a concentrated photovoltaic module includes a cpv cell mounted on a support surface . a primary optical element is a square fresnel lens fixed in position over the cpv cell . a secondary optical element is optically coupled to the cell for providing uniform light over the surface of the cell . the soe has a square , sloping top portion and a truncated pyramid shaped bottom portion that tapers toward the cell . the top portion is formed of angled flat square rings that refract light entering the top portion from the poe . the bottom portion mixes the light using tir . the soe has an angled middle portion , and an integral support structure having one end attached to the middle portion surrounds the bottom portion and is attached to the cell support surface so there is little mechanical stress on the cell .