Solar energy module and fresnel lens for use in same

摘要: A solar concentrator having a housing that supports at least one photovoltaic cell therein. heat sink underlies the and transparent cover, preferably glass, protects surface of cell. Positive negative contacts are operatively connected to transmit electrical energy generated thereby. primary optical is provided in form Fresnel lens. The lens has central facet plurality adjacent facets varying widths, width each successive decreasing direction away from facet. radius curvature increases All have peak same height valley height. predetermined focal distance supported within range less than distance.