Abstract: A compact safer tightly secured lighting system comprises an illumination element module, a terminal box, an illumination element module driver, and a junction box, wherein the illumination element module is composed of a heat sink and a lamp housing. An outer wall of a lower end of the heat sink has a circular recess provided for embedding a temperature controller. The lamp housing is composed of an external case, a reflective cup, a protection mask and a plurality of circlips having elasticity. A spacing is between the outer wall of the protection mask and the internal wall of the external case. The circlip is disposed to an outer wall of the protection mask, where one end is joined to a top end of the protection mask while another end has a tooth buckle corresponding to the internal wall of the external case. The tooth buckle stretches into the spacing to allow the circlip to locate between the external case and the protection mask so as to closely combine the protection mask and the external case.

Abstract: The invention describes an LED lighting unit comprising a container with a number of partially reflective side walls; a light exit opening defined by the side walls; and a number of light-emitting diodes arranged in the container to emit light of a first color through the light exit opening during an on-state of the lighting unit; characterized in that the material properties of the partially reflective container side walls are chosen to impart a second non-white color to the container side walls, and to absorb light in at least one specific region of the visible spectrum such that light of the non-white second color exits the lighting unit through the light exit opening during an off-state of the lighting unit. The invention further describes a method of manufacturing such an LED lighting unit.

Abstract: A wearable electronic device includes a primary bead, two spacer beads and a bead string. The two spacer beads each defines a first side and a second side opposite to each other. The first sides of the two spacer beads are respectively disposed on two opposite sides of the primary bead. Two ends of the bead string are respectively connected to the second sides of the two spacer beads.

Abstract: A luminaire, in particular as a table, camping, work, party or garden luminaire, comprising at least one mounting, one supply voltage terminal, and one fastening element for at least one LED light. The LED luminaire is comprised of at least one LED panel that is movably articlulated at the fastening element. The object is to provide an LED panel that can be made available in a small-dimensional flat design and that can prevent an overheating of the individual LEDs.

Abstract: A headlight system for a vehicle is enabled for a bending light function. A first light module generates a conventional asymmetrical dipped headlight with an upper first light/dark boundary on the driver's side of a central axis. A second light module has a matrix of light-emitting diode units. A control unit actuates light emissions of the individual light-emitting diode units separately. A bend-detection unit detects the radius of a curve in the direction of travel of the vehicle. The light-emitting diode units have at maximum two horizontal lines, and they generate an emission characteristic with a lower second light/dark boundary below the first light/dark boundary of the dipped headlight, an upper third light/dark boundary above the first light/dark boundary of the dipped headlight, and a lateral fourth light/dark boundary on the side of the light emissions of the second light module the faces the driver's side.

Abstract: A solar cell mounting apparatus and methods for supporting solar panel sets on a pole. The invention contemplates both vertical and horizontal cell support arrangements and embodiments configured to installation in urban areas and embodiments providing protection of components in high wind areas.

Abstract: A light engine is disclosed in which the light engine contains a core comprising an opening extending completely through the core and independently addressable LED segments. The opening defines an inner surface of the core. Each segment has multiple LEDs. A PCB contains a body adjacent to one of an inner or outer surface of the core and to which the LED segments are attached and legs extending from the body and bent to be adjacent and traverse to the other of the inner or outer surface. Each leg is associated with a different LED segment. Control circuitry is connected with the legs of the flexible PCB and independently controls parameters of the LED segments to provide a preset illumination distribution and intensity based on user input.

Abstract: A lens comprises an elongated shape. The lens has a short axis and a long axis. The lens comprises an upper surface through which a substantial majority of light exits the lens when a light emitting element is situated at or below a base of the lens. The upper surface includes a trough that extends along at least one of the short and the long axis. The upper surface includes a surface of a curved wall that joins the upper surface to the base of the lens. A lower surface of the trough is curved along the short axis and along the long axis. The lower surface of the trough has a curvature along the short axis that differs from a curvature along the long axis.

Abstract: The present disclosure provides graphite-containing compositions that exhibit favorable thermal conductivity characteristics.

Abstract: An LED lamp panel capable of adjusting color temperature includes a first LED lighting circuit, a second LED lighting circuit and a conduction control circuit. The first LED lighting circuit has first color temperature information, the second LED lighting circuit has second color temperature information, and both first and second LED lighting circuits are electrically connected to conduction a control circuit. The LED lamp panel is capable of adjusting the color temperature of the LED lamp panel according to the color temperature information of the manufactured LED light panel, so as to adjust the color temperature of a lamp product. This invention is applicable for changes of market requirements flexibly to reduce the lighting manufacturers' pressure and risk of inventory. Consumers can adjust the color temperature of the lamp by themselves to fit different living or working environments.

Abstract: A light source unit includes a light source section and a fluorescent structure. The fluorescent structure includes a fluorescent part where light from the light source section enters. The fluorescent part includes a transparent grain in addition to a plurality of phosphors.

Abstract: A light source includes a substrate on which an excitation light source is mounted, a lens including a light transmitting portion that transmits light from the excitation light source and a body attached to the substrate, a first thermal expansion absorber that protrudes from the body and has high heat resistance and elasticity, and a cover fixed to the substrate in a state where the body of the lens is sandwiched between the cover and the substrate via the first thermal expansion absorber.

Abstract: A lamp reflector assembly that includes a lamp reflector and a circuit board holder plate. The lamp reflector and the circuit board holder plate each include guide ribs to hold a lamp circuit board in place in the reflector assembly. The board holder plate provides X, Y, Z location of the lamp circuit board as well as visual position verification of the lamp circuit board held in the reflector assembly. Finger tabs protruding from the lamp circuit board through slots in the board holder plate permit repositioning the lamp circuit board so that the lamp circuit board, the board holder plate, and the lamp reflector are properly positioned relative to each other prior to securing the board holder plate to the reflector.

Abstract: Provided is a lamp assembly, including: a housing including a bottom portion and side wall portions forming a light source mount portion in a longitudinal direction, a flange portion being connected to each front end of the side wall portions and forming a first insertion portion with an inner side surface thereof being open, and a second insertion portion provided on a bottom surface of the first insertion portion; a lampshade provided therein with a light source, and coupled to the mount portion; a translucent panel slidably coupled to the first insertion portion; a packing fitted in the second insertion portion; and a press bar being inserted in the first insertion portion between an upper surface of the flange portion and the translucent panel and pressing the translucent panel and the packing, thereby fixing the translucent panel and endowing the packing with watertightness.

Abstract: An embodiment relates to a target-oriented light emitting device comprising: a light emitting part for emitting light; a light focusing part for focusing the light emitted from the light emitting part; a first light adjusting part to which the light focused by in the light focusing part is incident, adjusting the orientation direction of the light, and emitting the adjusted light; and a second light adjusting part disposed between the light focusing part and the first light adjusting part so as to adjust a focal position of the light incident to the first light adjusting part.

Abstract: A direct-type backlight module and a LED array are provided. The backlight module includes a supporting plate; a LED array, disposed on the supporting plate, the LED array including a LED light source; an optical lens encapsulating the LED light source, the optical lens including a light entrance surface and a light exit surface for light rays emitted from the LED light source; a light adjusting structure, disposed apart from the supporting plate, a chamber defined between the light adjusting structure and the supporting plate; and a supporting structure, disposed on the light exit surface of the optical lens, extending within the chamber toward the light adjusting structure along a direction away from the supporting plate, the supporting structure configured to support the light adjusting structure. Generation of dark shadows is suppressed and structural strength of the supporting structure is enhanced.

Abstract: A lighting system and related methods are disclosed herein. The lighting system may have a mounting fixture and a light fixture. The mounting fixture is configured to engage a mounting surface. The light fixture is configured to engage the mounting fixture and has a driver configured to drive a light source. A first fastener having a movable elongated member is configured to removably couple the light fixture to the mounting fixture in an extended configuration. A second fastener having a quick connect feature is configured to removably couple the light fixture to the mounting fixture in a retracted configuration.

Abstract: A tubular lighting device encloses a plurality of LEDs and delivers light with uniformity, resembling the light delivered by a single linear light source. The tubular lighting device comprises a housing, a lighting chassis mounted on the housing, at least one circuit board with a plurality of LEDs mounted on the lighting chassis, each LED having a length A and two adjacent LEDs being separated by a distance L, a thin film mounted on the base and above the plurality of LEDs, the thin film being separated from the plurality of LEDs by a distance H, and a lens mounted on the lighting chassis and above the thin film.

Abstract: A light source module includes: a light source having an upper surface comprising a light emission surface; and a light-guide member comprising a lens portion having a central axis. The lens portion includes: a concave incidence surface facing the light emission surface of the light source; a reflection surface disposed outside the incidence surface, the reflection surface being configurd to reflect part of light entering through the incidence surface, and being inclined at an angle of 45 degrees or more from a direction perpendicular to the central axis; and exit surface. The incidence surface includes: a first incidence area having four-fold symmetry about the central axis and having a curved concave shape in a cross section containing the central axis; and a second incidence area having a curved convex shape in a cross section rotated 45 degrees from the first incidence area and containing the central axis.

Abstract: A lamp assembly for a vehicle comprising a housing, a reflector mounted in the housing, a light source, a printed circuit board or PCB mounted on a heatsink of the lamp assembly and coupled to the light source to control operation of the light source. The PCB has a first connector for coupling to a second connector comprising a body having a plurality of resilient or elastic arms that each have a detent for locking the connector to the component and retain electrical contact with the PCB. The wall of the heatsink defines an aperture for receiving the second connector and provides a locking surface that deflects the arms towards the body while engaging and cooperating with the detests to lock the connector to the PCB. The free end of the arms extend beyond the mounting wall and are actuated to unlock the connector from the PCB.

Abstract: There is provided a carrier (6) for solid-state lighting devices (2). The carrier (6) is intended to be arranged in a light bulb and is formed from one single flat and formable substrate (1), which has been bent to a generally tube-shaped form. The carrier (6) includes: an annular mounting portion (4) for mounting the carrier (6) inside the light bulb; and two or more strips (5) extending generally parallel to each other from the annular mounting portion (4) and being separated from each other in a tangential direction of the annular mounting portion (4). Each strip (5) has one or more electrically conducting paths (3) and a solid-state lighting device (2) mounted thereon. There is also provided a method for producing a tube-shaped carrier (6). The strips are easy to shape by bending, twisting and/or folding, resulting in a significant freedom in the positioning of the SSL devices.

Abstract: A landscape lighting assembly is provided that comprises a support stanchion having a proximal end and a distal end. The proximal end of the support stanchion is configured to be connected to a surface. A lamp housing is located at the distal end of the support stanchion and an illumination element (e.g., one or more light emitting diodes) is located inside of the lamp housing. A power supply configured to supply power to the illumination element is also provided. The lamp housing includes a cylindrical gobo comprising a decorative pattern configured to cause a shadow of the decorative pattern to be cast on the surface when the illumination element is lighted.

Abstract: A lighting control system includes a monitoring assembly comprising a switch, an energy harvesting device, and radio circuitry. The switch is manually actuated to activate or deactivate network-controlled lamps. The energy harvesting device converts kinetic energy of the actuation of the switch into electric energy that powers the radio circuitry. The radio circuitry wirelessly broadcasts a radio control message to two or more networked controllers that control activation or deactivation of the lamps. The networked controllers communicate with each other and determine which of the networked controllers is a commander controller responsive to receiving the radio control message. The commander controller communicates a control message to other networked controllers to activate or deactivate the lamps based on the radio control message received from the monitoring assembly.

Abstract: A modular system comprising track-mounted fixtures and track is described. In some embodiments, fixtures access electrical power through electrified railings recessed within a relatively narrow power slot of the track. Primary mechanical support of the fixture weight is optionally provided from a magnetic mounting surface surrounding the power slot. The track cross-section optionally provides mounting surface area on mounting wings, allowing a narrower slot housing. Optionally, secondary mechanical support provided within the slot comprises a deployable anchoring element which laterally expands into a receiving area. Optionally, deployment comprises rotation of the anchoring element. The anchoring element, in some embodiments, acts as a secondary mechanical support, preventing, for example, accidental detachment of the fixture from the slot, without preventing repositioning movements of the fixture along the slot, even when fully deployed.

Abstract: An electrical system includes: a first base structure; a second base structure spaced apart from and opposing the first base structure; a lens unit including a first end portion attached to the first base structure and a second end portion attached to the second base structure; a first light source attached to the first base structure and enclosed within the lens unit; and a second light source attached to the second base structure and enclosed within the lens unit.

Abstract: An LED light bulb assembly having a base provided with a connection portion for connecting the assembly to an electric light bulb socket, and with a holding portion, the connection portion and the holding portion facing in opposite directions running essentially in parallel to a central axis of the assembly. The assembly has a substrate carrying at least one LED and having a mounting section which is affixed to the holding portion in a fully assembled state of the assembly. A method for assembling an LED light bulb assembly as described above is also disclosed. The LED light bulb assembly is easy to assemble, yet rugged, and allows for fully automating the production or at least minimizing manufacturing efforts, and thus reducing the costs of LED light bulbs.

Abstract: Linear lighting using light-emitting diode (LED) light engines is disclosed. The linear lighting includes a printed circuit board (PCB) with a number of LED light engines disposed on it. A light guide is disposed on the PCB adjacent to the LED light engines. The light guide accepts the light from the LED light engines in a first location and is arranged to emit the light at a desired position that is spaced from the first location. By lengthening the optical path, the light guide may spread the emitted light and provide a more uniform appearance for the linear lighting.

Abstract: A vehicle lamp includes a light source, and a light guide body, wherein the light guide body has a first light guide section disposed to have one surface facing the light source, and a second light guide section formed to protrude from a second end surface and a third end surface of the first light guide section, the first light guide section includes an incidence section, a first reflective section provided on a surface facing the incidence section, a second reflective section and a third reflective section provided on an end surface that constitutes a profile of the first light guide section.

Abstract: Apparatus, methods and systems are provided for improving the quality of illumination from a luminaire. The apparatus, methods and systems provide quantum dots, methods and apparatus for stimulating device light emission from quantum dots, sensors, and controllers to adjust quality of illumination from a luminaire.

Abstract: A strip lamp made for easy assembly and disassembly contains a U-shaped groove body and a cover made for covering the groove body. The groove body and the cover are attached by a latch on the cover and a matching lock on the groove body on one side, and a pivot made by a V-shaped groove on the cover on the other side. Assembly can be conducted without the use of fasteners so that the strip lamp may be easily assembled.

Abstract: An image recognition-based intelligent alarm lamp includes a lighting device, a rotating mechanism, a high-definition camera, a DC motor, an LED alarm lamp and an embedded processing device. The lighting device is mounted onto the rotating mechanism and rotated with the rotating mechanism to illuminate an object from different directions; the DC motor is coupled to the rotating mechanism for driving the rotation of the rotating mechanism; the high-definition camera is provided for capturing a video stream around a police car; the embedded processing device is provided for receiving an image around the police car, determining whether or not to send a rotation drive signal to the DC motor based on the image around the police car, and determining a flashing method of the LED alarm lamp based on the image around the police car. This invention improves the level of recognizing a criminal around the police car.

Abstract: An omnidirectional optical communication system. The omnidirectional optical communication system includes a multifaceted structure, a laser transmitter with a steerable mechanism, an optical detector receiver, and an angle-of-arrival system. In one aspect, the laser transmitter with a steerable mechanism, the optical detector receiver, and the angle-of-arrival system are housed in within the multifaceted structure, which enables omnidirectional optical communication. In another aspect, the omnidirectional optical communication system is used in a spacecraft for inter-spacecraft omnidirectional optical communication. In yet another aspect, the omnidirectional optical communication system is used in terrestrial applications for gigabit communications in WiFi, inter smartphones, internet of things and smart cities. In yet another aspect, the omnidirectional optical communication system further includes a global positioning system.

Abstract: An LED spot lamp with double sides emitting light including a lamp cap, a lamp cup with one end connected with the lamp cap together and a lens connected to the other end of the lamp cup is provided. A cavity is encircled by the lamp cup and the lens. An LED light source including a circuit board provided with LEDs and an LED driver for driving the LEDs to emit light, and a radiator supporting the circuit board and dissipating heat generated by the LEDs are arranged in the cavity. The circuit board includes a main light emitting plate irradiating the lens, and an auxiliary light emitting plate irradiating the direction away from the lens. The lamp cup is of a light transmitting glass structure. The brightness of light emitted from the main light emitting plate is greater than that of light emitted from the auxiliary light emitting plate.

Abstract: The application relates to a lighting device, comprising a housing, a planar arrangement of lamps, which are arranged in the housing, and a plate device, which is received on the housing, wherein a housing rear wall is formed by the plate device, the plate device has a circuit board, on which an electric circuit associated with the lamps is arranged, and the plate device has a heat sink device for passive cooling, which is formed by pin-type cooling elements. The application also relates to a headlight.

Abstract: An LED module includes a module board. A boss coaxial with a central axis of the module board is provided on one side surface of the module board, and the boss is provided, in a direction of the central axis of the module board, with a through hole through which a central rod of an LED lamp fixture passes, a side wall of the boss is provided with a fastener hole to allow a fastener to be inserted into the fastener hole to abut against an outer wall of the central rod of the LED lamp fixture; and multiple screws are fixedly mounted on the other side surface of the module board and configured to be detachably connected to drip holes in a surface of the LED lamp fixture respectively. An LED lamp including the LED module is provided, which has a reduced cost.

Abstract: A light source device of the invention includes an excitation light source, a wavelength conversion layer having a light incident surface and a light exiting surface, a reflection member, and a pickup system, wherein the light exiting surface at least has a first light exiting surface with a tilt with respect to an optical axis of the pickup system and a second light exiting surface with a tilt with respect to the first light exiting surface, the reflection member has a reflection surface along the optical axis of the pickup system and an end portion on the pickup system side extends closer to the pickup system than the light exiting surface, and a focal point of the pickup system is formed on a plane crossing the optical axis of the pickup system and containing the end portion of the reflection member.

Abstract: Provided is a light fixture comprising: a) a base; b) two housings for housing at least one light source each, the light source housing placed on the base, each housing configured for removable attachment to an accessory; c) an accessory for removably attaching to the housing; wherein the fixture is configured to be used with interchangeable accessories. Provided is light fixture comprising: a) a rectangular base; b) two housings for housing at least one light source each, the light source housings placed on the base; c) four LED boards as the light source, wherein each of the housings have two LED boards, all of the four LED boards placed in parallel configuration; each housing having an LED board facing a first end and a second end of the rectangular base in a parallel configuration to the end of the rectangular base, each of the housings configured for removable attachment of an accessory; and d) an accessory for removably attaching to the two housings.

Abstract: The present invention relates to an illumination device comprising a plurality of light sources emitting light, an optical gate; a light collector arranged between the light sources and optical gate and an optical projecting system adapted to image the optical gate at a distance along the optical axis. The light collector is adapted to collect light from a plurality of light sources and where the light collector comprises a plurality of lenslets collecting light from the light sources and convert the light into a plurality of light beams propagating along an optical axis. Where the axial distances between the lenslets and light sources along the optical axis for adjacent lenslets are different for at least some of the adjacent lenslets.

Abstract: A lighting device includes a plurality of light source circuit components, a circuit base board and an electrical connector module. Said circuit base board is used for carrying said plurality of light source circuit components. The plurality of light source circuit components are electrically connected to each other through the connecting wire of the circuit base board. The electrical connector module has a standard interface structure and an input terminal structure. Said input terminal structure has a plastic housing and a metal conductor. Said metal conductor is electrically connected to the connecting wires of said circuit base board. The standard interface structure has a standard interface and is connected to the external interface of the corresponding external conductor through a pluggable method.

Abstract: A display module including a display panel, a supporting member, a first circuit board, and a light blocking member. The display panel includes a display area and a non-display area. The non-display area is bent. The supporting member includes a first surface overlapping the display area; a second surface opposite to the first surface; and a third surface configured to connect the first surface to the second surface. The first circuit board faces the second surface and is electrically connected to the non-display area. The light blocking member contacts a bent area of the non-display area.

Abstract: An elongate, flexible printed circuit board (PCB) has a central section that carries LED light engines and other components, and a pair of wings, one on each side of the central section, adjacent to the central section. The wings carry adhesive to secure the PCB to a substrate, and may be separated from the central section in some cases by fold or score lines. The LED light engines may be positioned on a first side of the PCB and electrically connected to one or more components on a second side of the PCB. Taken together, the wings may have the same width as the central section, or they may have a greater width.

Abstract: A lamp, including a lamp cover, the lamp cover is in the shape of a strip having openings at both ends, and the lamp cover is respectively provided with two side walls and a top surface along a direction away from the light emitting surface, and the two side walls and the top surface form an accommodating cavity; a PCB board, the PCB board being mounted in the accommodating cavity along the length direction of the lamp cover; the lamp also includes a conductive component connected to an external power supply, and the conductive component is electrically connected to the PCB board.

Abstract: The light emitting device is provided with a plurality of emitted elements 11, 12 to 1n; a light diffusion element 40 which diffuses emitted light L11, L12 to L1n respectively from the light emitting elements 11, 12 to 1n and outputs diffused light L21, L22 to L2n; and an optical coupling element 50 which receives the diffused light L21, L22 to L2n and outputs the output light L3 that is obtained by coupling the diffused light L21, L22 to L2n. The light diffusion element 40 diffuses the emitted light L11, L12 to L1n into a range that includes the direction of the optical axis of the optical coupling element 50.

Abstract: An illumination device is provided with an optoelectronic light source and an optical body. The optical body is divided into an inner lens part and an outer reflector part adjoining thereon outward in relation to directions perpendicular to a main direction, which body parts are formed monolithically with one another. The inner part is formed as a Fresnel lens with active flanks which acts as a collimating lens, so that a first part of the light which passes through the Fresnel lens via the active flanks is refracted toward the main direction. A second part of the light which passes through the Fresnel lens via folding flanks is refracted away from the main direction. A reflection surface is provided on the outer reflector part, on which the second part of the light is incident and is reflected thereon and deflected with the reflection toward the main direction.

Abstract: Apparatus, systems, and methods for controlling light output in a lighting system based on defined light profiles are provided. In one example implementation, a light fixture can include a first light emitting diode (LED) array having one or more LED light sources and a second LED array having one or more LED light sources. The light fixture can include a power circuit configured to provide power to the first LED array and the second LED array according to a power distribution among the first LED array and the second LED array. The light fixture can include one or more control devices configured to control the power circuit to adjust the power distribution among the first LED array and the second LED array based at least in part on a signal indicative of a real time clock and a defined light profile associated with a user identified to be present in a space illuminated by the light fixture.

Abstract: An LED display module is disclosed. The LED display module includes: an active matrix substrate including a plurality of control units; a plurality of pairs of solder bumps arranged in a matrix on the active matrix substrate by transfer printing; a plurality of LED chips including pairs of electrodes connected to the corresponding plurality of pairs of solder bumps and arranged in a matrix on the active matrix substrate by transfer printing; grid barriers formed on the active matrix substrate to isolate the plurality of LED chips into individual chip units; and a multi-color cell layer including a plurality of color cells and aligned with the active matrix substrate such that the plurality of color cells match the plurality of LED chips in a one-to-one relationship. The plurality of color cells include first color cells, second color cells, and third color cells disposed consecutively in one direction.

Abstract: A thin profile surface mount LED lighting apparatus includes a housing, an LED board including multiple uniformly distributed LEDs, and a lens. The lens has a back side facing the LED board and a front side that provides a downward facing surface when the LED lighting apparatus is installed in an opening of a ceiling. The lens is disposed with respect to the LED board such that the LEDs illuminate the back side of the lens. A first spacing of the LEDs causes resulting light from the downward facing surface of the lens to be substantially uniform during operation of the apparatus. In one example, a thin front edge of a sidewall of the housing, forming a perimeter around the lens, is flush with the lens and is appreciably thin (e.g., a thickness of less than three millimeters), and a depth of the sidewall housing is less than one inch.

Abstract: The present invention relates to a lighting device (1, 1a) comprising an envelope (3), a carrier (4) arranged inside the envelope (3) and having solid state light sources (5) mounted on the carrier (4), driver circuitry (10) spaced apart from the carrier (4), at least one power line (9) connecting the solid state light sources (5) and the driver circuitry (10), and a wireless communication circuit (13) for receiving control signals, and for controlling the light output, during operation, from the solid state light sources (5). The wireless communication circuit (13) is connected to the at least one power line (9) for using the at least one power line (9) as a wireless communication antenna.

Abstract: Lighting devices, systems, and methods are disclosed. One lighting device includes a reflector, first and second groups of light emitters, and a controller. The reflector defines a reflective cavity having an opening and an interior surface including first and second features adapted to reflect light in different manners. The first and second groups of light emitters are positioned to emit light through the reflective cavity toward the first and second features, respectively. The controller is coupled to the first and second groups of light emitters, and is configured to control the first group of emitters to emit light having a first value of a characteristic of emitted light, and control the second group of emitters to emit light having a second value of the characteristic of emitted light different from the first value.

Abstract: Luminaires are disclosed that are configured to emit LED illumination. Certain components of the luminaire can be assembled without the use of fasteners. Further, the luminaires can include a plastic heat sink that can be molded with other components of the luminaire.