Efficiency of fresnel lenses

Pramod Kumar Gupta

Applied Energy, 1981, vol. 9, issue 3, 173-183

Abstract: This paper discusses the efficiency of Fresnel lenses with respect to optical (reflection and transmission) losses. The efficiencies of lenses of different step widths--i.e. 2, 3, 4 and 5 mm--are the same (91·9%) in the case of reflection losses and the maximum efficiency of a lens of 5 mm step width is 95·8% with respect to transmission losses.

Date: 1981
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