Abstract: Methods of calibrating a lighting panel including a plurality of segments, each of said segments configured to emit a first color light and a second color light in response to pulse width modulation control signals having respective duty cycles include determining an average segment luminance for the lighting panel, determining a luminance variation of each segment to the average segment luminance, comparing the luminance variation of each segment to a threshold, and adjusting the duty cycle of at least one color of at least one segment to reduce the luminance variation in response to the luminance variation of a segment exceeding the threshold. Calibration systems are also disclosed.

Abstract: An LED lamp includes a housing comprising a receptacle, first and second bossed holes in the receptacle, each bossed hole having internal threads, and a cover plate including parallel ribs projecting outward, and holes, the cover plate being secured to the receptacle by driving threaded fasteners therethrough into the second bossed holes; two opposite shoulders each formed lengthwise along a central line of an inner surface of either side of the receptacle; a PCB supported by the shoulder and the first bossed holes, the PCB being fastened in the receptacle by driving threaded fasteners therethrough into the first bossed holes; rows of units of LEDs electrically connected to the PCB wherein each row of units of LEDs is parallel to and adjacent the rib; and a waterproofing member in the housing for protecting the PCB. The LED lamp is shallow.

Abstract: An LED light unit is provided with terminal pins at each end for fitting the light unit in place of a fluorescent tube of a fluorescent lighting fixture connected to a power source. The light unit has a circuit board with a plurality of diodes configured to provide at least one string of visible light producing LEDs and at least one string of zener diodes. The strings are driven by drive means whereby a constant input operating voltage to the light unit is provided when the light unit is used with a ballast and the power derived is dissipated in any one or more of the strings.

Abstract: A lighting apparatus for retrofitting an existing luminaire includes a plurality of light emitting diodes (LED) of similar or differing wavelengths arranged and configured in at least one light bar array, a heat sink module thermally coupled to the at least one light bar array, an electronic power module electrically coupled to the at least one light bar array, and a plate coupled to the at least one light bar array, electronic power module and the heat sink module, the plate arranged and configured for coupling to the luminaire to provide quick and easy installation and replacement of the at least one light bar array, heat sink module and electronic power module into and from the luminaire.

Abstract: The present invention relates to an undercabinet lighting system including a low profile switch mode power supply contained in a special electrical junction box and use Light Emitting Diodes with long life. The system is powered by a high energy efficient switch mode power supply with low power consumption. The height if this lighting system is very close to half of one inch or less. The transparent diffuser is positioned over the Light Emitting Diodes for uniform illumination over a desired area. These luminaries can be ganged or linked by direct mating connectors.

Abstract: An ultraviolet (UV) light-emitting diode (LED) device for curing fluids such as inks, coatings, and adhesives, for example. In one embodiment, LEDs are positioned on faces defined by an inverted recess in a base portion. The LEDs are configured such that the light beams emitted from the LEDs converge at a single area or point to provide a single, focused area or point of amplified power from the LEDs. An optical culmination device may be used to further intensify the power output from the LEDs. The optical culmination device provides enhanced power output from the UV LED device which makes the curing process more efficient than previous curing systems.

Abstract: An apparatus adapted for eliminating a ghost image of point light sources is disclosed. The apparatus includes a plurality of point light sources adjacently arranged, and a plurality of medium elements provided corresponding to the point light sources. Each of the point light sources is adapted for emitting a light. Each of the medium elements includes a light input surface, and a light output surface, and both of the light input surface and the output surface are arcuate surfaces adapted for diffusing the light emitted from the point light source. The point light source emits the light, and the light is inputted from the light input surface of the medium element and outputted from the light output surface of the medium element, thus configuring a uniformly distributed light without producing a ghost image. Further, a fluorescent material may be mixed in the medium element for obtaining a color combined light.

Abstract: An LED assembly adapted to mount in a bayonet type socket of the type having a slotted casing comprising the negative terminal and a central pin comprising the positive terminal in which a plurality of LED's are mounted on a circuit board and the LED assembly has an electrically conductive screw comprising the positive connection for engaging the central pin of the socket and an electrically conductive tube with a pin member extending outwardly therefrom for insertion in the slots of the casing of the socket for comprising the negative connection.

Abstract: A light output device comprises a substrate arrangement comprising a plurality of light source circuits integrated into the structure of the substrate arrangement. Each light source circuit comprises a light source device arrangement (4) having two terminals and a transistor circuit (7). Each light source circuit is supplied with power from an associated pair the power connections (10,11,14,15,20), and at least two light source circuits (4,7) share the same pair of power connections. A set of control connections (18) are provided for receiving external control signals for controlling the transistor circuits (7). A set of non-overlapping electrodes (10,11,14,15,18,20) provide the internal connections between the power connections, the light source device terminals and the transistor circuits, and each light source device is individually independently controllable.

Abstract: Lighting devices include multiple heatsink elements arranged to dissipate heat generated by the multiple solid state emitters, with non-rigid coupling between heatsink elements. At least a portion of each heatsink element is preferably exposed to an ambient environment. Each heatsink element may include a switching element, may be addressable, and may receive wired or wireless control signals. A modular solid state lighting unit includes a heatsink and at least one solid state light emitter, with at least one flexible element secured to the heatsink element and to multiple electrical couplings. Flexible rope lights and two-dimensional arrays of emitters are provided.

Abstract: A light source module has a reflector having a light reflection face and a plurality of light emitting elements. The light reflection face is curved in a circular arc shape in a width direction of the reflector and extends in a longitudinal direction of the reflector. The light emitting elements are arranged in a center portion in the width direction of the light reflection face and are arranged linearly along the longitudinal direction of the reflector.

Abstract: An illumination device is provided in the present disclosure. The illumination device may include a substrate having a first surface, at least one light-aggregation component having a free-form curved surface and located on the first surface, at least one light source at least partially surrounded by the light-aggregation component, and a light-mix component positioned adjacent to the first surface and the at least one light-aggregation component thereof.

Abstract: A lighting fixture system, comprising a first illuminant, a secondary illuminant; and a sensor configured to detect a predetermined condition, the sensor being coupled to the first illuminant and the secondary illuminant, the first illuminant and the secondary illuminant comprising different light sources, the sensor configured to cause modulation of the first illuminant and the secondary illuminant in response to detection of the pre-determined condition.

Abstract: An LED package containing integrated circuitry for matching a power source voltage to the LED operating voltage, LEDs containing such integrated circuitry, systems containing such packages, and methods for matching the source and operating voltages are described. The integrated circuitry typically contains a power converter and a constant current circuit. The LED package may also contain other active or passive components such as pin-outs for integrated or external components, a transformer and rectifier, or a rectifier circuit. External components can include control systems for regulating the LED current level or the properties of light emitted by the LED. Integrating the power supply and current control components into the LED can provide for fabrication of relatively small LEDs using fewer and less device-specific components.

Abstract: An illumination device including a plurality of illumination areas, each of which is individually controllable, includes a plurality of light-emitting devices disposed in a matrix pattern in each of the illumination areas where emission colors are disposed in a different manner between adjacent rows and between adjacent columns. Consequently, the emission of uneven luminance or uneven color is prevented from occurring in boundary portions of each of the illumination areas.

Abstract: An illumination device for plants includes a lighting unit mounted on a lamp seat and including a cold cathode fluorescent lamp and a light emitting diode (LED) unit. A driving unit is mounted to the lamp seat, is coupled to the cold cathode fluorescent lamp and the LED unit, and is operable so as to drive the cold cathode fluorescent lamp and the LED unit such that the cold cathode fluorescent lamp and the LED emit respectively color lights having respective wavelengths. A dimming unit is coupled to the driving unit, and is operable so as to output a dimming output to the driving unit. The driving unit drives the cold cathode fluorescent lamp and the LED unit based on the dimming output from the dimming unit so that the color light emitted by each of the cold cathode fluorescent lamp and the LED unit has a respective light intensity.

Abstract: The present invention relates to the technical field of LED street lamp, in particular to structure of a reflector panel of the LED lamp. A reflector panel comprises a base, the base has multiple reflector cups, which are divided into two groups according to the direction of their openings, all reflector cups in each group have the same direction of their openings, the directions of the openings of the reflector cups in two different groups are opposite. The reflector panel of the present invention can form the illumination band with even illuminance on the street and cause small light loss.

Abstract: LED lighting systems operate their LED above a junction temperature of 85° C. and space apart from the LED, components of the LED lighting system that reduce an expected lifetime of the LED lighting system to less than 25,000 hours as a result of operating the LED above the junction temperature of 85° C. Accordingly, the LED itself may be driven hotter than is conventionally the case, without impacting its lifetime. By allowing the LED to operate hotter, reduced heat sinking may be needed for the LED itself, which can decrease the cost, size and/or complexity of the thermal management system for the LED lighting system and/or can allow a thermal budget for the LED lighting system to be used elsewhere. Related structures are also described.

Abstract: A lighting device (1; 21; 41) having at least one heat sink (5; 44) for cooling at least one light source, wherein the at least one heat sink (5; 44) comprises one or more at least bent sheet metal parts.

Abstract: A LED lamp device includes a power unit serially linking a plurality of LED lamp sets by a power cord. The power unit has a regulating circuit, power switch, and an indicator. Each LED lamp set includes a metal heat sink which can be fixed to a specific position by bolts, clamping, gluing, or other method. The metal heat sink has at least one and five most LEDs. The LEDs can be arranged to a metal circuit board, print circuit board, or directly mounted on surface of the metal heat sink. A lens having a receiving space is arranged above the plurality of LEDs.

Abstract: The present invention refers to a lighting system comprising ambient light sources and task light sources, and occupancy sensors for detecting occupancy in a number of occupancy zones and for controlling the ambient light sources and task light sources. Each occupancy sensor is provided to communicate wirelessly with other occupancy sensors. On the detection of occupancy of at least one zone, the occupancy sensors detecting the occupancy active at least one ambient light source and send a control signal to other occupancy sensors to active other ambient light sources, and the intensity of a group of task light sources illuminating the occupied zone is set to a level higher than the intensity of the remaining task light sources. The invention also refers to a respective method for controlling a lighting system of this kind.

Abstract: System for providing a directional LED array. In an aspect, a directional LED array is provided that includes a plurality of LEDs and a plurality of cups coupled to the plurality of LEDs and configured to direct light emitted from the plurality of LEDs into a resulting array beam pattern, wherein each cup directs light from one or more LEDs to form the resulting array beam pattern. In another aspect, a lighting device is provided that includes a lighting fixture and a cup array coupled to the lighting fixture. The cup array includes a plurality of LEDs and a plurality of cups coupled to the plurality of LEDs and configured to direct light emitted from the plurality of LEDs into a resulting array beam pattern, wherein each cup directs light from one or more LEDs to form the resulting array beam pattern.

Abstract: A light applicator for a peritoneal dialysis conduit connection includes a housing having a inner surface; a plurality of ultraviolet (“UV”) light-emitting diodes (“LED's”) positioned on the inner surface of the housing; and circuitry connected to the UV-LED's such that power can be supplied to energize the UV-LED's simultaneously.

Abstract: Provided is a backlight unit (49) which includes a plurality of LEDs (11). The LEDs (11) are two-dimensionally disposed, thereby having the collection of light emitted from the LEDs (11) in a state of planar light. Furthermore, the backlight unit (49) has the planar light divided into a plurality of sections, and includes a luminance variable system (for instance, a system having disposition which a difference in the density of LEDs (11)), which can change luminance, corresponding to each section.

Abstract: A high-intensity light source is formed by a micro array of a semiconductor light source such as a LEDs, laser diodes, or VCSEL placed densely on a liquid or gas cooled thermally conductive substrate. The semiconductor devices are typically attached by a joining process to electrically conductive patterns on the substrate, and driven by a microprocessor controlled power supply. An optic element is placed over the micro array to achieve improved directionality, intensity, and/or spectral purity of the output beam. The light module may be used for such processes as, for example, fluorescence, inspection and measurement, photopolymerzation, ionization, sterilization, debris removal, and other photochemical processes.

Abstract: An apparatus for providing a multicolored illuminator is disclosed. In one embodiment, the apparatus comprises a first sheet comprising a plurality of columnar illuminators stacked side by side, and a plurality of colored light sources placed along an edge of the first sheet. The plurality of columnar illuminators diffuse light generated by the plurality of colored light sources. The light emanates in a predetermined pattern.

Abstract: A light source for injecting excess carriers into a semiconductor wafer, fully illuminating a surface of the wafer. According to the disclosed embodiments, the source includes at least one set of point sources which are spaced apart at regular intervals along the X and Y axes, such that the source emits a monochromatic beam of a size that is at least equal to that of the semiconductor wafer surface to be illuminated. Each of the point sources is sinusoidally modulated by a common electrical modulator, the distance between two point sources and the distance between the source and the semiconductor wafer surface to be illuminated being selected such that the monochromatic light beam uniformly illuminates the surface.

Abstract: A multipurpose lighting device comprises a module including a first light source for a flashlight function and a second light source for a lantern or omnidirectional glow stick function. A button on the module is operative to selectively alternating between the first and second light sources. An elongate housing is coupled to the second light source so that the second light source illuminates along the length of the housing. Finally, a whistle portion is formed on one end of the elongate housing so that the multipurpose device includes flashlight, glow stick, and whistle functions.

Abstract: Light emitting devices and methods such as light emitting diodes (LEDs) are disclosed for use in higher voltage applications. Variable arrangements of LEDs are disclosed herein. Arrangements can include one or more LED chips connected in series, parallel, and/or a combination thereof. LED chips can be disposed in a package body having at least one thermal element and one or more electrical components.

Abstract: A line voltage LED Lamp produces variable illumination in response to industry standard lighting dimmers, through the use of an input voltage monitoring circuit which variably controls the current output of an integral driver in response to sensed changes in the input voltage. A cascaded converter circuit is used to achieve a very high step-down ratio, enabling the LEDs to be driven from a high input voltage without the need for a power transformer. Electrolytic capacitors are avoided, increasing the life of the driver circuit in the high ambient temperatures typically encountered in the base of similar lamps. The circuit employed drives high power LEDs, and the lamp is adapted to fit common MR16 size fixtures. Illumination output equivalent to similar size halogen bulbs is achieved.

Abstract: A light-emitting chip includes: a substrate; plural light-emitting elements arrayed in line on the substrate, each of the light-emitting elements including a light-emitting region having a length in an array direction of the array different from a length in a direction orthogonal to the array direction; and a light-up current supplying interconnection including plural connecting portions, each of the connecting portions being provided on the light-emitting region of a corresponding one of the light-emitting elements in a shorter direction of the light-emitting region either the array direction or the direction orthogonal to the array direction, each of the connecting portions being connected to an electrode provided on the light-emitting region, the light-up current supplying interconnection supplying a current for lighting up to the plural light-emitting elements through the plural connecting portions.

Abstract: A headlight includes a plurality of luminescence diode emitters. At least one first group of the luminescence diode emitters is arranged in a matrix having at least two columns and at least two rows, wherein in the first group the electrical connections of a first connection type of the luminescence diode emitters of a column and the electrical connections of a second connection type of the luminescence diode emitters of a row are in each case electrically connected to one another. The electrical connections of the first connection type of different columns and the electrical connections of the second connection type of different rows of the matrix are electrically insulated from one another.

Abstract: A light fixture (200) comprises a mounting fixture (501) that is configured and arranged to facilitate mounting the light fixture to a mounting surface other than ground along with at least a first light socket (502) and a plurality of permanently mounted light emitting diodes (LED's) (503). The light socket and the LED's are supported by the mounting fixture. The LED's are configured in an array and are oriented towards the mounting surface when the light fixture is installed on the mounting surface. This light fixture can further comprise an ambient light sensor (504), an animate object detector (505), and/or a timer (506). The wall-washing LED's can be switched on and off automatically (103) to provide the desired decorative effect during the evening hours. In addition, the light socket can be rendered controllable (105) as a function of whether it is dark out and whether an animate object has been detected.

Abstract: In controlling an ambient lighting element, a category of data being rendered by a host is identified, ambient lighting data associated with the identified category is retrieved, and the retrieved ambient lighting data is rendered in correspondence with the rendered data. The retrieved ambient lighting data may be an ambient light script arranged to determine temporal portions of ambient lighting data. The ambient lighting data may be associated with the category based on user input. A sub-category of the data may be identified and the retrieved ambient lighting data may be modified with additional ambient lighting data associated with the sub-category. An association of a category with ambient lighting data may be edited by a user. A default association of a category to ambient lighting data may be provided.

Abstract: A circuit is provided for actuating a lighting device in a motor vehicle. The circuit includes first and second light sources, that may include one or more light-emitting diodes. The light sources are connected in parallel, and each have a respective heat sink. Measuring means is configured to determine the functionality of the first and second light sources.

Abstract: A lighting module includes a plurality of lighting units arranged in a matrix. Positive electrodes of all the lighting units in the first column are connected to form a positive electrode of the lighting module, and negative electrodes of all the lighting units in the last column are connected to form a negative electrode of the lighting module. In any column of the lighting module, negative electrodes of all the lighting units in the odd rows are connected to positive electrodes of all the lighting units in even rows of next column, and negative electrodes of all the lighting units in the even rows are connected to positive electrodes of all the lighting units in odd rows of the next column.

Abstract: A single chip multi-voltage or multi-brightness LED lighting device having at least two LED circuits having at least two LEDs connected se?es, and electrically unconnected in a parallel relationship, a forward operating d?ve voltage of at least six volts and are monolithically integrated on a single substrate, configurable by means of connecting the circuits so as to provide optional operating voltage level and/or desired brightness level wherein the electrical connection at the LED packaging level when the single chips are integrated into the LED package Alternatively, the LED package may have external electrical contacts that match the integrated chips within Optionally allowable, the drive voltage level and/or the brightness level select-ability may be passed on through to the exterior of the LED package and may be selected by the LED package user, the PCB assembly facility, or the end product manufacturer.

Abstract: A lighting system adapted for being retrofit into a conventional lighting fixture, or adapted to replace the conventional fixture. The lighting system includes a lighting device having a substrate and a plurality of light-emitting elements disposed on the substrate. The lighting system further includes a power supply for delivering D/C current to the lighting device. The lighting device may be installed into a conventional lighting socket in the conventional lighting fixture or mounted independently utilizing some parts of the conventional fixture. The power supply is installed into the conventional lighting fixture or other suitable fixture external to the lighting device. In exemplary embodiments, the lighting system includes a plurality of lighting devices rotatably mounted in the conventional lighting fixture. Each lighting device is powered by an independent power supply and may be independently rotated and powered to customize light coverage.

Abstract: An operating lamp includes a plurality of illumination elements arranged in discrete groups. The illumination elements include at least one white illumination element, adapted to emit a white light, and multiple colored illumination elements, each adapted to emit a non-white, colored light. The operating lamp also includes a controller in communication with the illumination elements, and one or more storage devices configured to communicate with the controller. Each of the storage devices is associated with one or more of the groups of illumination elements, and each of the storage devices contains a set of power values for each associated group. The controller is configured to control illumination of each group of illumination elements individually, based on the associated power values.

Abstract: Methods and apparatus are provided to fabricate massive monolithic arrays of individually addressable light emitting diodes, assemble a plurality of such massive monolithic arrays of individually addressable light emitting diodes, control each individual light emitting diode, and to assemble the same in manner to achieve the accuracy and stability for a massive number of individually controlled light emitting diodes that can then be focused using projection optics on to a photoreceptive surface. In addition methods and apparatus are provided to move the imaging system thus described relative to the photoreceptive surface in two axes orthogonal to each other thus exposing the photoreceptive surface.

Abstract: A flexible multi-line conductor and multiple luminaire connectors may be provided. Each one of the luminaire connectors may be coupled to a corresponding luminaire and the flexible multi-line conductor. Each of the luminaire connectors may be moveable relative to each other. The flexible multi-line conductor may bend in response to movement of any of the luminaire connectors relative to each other. The flexible multi-line conductor may include multiple conductors. Each one of the luminaire connectors may couple a corresponding one of the luminaires to a different set of the conductors than the other luminaire connectors couple to the other luminaires.

Abstract: In at least one embodiment of the light source (1), the latter includes at least one semiconductor laser (2), which is designed to emit a primary radiation (P) of a wavelength of between 360 nm and 485 nm inclusive. Furthermore, the light source (1) comprises at least one conversion medium (3), which is arranged downstream of the semiconductor laser (2) and is designed to convert at least part of the primary radiation (P) into secondary radiation (S) of a different, greater wavelength than the primary radiation (P). The radiation (R) emitted by the light source (1) here displays an optical coherence length which amounts to at most 50 ?m.

Abstract: A lighting device comprises an elongated assembly forming a water-tight chamber adjacent a first end of the lighting device, where the first end includes a transparent face along a long axis of the elongated assembly. A lighting module, having a first light source and a second light source positioned on opposite ends of the lighting module, is positioned within the water-tight chamber so that the first light source is adjacent to and is configured to project light out the transparent face in a first direction along the long axis of the elongated assembly. The second light source is configured to illuminate along an elongated portion of the elongated assembly, where the elongated portion extends from the water-tight chamber in a second direction along the long axis of the elongated assembly opposite from the first direction, and out translucent circumferential sides of the elongated portion. A button on the module allows one to selectively alternate between the first and second light sources.

Abstract: An LED package containing integrated circuitry for matching a power source voltage to the LED operating voltage, LEDs containing such integrated circuitry, systems containing such packages, and methods for matching the source and operating voltages are described. The integrated circuitry typically contains a power converter and a constant current circuit. The LED package may also contain other active or passive components such as pin-outs for integrated or external components, a transformer and rectifier, or a rectifier circuit. External components can include control systems for regulating the LED current level or the properties of light emitted by the LED. Integrating the power supply and current control components into the LED can provide for fabrication of relatively small LEDs using fewer and less device-specific components.

Abstract: A lighting fixture system, comprising a first illuminant, a secondary illuminant; and a sensor configured to detect a predetermined condition, the sensor being coupled to the first illuminant and the secondary illuminant, the first illuminant and the secondary illuminant comprising different light sources, the sensor configured to cause modulation of the first illuminant and the secondary illuminant in response to detection of the pre-determined condition.

Abstract: A method and apparatus is provided for a multiple light-source illuminating device, the design and construction of which is derived from the lighting requirements of a specific lighting application. The resulting illuminating device (16) provides illumination according to the principles of lighting practice for the optimal performance of visual tasks. Coupling with sensors (21) and logical control (20) allows illumination intensity and spectrum to be varied according to changing user needs. The illuminating device includes multiple discrete light emitting components of different spatial intensity distribution and color spectrum mounted in specific orientations such that the application oriented combined lighting effect is created. The control is provided via a differentiated power supply (19) capable of affecting the current, voltage and duty cycle determining the relative contribution of each light source effecting a different spatial intensity distribution and color spectrum.

Abstract: A LED flash bulb decorating light with features of able to achieve complicated light variation by employing simple circuit design, which comprises a power cord with a power plug, a series of single color, dual color or multiple color LED flash bulb forming in series or parallel circuit with the power cord. And a circuit control box comprises a low pass filter circuit and a power reset circuit and installed between the power plug of the power cord and the LED flash bulb, wherein the LED flash bulb at least comprises a LED chip and an IC driving element for driving the LED chip with DC power according to the setting time sequence to generate desired light variation. And the power reset circuit reset power supply at the repeated setting time interval to enable each LED flash bulb on the power cord to restart flash sequence to maintain the desired synchronous light variation.

Abstract: An LED lamp includes a lamp frame, a reflector received in the lamp frame, a plurality of LED modules received in the lamp frame and an envelope covering an opening of the lamp frame. The lamp frame is made of a material with a good heat conductivity and thermally connects the LED modules. The reflector includes a plurality of interconnecting reflecting cells, each reflecting cell separating a corresponding LED module from others. Each LED module faces to a corresponding reflecting cell and light emitted therefrom is reflected by the reflecting cell to radiate out of the envelope.

Abstract: An LED apparatus for illumination toward a preferential side in a downward and outward direction including a shield member in the form of a layer positioned over LED packages and secondary lens members. The shield member has a shield portion and a substantially planar non-shield portion thereabout. In preferred embodiments, the shield portion extends over a part of the lens portion of the secondary lens member. A cover preferably secures the shield member with respect to the secondary lens member, the primary lens and the LED package, the shield member preferably being sandwiched between the cover and the flange of the secondary lens member.

Abstract: A low profile linear high bay fluorescent luminaire with a downwardly facing and room side accessible ballast channel. The lighting fixture includes a housing assembly having a longitudinal axis with a first reflector located on a first side of the longitudinal axis. A second reflector is located on a second side of the longitudinal axis. The first and second reflectors are spaced apart with at least one ballast therebetween. At least one ballast is coupled to the housing assembly and extends downwardly from the housing assembly. A cover for the ballast is located below the ballast. The lighting fixture also includes a means for releasably coupling the cover to the housing assembly. The lighting fixture can be suspended from a ceiling or joist in a number of ways including mounting brackets, wire hangers, and ceiling assemblies, and can have an occupancy sensor attached thereto.