Abstract: An example lighting device includes a plurality of individually controllable illumination light sources configured to be driven by electrical power to emit light. The lighting device further includes an optical lens positioned over the illumination light sources for beam shaping or steering. The optical lens has a plurality of aspherical, spherical, planar, or freeform surfaces, including an input surface coupled to receive light from the illumination light sources and an output surface. The input surface includes an input peripheral portion and an input central portion. The output surface includes an output lateral portion, an output shoulder portion, and an output body portion. One or both of the input surface or the output surface includes facets.

Abstract: An emergency LED lighting system maintains power to an LED lighting source based on measured voltages and currents provided to the LED lighting source; rolls back or decreases power provided to an LED lighting source over time in order to increase the amount of time the battery can power the LED lighting source; executes a soft start procedure, such that the power provided to the LED lighting source is gradually ramped up during activation of the LED lighting sources; identifies a type of battery coupled to the emergency LED lighting system; cycles the emergency LED lighting system between charging mode and standby mode to reduce power consumption over a window of time; detects AC power or an absence of AC power; and/or uses a status LED to communicate information about the emergency LED lighting system with a remote device.

Abstract: A lighting relay panel may include lower-cost features or components related to improved safety and reliability. In some cases, the relay panel includes a power supply capable of protecting the panel from high-voltage and high-current transients. A microcontroller may determine a power interruption based on a zero-cross signal received from the power supply, and may also configure latching relays during the interruption. In some implementations, the relay panel includes a relay sense circuit that is capable of receiving actuation signals from multiple relays connected to different phases of a power signal, and the microcontroller may synchronize or repeat the actuations based on a signal from the relay sense circuit. The microcontroller may generate relay addresses based on the relay positions within the relay panel. In some cases, the relay panel may include isolation circuits that are capable of providing an isolated control signal having an improved voltage range.

Abstract: A lighting device includes a light source, an image sensor, a controller, a memory, and a wireless transceiver. The light source is configured to emit light for general illumination. The image sensor is configured to acquire an image of an area illuminated by the light source. The controller is coupled to control the image sensor and to receive the acquired image of the illuminated area from the image sensor. The controller is configured to operate the wireless transceiver to receive identification information from a wireless device in the illuminated area. The controller is further configured to automatically generate a visual signature based on image information of a person or object, obtained from the image of the illuminated area. The controller also is configured to store the visual signature of the person or object in the memory in association with the wireless device identification information.

Abstract: A spectrometer-equipped lighting device detects substances in an environment around the device. A fiber detector is optically coupled to receive light from a light source. The fiber detector has a bare area from which emanates an evanescent wave of light surrounding an exterior of the fiber detector to interact with the environment in which the fiber detector is exposed. The spectrometer, optically coupled to an opposite end of the fiber detector, detects the light output and in response, generates signals representative of the spectral power distribution of the light of the evanescent wave that has interacted with the surrounding environment. A controller analyzes the spectrometer generated signals and initiates action based on the analysis of the generated signals or outputs a report indicating an environmental condition detected by the spectrometer-equipped device.

Abstract: A lighting wall controller having a capability to reject user inputs at a surface of the wall controller and/or proximity detection in accordance with sensing signals received at locations on and near the wall controller. Programming configures a processor for proximity detection to detect a presence of a conductive object within a predetermined distance to the wall controller. The processor further determines whether user inputs correspond to touches at locations on the wall controller or user gestures near the wall controller to perform one of a plurality of defined lighting functions for a lighting system. When user inputs do not correspond to defined lighting functions, a number of the non-defined inputs is counted to provide an indicator of activity on the surface of the wall controller to activate a locked mode for a duration of the non-defined inputs.

Abstract: An intelligent lighting system may be installed using pre-existing electrical wiring, such as in a construction or retrofit environment. An intelligent lighting controller and an intelligent lighting fixture may be connected via electrical wiring that is configured for transmitting AC power signals. A commissioning signal may be transmitted to the intelligent lighting fixtures via the electrical wiring. In some cases, the intelligent lighting controller modifies portions of the AC power signal to indicate the commissioning signal. The intelligent lighting fixtures may receive the commissioning signal via the electrical wiring. In some cases, each intelligent lighting fixture that is connected to the electrical wiring, such as each intelligent lighting fixture on a lighting circuit in a room, receives the commissioning signal.

Abstract: A method for performing out of band diagnostics and maintenance of lighting system elements. An out of band connection is established via a wireless out of band channel with one of the lighting system elements and the mobile device. The wireless out of band channel is separate and distinct from a wireless lighting operations channel of a wireless lighting control network connecting the lighting system elements.

Abstract: An example fighting device has a luminaire and a driver circuit. The luminaire includes a variable electrokinetic optic that includes an electrokinetic fluid between a transparent substrate and a diffuser. The electrokinetic fluid includes a carrier fluid mixed with charged particles. The variable electrokinetic optic further includes a transparent substrate electrode and a diffuser electrode configured to generate an electric field in the electrokinetic fluid in response to a control voltage applied across the transparent substrate electrode and the transparent diffuser electrode. The electric field attracts the charged particles to adjust an effective birefringence of the variable electrokinetic optic. Increasing the effective birefringence increases an output beam angle of the emitted illumination lighting relative to an input beam angle. The driver circuit selectively controls the applied control voltage.

Abstract: A light fixture that can be built upon itself to scale up or down the lumen output. More specifically, embodiments of the light fixture include an electronic housing flanked on each side with one or more light modules. The fixture can be tailored to the light needs of particular applications by adding or removing light modules from the fixture.

Abstract: A wall controller controls lighting in an area based upon a configurable user interface. The wall controller includes touch and gesture sensing electrodes mounted to a substrate, and an overlay mounted over the touch and gesture sensing electrodes. The overlay includes firmware to define lighting functions relative to a touch or motion gesture on the overlay. A processor is coupled to receive at least one of sensing signals based upon user touch inputs on the overlay, or sensing signals based upon user motion gestures near the overlay. Programming in a memory configures the processor to analyze the received sensing signals in accordance with the firmware of the overlay, generate a lighting control message based upon the analyzed sensing signals, and transmit the lighting control message to one or more luminaires in an area of the wall controller to control an output of the one or more luminaires.

Abstract: A retention assembly includes a body that is configured to couple with the light fixture housing through a hinge. The body forms an internal axle. The retention assembly also includes a spring. A proximal end of the spring coils about the internal axle. A distal end of the spring extends from the body, and is configured to couple with a coupling feature of the light fixture housing. When the body couples with the hinge and the distal end of the spring couples with the coupling feature of the light fixture housing, a tension within the spring exerts a torque on the body, so as to urge the body to rotate about the hinge, toward the coupling feature.

Abstract: A lighting system utilizes intelligent system elements, such as lighting devices, user interfaces for lighting control or the like and possibly sensors. The system also has a data communication network. Some number of the intelligent lighting system elements, including at least two of the lighting devices, also support wireless communication with other non-lighting-system devices at the premises. Each such element has a communication interface system configured to provide a relatively short range, low power wireless data communication link for use by other non-lighting-system devices at the premises in proximity to the respective intelligent system element. Also, in such an element, the processor is configured to control communications via the communication interface system so as to provide access to the data network and through the data network to the wide area network outside the premises for non-lighting related communications of the other non-lighting-system devices.

Abstract: A distributed lighting control system has a plurality of independently controlled light fixtures. Each light fixture of the plurality of independently controlled light fixtures includes: an illuminating element; driver circuitry operatively coupled to the illuminating element and configured to provide power to the illuminating element; one or more sensors; and a processor operatively coupled to the one or more sensors and the driver circuitry. The processor is configured to: receive signals from the one or more sensors; and control the driver circuitry to provide power to the illuminating element to generate illumination based on the received signals from the one or more sensors. Illumination provided by each light fixture of the plurality of independently controlled light fixtures is controlled independently of the illumination provided by others of the plurality of independently controlled light fixtures.

Abstract: A lighting fixture may provide a proximal lighting effect and a distal lighting effect. In some cases, the lighting fixture may include a multi-channel driver and multiple groups of LEDs. Based on an adjustable input level, the driver may provide current to subgroups of the LEDs, arranged at various areas of the lighting fixture. Responsive to the level of the input, the driver may provide current to various LED subgroups at the various areas, such that a particular proximal effect is provided at a particular area of the lighting fixture based on the particular value of the input level. In addition, the distal lighting effect may have a stable value across the adjustments to the input level, and the corresponding adjustments to the proximal effects. The distal effect may be perceivable at a location remote from the lighting fixture, such as a work surface.

Abstract: The disclosure provides an example of a system and a method for command execution synchronization in a nodal network. In one example, the method includes starting at a first time, propagating a message including an instruction and timestamp, in a nodal network including a plurality of wireless communication nodes (nodes). The timestamp identifies a second time later than the first time by an amount of time equal to or greater than a period of delay expected for propagation of the message through the nodal network to all of the nodes. The method also includes running a software (soft) clock in each of the nodes, the soft clocks being synchronized to within a timing error tolerance value of the soft clocks in other of the nodes and executing, by each respective one of the nodes, the instruction when the soft clock of the respective nodes reaches the second time identified by the timestamp.

Abstract: A luminaire includes a housing assembly, a spacer, and a globe optic. A collar may be included on the spacer such that the luminaire can accommodate different sizes of globe optics without requiring complete replacement of the luminaire. The spacer may include airflow apertures that promote air circulation within the luminaire when the luminaire is assembled. A wireless node may be included with the luminaire. In some examples, the wireless node may be positioned on at least one of the housing assembly, the spacer, or the globe optic.

Abstract: An exemplary lighting system utilizes intelligent system elements, such as lighting devices, user interfaces for lighting control or the like and possibly sensors, and utilizes network communication amongst such intelligent system elements. Some processing functions performed within the system are implemented on a distributed processing basis, by two or more of the intelligent elements of the lighting system. Distributed processing, for example, may enable use of available processor and/or memory resources of a number of intelligent system elements to process a particular job. Another distributed processing approach might entail programming to configure two or more of the intelligent system elements to implement multiple instances of a server functionality with respect to client functionalities implemented on intelligent system elements.

Abstract: A system and method may be used to control a plurality of services for one or more facilities. A data store may receive first and second meter readings indicative of provision of services to the one or more facilities. A processor may automatically process the first and second meter readings to provide a plurality of insights, each of which provides information regarding operation of the one or more facilities. A display screen may display at least some of the plurality of insights by displaying, in connection with each of the insights, a plurality of options for acting on the insight to improve operation of the one or more facilities.

Abstract: An example luminaire includes a laser light source, a photoluminescent material and a holographic optical element. The holographic optical element has a hologram optically coupled to the laser light source and to the photoluminescent material. The hologram is configured to distribute light received from the laser light source as a pattern of light to the photoluminescent material.