Abstract: A solid state driver to adapt current ripple characteristics therein, at least partially based on operating characteristics of a solid state lighting device operated by the driver, is provided. The driver senses operating voltage, operating current, or a combination of operating voltage and operating current of a solid state lighting device. The driver stores pre-determined current ripple percentage settings in a data structure, for example, in a controller circuit. The driver selects and implements one of the pre-determined current ripple percentage settings based on one or more of the sensed operating characteristics of the solid state lighting device, to improve efficiency, to reduce the operating frequency, and/or to lower the operating temperature of one or more components of the driver.

Abstract: An automatic driver-dimming-mode detection protocol includes subjecting, via a dimming bus, a luminaire driver to a first driver control signal of test analog voltages. Forcing the luminaire driver, via the first driver control signal, into a power output response that includes: (a) a constant output power mode, or (b) at least two discernable different output power levels. Detecting a dimming mode of the luminaire driver. The step of detecting the dimming mode of the luminaire driver includes: measuring, via a power metering circuit, a power metering measurement corresponding to the power output response; and based on the power metering measurement of the luminaire driver being: (a) the constant output power mode, determining that the luminaire driver is a digital dimming mode type (e.g., DALI), or (b) the at least two discernable different output power levels, determining that the luminaire driver is an analog dimming mode type (e.g., 0-10V).

Abstract: A luminaire includes a housing that defines a light output aperture, a backlight apparatus that emits light toward the light output aperture, and an optical sheet of light transmissive material. The optical sheet is adjacent the backlight apparatus and modifies the light before it leaves the light output aperture. The optical sheet forms a first surface and an opposite second surface. At least one of the first surface or the second surface of the optical sheet includes a first spatial region that includes elliptical diffusers oriented predominantly in a first direction, a second spatial region that includes elliptical diffusers oriented predominantly in a second direction that is different from the first direction, and a third spatial region that includes at least one type of optical microstructure selected from the group consisting of Fresnel lenses, v-groove lenses, v-cut lenses, pyramidal lenses, lenticular lenses, donut lenses and conical diffusers.

Abstract: An housing for use with a light fixture is described with a housing body and a mounting hook. The housing body can have an upper surface and a hook mounting hub exposed on the upper surface. The mounting hook can be rotatably coupled to the hook mounting hub and adapted to rotate between a stowed position where the hook lies substantially flush or proximate with the upper surface of the housing body and an upraised position where the hook extends upwardly from the upper surface of the housing body.

Abstract: An example radio frequency (RF) communication system includes a gateway server and a plurality of RF nodes. The plurality of RF nodes includes hub RF nodes and member RF nodes. Member RF nodes include a member RF node memory coupled to a member RF node processor, along with member programming in the member RF node memory, which includes functions. The functions configure the member RF nodes to connect to a nodal wireless network via a respective hub RF node. Hub RF nodes include a hub RF node memory coupled to a hub RF node processor, along with hub programming in the hub RF node memory, which includes functions. The functions configure the hub RF nodes to send to a member RF node via the nodal wireless network, an administrative request message. The functions further configure the hub RF nodes to receive from a member RF node an administrative response message.

Abstract: A luminaire includes a housing that defines a light output aperture, a backlight apparatus that emits light toward the light output aperture, and an optical sheet of light transmissive material. The optical sheet is adjacent the backlight apparatus and modifies the light before it leaves the light output aperture. The optical sheet forms a first surface and an opposite second surface. At least one of the first surface or the second surface of the optical sheet includes a first spatial region that includes elliptical diffusers oriented predominantly in a first direction, a second spatial region that includes elliptical diffusers oriented predominantly in a second direction that is different from the first direction, and a third spatial region that includes at least one type of optical microstructure selected from the group consisting of Fresnel lenses, v-groove lenses, v-cut lenses, pyramidal lenses, lenticular lenses, donut lenses and conical diffusers.

Abstract: A light fixture includes a visible light module and a germicidal light module. The visible light module may include one or more visible light engines designed for emitting visible light for general illumination. The visible light module may define a top side, a bottom side opposite the top side, and an outer perimeter around the top side and the bottom side. The visible light module may define an aperture extending through the visible light module from the top side to the bottom side. The visible light module may be designed to emit the visible light out of and across the bottom side from the outer perimeter to an inner perimeter defined by the aperture. The germicidal light module may be coupled to the visible light module. The germicidal light module includes a germicidal light engine designed to emit germicidal light through the aperture effective in deactivating pathogens.

Abstract: A system for providing power from an AC power supply to an external load. The system includes a current limiter circuit, connected to an input of a switched-mode power supply. The system includes the switched-mode power supply that provides a first voltage signal and a second voltage signal. The system includes a supervisor circuit that is connected to the first output of the switched-mode power supply and coupled to a relay control circuit. The supervisor circuit monitors the first voltage signal and enables the relay control circuit. The relay control circuit provides a first voltage corresponding to the first voltage signal to a first voltage rail and provides a second voltage corresponding to the second voltage signal to a second voltage rail. A relay powered by a connection to the first voltage rail or the second voltage rail connects the AC power supply to an external load.

Abstract: System level occupancy counting in a lighting system configured to obtain an indicator data of a RF spectrum signal (signal) generated at a number of times in an area. At each respective one of the number of times, based on results of application of heuristic algorithm coefficients, the lighting system generates an indicator data metric value for each of the indicator data for the respective time. The lighting system processes each of the indicator data metric value to compute a plurality of metric values for the respective time and combine the plurality of metric values to compute an output metric value for each of a plurality of probable number of occupants in the area for the respective time. The lighting system determines an occupancy count in the area at the respective time based on the computed output metric value.

Abstract: A light fixture controller is configured for controlling the color temperature and intensity of a light fixture that includes at least two LED groups. Each LED group includes multiple LEDs configured to produce light at certain color temperatures. The light fixture controller receives a color temperature setting and an intensity setting for the light fixture and generates control signals based on these settings. A first control signal only turns on the first LED group for a first duration of a cycle and a second control signal only turns on the second LED group for a second duration of the cycle. The ratio between the first and second duration is determined based on the color temperature setting. The control signal further includes a dimming control signal for controlling a current flowing through the LED groups based on the intensity setting for the light fixture.

Abstract: A reversible mounting arm that is universal in that it can be used to mount a light fixture to either a flat or curved mounting surface, such as, but not limited to, a round or rectilinear-shaped pole. More specifically, one end of the mounting arm is designed for mating with a round pole having a curved sidewall (or other curved mounting surfaces) whereas the opposing end of the mounting arm is designed for mating with poles having a flat sidewall (or other flat mounting surfaces).

Abstract: A mobile device logs in to an authorization server, via a mobile device network communication interface, over a secondary network. The mobile device receives, via an image sensor, over a light communication band, a respective verification code. In response to logging in to the authorization server and receiving the respective verification code, the mobile device transmits, via the mobile device network communication interface over the secondary network, the respective verification code to the authorization server. In response to transmitting the respective verification code to the authorization server, the mobile device obtains, via the mobile device network communication interface over the secondary network, an authentication approval to control a plurality of RF nodes over a local wireless communication network.

Abstract: A rotatable connection for securing a light module to a supporting structure is described herein. The light module directs light towards an illumination area. The light module is directable by rotating the light module using the rotatable connection. The rotatable connection includes an upper connector and a base. The upper connector and the base may secure together with a tool-less connection. the upper connector couples to the light module through a rotatable connection that enables rotation of the light module without use of tools and also resists rotation of the light module after the light module has been installed at a particular angle.

Abstract: A network has wireless enabled nodes of more than one hardware type. A computing device obtains a software update for one of the node types and sends an announcement of availability through the network. The announcement includes a node type identifier. A node that recognizes the identifier as matching its own hardware type collects the software update through a series of one or more requested packet transfers from the controller. Each packet carrying part of the update also includes the node type identifier. A node of a different type that has received the packets may serve as a source of missing packets to other nodes. Alternatively, nodes needing missing packets can fetch them from the computing device. When the software update is completely received by a node of the identified type, that node reboots and executes the updated software. Any node of another type discards the packets.

Abstract: A light fixture includes a housing defining a channel and an insert lighting module. The insert lighting module includes an insert housing, a visible light engine coupled to a bottom portion of the insert housing for emitting visible light for general illumination, and an auxiliary light module coupled to the insert housing and including an auxiliary light engine for emitting germicidal light effective in deactivating pathogens. A top portion of the insert lighting module may be positioned within the channel and the insert lighting module may be coupled to the housing. The auxiliary light module may be uncoupled and removed from the insert housing by performing the steps of: uncoupling the insert lighting module from the housing and removing the insert lighting module from the channel, and uncoupling the auxiliary light module from the insert housing and removing the auxiliary module from the top portion of the insert housing.

Abstract: A software tool automatically generates a components list (also known as a “solution”, “recipe”, or “bill of materials”) to be used in completing an installation. This components list may include, for example, fixtures and control devices for use in implementing lighting solutions for a building. The system takes as input a sequence of operations table, and identifies components to satisfy the requirements specified in the sequence of operations table. A number of different solutions may be presented, offering different configurations, cost levels, product lines, and/or the like; the different solutions may also indicate different degrees to which controls are embedded in fixtures. The user can then select among the presented solutions, and/or can perform other operations to change the configuration and/or parameters so as to generate new options.

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: Battery charge function may be in an LED driver which eliminates the duplication of line interface circuitry. A single line interface circuit provides the input power conversion for both the battery charge function and normal operation of the LED driver. During a loss of power, the LEDs may be controlled using power from the battery backup module.