Abstract: A light fixture suitable for illuminating a remote surface. The fixture includes a post adapted to receive at least two substantially identical light engine modules. Each module includes a plurality of light emitting diodes. Each module includes an edge adapted for mounting to the post.

Abstract: There are provided methods and devices for programming a luminaire. For example, there is provided a programming module for use with a luminaire. The programming module includes a connector configured to provide an interface between the programming module and the luminaire via a photo-electric element (PE) socket of the luminaire. The programming module further includes a memory and a processor. When executing instructions included in the memory, the processor is configured to perform operations that include measuring the input power to the luminaire and changing a driver current set point.

Abstract: Provided is an LED retrofit lamp interfacing with a high intensity discharge (HID) ballast that includes a lighting source having a plurality of light emitting diodes (LEDs), one or more heat sink components dissipating heat generated by the LEDs, and an LED driver configured to operate the LEDs. The LED retrofit lamp is disposed within an HID housing and the HID ballast is electrically connected with the LED driver, and supplies power to the LED driver for operating the LEDs.

Abstract: An LED light fixture includes a housing, a controller circuit having direct current (DC) and alternating-current (AC) power inputs, a direct-current (DC) power supply unit (PSU) connected to the controller circuit, an alternating-current (AC) PSU connected to the controller circuit, and at least two groups of light emitting diodes (LEDs) operable to emit light, wherein each group includes at least one LED of a first type and at least one LED of a second type. In some embodiments, when the LED light fixture operates in a security mode the controller prevents power from flowing to the AC PSU and allows power to flow to the DC PSU to power only the first type of LEDs of the at least two groups of LEDs to emit a security light.

Abstract: A troffer luminaire that includes a plurality of solid state lighting devices, and a first lens and a second lens having total internal reflection (TIR) to collect light from the lighting devices and produce a light output with good luminance uniformity; and to control the distribution profile of the light output through the first lens and the second lens as desired for particular lighting applications.

Abstract: Systems and methods for monitoring and tracking usage of a lamp and, in one example, assigning a monetary value that can be billed to an end user are provided. Examples of the lamps can communicate wirelessly in order to receive and to transmit information related to initialization, authorization, electrical power consumption monitoring, and combinations thereof. In one embodiment, the lamp transmits data a usage parameter to a service provider via a network. The service provider can aggregate the data and, in one example, assign a usage fee that describes a monetary value based on the usage parameter and generate an output that includes that usage fee.

Abstract: Provided is a device including a base configured for attachment to a lighting fixture. The device also includes an engagement mechanism having first and second portions configured for mounting the lighting fixture within a recess of a substantially flat member having first and second ends. The engagement mechanism facilitates movement of the lighting fixture within the recess from the first end towards the second end, the movement (i) being responsive to an applied force and (ii) occurring in only a single direction. The first portion engages a first surface of the member and the second portion engages a second surface of the member when the lighting fixture reaches the second end.

Abstract: A lighting device with a drive device for dimming light-emitting diodes. The drive device comprises a dimming component that operates a switch in response to both a change in an input power signal and a system temperature. In one example, the dimming device can include a waveform generator that generates a signal with a waveform having levels that change in response to changes in temperature. The waveform defines the time during which the switch is open and closed, thereby determining the period of time the LEDs are energized. By operating the LEDs in this manner, the drive device effectively dims the LEDs to reduce the operating temperature and cool the LEDs.

Abstract: A system and method according to various embodiments combines three separate technologies to form a unique lighting system with enhanced antimicrobial properties and air cleaning capabilities. The combination of the three technologies also produces a lighting system that extends the required maintenance period for lighting fixtures. The first technology is based on anatase type TiO2. The second and third technologies are based on the use of micro-sized surface structures to generate light scattering effects and, at the same time, reduce bacterial colonization and inhibit bacterial migration even during the absence of light or in dark environments.

Abstract: An LED driver circuit includes a primary circuit and a circuit electrically isolated from the primary circuit, a transformer having a primary winding configured to receive power from an alternating current source and to generate power in a first secondary winding configured to provide power to the electrically isolated circuit, and to generate power in a second secondary winding configured to provide power to the primary circuit, and a conductor connected to an end of the first secondary winding and configured to connect a winding driver signal to the first secondary winding to generate power in the second secondary winding.

Abstract: A traffic lamp and a method of controlling the traffic lamp based on a power signal are provided. The traffic lamp can include a controller and a light emitting element When a plurality of light emitting elements is included in the traffic lamp, each light emitting element is coupled with a separate controller. Each controller can be configured to include a predetermined light emitting timing sequence for the corresponding light emitting element. When the power signal is supplied to the traffic lamp, each controller determines a power signal characteristic such as a frequency or a period of the power signal and controls a light output of the light emitting element: based on the power signal characteristic and the light emitting timing sequence. A plurality of light emitting elements can be synchronized using the power signal applied to the traffic lamp.

Abstract: A method for data compression includes reading first data representing sensor data capture, compressing the data with a lossless algorithm, transmitting the compressed data as a reference frame, reading subsequent data, calculating a delta between the first data and the subsequent data, compressing the data delta, and determining if the compression ratio of the compressed data delta is within a predetermined tolerance threshold. If the compression ratio is within the threshold, transmitting the compressed data delta frame, and repeating the calculating, compressing, and determining steps for subsequent data; Else if the compression ratio is not within the threshold, compressing the current subsequent data and transmitting the result as an updated reference frame. Then repeating the calculating, compressing, and determining steps for subsequent data. A system and a non-transitory computer-readable medium for implementing the method are also disclosed.