Importance

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Abstract

An apparatus for generating electricity from solar energy has a large dish reflector with a fly's eye receiver positioned near the focus of the dish reflector, held by a dual axis tracking structure. The fly's eye receiver includes a field lens that concentrates sunlight into an image of the dish reflector, a two-dimensional fly's eye array of contiguous convex lenses extending across the dish image, and a photovoltaic cell behind each convex lens of the fly's eye array. Two imaging stages are provided. First, the dish reflector and the field lens concentrate the sunlight in the form of an image of the dish that is stabilized against pointing errors of the tracking mechanism. Second, the contiguous array of convex lenses divides the sunlight energy of the dish image into portions, one per convex lens, each portion being further concentrated by the respective convex lens onto a corresponding photovoltaic cell.

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First Claim