A method and system for producing a compact uniform illumination beam that does not have a positional blind spot. First, non-collimated light beams that have a positional blind spot are received from a light source. Next, the non-collimated light beams are converted into approximately collimated light...http://www.google.de/patents/US6829098?utm_source=gb-gplus-sharePatent US6829098 - Illumination optics and method
