RF-optical metamaterials with figures-of-merit of interest are constructed from coupled magnetic and dielectric multi-resonant multi-disks or multi-sphere lattices arranged in a periodic or a random fashion to offer tailored magnetic and electric dipole moments. The simulated movement of each virtual continuous light source through a captured scene can be created using a stationary array of discrete light sources, and for which no physical movement of the array or the discrete light sources is required. During envelope tracking, the parallel amplifier regulates an envelope power supply voltage based on the parallel amplifier power supply signal. The device comprises a processing module for providing control data for the laser system on the basis of the operating data and taking into consideration the light propagation in the eye.