Patent ID: 8282244
Filing Date: 2012-10-09
Classification: F21K,F21S,F21Y

Abstract:
1. A focusing light emitting diode (LED) emitter, comprising: more than four similar LED tuples arranged along a spiral path on a support element, each LED tuple having at least two different-colored LEDs, and a plurality of reflectors, each reflector having an optical axis, wherein each of the LED tuples is assigned a separate reflector of the plurality of reflectors, wherein each successive LED tuple along the spiral path of more than four similar LED tuples is rotated about the optical axis of the associated reflector by an angle φ relative to a rotational position of a preceding neighboring LED tuple about the optical axis of the associated reflector of the preceding neighboring LED tuple along the spiral path, the angle φ being calculated as 360° divided by the number of the LED tuples, and wherein the LED emitter is dimmable in a color-selective way.