Abstract: A lighting network includes a lighting network base station and one or more contactless lighting network components. The lighting network base station includes: a radio frequency (RF) amplifier which supplies an RF power signal to a lighting network line pair; and a first power line communication coupler which couples the lighting network line pair to a first power line communication device. The contactless lighting network component extracts electrical power from the RF power signal on the lighting network line pair, and couples the lighting network line pair to a second power line communication device. The first and second power line communication devices communicate network data via the lighting network line pair. The contactless lighting network component may include a lighting fixture (e.g., including one or more LED light sources), a sensor, and/or a lighting network interface adaptor.

Abstract: Aspects of the subject technology relate to control circuitry for light-emitting diodes. The control circuitry may include a feedforward loop and a feedback loop for a power supply for the light-emitting diodes. The light-emitting diodes may be arranged in strings that are individually controllable by a current control transistor on the string. The feedforward loop may determine a total upcoming load current for the power supply based on reference voltages for controlling each of the current control transistors. The output of the power supply may be modified based on a combination of a current from the feedforward loop and a current from the feedback loop.

Abstract: Driver circuitry is configured to generate a control signal for a switching device that controls supply of load current to a load. The driver circuitry includes current control circuitry, modulation circuitry, and signal generation circuitry. The current control circuitry is configured to generate a current signal indicative of whether the load current has reached a reference current. The modulation circuitry is configured to generate a modulation signal having an ON-time that is based at least on a desired amount of current to be supplied to the load. The signal generation circuitry is configured to generate the control signal based at least on the current signal and the modulation signal.

Abstract: An integrated device for driving a lighting load, such as a LED, has a first memory element, configured to store a nominal duty-cycle at a nominal supply voltage. An actual voltage acquisition element is configured to detect an actual supply voltage. A processing unit is coupled to the first memory element and to the actual voltage acquisition element and configured to calculate a voltage compensated duty-cycle. A driver unit is coupled to the processing unit and is configured to be supplied according to the voltage compensated duty-cycle.

Abstract: A luminaire includes: a light source configured to emit light in a plurality of different colors; a controller that controls the color of the light emitted by the light source; and a plurality of buttons that correspond one-to-one with the plurality of different colors and are operated by a user to cause the light source to emit light. Each time one of the buttons is operated, the controller stores a control parameter associating the color corresponding to the button operated with a sequence value indicating a sequential order in which the button is selected. The controller changes the color of the light emitted by the light source in accordance with the colors and the sequential order indicated in the stored control parameter.

Abstract: A lighting module, including: a baseboard configured to receive a user signal indicating a user lighting preference; a communication submodule configured to receive the user signal and convert the user signal to machine readable data indicating the user lighting preference; a control submodule communicably coupled to the wireless communication submodule for receiving the machine readable data, wherein the microcontroller submodule comprises: memory configured to store a lighting parameter provided by a provider, and a processor configured to generate lighting driver instructions based on the user lighting preference and the lighting parameter; and a lighting mode output submodule configured to output the lighting driver instructions to a lighting driver module of a lighting assembly for controlling light emitting elements of the lighting assembly.

Abstract: A method of controlling a lighting system comprising at least two luminaires arranged to illuminate a physical space, to render a version of a selected scene image. The method comprising: capturing at least one image of the physical space; using the captured at least one image to determine, for each of the luminaires, at least one location in the physical space associated with that luminaire; receiving a selection of a scene image to be rendered; processing the selected scene image to select at least two colors in the scene image and determining a respective location of each selected color in the scene image; comparing the determined scene image locations with the determined luminaire locations so as to identify, for each of the determined scene image locations, a matching one of the determined locations in the physical space; and controlling the luminaires to render the scene image, based on said comparison.

Abstract: A dimming circuit for an indicator switch has a control input, a dimming state and a non-dimming state. The dimming circuit is responsive to the presence of a backlight PWM signal at the control input of the dimming circuit to switch to the dimming state and responsive to the absence of the backlight PWM signal at the control input of the dimming circuit to switch to the non-dimming state. In the dimming state a high resistance of the dimming circuit is coupled in series with the indicator LED and a LED drive output of the function control module and in the non-dimming state a low resistance of the dimming circuit is coupled in series with the indicator LED and the LED drive output of the function control module. The high resistance has a resistance higher than the low resistance.

Abstract: A light emitting device includes: a first white light source which includes N pieces of first white light emitting diodes and emits a first white light; and a second white light source which includes M pieces of second white light emitting diodes and a first resistance element electrically connected in series to the second white light emitting diodes and having a first resistance value, is electrically connected in parallel to the first white light source, and emits a second white light, the light emitting device emitting a mixed white light of the first white light and the second white light. The drive voltage of the first white light source is higher than a drive voltage of the second white light source, and a color temperature of the mixed white light is higher as a total luminous flux of the mixed white light is higher.

Abstract: A light emitting device includes: a first white light source which includes N pieces of first white light emitting diodes and emits a first white light; and a second white light source which includes M pieces of second white light emitting diodes and a first resistance element electrically connected in series to the second white light emitting diodes and having a first resistance value, is electrically connected in parallel to the first white light source, and emits a second white light, the light emitting device emitting a mixed white light of the first white light and the second white light. The drive voltage of the first white light source is higher than a drive voltage of the second white light source, and a color temperature of the mixed white light is higher as a total luminous flux of the mixed white light is higher.

Abstract: An illumination control system includes a manipulation detector and an electric power controller. The electric power controller stops supply of electric power to a plurality of lighting apparatuses when an OFF manipulation is detected. The electric power controller starts the supply of the electric power to the lighting apparatuses when an ON manipulation is detected after detection of the OFF manipulation and before a first timing, or when the ON manipulation is detected at or after a second timing. The first timing is a timing at which a threshold time which is predetermined has elapsed since the detection of the OFF manipulation. The second timing is a timing at which a predetermined forced interruption time has elapsed since the first timing.

Abstract: This disclosure describes methods and apparatuses for controlling an isolated diming circuit. An exemplary circuit may include a voltage input device, a noninverting operational amplifier in electrical communication with a optoelectric coupler, an optoelectric coupler incorporating emitting and receiving photodevices, an inverting operational amplifier in electrical communication with the optoelectric coupler, a voltage output device in electrical communication with the inverting operational amplifier, and a lighting device.

Abstract: An increase in the execution period of light distribution control is inhibited by reducing the number of images required for the light distribution control while achieving both object detection and light distribution control function. The present invention has an object detection unit for performing an object detection process, a light point detection unit for performing a light point detection process, and a light distribution control unit for controlling the illumination state of headlights on the basis of the result of the object detection process and the result of the light point detection process.

Abstract: A light emitting diode (LED) lighting system includes a power factor correction (PFC) controller that determines at least one power factor correction control parameter from phase delays of a phase modulated signal. In at least one embodiment, a peak voltage of the phase modulated signal is a PFC control parameter used by the PFC controller to control power factor correction and generation of a link voltage by a PFC LED driver circuit. The phase delays are related to a peak voltage of the phase modulated signal. Thus, in at least one embodiment, detecting the phase delay in one or more cycles of the phase modulated signal allows the PFC controller to determine the peak voltage of the phase modulated signal.

Abstract: Provided is a lighting apparatus including a memory configured to store wireless network information of the lighting apparatus, a detection circuit configured to detect an alternating current signal supplied to the lighting apparatus, and a processor configured to initialize wireless network information of the lighting apparatus, based on the detected alternating current signal.

Abstract: A method of controlling an LED driver can include: generating a first comparison signal using a first reference voltage, the first comparison signal having a duty cycle in accordance with an alternating current input voltage generated by a transformer of the LED driver, and representing an operation frequency of an input source; generating a conversion voltage signal by an averaging operation of the first comparison signal with a time constant that is greater than a switching period of an electronic transformer; generating a second comparison signal by comparing the conversion voltage signal against a second reference voltage; and determining whether the transformer is the electronic transformer or a power frequency transformer based on the second comparison signal.

Abstract: A lighting system includes a plurality of lighting devices and a terminal. The terminal includes a display screen, an input unit, a communication unit, and a device controller. The device controller (i) obtains, from outside the terminal, setting information including attribute information indicating at least one attribute regarding an installation location of each of the plurality of lighting devices, (ii) associates each of the plurality of lighting devices with any of the at least one attribute indicated by the attribute information included in the obtained setting information according to a dialog with an operator using the display screen and the input unit of the terminal, so as to classify the plurality of lighting devices under groups.

Abstract: Disclosed is a method of determining depreciation of a lumen output of an LED. More particularly, disclosed is a method of determining depreciation of a lumen output of an LED comprising monitoring, by a processing device, an operating characteristic of an AC power source operatively coupled to the LED; determining, by the processing device, whether a lumen output the LED depreciated beyond a specified lumen value based on the monitoring; and causing, by the processing device, an indicator to provide notification to a user based on determining the lumen output of the LED depreciated beyond the specified lumen value.

Abstract: The invention provides a multi-channel independent control circuit of lighting power supply, including a power supply control circuit, a transformer, a main current rectifier circuit, a feedback circuit and a main current output circuit, and also including one or more secondary side units. The secondary side unit includes secondary windings, secondary side rectifier circuit, secondary side output circuit, switching circuit, detector and logic control circuit, the secondary side winding is couple to the primary winding, the secondary side rectifier circuit and the secondary side output circuit are sequentially connected in parallel across the loop of the secondary winding, the detector is disposed in the secondary side output circuit and an output end of the detector is connected to an input end of the switching circuit through the logic control circuit. An output end of the switching circuit is connected to the secondary side output circuit.

Abstract: A lighting system including a lighting support frame and lighting fabric and a lighting support assembly connected to the lighting support frame and lighting fabric, the lighting support frame or the lighting support assembly including one or more lighting elements. The lighting system further includes an artificial intelligence (AI) device housing coupled to the lighting support assembly, the AI device housing including one or more microphones, one or more processors, one or more memory devices, and computer-readable instructions stored in the one or more memory devices and executable by the one or more processors to receive audible commands and convert the received audible commands to one or more sound files.