title: Design of an efficient Fresnel-type lens utilizing double total internal reflection for solar energy collection.
abstract: A novel of Fresnel-type lens for use as a solar collector has been designed which utilizes double total internal reflection (D-TIR) to optimize collection efficiency for high numerical aperture lenses (in the region of 0.3 to 0.6 NA). Results show that, depending on the numerical aperture and the size of the receiver, a collection efficiency theoretical improvement on the order of 20% can be expected with this new design compared with that of a conventional Fresnel lens.
authors: AIDO, Instituto Tecnológico de Óptica, Color e Imagen, C/ Nicolás Copérnico, 7-13, Parque Tecnológico, 46980, Paterna, Valencia, Spain. iwallhead@aido.es
authors: Ian
authors: I
authors: Wallhead
authors: Teresa Molina
authors: TM
authors: Jiménez
authors: Jose Vicente García
authors: JV
authors: Ortiz
authors: Ignacio Gonzalez
authors: IG
authors: Toledo
authors: Cristóbal Gonzalez
authors: CG
authors: Toledo