LED lamp with reflector and multicolor adjuster
AssigneeRensselaer Polytechnic Institute (RPI)
InventorsKathryn M. Conway, Yutao Zhou
Life of this patent
Estimating the term…
Abstract
A lighting device has a support that can be screwed into a standard 120 volt light socket. A ring with multiple, alternating color, circumferentially spaced LEDs, is connected to the support and a reflector is provided over the ring for reflecting light from the LEDs past the ring. A power supply circuit is connected to the LEDs for powering the LEDs to emit light. The light can be white if the LEDs are a combination of red, blue and green or other white-forming combinations, or the power circuit can selectively power subsets of the LEDs to produce and desired color. The same circuit can be used to vary the intensity of the light in the manner of a dimmer.
Claims19
A lighting device comprising:
- a support with socket means for providing electrical power to the device;
- a channel which is open toward the support;
- a row of LEDs connected to the support, the row of LEDs comprising LEDs of at least two different colors, the LEDs being spaced from each other and recessed in and along the channel so that the LEDs are concealed from direct view in the channel and emit light toward the support;
- a reflector connected between the support and the channel and positioned for reflecting light from the LEDs in the row, the reflector having a textured surface and being curved in at least one plane which extends between the channel and the support so that light from the LEDs is mixed by the reflector and reflected past the row and out of the device;
- and
- a power supply circuit connected between the LEDs and the socket means for powering the LEDs to emit light.
Dependencies are inferred from the claim text.