INHOMOGENEOUS MICROLENS DEVICE FOR NEAR-FIELD FOCUSING, BEAM FORMING, AND HIGH-EFFICIENCY FAR-FIELD DEVICE IMPLEMENTATION

摘要

The disclosure relates to an optically-transparent device (100) comprising a main part (10) of dielectric material having a refractive index n₂. Such an optically-transparent device is configured for forming a field intensity distribution in a near zone of said device, from electromagnetic waves incidentally illuminating said device, when said device is embedded in a dielectric material having a refractive index n₁ lower than said refractive index n₂. Said device (100) further comprises at least one insert (11) of dielectric material having a refractive index n₃ lower than said refractive index n₂ and different from said refractive index n₁, said at least one insert being inserted into said main part. The disclosure also relates to a system comprising a plurality of above-described optically-transparent devices uniformly distributed within a dielectric host medium, so as to form a far-field device for far-field applications.