Abstract: Systems and methods for enabling communication with a wired sensor are provided. A wired sensor may be adapted for wireless communication using a sensor interface. A sensor interface is communicatively coupled with a wired sensor that provides information about a detected environmental condition. The sensor interface wirelessly transmits information received from the wired sensor to a controller that may control an electrical load based on the wirelessly transmitted information.

Abstract: Exemplary lighting devices have sensors, intelligence in the form of programmed processors and communication capabilities. Such a device is configured to monitor one or more conditions external to a lighting device not directly related to operational performance of the respective lighting device. One or more such devices can work in a networked system, to support a variety of applications separate and in addition to the lighting related functions of the device(s).

Abstract: A lamp uses a solid state source to pump one or more doped semiconductor nanophosphors to produce a light output of a desired characteristic. The nanophosphor(s) is dispersed in a material, examples of which include liquids and gases. Various nanophosphors are discussed. In the examples, the material with the doped semiconductor nanophosphor(s) dispersed therein appears at least substantially clear when the lamp is off. The exemplary lamp also includes circuitry for driving the solid state source and a housing that at least encloses the drive circuitry. The lamp has a lighting industry standard lamp base mechanically connected to the housing and electrically connected to provide electricity to the circuitry for driving the solid state source.

Abstract: Features of the invention are related to drive circuits that provide both power factor correction and voltage conversion in a single circuit and in some instances drive an LED array. This single stage converter uses a SEPIC or Cuk topology and can operate LED arrays that have DC voltages above or below the AC line voltage. An output side filter and bulk energy storage device is placed at the output of the circuit. Bulk energy storage can be provided by an inductor, a capacitor, or a combination of an inductor and a capacitor. The output side filtering can be provided by a capacitor or a capacitor and an inductor. The circuit also includes a switch and a switch control device for controlling the switch to provide power factor correction.

Abstract: The present application generally relates to techniques and equipment for color correction of natural daylight. More particularly, the present application relates to color correction of daylight entering the interior of a structure to maintain a substantially constant color temperature over a period of time through deployment of an opto-luminescent material in a daylighting device. The color correction through deployment of an opto-luminescent material and/or color filter in a daylighting device preferably maintains high lumen intensity.

Abstract: A programmable lighting control system integrates time-based, sensor-based, and manual control of lighting and other loads. The system includes one or more groups of controlled lighting areas, which may be, for example, floors of a building. Each group may have one or more lighting zones, which may be, for example, individual rooms or offices on a building floor. Each lighting zone includes occupancy and/or daylight sensors that may be wirelessly coupled to a gateway of the group. Each gateway is coupled to a network, such as, for example, a local area network (LAN). Control software, residing on a computer (e.g., a personal computer or a server) coupled to the network and accessible via the network, remotely communicates with and controls the lighting zones either individually, groupwise, or globally. Each lighting zone can also be locally controlled at the gateway and can function independently of the control software and the gateway.

Abstract: Recessed-lighting fixtures having features to facilitate alignment between adjacent fixtures. According to one embodiment of the present invention, alignment means are provided on downwardly directed walls of a recessed lighting tray, ensuring alignment between adjacent fixtures. In another embodiment, apertures on the tray permit relative movement between the tray and a recessed lighting pail, allowing the tray to be quickly and easily repositioned relative to the pan.

Abstract: Board level conditions associated with the operation of multiple LEDs are sensed and used to control a driver that powers the LEDs. The driver is controlled via a 0-10V control interface. The board-level conditions include, but are not limited to, temperature, ambient light, light intensity, operating time, time of day, current, and voltage. An on-board intelligent (OBI) controller processes the 0-10V control signal before it is provided to the driver to better control the LEDs. In some systems the OBI controller works in conjunction with a separate 0-10V controller that controls one or more luminaires.

Abstract: In one aspect, the present invention provides light emitting devices, including light fixtures and luminaires. In some embodiments, a light emitting device comprises at least one light source, a lightguide operable to receive light from the at least one light source at a first location on the lightguide, at least one light extraction region optically coupled to the lightguide and a substantially non-scattering region along a portion of the lightguide.

Abstract: A thermal conductivity and phase transition heat transfer mechanism has an opto-luminescent phosphor contained within the vapor chamber of the mechanism. The housing includes a section that is thermally conductive and a member that is at least partially optically transmissive, to allow emission of light produced by excitation of the phosphor. A working fluid also is contained within the chamber. The pressure within the chamber configures the working fluid to absorb heat during operation of the lighting device, to vaporize at a relatively hot location at or near at least a portion of the opto-luminescent phosphor as the working fluid absorbs heat, to transfer heat to and condense at a relatively cold location, and to return as a liquid to the relatively hot location. Also, the working fluid is in direct contact with or contains at least a portion of the opto-luminescent phosphor.

Abstract: A lighting assembly includes a light source and a lens. The lens includes a light transmissive portion and an optic shield portion for blocking or redirecting at least a portion of light generated by the light source. The light source can include one or more light emitting diodes (LEDs). The optic shield can be painted on or otherwise applied to a portion of the lens. Alternatively, it can be integrally formed with the lens. The optic shield can be an opaque material for blocking light generated by the light source or can be a reflective material for reflecting light generated by the light source through the light transmissive portion of the lens. Methods for making an optic shield are also described.

Abstract: A thermal conductivity and phase transition heat transfer mechanism incorporates an active optical element. Examples of active optical elements include various phosphor materials for emitting light, various electrically driven light emitters and various devices that generate electrical current or an electrical signal in response to light. The thermal conductivity and phase transition between evaporation and condensation, of the thermal conductivity and phase transition heat transfer mechanism, cools the active optical element during operation. At least a portion of the active optical element is exposed to a working fluid within a vapor tight chamber of the heat transfer mechanism. The heat transfer mechanism includes a member that is at least partially optically transmissive to allow passage of light to or from the active optical element and to seal the chamber of the heat transfer mechanism with respect to vapor contained within the chamber.

Abstract: A lighting system having at least three light sources receives an input relating to color coordinates of a target point representing a desired color characteristic for a combined output from the light sources. The system defines first-pass endpoints corresponding to color characteristics of the light sources when operated at respective maximum intensities. The system determines first-pass amounts of respective maximum intensity contributions from the light sources to achieve light of the target point. When dimming the light to an intensity proportion, the system determines first-pass driver settings from the first-pass amounts and the intensity proportion. The system defines second-pass endpoints corresponding to color characteristics of the light sources when operated at the determined first-pass driver settings.

Abstract: Lighting devices and/or systems offer dynamic control or tuning of color of light. The lighting systems utilize sources, such as solid state sources, to individually pump a number of different phosphors of types having relatively high degrees of color purity. The phosphor emissions, however, are still broader than the traditionally monochromatic color emissions of LEDs. The different phosphors can be independently excited to controllable levels, by individually controlled sources rated for emission of energy of the same spectrum. Adjustment of intensities of electromagnetic energy emitted by the sources independently adjusts levels of excitations of the phosphors selected to emit different colors of relatively high purity and thus the contributions of pure colors to the combined light output, for example, to enables color adjustment of the light output over a wide range of different selectable colors encompassing much of the gamut of visible light.

Abstract: The present application relates to a lighting applications. In particular, the present application describes examples of lighting fixtures and light bulbs containing a light transmissive optic. The orientation of the solid state emitters together with the contoured output surface of the light transmissive optic produce a tailored light output distribution over a designated planar surface. The light generated by the solid state light emitters is of a sufficient intensity to illuminate the designated planar surface.

Abstract: Systems and methods for reducing lamp restrike time are provided. In a lighting apparatus having a housing, a reflector, and a lamp positioned so that at least a portion of the outer jacket of the lamp is within the reflector, a circulating device is operated when the lamp is off and a temperature inside the housing is above a predefined temperature. The circulating device circulates air around the outer jacket of the lamp to cool the lamp so the restrike time is reduced without the need for a starting device with a starting voltage high enough to restart the lamp when the lamp is hot.