the switching element when a first control signal based on a PWM signal is in a first logic state; a switching power supply circuit that supplies a current to the semiconductor light source; a current detection element that detects a current flowing through the semiconductor light source and generates a current detection signal; a current detection circuit that sample-holds a current detection signal for a period shorter than an activation period of the PWM signal; an error amplifier that generates an error signal by amplifying the difference between a current control signal and an output signal of the current detection circuit; and a control circuit that generates a second control signal for controlling the switching power supply circuit based on the error signal.

Abstract: Provided is a technique that facilitates control of a navigation light which uses light-emitting diodes for a light source. This navigation light control system is provided with: a navigation light that has a light source for which a light-emitting diode is used; a power supply unit that supplies power to the navigation light; and a control device that controls lighting of the navigation light, wherein the control device is provided with a light source circuit that supplies the power received from the power supply unit to the light source, and a determination unit that determines failure of the light source on the basis of the value of the current flowing through a resistor connected to the light source circuit.

Abstract: A vehicle lighting system is provided in a vehicle capable of traveling in an automated driving mode. The vehicle lighting system includes a headlamp mounted on a front of the vehicle, an automated driving system (ADS) lamp configured to emit light toward an outside of the vehicle to visually present information relating to automated driving of the vehicle, and a lighting control unit configured to control visual modes of the headlamp and the ADS lamp. The lighting control unit is configured to change the visual mode of the headlamp such that visibility of the ADS lamp from the outside of the vehicle is improved according to at least turning-on of the ADS lamp.

Abstract: Embodiments of a photoarray system are provided. In one embodiment, a photoarray system includes a lixel array comprising a plurality of lixels each supporting one or more radiation sources; a power source associated with the lixel array; and a control system associated with the power source and each of the radiation sources, the control system comprising a master processor-readable medium configured to store at least a portion of data that specifies at least one lixel illumination pattern, the control system further comprising master processing structure configured to regulate use of power individually by each of the radiation sources based on the at least one lixel illumination pattern.

Abstract: A system for controlling lighting devices at one or more light-enabled facilities includes a processor in communication with a portable electronic device. The processor is configured to transmit a set of available scenes for one or more gateway controllers to the portable electronic device, receive a light operation request comprising a selected scene and a time duration from the portable electronic device, determine whether the portable electronic device is authorized to cause a gateway controller associated with the selected scene to implement the light operation request, and if the portable electronic device is authorized to cause the gateway controller associated with the selected scene to implement the light operation request, transmit the light operation request and an authorization token to cause the gateway controller to activate at least one lighting device according to the selected scene and the time duration to the gateway controller associated with the selected scene.

Abstract: Different wavelength conversion materials, or different concentrations of a wavelength conversion material are used to encapsulate the light emitting elements of different colors of a hybrid light emitting module. In an embodiment of this invention, the light emitting elements of a particular color are encapsulated with a transparent encapsulant, while the light emitting elements of a different color are encapsulated with a wavelength conversion encapsulant. In another embodiment of this invention, a particular set of light emitting elements of different colors is encapsulated with a different encapsulant than another set of light emitting elements.

Abstract: A device having a light emitting diode (LED) of a red-green-blue type, a pulse width modulation (PWM) control, a current supply, and a microcontroller. The RGB LED device arranged for setting a PWM duty cycle using the PWM control and for supplying to the LED either a current of a first value or a current of a second value higher than the first value from the current supply. A method for calibrating the LED of the RGB LED device by measuring sets of tristimulus values when the PWM duty cycle and currents are applied, and calculating from the measured tristimulus values parameters to express colour intensity as a function of PWM duty cycle under the applied current. A method for operating the RGB LED device where calibration parameters linked to the use of a current having a low value and calibration parameters linked to the use of a high current value are determined and used to account for a possible working point shift when switching between the two currents.

Abstract: Lighting systems, devices, methods and apparatus for simulating a candle flame are disclosed. The systems and methods employ spatially distributed, disjointed sets of light-emitting elements that are independently controlled with randomized control signals to simulate a candle flame by forming spatially and temporally varying lighting effects. Further, the disjointed sets are controlled such that the total light intensity is essentially maintained. In addition, systems and methods employ a transition probability model to adjust intensities of light-emitting elements in a way that accurately mimics a candle flame.

Abstract: A processor receives data associated with a device. On the basis of the data associated with the device, the processor modulates a light from the artificial light source at a rate imperceptible to a human eye while detectable by a light sensor device. The modulated light is representative of the data associated with the device. The modulated light is detected, demodulated, and decoded by the light sensor device to retrieve the data associated with the device. Further, the data associated with the device is presented by the light sensor device to a user. In addition, the light sensor device is configured to receive input data from the user and communicate the input data to the processor via a wireless link. The processor is configured to receive the input data from the light sensor device and effect a change in a characteristic of the device based on the received input data.

Abstract: A vehicle front headlight device includes a light source, a rotating mirror that is configured by disposing a first mirror body and a second mirror body around a circumferential direction of a shaft, that is rotationally driven about the shaft and rotates while reflecting light emitted by the light source, a lens that transmits light reflected by the rotating mirror so as to illuminate the light forward, and a controller for controlling rotational drive of the rotating mirror. A first illuminated region of light that is reflected by the first mirror body and that is radiated forward through the lens, and a second illuminated region of light that is reflected by the second mirror body and that is radiated forward through the lens, are offset from each other in a vehicle width direction or in a vehicle vertical direction.

Abstract: A control device is configured to control one or more electrical loads in a load control system. The control device is a wall-mounted device such as dimmer switch, a remote control device, or a retrofit remote control device. The control device includes a gesture-based user interface for applying advanced control over the one or more electrical loads. The types of control include absolute and relative control, intensity and color control, preset, zone, or operational mode selection, etc. Feedback is provided on the control device regarding a status of the one or more electrical loads or the control device.

Abstract: A method of performing a diffused light color temperature switching control for an LED lamp includes using at least a first LED lighting load emitting a first color temperature light and at least a second LED lighting load emitting a second color temperature light, using a light diffuser covering the first LED lighting load and the second LED lighting load to create a diffused light with a diffused light color temperature, using a power allocation circuitry working with a power allocation algorithm to manage different electric powers respectively delivered to at least the first LED lighting load and at least the second LED lighting load while keeping a total electric power unchanged to generate diffused lights with different diffused light color temperatures.

Abstract: A lighting system includes a lighting device that further includes a housing, and light emitting diode (LED) modules positioned in an opening of the housing to emit light away from the housing. Each LED module includes a substrate, a plurality of module-level conductors, and a plurality of LED sets, each of which comprises a first section including a first group of LEDs, one or more additional sections (each including an additional group of LEDs), a first conductive element that electrically connects the first section to a first one of the module-level conductors, and one or more additional conductive elements. The lighting system also includes control circuitry configured to generate commands to control drive currents delivered to a first group of LEDs in each LED set and each additional group of LEDs in each LED set so that the lighting device emits light of a specified color temperature.

Abstract: The invention relates to an electrode assembly (5) for generating a non-thermal plasma, comprising a first electrode (7) and a second electrode (9) which are electrically insulated from each other by means of a dielectric element (11) and which are arranged at a distance from each other. The first electrode (7) has a thickness of at least 10 ?m when seen in the direction of the distance between the electrodes (7, 9), and the second electrode (9) has a thickness of at least 1 ?m to maximally 5 ?m or a thickness of at least 5 ?m to maximally 30 ?m when seen in the direction of the distance between the electrodes (7, 9). The dielectric element (11) has a thickness of at least 10 ?m to maximally 250 ?m.