"Spherical media and geodesic lenses in geometrical optics"@en . . . . "2"^^ . "170421" . . "geodesic lens; focusing; Luneburg problem; absolute instrument"@en . . "10.1088/2040-8978/14/7/075705" . "[688E19C91D26]" . "P(GBP201/12/G028), S" . "Tyc, Tom\u00E1\u0161" . "2"^^ . . "2040-8978" . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . . "14" . "RIV/00216224:14310/12:00057540!RIV13-GA0-14310___" . "Journal of Optics" . . . . . "Spherical media and geodesic lenses in geometrical optics" . "\u0160arbort, Martin" . . "7" . "Spherical media and geodesic lenses in geometrical optics"@en . "This paper presents a general approach to solving the problems of inverse scattering in three-dimensional isotropic media with a spherically symmetric refractive index distribution. It is based on equivalence of the central section of an inhomogeneous medium and corresponding geodesic lens, which is a non-Euclidean surface with constant refractive index. We use this approach for solving the Luneburg inverse problem and also for the derivation and design of absolute instruments that provide perfect imaging within the frame of geometrical optics. In addition, we solve the generalized Luneburg inverse problem, which leads to the discovery of a new class of magnifying lenses." . "RIV/00216224:14310/12:00057540" . . . "000306272400019" . . "This paper presents a general approach to solving the problems of inverse scattering in three-dimensional isotropic media with a spherically symmetric refractive index distribution. It is based on equivalence of the central section of an inhomogeneous medium and corresponding geodesic lens, which is a non-Euclidean surface with constant refractive index. We use this approach for solving the Luneburg inverse problem and also for the derivation and design of absolute instruments that provide perfect imaging within the frame of geometrical optics. In addition, we solve the generalized Luneburg inverse problem, which leads to the discovery of a new class of magnifying lenses."@en . . . "Spherical media and geodesic lenses in geometrical optics" . . "14310" . . "11"^^ .