Optical imaging system based on transformation-optics lenses

摘要

Two transformation-optics inspired flat lenses are used to build up an optical system capable of transposing an area surrounding the object focal point in a magnified area surrounding the image focal point. The object and image focal points of the system are placed in the free space and in a dilated space, respectively, having sub-unitary relative permittivity and permeability. The anisotropic and inhomogeneous media constituting the lenses enable the processing of the high spatial frequencies without converting them in evanescent waves. Numerical simulations show the capability of the proposed device for performing magnified discernible images of the sub-wavelength details.