Optisches Beleuchtungssystem und Projektor, bei dem dieses verwendet wird

摘要

An illumination system (100) comprising a light source (22); a first lens array (40) of small lenses (42) for dividing light from the light source into a plurality of light beams; and a second lens array (50) of small lenses (52) corresponding to the small lenses of the first lens array. The second lens array is located near where the plurality of light beams from the first lens array are converged. Each small lens of the second lens array has an outer shape of a non-rectangular polygon which is related to a profile of the light converged by a corresponding small lens of the first lens array. The second lens array may have a flat portion (154) provided between the columns of the small lenses.