Abstract: A retrofitted light fixture can include an existing power supply of an existing light fixture that receives, when in a retrofitted state, AC mains power directly from a power source and delivers primary power to one or more existing light fixture components of the existing light fixture. The retrofitted light fixture can also include an adapter coupled to and disposed between the existing power supply and the power source, where the adapter provides the AC mains power to the power supply, where the adapter includes at least one retrofit component lacking from the existing light fixture, where the at least one retrofit component comprises a controller and a transceiver.

Abstract: A method of guiding a vehicle user approaching or exiting a vehicle. The method comprises projecting, by means of illumination from one or more light sources associated with the vehicle, a distinct illuminated path on the ground. The distinct illuminated path on the ground extends between the vehicle and a location remote from the vehicle. A light guidance system (10) for a vehicle (12), the system comprising one or more light sources (20, 22, 24, 26, 28, 30) associated with the vehicle and configured to project at least part of a distinct illuminated path (64) on the ground between the vehicle and a location remote from the vehicle.

Abstract: A light emitting diode (LED) fixture includes an electrical connector that is configured to receive an input signal from a constant current network that has a voltage in a range from a first voltage value to a second voltage value; an LED load; an LED driver circuit coupled to the LED load, the LED driver circuit configured to operate between a third voltage value and a fourth voltage value, wherein the third voltage value is greater than the first voltage value; and a conversion circuit coupled between the electrical connector and the LED driver circuit, the conversion circuit configured to output an electrical signal in response to the input signal from the constant current network, the electrical signal having a voltage that is between the third voltage value and the fourth voltage value.

Abstract: A distributed control system including a plurality of controllers, each controller of the plurality of controllers being in communication with the remaining controllers of the plurality of controllers, each controller being configured to control at least one device, each controller being further configured to: initiate a first timer, in response to a received signal, the first timer having a length that is unique with respect to the first timer lengths of the remaining controllers of the plurality of controllers; send a first notification signal, upon the expiration of the first timer, to the remaining controllers notifying the remaining controllers of an intent to send a command signal; send the command signal to the at least one device, wherein the controller is configured to cancel sending the notification signal and the command signal if the notification signal is first received from one of the remaining controllers of the plurality of controllers prior to the expiration of the first timer.

Abstract: A lighting apparatus for show-business or entertainment sector comprises a light-radiation generator for projecting a lighting beam towards a lighting space that includes one or more undesired lighting zones. A motorization causes the lighting beam to scan the lighting space as a function of scanning-control signals as received by the lighting apparatus. Driving circuitry is provided, configured to control emission of the lighting beam, as well as processing circuitry configured to sense the scanning-control signals received and the scanning position of the lighting beam of the light-radiation generator. As a result of the detection of received scanning-control signals that can lead the lighting beam to being brought into the undesired lighting zone, the processing circuitry acts on the motorization and/or on the driving circuitry of the light-radiation generator, containing projection of the lighting beam directed towards the undesired lighting zone and preventing possible risks of a photobiological nature.

Abstract: A light source system includes an illumination device configured to generate illumination light, and a light source module having a function of supplying light to the illumination device and configured to be detachably attached to the illumination device. The illumination device includes a first light source and a first storage configured to store characteristic information of the first light source. The light source module includes a second light source and a second storage configured to store characteristic information of the second light source. The illumination device includes a control circuit configured to determine a driving condition of at least one of the first and second light sources, based on the characteristic information of the first and second light sources.

Abstract: A vehicle headlamp control circuit may be configured to control a vehicle headlamp comprising a plurality of lighting elements. The vehicle headlamp control circuit may comprise a first communication interface configured to receive a first signal comprising a first set of values for driving the plurality of lighting elements, and a second communication interface configured to receive a second signal comprising an intensity threshold. The circuit may be configured to determine a composite intensity associated with the first set of values and drive the plurality of lighting elements using the first set of values if the composite intensity associated with the first set of values satisfies the intensity threshold.

Abstract: The driver circuit according to the invention includes a receiver module, a counter unit, isolation units and a voltage regulation unit. The receiver module receives an initiation signal and performs filtering using a low-pass filter to convert the initiation signal into a driving signal which is transmitted to the counter unit. Upon receiving the driving signal, the output terminals of the counter unit are sequentially activated to output a control signal. The isolation units may be diodes or transistors adapted to output an isolated control signal. The voltage regulation unit includes a plurality of resistors and is adapted to output a control voltage corresponding to one of the resistors according to the isolated control signal. The control voltage is useful in shifting the operation of an electrical device from one operation state to another.

Abstract: Various examples concern techniques for opto-mechanically manipulating LED-based lighting systems. More specifically, various embodiments concern creating patterns of colored LEDs by determining the preferred color-specific density distribution and sequence(s) of LEDs. When creating the patterns, multiple considerations can be taken into account, including the power to be shared amongst the color channels when certain color models are generated by the linear array of LEDs, allocating an appropriate number of LEDs to each color channel to support the desired color spectrum, the sequencing of those LEDs along a string (e.g., as part of a linear array), etc. The appropriate number of LEDs for each color channel may be determined by first establishing the color model of the linear array within which the LEDs are interleaved.

Abstract: A method and apparatus for modifying a dynamic lighting effect, where that effect is considered or deemed unfavourable, by obtaining information of the dynamic lighting effect for at least part of a an area illuminated by said effect; determining, based on the obtained information, a modifying lighting pattern to modify the effect of said dynamic lighting, and controlling one or more luminaires to output the modifying lighting pattern selectively to a target portion of the illuminated area.

Abstract: The present invention provides a self-adaptive dimming driving system, configured to work with a light-emitting diode (LED) power port, the self-adaptive dimming driving system comprising: a driving circuit, a forward bias voltage detection circuit, and a controller. The driving circuit is connected to the LED power port. The forward bias voltage detection circuit is connected between the LED power port and the driving circuit, Wherein the forward bias voltage detection circuit comprises a test current output module and a voltage feedback module, the test current output module is configured to output a test current to the LED power port, and the voltage feedback module is configured to output a detection signal according to a voltage parameter of the LED power port. The controller receives the detection signal, obtains a barrier potential parameter of an LED lamp according to the detection signal, and switches a power output mode of the driving circuit according to the barrier potential parameter.

Abstract: A circuit may be configured to control a vehicle headlamp comprising light emitting diodes (LEDs). The circuit may comprise an LED controller configured to receive video data from a video source via a first interface; an LED driver configured to drive the LEDs based at least in part on the video data; and a second interface between the LED controller and the LED driver, wherein the second interface is configured to communicate the video data from the LED controller to the LED driver and wherein the second interface communicates the video data at a slower data rate than the first interface.

Abstract: A method of controlling a lighting device is disclosed. The method comprises: detecting a first location of a user in an area, obtaining a second location of the lighting device and/or its light effect in the area, obtaining object information about an object, the object information comprising at least dimensions of the object and a third location of the object in the area, determining, based on the first, second and third location and the object dimensions, if the object is located between the user and the lighting device and/or its light effect, and controlling the lighting device based on the determination.

Abstract: The present disclosure provides intelligent lighting control systems.

Abstract: A vehicle includes a puddle lamp control system configured to control a puddle lamp to display vehicle identification information, passenger information, advertisements, company logos, and other information on a ground surface proximate to the vehicle. The puddle lamp control system may communicate with a central server using high-speed wireless communication protocols such as Wi-Fi, Wi-max, or other protocols to select images and animations based on vehicle location and pedestrian activity nearby the vehicle. The system may also activate the vehicle puddle lamps based on vehicle sensor triggers associated with vehicle location, based on population and pedestrian density indicative of potential message viewers indicating when pedestrians are close enough to the vehicle to view the advertisement, and based on ridehail activity such as ridehail user information, and seat assignments. The messages and images may be customized using an interface device onboard the vehicle.

Abstract: A communication network for networking lighting systems of home and office technology involves an application on a mobile terminal that can control lighting systems in the surroundings of the mobile terminal. The lighting systems in the interior of a vehicle are also networked and the lighting systems are controlled depending on the lighting settings of a screen of the mobile terminal.

Abstract: The disclosure provides a method, a device and a system for controlling partition lighting of a conference room based on a wireless networking technology. The lighting equipment is divided into at least one group according to the area, and each group of lighting equipment has an independent lighting equipment group number. The method includes: presetting at least one working mode and a corresponding lighting equipment group number, generating and storing at the control panel a worksheet, querying the worksheet, and obtaining a lighting equipment group number, broadcasting a wireless control command carrying the lighting equipment group number, and performing a corresponding operation according to the wireless control command.

Abstract: A muzzle flash simulator for simulating the visual effect of muzzle flash of the real firearms, configured to illuminate projectiles passing away from an internal passage, includes multiple illuminating components and multiple combinations of sets of instructions for each one of the illuminating components at indicated time periods, to create various beam effects in front of the internal passage.

Abstract: A control method for a luminaire with a daylight sensor, comprising: obtaining a first value (?) representative for the angle of the sun with respect to the horizon; if the obtained first value is within a first predetermined range corresponding with a dusk or dawn range, performing the following steps: obtaining a second value (Ev) representative for a light level using the daylight sensor of the luminaire; and controlling the switching on or off of the luminaire when the obtained second value (Ev) fulfils a first predetermined criterion; registering over time, for at least one determined obtained second value, at least one corresponding obtained first value (?); and/or, for at least one determined first value, at least one corresponding obtained second value (Ev); adjusting the first predetermined criterion based on the registrations over time.

Abstract: The present invention discloses a lighting installation having an LED lamp (19), normally consisting of a series string of individual LED's (18), which is supplied by a rectifier (20, 200). A control circuit (23, 23 & C1) is interposed between the rectifier and the AC supply which powers the rectifier. Various circuits for filtering, power factor control, multi-phase operation and dimming, for example by phase switching, are disclosed. In particular, the control carried out by the control circuit takes place on the AC side of the rectifier. Also disclosed are the control circuit per se and a method of converting a High Intensity Discharge (HID) lamp installation into a Light Emitting Diode (LED) installation. The control circuit can take the form of an inductor, an inductor and series capacitor, a shunt inductor, a leakage reactance transformer, a constant current transformer, an autotransformer, an isolation transformer or a ferro-resonant transformer.