Importance

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Abstract

A photovoltaic solar-light concentration apparatus comprises a focusing layer having a plurality of focusing elements disposed adjacent to each other. A waveguide optically coupled and separated from the focusing layer has an exit surface and a plurality of deflecting elements. Each of the deflecting elements receives a band shaped solar-light beam from a corresponding focusing element. The deflecting elements are shaped and disposed so as to deflect and trap the solar-light beams inside the waveguide at an angle that insures total internal reflection. This concentrated solar-light is conveyed along a main direction perpendicular to the exit surface towards a single or multi junction photovoltaic cell coupled to the waveguide via a secondary optical element. The multi junction PV cell is customized to respond to the spectral light emerging from the waveguide as changed by the partial absorption through the optics that is molded of a plastic resin.

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First Claim