Light collection system for an LED array

An automated luminaire, comprising:

• an LED light engine;
• an optical system optically coupled to the LED light engine;
• and
• a controller electrically coupled to the LED light engine and to a data link and configured to control physical and electrical functions of the LED light engine in response to control signals received via the data link,
• wherein the LED light engine comprises:
• a plurality of LED emitters;
• a first lens array comprising a first plurality of collimating lenslets, wherein each lenslet corresponds to only one of the plurality of LED emitters, wherein the first lens array is optically coupled to the plurality of LED emitters and configured to emit a plurality of light beams corresponding to the plurality of LED emitters, each of the plurality of light beams comprising partially collimated light rays;
• a light integrator optic configured to receive the plurality of light beams and to internally reflect the light beams to generate a plurality of at least partially-homogenized light beams;
• a homogenizer optically coupled to the light integrator optic and configured to receive the plurality of at least partially-homogenized light beams from the light integrator optic;
• and
• a converging lens optically coupled to the homogenizer, wherein the homogenizer and the converging lens are configured to illuminate a gate with the plurality of light beams received from the light integrator optic.

A light-emitting diode (LED) light engine, comprising:

• a plurality of LED emitters;
• a first lens array comprising a first plurality of collimating lenslets corresponding to the plurality of LED emitters, wherein the first lens array is optically coupled to the plurality of LED emitters;
• a second lens array comprising a second plurality of collimating lenslets corresponding to the first plurality of collimating lenslets, wherein the second lens array is optically coupled to the first lens array, and wherein the first and second lens arrays are configured to emit a plurality of light beams corresponding to the plurality of LED emitters, each of the plurality of light beams comprising partially collimated light rays;
• a light integrator optic configured to receive the plurality of light beams and to internally reflect the light beams to generate a plurality of at least partially-homogenized light beams, wherein sides of the light integrator optic are essentially parallel and an entry port of the light integrator optic is of a same size as an exit port of the light integrator optic;
• a third lens array comprising a first plurality of converging lenslets optically coupled to the light integrator optic and configured to receive the plurality of at least partially-homogenized light beams from the light integrator optic;
• a fourth lens array comprising a second plurality of converging lenslets optically coupled to the second lens array;
• and
• a converging lens optically coupled to the fourth lens array, wherein the third and fourth lens arrays and the converging lens are configured to illuminate a gate with the plurality of light beams received from the light integrator optic.