LED LIGHTING FIXTURE HAVING MULTIPLE LED CLUSTERS WITH RELATIVE ANGULAR DISPLACEMENT (ROTATION)
A light-emitting diode (LED) lighting fixture includes a substrate and a plurality of LED clusters disposed on the substrate in a plane in which two orthogonal axes defining a two-dimension coordinate system is disposed. At least two of the LED clusters have orientations which are relatively angularly displaced within the two-dimensional coordinate system.
1 . A light-emitting diode (LED) lighting fixture, comprising:
a substrate;
a plurality of LED clusters disposed on the substrate in a plane in which two orthogonal axes defining a two-dimension system is disposed, at least two of the LED clusters having orientations which are relatively angularly displaced within the two-dimensional coordinate system.
2 . The LED lighting fixture of claim 1 , wherein the substrate is a LED circuit board.
3 . The LED lighting fixture of claim 1 , wherein the at least two LED clusters are angularly displaced by an angle of 180 degrees.
4 . The LED lighting fixture of claim 1 , wherein the at least two LED clusters are angularly displaced by an angle of 60 degrees.
5 . The LED lighting fixture of claim 1 , wherein the at least two LED clusters include multiple LEDs of respective multiple different colors.
6 . The LED lighting fixture of claim 5 , further comprising at least one optical element receiving light from the multiple LEDs and affecting the light to effect color mixing of the light from the multiple LEDs.
7 . The LED lighting fixture of claim 6 , wherein the at least one optical element comprises a collimator.
8 . The LED lighting fixture of claim 6 , wherein the at least one optical element comprises a diffuser.
9 . The LED lighting fixture of claim 1 , further comprising a second plurality of LED clusters disposed on a second substrate being substantially coplanar with the first substrate, the first and second substrates being relatively angularly displaced within the two-dimensional coordinate system, such that the LED clusters are relatively angularly displaced within the two-dimensional coordinate system.
10 . The LED lighting fixture of claim 1 , wherein the at least two LED clusters are quad LED clusters which include four LEDs of four respective different colors.
11 . The LED lighting fixture of claim 10 , wherein the four LEDs include a red LED, a green LED, a blue LED, and a white LED.