title: A broadband zone plate lens from transformation optics.
abstract: A zone plate lens utilizing a refractive instead of diffractive approach is presented for broadband operation. By utilizing transformation optics, we compress the conventional hyperbolic lens into a flat one with a few zone plates made of all-dielectric materials. Such a transformed lens maintains the broadband performance of the original lens, thus providing a superior alternative to the diffractive Fresnel element which is inherently narrow band.
authors.affiliation: School of Electronic Engineering and Computer Science, Queen Mary, University of London, London E1 4NS, UK.
authors.forename: Rui
authors.initials: R
authors.lastname: Yang
authors.forename: Wenxuan
authors.initials: W
authors.lastname: Tang
authors.forename: Yang
authors.initials: Y
authors.lastname: Hao
mesh_terms: D007909:Lenses; D008962:Models, Theoretical; D055095:Optics and Photonics / Q000295:instrumentation* / Q000379:methods*; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods*