Led luminaire for generating substantially uniform illumination on a target plane

A luminaire comprising:

• a substantially planar PCB;
• a first set of LEDs mounted on the PCB along an arc of a first circle having a radius r1;
• a second set of LEDs mounted on the PCB along an arc of a second circle having a radius r2, wherein r1>r2 and the first circle is concentric with the second circle about a center point;
• and
• at least one reflector fixed with respect to the PCB and including a first reflective surface cooperating with each of the first set of LEDs and a second reflective surface cooperating with each of the second set of LEDs, each of the reflective surfaces being a surface of revolution with respect to an axis intersecting the center point and normal to the PCB.

A luminaire comprising:

• a first set of LEDs;
• a first reflective surface cooperating with the first set of LEDs to direct light from the first set of LEDs to form a first generally annular beam pattern on a target plane, wherein a peak of luminous intensity of light from the first set of LEDs is at a first angle of incidence;
• a second set of LEDs;
• and
• a second reflective surface cooperating with the second set of LEDs to direct light from the second set of LEDs to form a second generally annular beam pattern on the target plane, wherein a peak of luminous intensity of light from the second set of LEDs is at a second angle of incidence, wherein the first angle of incidence is greater than the second angle of incidence and the second angle of incidence is a function of overlap of the first generally annular beam pattern on the second annular beam pattern and a height at which the LEDs reside over the target plane to generate a combined beam pattern including the first generally annular beam pattern and the second generally annular beam pattern having a generally uniform illumination across at least a majority of the combined beam pattern on the target plane.

A luminaire for generating substantially uniform illumination on a target surface in a predetermined pattern comprising:

• a mounting surface;
• a central array of LEDs disposed on the mounting surface, the central array comprising a plurality of LEDs and at least one optic configured to generated a first beam pattern on the target surface;
• a plurality of peripheral arrays of LEDs disposed on the mounting surface around the central array, each peripheral array comprising a plurality of LEDs and at least one optic configured to generated a second beam pattern on the target surface;
• wherein a combination of the first beam pattern and the second beam pattern form the predetermined pattern.