Abstract: An exterior aircraft light unit includes a power input coupleable to an aircraft on-board power supply; at least one LED coupled to the power input for receiving power from the aircraft on-board power supply and configured to emit a light output; an optical sensor arranged for sensing an intensity detection portion of the light output and configured to output a detection signal indicative of an intensity level of the light output; an end of life detector, coupled to the optical sensor for receiving the detection signal and configured to determine an end of life condition; and a fuse circuit coupled to the end of life detector; wherein the fuse circuit is configured to irreversibly disable an LED circuit board upon the end of life detector communicating the end of life condition to the fuse circuit.

Abstract: A smart lamp comprising: a lamp; and a processor configured to operate said lamp, said processor having at least active and standby modes of operation, in said active mode, said processor uses a first communication protocol having a first power consumption, and, in said standby mode, said processor uses a second communication protocol having a second power consumption, wherein said first power consumption is significantly higher than said second power consumption.

Abstract: A system includes at least one signal light having at least one lamp. The system further includes a control device electrically connected to the at least one lamp by a conductive cable. The at least one lamp is configured to flash in response to the loss of an audio signal generated by the control device.

Abstract: Disclosed are methods and apparatus for a lighting unit that may adaptably achieve a plurality of lighting effects. A plurality of LEDs (541A-G, 641) producing a light output having at least one adaptable light output characteristic may be provided and controlled by a controller 650 electrically coupled to the plurality of LEDs (541A-G, 641). The controller may control the at least one adaptable light output characteristic in accordance with received lighting configuration data that is specific to a particular lighting implementation.

Abstract: The invention provides a circuit for improving the stability of the backfeed of driving power supplies, including a reference resistor, a current measuring resistor, a comparator, a logic circuit, a driving circuit and a load, and also including a control circuit, a current limiting resistor, an energy storage capacitor, and a resistor for generating a voltage difference of the residual current, an output end of the comparator is connected to one end of the current limiting resistor, the other end of the current limiting resistor is simultaneously connected to one end of the resistor for generating a voltage difference of the residual current and an input end of the logic circuit, a backfeed voltage between the current limiting resistor and the resistor for generating a voltage difference of the residual current is directed to the logic circuit, the other end of the resistor for generating a voltage difference of the residual current is connected to one end of the energy storage capacitor.

Abstract: An automotive headlight is disclosed including: an optical unit including a plurality of optical elements, each optical element having a different central direction; a segmented light-emitting diode (LED) chip including a plurality of LEDs that are separated by trenches formed on the segmented LED chip and arranged in a plurality of sections, each section being aligned with a different respective optical element, and each section including at least one first LED and at least one second LED; and a controller configured to: apply a forward bias to each of the first LEDs, apply a reverse bias to each of the second LEDs, and change a brightness of the first LEDs in any section based on a signal generated by the second LED in that section.

Abstract: The present disclosure provides a method for powering a light fixture to provide a constant light output. In one embodiment, the method includes providing a current to one or more light emitting diodes (LEDs), monitoring an external ambient temperature and increasing the current to the one or more LEDs as the external ambient temperature rises to maintain the constant light output.

Abstract: A lighting device includes a light source to emit a modulated light, a memory device for storing an access code of a wireless network, and a controller to control generation of the modulated light based on the access code, wherein the access code is extractable from the modulated light by a light receiving device.

Abstract: An apparatuses, methods, and systems for a distributed network of a structure that provides location-based human interaction and intelligent use of the structure are disclosed. The distributed network includes wireless transceivers, sensors, asset tags, and a controller electronically connected to the wireless transceivers, the sensors and the asset tags. At least one wireless transceiver is operative to transmit time-based tokens through a low-power first network, wherein the low-power first network includes the plurality of wireless transceivers. The controller is operative to receive modified time-based tokens from a mobile device or at least one of the plurality of asset tags through a second network, wherein the modified time-based tokens include identification information of the mobile device or the at least one asset tag that has been appended to the time-base tokens, and perform location-based intelligence based on the identification information and the time-based tokens.

Abstract: Disclosed is a control circuit of an LED lighting apparatus, capable of reducing total harmonic distortion (THD). The control circuit may include a THD reduction circuit configured to control a driving current on a current path corresponding to light emission of an LED group in response to a change of a rectified voltage.

Abstract: A solid state lighting apparatus can include a plurality of light-emitting devices (LEDs) that are electrically coupled together in at least one string. The apparatus can further include a first LED segment that is configured to emit a first chromaticity light coupled across a first bypass circuit, a second LED segment that is configured to emit a second chromaticity light coupled across a second bypass circuit, and at least one additional LED segment that is configured to emit an additional chromaticity light coupled across a respective at least one additional bypass circuit. A control circuit can be configured to modulate the at least one additional bypass circuit, to cause the lighting apparatus to emit an additional v? shift in a chromaticity value of light emitted by the string to vary substantially in conformance with a Planckian locus in response to a dimming input to the control circuit.

Abstract: An illumination device, system and method are provided herein for emulating sunlight along a daytime or nighttime locus. Sunlight is emulated depending on the path length of the sun relative to a structure containing the illumination device and system. One or more illumination devices can be grouped together and perform the sunlight emulation along the locus by producing different color temperatures throughout the day by all illumination devices within that group producing the same color temperature changes throughout the day. Moreover, a particular advantage of the preferred embodiments is the ability to manually change at any time the emulated natural sunlight output from the one or more groups of illumination devices and advantageously change the color output more so at certain times than at other times by simply actuating a trigger on a dimmer associated with a virtual or physical keypad.

Abstract: An apparatus, system, and method for lighting effects, including simulating a flame. A three dimensional carrier includes an array of a plurality of light sources distributed on it. A control circuit coordinates on/off of the light sources in a manner to simulate a jumping flame. In one embodiment, the three dimensional carrier and LEDs are encapsulated in an at least partially light transmissive cover. This light modular engine includes a control circuit and an interface to electrical power. The system can include the light engine in a light fixture such as an architectural fixture. The methodology can include a sequence of on/off and brightness variations for the array of light sources.

Abstract: Techniques are disclosed to operate a luminaire so as to reduce glare experience by an occupant within an area illuminated by a luminaire. The luminaire includes individually operated light sources. An image capture device is deployed for capturing an image of an area. Operatively coupled to the luminaire and the image capture device is a computing system. The computing is configured to reduce glare by adjusting a light intensity of a light source of the luminaire. These adjustments are based on, for example, a position of an occupant within the area and a direction in which the occupant is facing relative to the luminaire, and/or a position of an indirect glare source.

Abstract: LED driver apparatus and methods may include a sensing circuit for adjusting an output based on either a pulse width modulation dimming control or an analog dimming control. An LED driver apparatus and methods may also include a sensor for a parameter such as temperature and for recording such parameter, for example as a function of time. A setting unit for an LED driver apparatus can be used to sense and/or adjust settings in the LED apparatus even when the LED apparatus is not independently powered.

Abstract: A current driver integrated circuit (IC) is coupled to control current flow through a diode. In one example, the diode is a Light Emitting Diode (LED) having an anode coupled to a supply node supplied by a battery and a cathode coupled to a drive terminal of the current driver IC. During operation the current driver IC is enabled and sinks an output current from the supply node, through the LED, through the drive terminal, and onto a ground node. As current flows through the LED, the battery is discharged. Changes in battery voltage cause an output voltage between the cathode of the LED and the ground node to change. Despite variations in output voltage, the current driver IC maintains a current level of the output current to be within five percent of a desired output current level across an output voltage range of at least 2V.

Abstract: A client-server system and a blockchain method for calculating whether a time-crucial shipment is located according to an expectation comprising a client device adapted for being adhered to or placed within a time-crucial package shipment; and a remote special purpose computer server comprising a transit plan schedule database based on pickup time and location stored in memory. The system and method calculates a location of the client device based on data accessed from a Wi-Fi access point location database, transmitted identification data, and transmitted signal strength data; and compares the calculated location to an expected location based on common carrier schedule transit plan pickup time and delivery location received from third party database sources.

Abstract: Presented are concepts for controlling cove lighting. Once such concept provides cove lighting adapted to output decorative light for illuminating the ceiling of an architectural space. The cove lighting comprises a control unit adapted to individually control each of the primary light sources in response to a lighting control signal so that the output decorative light mimics an outdoor lighting condition.

Abstract: A Bluetooth beacon for a luminaire assembly includes a module and an antenna associated with the module. The Bluetooth beacon is monted such that the antenna is communicatively visible from a light emitting side of the luminaire assembly. The Bluetooth beacon is configured to provide a signal extending a predetermined distance from the luminaire assembly such that a Bluetooth receiver on a user device can receive a signal from the Bluetooth beacon.

Abstract: A driver circuit receiving wireless communication over a wireless network is disclosed. The driver circuit includes a lighting load, a main driver, and an auxiliary driver. The lighting load is selectively illuminated based on an output voltage being provided to the lighting load that is at least a forward voltage of the lighting load. The wireless communication is indicative of whether the lighting load is to be illuminated. The main driver is for controlling current and voltage within the driver circuit such that if the wireless communication indicates the lighting load is to be illuminated, then the current delivered to the lighting load is regulated by the main driver, and if the wireless communication indicates the lighting load is not to be illuminated, then the output voltage delivered to the lighting load is controlled by the main driver is below the forward voltage.