A solar concentrator having a concentrator element for collecting input light, a redirecting component with a plurality of incremental steps for receiving the light and also for redirecting the light, and a waveguide including a plurality of incremental portions enabling collection and concentration...http://www.google.com/patents/US7664350?utm_source=gb-gplus-sharePatent US7664350 - Compact optics for concentration, aggregation and illumination of light energy
