title: Unfolded aplanats for high-concentration photovoltaics.
abstract: The exigencies of high-concentration photovoltaics motivate optics that (1) obviate the need for optical bonds, (2) exhibit maximal optical tolerance, (3) are not damaged at off-axis orientation, and (4) allow convenient location of the solar cell and heat sink. We show that dual-mirror unfolded aplanats can satisfy all these criteria. Lens enhancement improves compactness and, with millimeter-scale cells, concentrator depth is only a few centimeters, amenable to precise large-volume fabrication.
authors.affiliation: Department of Solar Energy and Environmental Physics, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Israel. jeff@bgu.ac.il
authors.forename: Jeffrey M
authors.initials: JM
authors.lastname: Gordon
authors.forename: Daniel
authors.initials: D
authors.lastname: Feuermann
authors.forename: Pete
authors.initials: P
authors.lastname: Young