Patent ID: 8059230

Claim:
An illuminator assembly comprising: a plurality of light emitting diode (LED) chips arranged in an array and capable of emitting light; and a plurality of reflective pyramids arranged in an array complementary to the array of LED chips, wherein each LED chip is arranged among a plurality of the plurality of reflective pyramids and each reflective pyramid is arranged among a plurality of the plurality of LED chips, each reflective pyramid comprises a base with a geometric shape of at least three sides and at least three sloping reflective surfaces that extend from the at least three sides of the base, respectively, the at least three sloping reflective surfaces each extend up from the corresponding side of the base and narrow in width such that the at least three sloping reflective surfaces converge at a top of the reflective pyramid, and each reflective pyramid is ringed by at least three LED chips with each sloping reflective surface of the reflective pyramid opposite to a corresponding LED chip of the at least three LED chips, the reflective surfaces being inclined to the LED chips and thereby capable of reflecting at least some of the light beams emitted from the LED chips such that the reflected light beams propagate in directions that are closer to a direction normal to the arrays than the directions of said some of the light beams prior to their reflection.