Journal
OPTICS EXPRESS
Volume 19, Issue 10, Pages A280-A294Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.00A280
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- Ministry of the Walloon Region (DGTRE) [850552]
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The linear chromatic aberration (LCA) of several combinations of polycarbonates (PCs) and poly (methyl methacrylates) (PMMAs) as singlet, hybrid (refractive/diffractive) lenses and doublets operating with wavelengths between 380 and 1600 nm - corresponding to a typical zone of interest of concentrated photovoltaics (CPV) - are compared. Those comparisons show that the maximum theoretical concentration factor for singlets is limited to about 1000 x at normal incidence and that hybrid lenses and refractive doublets present a smaller LCA increasing the concentration factor up to 5000 x and 2 x 10(6) respectively. A new achromatization equation more useful than the Abbe equation is also presented. Finally we determined the ideal position of the focal point as a function of the LCA and the geometric concentration which maximizes the flux on the solar cell. (C) 2011 Optical Society of America.
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