| 摘要 |
A solar concentrator (10) having a housing (12) that supports at least one photovoltaic cell therein. A heat sink underlies the photovoltaic cell and a transparent cover, preferably glass, protects the surface of the cell. Positive and negative contacts are operatively connected to the cell to transmit the electrical energy generated thereby. A primary optical concentrator (22) is provided in the form of a Fresnel lens. The Fresnel lens has a central facet and a plurality of adjacent facets of varying widths, the width of each successive adjacent facet decreasing in the direction away from the central facet. The radius of curvature of each successive adjacent facet increases in the direction away from the central facet. All of the facets have a peak of the same height and a valley of the same height. |
