Current advances in metalenses are leading to the development of new compact optical systems,
mainly in imaging applications. Here, we focus the study of metalenses in nonimaging optics
applications. In this work we present the study and design of a total internal reflection (TIR)
metalens by using finite difference time domain (FDTD) electromagnetic simulations. The TIR
metalens is configured by both a metalens and a metamirror on a transparent plate, and as source
a light emitting diode (LED) is used. We make an analysis of the efficiency of the proposed
configuration by using FDTD simulations.
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