Free-form optics for Fresnel-lens-based photovoltaic concentrators

Descripción (resumen): 

The Concentrated Photovoltaics (CPV) promise relies upon the use of high-efficiency triple-junction solar cells (with proven efficiencies of over 44%) and upon high-performance optics that allow for high concentration concurrent with relaxed manufacturing tolerances (all key elements for low-cost mass production). Additionally, uniform illumination is highly desirable for efficiency and reliability reasons. All of these features have to be achieved with inexpensive optics containing only a few (in general no more than 2) optical elements. In this paper we show that the degrees of freedom using free-forms allow the introduction of multiple functionalities required for CPV with just 2 optical elements, one of which is a Fresnel lens.

Tipo publicación: 
JRC-SCI Magazine
Publicado en: 
Optics Express  Sección: RENEWABLE ENERGY AND THE ENVIRONMENT (INVITATION ONLY) Vol 21, 3,  Pp.: A494–A502
Ingeniería óptica
Fecha de Publicacion: 
Mayo 2013
Autores CeDInt: 
Otros Autores: 
Rubén Mohedano