JUAN P. FERRER-RODRÍGUEZ, EDUARDO F. FERNÁNDEZFLORENCIA ALMONACID, PEDRO PÉREZ-HIGUERAS2025-01-222025-01-222016-05-01Ferrer-Rodríguez, J. P., Fernández, E. F., Almonacid, F., & Pérez-Higueras, P. (2016). Optical design of a 4-off-axis-unit Cassegrain ultra-high concentrator photovoltaics module with a central receiver. Optics Letters, 41(9), 1985-1988. https://doi.org/10.1364/OL.41.0019851539-4794, 0146-959210.1364/OL.41.001985https://hdl.handle.net/10953/4269Ultra-High Concentrator Photovoltaics, UHCPV, with concentrations higher than 1000 suns, has been pointed by different authors to have a great potential for being a cost-effective PV technology. This Letter presents a UHCPV Cassegrain-based optical design in which the sunrays are concentrated and sent from four different and independent paraboloid-hyperboloid pairs optical units onto a single central receiver. The optical design proposed has as main advantage the achievement of ultra-high concentration ratios, using relative small mirrors, with similar performance values of efficiency, acceptance angle and irradiance uniformity than other designs.engCC0 1.0 Universalhttp://creativecommons.org/publicdomain/zero/1.0/Geometric optical designSolar energyConcentratorsNonimaging opticsPhotovoltaicinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess