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Optics Express|November 3, 2017
Simultaneous multiple surface design method for diffractive surfacesJoão Mendes-Lopes, Pablo Benítez, Juan C Miñano, et al.
Optics Express|July 1, 2014
9-fold Fresnel-Köhler concentrator with Fresnel lens of variable focal pointJoão Mendes-Lopes, Pablo Benítez, Pablo Zamora, et al.
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