Focusing color LED emitter
AssigneeBEGA Gantenbrink-Leuchten KG
InventorHeiko Römelt
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Abstract
In a color-selectively dimmable and focusing LED emitter comprising a plurality of different-colored LEDs arranged, on a support element, as a plurality of similar LED tuples, each of the LED tuples comprising at least two different-colored LEDs, each LED tuple having assigned thereto a separate reflector, and each of the LED tuples being rotated about the optical axis of the associated reflector relative to a neighboring LED tuple. Improved color mixing is achieved together with high efficiency and good focusing in that the LED-emitter comprises more than four LED tuples and each of the LED tuples is rotated about the optical axis of the associated reflector relative to a preceding neighboring LED tuple by a respective angle φ, the angle φ being calculated as 360° divided by the number of the LED tuples.
Claims9
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.
Dependencies are inferred from the claim text.