Abstract: A method for producing a luminaire housing on an additive manufacturing system includes selecting a luminaire housing base shape from which a data file of a first convex polyhedral model is built, rescaling the first convex polyhedral model into a larger convex polyhedral model, filling the larger convex polyhedral model with multiple versions of the first convex polyhedral model, separating larger convex polyhedral shape model into structural unit shape, and providing the data file containing the structural unit shapes to the additive manufacturing system. In some implementations an interior volume of the larger convex polyhedral shape model can be cleared of portions of first convex polyhedral model. The method includes the additive manufacturing system producing one or more structural units based on the structural unit shapes described in the electronic data file. A non-transitory computer readable medium, and a luminaire housing including a light source are described.

Abstract: Provided is a device configured for attachment to a lighting fixture. The device includes an engagement mechanism that allows the lighting fixture to be mounted within a recess of a substantially flat surface. The engagement mechanism is constructed to facilitate movement of a tension mechanism from a maximum tension position to a minimum tension position. Movement of the engagement mechanism is in response to an applied force generated by contact of the engagement mechanism with a first side of the substantially flat surface. Also provided is a method for mounting the lighting fixture using the engagement mechanism.

Abstract: Provided is a deep dimming control method and a driver control circuit for controlling brightness to a plurality of LEDs, that includes a controller which generates a first pulse width modulation signal, and a second pulse width modulation signal is used to switch between closed loop control and open loop control of the light intensity of the LEDs, and at least one comparator configured to receive the first PWM signal or the second PWM signal from the controller. The comparator compares the first PWM signal to a measured output current signal and regulates the output current to the LEDS in the closed loop control until a predetermined output dimming level is reached. Upon reaching the predetermined output dimming level, the controller generates the second PWM signal to another comparator, and the output current is maintained at a preset value determined by calibration during the closed loop control.

Abstract: A light bar and a refrigeration display using the light bar are disclosed. The light bar includes an optical component, a housing for reflecting light and a substrate assembly. The optical component and the housing together form a tube with a cavity. The substrate assembly is held in the cavity and includes a substrate and a plurality of LED light sources mounted on at least one side of the substrate. Light emitted from the plurality of LED light sources is irradiated to at least one predetermined area perpendicular to the substrate after passing through the optical component.

Abstract: Provided is a receptacle for installation within a lighting fixture. The receptacle includes a platform (i) for exposure external to the lighting fixture and (ii) providing connectivity for coupling to an external control device and a base operationally coupled to the platform and including a first set of one or more nodes configured for coupling to a first set of wires.

Abstract: Thermal management approaches and methods for structures requiring certain optical and thermal properties, for example, components of LED-based lighting units. Such a structure is in thermal communication with a source of visible light and thermal energy, and visible light emitted by the source passes through the structure. The structure includes a portion formed of a composite material containing a polymeric matrix material and a fiber material that contributes an optical scattering effect to the visible light passing through the composite material. The fiber material is made up of individual fibers that each comprise a core material and an opaque diffusive white coating on an external surface thereof. The fiber material and its coating contribute to the thermal conductivity and an optical scattering effect of the composite material.

Abstract: According to some embodiments, a system and housing provide a lamp including a heat sink including: an annular tube including a first end and a second end, a plurality of fins extending radially from an exterior surface of the annular tube, wherein a length of each fin extends from the first end of the annular tube to the second end of the annular tube; a plurality of light sources in thermal contact with the heat sink; a driver circuit operative to provide the input voltage and current for the plurality of light sources; and a capper positioned at the second end of the annular tube, wherein the capper is operative to be received in a socket. Numerous other aspects are provided.

Abstract: A lighting system includes a light source configured to generate light toward one or more surfaces or materials to inactivate one or more pathogens on the one or more surfaces or materials. The light includes an inactivating portion having wavelengths in a range of 280 to 380 nanometers.

Abstract: Provided is a lighting assembly comprising a pin end connector and a knuckle end connector. The pin end connector includes a protrusion having at least one wall and a rotational fastener configured to be received through and retained by the wall. The knuckle end connector includes a discontinuous seat having a first opening configured to receive the protrusion and a second opening configured to receive the rotational fastener. The pin end connector is configured to be received by the knuckle end connector and pivotally rotate to attach the first connector assembly with the second connector assembly. Also provided is a method for joining the pin end connector with the knuckle end connector.

Abstract: A lighting device and method generates monochromatic light from one or more light point sources. A phosphor body is spatially separated from the point light source(s) to receive the monochromatic light generated by the first point light source and provide a multi-wavelength light through luminescence. The multi-wavelength light is emitted from the phosphor body across a multi-dimensional surface. Optionally, a lens body can receive the multi-wavelength light from the multi-dimensional surface and both reflect and refract the multi-wavelength light in an exit distribution out of the lens body.

Abstract: A heatsink having integrated electrical and base contacts for use with a light emitting diode (LED) light source. In some embodiments, a heatsink assembly for an LED lamp includes a first metallic heatsink component having a first wall portion and a first electrical contact, and a second metallic heatsink component having a second wall portion and a second, separate contact portion. A non-electrically conducting heatsink housing is configured to house the first wall portion and the second wall portion of the first and second heatsink components such that the first electrical contact extends from the non-electrically conducting heatsink housing and the second contact portion extends from the plastic housing in a manner to facilitate connection to hot and neutral lines of a power source.

Abstract: Composite light sources and methods use a low-blue component light source emitting first substantially white light and a high-blue component light source emitting second substantially white light. The second substantially white light has a greater correlated color temperature than the first substantially white light. The first and second substantially white light combine to provide substantially intermediate warm-white light.

Abstract: A sensor adjustment system includes an exterior housing configured to hold a directional sensor inside the housing. The directional sensor is configured to obtain data outside of the housing along a boresight of the directional sensor. The system also includes one or more fasteners configured to be operably coupled with the directional sensor inside the housing. The one or more fasteners are configured to be actuated in order to change an orientation of the boresight of the directional sensor. The one or more fasteners are configured to be actuated from outside of the housing while changing the orientation of the boresight of the directional sensor inside the housing.

Abstract: Aspects of the present disclosure are directed to a composite light source which includes at least one blue light source having peak wavelength in the range of about 400 nm to about 460 nm; at least one yellow-green garnet phosphor; and at least one narrow-band red-emitting down-converter. Such composite light source may have a Lighting Preference Index (LPI) of at least 120. In other aspects the disclosure is directed to composite light source comprising at least one blue light source having peak wavelength in the range of about 400 nm to about 460 nm; at least one yellow-green garnet phosphor; and at least one broad red down-converter. In this latter aspect the composite light source may have a Lighting Preference Index (LPI) of at least 120. Numerous other aspects are provided.

Abstract: A light emitting apparatus comprising an at least substantially omnidirectional light assembly including an LED-based light source within a light-transmissive envelope. Electronics configured to drive the LED-based light source, the electronics being disposed within a base having a blocking angle no larger than 45°. A plurality of heat dissipation elements (such as fins) in thermal communication with the base and extending adjacent the envelope.

Abstract: A lighting apparatus for emitting white light including a semiconductor light source emitting radiation with a peak emission between from about 250 nm to about 500 nm and a first phosphor having a peak emission between about 550 and 615 nm, wherein an overall emission spectrum of the lighting apparatus has a depression between about 550 and 615 nm, whereby the red-green color contrast is increased versus a reference illuminant.

Abstract: A light source (10) comprises a light engine (16), a base (24), a power conversion circuit (30) and an enclosure (22). The light engine (16) comprises at least one LED (12) disposed on a platform (14). The platform (14) is adapted to directly mate with the base (24) which a standard incandescent bulb light base. Phosphor (44) receives the light generated by the at least one LED (12) and converts it to visible light. The enclosure (22) has a shape of a standard incandescent lamp.

Abstract: A lighting system includes a light source configured to generate light toward one or more surfaces or materials to inactivate one or more pathogens on the one or more surfaces or materials. The light includes an inactivating portion having wavelengths in a range of 280 to 380 nanometers.