Abstract: An LED-based light can be installed in a conventional light fixture. The LED-based light can include a sensor operable to output a signal indicative of whether an area of one or more of the rooms is in an occupied state or a non-occupied state, and the LED-based light can also include an LED controller operable to control at least one LED in the light in response to the signal. Additionally, the LED-based light can include a transmitter operable to output the signal indicative of whether the area is in the occupied state or the non-occupied state to a building environment regulator.

Abstract: An LED-based replacement light comprises multiple LEDs, the LEDs having different logical control addresses associated among them, with each logical control address subjecting one or more of the LEDs associated therewith to individual control; a controller in communication with the LEDs, the controller configured to generate signals that individually control the operating states of the one or more LEDs associated with each logical control address; a housing for the LEDs; and a connector disposed at an end of the housing, the connector shaped for connection with a light socket.

Abstract: An LED-based replacement light includes a plurality of LEDs, an LED controller for operating the LEDs, a user input interface in communication with the LED controller, a housing for the LEDs, the LED controller and the user input interface, and a connector disposed at an end of the housing and shaped for connection with a light socket. The LED controller establishes different operating states for the LEDs that include only a limited number of discrete ON states. The user input interface is configured to receive user input, and in response to the user input, activate the LED controller to operate the LEDs according to one of the different operating states.

Abstract: A replacement light tube for replacing a fluorescent light tube includes a bulb portion extending between a first end and a second end, the bulb portion comprising a support structure, a plurality of white light emitting diodes (LEDs) and an elongate light-transmissive cover. The support structure has a first surface extending between the first end and the second end. The plurality of LEDs are supported by the first surface and arranged between the first end and the second end. The elongate light-transmissive cover extends between the first end and the second end and over the first surface of the support structure. A first end cap and a second end cap are disposed on the first end and the second end, respectively, each configured to fit with a socket for a fluorescent light tube. A power supply circuit is configured to provide power to the plurality of LEDs.

Abstract: An LED-based light includes one or more LEDs, a sensor arranged to detect a brightness level in an area resulting from the combination of light emitted by the LEDs with light from at least one ambient light source other than the LEDs, and operable to output a signal corresponding to the detected brightness level, a controller operable to regulate an amount of power provided to the LEDs in response to the signal, a light transmitting housing for the LEDs, the sensor and the controller and a connector shaped for connection with a light socket disposed at an end of the housing.

Abstract: An LED based light for replacing an incandescent bulb comprises a base having a first end and a second end; a connector fixed to the first end of the base, the connector adapted to physically connect to an incandescent light fixture; an open-ended light structure extending from the second end of the base, the light structure having an inner surface defining a cavity in fluid communication with an ambient environment and an opposing exterior outer surface; at least one LED arranged outward from the inner surface; and a heat dissipating structure for the at least one LED extending into the cavity.

Abstract: A light for use in a light fixture includes a light source adapted to produce light in an area including the light and a connector configured for connection to the fixture. The light further includes a communication apparatus configured to generate one or more signals indicative of a presence of a person in the area, and a controller that is operative to control the light source in a normal mode in response to the one or more signals.

Abstract: An LED-based light assembly includes a plurality of LEDs and an elongate housing for the LEDs. The housing has an outer surface at least partially defined by a first lens. The assembly also includes a second lens. The second lens is removably attachable to the outer surface of the housing such that at least a portion of the second lens overlays the first lens in a spaced relationship. The assembly further includes at least one connector arranged at an end of the housing that configured for engagement with a socket of a fluorescent light fixture.

Abstract: In one aspect of an embodiment for controlling operation of a light source, a method of associating a light source with an area for which the light source is positioned to provide lighting comprises: identifying, based on a determined physical position of a light source, one of a plurality of areas as the area for which the light source is positioned to provide lighting; identifying at least one desired lighting condition for the identified area; and controlling, using a processor, operation of the light source based on the identified at least one desired lighting condition for the identified area.

Abstract: An LED-based replacement light for a fluorescent light includes a plurality of LEDs and an elongate housing for the LEDs. The housing is defined at least in part by a lens and has a cross sectional profile that partially falls along a cross sectional profile of a fluorescent light that the LED-based light is designed to replace. In addition, at least a portion of the lens extends beyond the cross sectional profile of the fluorescent light. The LED-based light also includes at least one connector arranged at an end of the housing that is configured for engagement with a socket of a fluorescent light fixture.

Abstract: A replacement light tube for replacing a fluorescent light tube includes an elongate tubular housing having first and second ends, first and second end caps disposed thereon, each configured to fit with a socket for the fluorescent light tube, and a rigid support structure having a planar portion having a first surface extending within the elongate tubular housing between the first and second ends and having spaced-apart sidewalls extending away from the first surface and extending within the housing between the first and second ends. At least a portion of the sidewalls are in contact with an interior surface of housing. A plurality of white light emitting diodes are supported only by a second surface of the planar portion opposite to the first surface and between the first and second ends, and are arranged to emit light through the housing.

Abstract: An LED-based light configured for replacing a conventional fluorescent light in a fluorescent light fixture comprises: an LED circuit board including at least one LED; a power supply circuit board configured to supply power to the at least one LED; an end cap carrying at least one pin configured for connection to the fixture; a pin connector header including a first body retentively supporting at least one pin connecting lead and configured to engage the power supply circuit board such that the pin connecting lead is positioned to electrically connect the power supply circuit board and the pin; and a circuit connector header including a second body retentively supporting at least one circuit connecting lead and configured to engage the power supply circuit board such that the circuit connecting lead is positioned to electrically connect the power supply circuit board and the LED circuit board.

Abstract: An LED-based light for replacing a fluorescent light in a light fixture comprises: an elongate housing, the housing having a first longitudinal portion with a first cross section and a second longitudinal portion adjoining the first longitudinal portion with a second cross section, wherein a shape of the first cross section is different from a shape of the second cross section, such that the housing includes at least one geometric asymmetry; at least one LED arranged in the housing; and a connector at and end of the housing configured for connection to a light fixture.

Abstract: An LED-based light can be installed in a conventional light fixture. The LED-based light can include a sensor operable to output a first signal indicative of whether an area of one or more of the rooms is in an occupied state or a non-occupied state, and the LED-based light can also include an LED controller operable to control at least one LED in the light in response to the first signal. Additionally, the LED-based light can include a transmitter operable to output a second signal indicative of whether the area is in the occupied state or the non-occupied state to a building environment regulator.

Abstract: An LED-based light for replacing a conventional fluorescent light in an existing fixture is disclosed. The LED-based light includes an elongated housing, a heat sink extending substantially the length of the housing and having at least one integral retaining portion and a circuit board positioned on the heat sink and having a plurality of LEDs mounted thereon, wherein the at least one integral retaining portion is configured to secure the circuit board to the heat sink.

Abstract: Disclosed herein are embodiments of LED-based lights for use in fluorescent fixtures that emanate light in a plurality of directions. One embodiment disclosed herein of an LED light for use in a fluorescent light fixture comprises a housing and a circuit board having a first surface configured to face an illumination area, the circuit board mounted in the housing and defining a plane conceptually dividing the housing into a first portion and a second portion. At least one LED is mounted on the first surface of the circuit board and is configured to emanate light in a first direction. Light distribution means is configured to distribute a portion of the light emanated in the first direction to at least a second direction different than the first direction.

Abstract: An LED based light comprises at least one LED; and at least one thermoelectric generator having a first side and a second side, wherein the first side is thermally coupled to the at least one LED such that heat generated by the at least one LED is passively conducted to the at least one thermoelectric generator, producing a temperature differential between the first side and second side, wherein the at least one thermoelectric generator is configured to produce electrical energy from the temperature differential.