Abstract: Programmable occupancy sensors that control the on/off operation of a fluorescent lamp automatically determine loss of lamp life as the lamp is used. The programmable occupancy sensors can provide lamp life status and can automatically alert a user when a lamp is nearing its end of life and should be replaced. The occupancy sensors are also programmable to automatically maximize lamp life and energy savings by selecting an optimal time delay from among a number of selectable time delays at which to operate the sensor. The selection is based on an occupancy pattern sensed by the sensor over a given period of time. The optimal time delay, which prevents the lamp from turning off immediately after last sensing occupancy, extends lamp life by limiting the number of lamp off/on transitions, which shortens lamp life, in view of overall energy usage and lamp usage.

Abstract: A replacement light fixture for directing light emitted from a light source toward an area to be illuminated, including a base member upon with the light source is positioned and a reflector assembly detachably secured to a first and second mounting brackets that are mounted to a portion of the preexisting light fixture housing such that a lens portion of the reflector assembly overlies the light source and such that substantially all of the light emitted from the light source passes through the lens portion.

Abstract: The present invention relates to a reflector assembly for a luminaire where the reflector assembly comprises an anti-static member disposed between a lamp of the luminaire and a reflector body. In various aspects the anti-static member may be glass, plastic or other transparent or translucent materials and the reflector may be substantially sealed from the atmosphere by the anti-static member or the anti-static member in cooperation with a cover of the reflector assembly.

Abstract: In a light emitting diode arrangement for lighting purposes, comprising a circuit board with at least one light generating semiconductor element disposed on the circuit board and conductors extending on the circuit board to the semiconductor element and being electrically connected to terminals of the semiconductor element, a light transmissive element is disposed on the circuit board and covers the semiconductor element and a flame resistant cover element is disposed below the light transmissive element and on top of the terminals to cover the terminals to provide for electrical and flame insulation thereof.

Abstract: Solid state light emitting devices and/or solid state lighting devices use three or more phosphors excited by energy from a solid state source. The phosphors are selected and included in proportions such that the visible light output of such a device exhibits a radiation spectrum that approximates a black body radiation spectrum for the rated color temperature for the device, over at least a predetermined portion of the visible light spectrum.

Abstract: Light fixtures comprising an organic light emitting diode (OLED) as the light source, and further comprising a housing, at least one hollow, and an optic. The at least one hollow defines an intended area where light is emitted, and includes a reflective surface to reflect light within the intended area. The optic comprises a refractive portion that is defined by two edges. In one embodiment, the OLED is coupled to the two edges of the optic. In another embodiment, the OLED is coupled to and contacts an inner surface of the refractive portion. In either embodiment, the OLED is either sufficiently close to or contacting the refractive portion such that surface area of emitted light is maximized. Additionally, the OLED is placed sufficiently close to (or within) the intended area that reflected light and optical efficiency are maximized.

Abstract: A low-profile light fixture includes at least one lighting module comprising a frame having a top portion, one or more wall portions, a mounting portion, at least one LED mounted to the mounting portion, and a shield positioned below the mounting portion for shielding the light emitting portion of each LED from direct view. The frame optionally includes one or more dividers for dividing light from the LEDs into discrete sections of the frame. The frame and shield include a reflective material for reflecting light from the LEDs into the space to be illuminated. The light fixture can be configured so that it can be retrofitted into existing lighting fixtures.

Abstract: An emergency alert system with the capability of providing audible alerts upon the detection of a possible emergency condition or a malfunctioning system component is provided. An audible alert may include voice phrases that are selected and output based, at least in part, on information associated with the possible emergency condition or malfunctioning system component. The noise in an area may be received and the volume of the outputted voice phrase may be changed based, at least in part, on the noise in the area.

Abstract: Disclosed exemplary solid state light fixtures use optical cavities to combine or integrate light from LEDs or the like. In such a fixture, the cavity is formed by a light transmissive structure having a volume, and a diffuse reflector that covers a contoured portion of the structure. A heat sink member supports a flexible circuit board so as to position the light emitters to couple light to the transmissive structure and provide effective heat dissipation. The circuit board has flexible tabs mounting the emitters. When installed in the fixture, the tabs bend and the emitters press against a sufficiently rigid periphery of the light transmissive structure. TIM may be compressed between the heat sink member and the opposite surface of each tab. Heat conductive surface pads and heat conductors through vias through the tabs conduct heat from the emitters to the heat sink member, e.g. through the TIM.

Abstract: Embodiments of this invention provide a secondary, or back-up, lighting system for light fixtures having a primary light source. The back-up lighting system is configured to mount onto a support structure of the light fixture. The back-up lighting system includes a light source and a lens with optical properties. A housing retains the light source and lens. The back-up lighting system may include a controller that monitors the main power source for the primary light source of the light fixture. The controller activates the light source of the back-up lighting system upon detecting power restoration after a power loss. In some embodiments of this invention, the back-up lighting system includes a secondary power source that powers the back-up lighting system during a loss of power.

Abstract: An exemplary general lighting fixture includes an assembly forming an optical integrating volume for receiving and optically integrating light from one or more solid state light emitters and for emitting integrated light. The assembly includes a reflector having a diffusely reflective interior surface defining a substantial portion of a perimeter of the integrating volume. A light transmissive solid fills at least a substantial portion of the optical integrating volume. A light emitter interface region of the solid, for each solid state light emitter, closely conforms to the light emitting region of the respective emitter. A surface of the transmissive solid conforms closely to and is in proximity with the interior surface of the reflector. The transmissive solid also provides a light emission surface, at least a portion of which forms a transmissive optical passage for emission of integrated light, from the volume, in a direction facilitating a general lighting application.

Abstract: A lighting apparatus includes a source of light of a first spectral characteristic, a reflector or a diffusely reflective chamber or cavity having a transmissive optical passage, and a liquid containing quantum dots. The quantum dots provide a wavelength shift of at least some light emitted by the source of light to produce a desired second spectral characteristic in the light output.

Abstract: A network operation center for a light management system having networked intelligent luminaire managers. A plurality of networked luminaire managers, each collocated with a respective luminaire, monitor the status of their respective luminaires. The luminaire managers include transmitters for transmitting status information about their respective luminaires and third-party devices to a network server. The network server forwards the received status information from the networked luminaire managers to a computer of an owner/operator of the plurality of luminaires and/or a third-party user. The luminaire managers communicate with each other, whereby they form a network.

Abstract: Collimators and methods of making collimators. According to certain embodiments a collimator may be used with a light source, where the light source emits light along a light source axis. The base of the collimator may be angled such that the collimator refracts the light in a direction that is angled relative to the light source axis. There may also be provided methods for making a collimator. According to one method, a mold is first provided that produces an uncut collimator having an extended portion. The uncut collimator may be cut at an angle to produce a collimator with an angled base. In another method, there may be a mold with a base cavity, and a wedge may be inserted in the base cavity. The wedge forms a collimator with an angled base.