On conformal lenses

Abstract

Plane mirror can make one object into two for observers on the object's side. Yet, there seems no way to achieve the same effect for observers from all directions. In this letter, we will design a new class of gradient index lenses from multivalued optical conformal mapping. We shall call them the conformal lenses. Such lenses can transform one source into two (or even many) omnidirectionally. Like the overlapped illusion optics does, they can even transform multiple sources into one. Rather than using negative index materials, implementation here only needs isotropic positive index materials like other gradient index lenses. One obvious drawback however, is that they have singular permittivity values which restrict them to functioning at one single frequency. This however, needs not be the case when applying transmutation methods, which enable the lenses to work in a broadband frequency range.

Manuscript - 9 pages Supplementary Information - 3 pages

References in corpus (7)

• Hiding Under the Carpet: a New Strategy for Cloaking
• Illusion optics: The optical transformation of an object into another object
• Silicon nanostructure cloak operating at optical frequencies
• Transformation media that rotate electromagnetic fields
• Plasmonic Luneburg and Eaton Lenses
• An omnidirectional retroreflector based on the transmutation of dielectric singularities
• Partial Transmutation of Singularities in Optical Instruments