Abstract: One example solid state lighting type lamp for a three-way luminaire includes a power source, a controller, an output stage, switching logic circuitry and multiple sets of light emitters. The logic circuitry receives input signals from tip and ring power contacts on a lamp base. The controller provides power from the power source to the output stage which is controlled by the switch logic circuitry to selectively apply power to different ones of the sets of light emitters responsive to the input signals. Each set of light emitters emit light having different color temperatures. In another three-way luminaire example, the control circuitry is configured to control drive current in a sequence to toggle the lamp consecutively between an OFF state and ON state in response to inputs from a three-way socket. Another type of lamp includes circuitry to permanently disable the lamp on detection of an end-of-life condition.

Abstract: A lamp includes a bulb; a light source such as an LED; a lamp base including a connector for providing electricity from a standard lamp socket; and a housing coupled to the lamp base and supporting the bulb in a position to receive electromagnetic energy from the light source. Circuitry connected to receive electricity from the connector of the lamp base provides drive current to the light source. In the examples, each of the lamps also includes a theft deterrence mechanism coupled to the lamp base configured to deter unauthorized removal of the lamp once the lamp base has been inserted into the standard lamp socket to enable lamp operation.

Abstract: A lamp includes a bulb; a light source such as an LED; a lamp base including a connector for providing electricity from a standard lamp socket; and a housing coupled to the lamp base and supporting the bulb in a position to receive electromagnetic energy from the light source. Circuitry connected to receive electricity from the connector of the lamp base provides drive current to the light source. In the examples, each of the lamps also includes a theft deterrence mechanism coupled to the lamp base configured to deter unauthorized removal of the lamp once the lamp base has been inserted into the standard lamp socket to enable lamp operation.

Abstract: One example solid state lighting type lamp for a three-way luminaire includes a power source, a controller, an output stage, switching logic circuitry and multiple sets of light emitters. The logic circuitry receives input signals from tip and ring power contacts on a lamp base. The controller provides power from the power source to the output stage which is controlled by the switch logic circuitry to selectively apply power to different ones of the sets of light emitters responsive to the input signals. Each set of light emitters emit light having different color temperatures. In another three-way luminaire example, the control circuitry is configured to control drive current in a sequence to toggle the lamp consecutively between an OFF state and ON state in response to inputs from a three-way socket. Another type of lamp includes circuitry to permanently disable the lamp on detection of an end-of-life condition.

Abstract: Drive circuitry drives a plurality of solid state light emitters coupled between a higher voltage node and a lower voltage node. The drive circuitry includes a switching regulator, such as a buck regulator, having a switch and an inductive element coupled between the switch and the lower voltage node to electrically connect the switch to the lower voltage node. A controller drives the switch in accordance with an output signal produced by the solid state light emitters. Input power supply circuitry supplies an input power supply signal for providing a voltage level at the higher voltage node to operate the solid state light emitters. The input power supply circuitry is configured for supplying the controller with a first power supply signal produced based on the input power supply signal.

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 circuit board has flexible tabs mounting the light emitters. A heat sink member supports the circuit board and is contoured relative to the shape of the light transmissive structure so that 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. Various contours/angles of the periphery of the light transmissive structure and the mating portion of the heat sink member may be used.

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: Drive circuitry drives a plurality of solid state light emitters coupled between a higher voltage node and a lower voltage node. The drive circuitry includes a switching regulator, such as a buck regulator, having a switch and an inductive element coupled between the switch and the lower voltage node to electrically connect the switch to the lower voltage node. A controller drives the switch in accordance with an output signal produced by the solid state light emitters. Input power supply circuitry supplies an input power supply signal for providing a voltage level at the higher voltage node to operate the solid state light emitters. The input power supply circuitry is configured for supplying the controller with a first power supply signal produced based on the input power supply signal.

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 circuit board has flexible tabs mounting the light emitters. A heat sink member supports the circuit board and is contoured relative to the shape of the light transmissive structure so that 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. Various contours/angles of the periphery of the light transmissive structure and the mating portion of the heat sink member may be used.

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: A solid state lighting system controls overall light output level in a step-wise manner by discretely controlling the ON/OFF state of its light emitters. Solid state emitters that are ON at a given time are set and kept at a level intended to produce a desired output characteristic, e.g. at a level to produce a described color of light. The system utilizes optical processing of the generated light, for example by diffuse reflection in an optical integrating cavity, sufficient to convert the point source output(s) from the emitting elements into a uniform virtual source output. The virtual source output appears uniform regardless of how many emitters are ON or OFF, and only the perceptible intensity of the light output changes with the number of emitters that the system has ON.