A light collection system includes at least one light source, a light
tunnel having reflective walls and a collimating plate at the light
output end of the tunnel. The collimating plate includes an optical
element array. The element array receives the light emitted from the
light source and outputs part of the light at a desired cone angle and
reflects the remainder back into the tunnel toward the light source. The
light is "recycled" in the tunnel until the light either exits the
collection system through the collimating plate or gets absorbed within
the collection system.