147217 20241216115435.0 doi 10.1364/OE.435266 sideral 125456 ART-2021-125456 eng Navarro, Rafael (orcid)0000-0002-1328-1716 GRINCU lens with conicoid iso-indicial surfaces: application for modeling the crystalline lens 2021 We introduce a new type of lens with two gradients of refractive index (GRIN) and of curvature (GRCU) of iso-indicial surfaces, i.e., GRINCU. The inner structure of the lens resembles that of an onion. Each layer is a meniscus lens with infinitesimal thickness, which coincides with an iso-indicial surface characterized by a conicoid shape and a constant refractive index. The internal distribution automatically adapts to the external geometry. Here, we consider the simplest case of a constant gradient of the curvature radius -G, which indicates a linear decrease as we move along the optical axis. The formulation of this type of lens is presented, including its generalization to nonrotationally symmetric conicoid surfaces. The formulation is then applied to model the crystalline lens; the code corresponding to the numerical computation of the 3D refractive index distribution as well as its gradient is provided as a supplementary file. Finally, we confirmed a refractive power increase of nearly 14% when G changes from 0 to 3. info:eu-repo/grantAgreement/ES/MICINN/PID2019-107058RB-I00 info:eu-repo/semantics/closedAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 3.833 2021 OPTICS 28 / 100 = 0.28 2021 Q2 T1 1.233 2021 Atomic and Molecular Physics, and Optics 2021 Q1 7.3 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Baquedano, Sergio Universidad de Zaragoza Sanchez-Cano, Ana I. Universidad de Zaragoza (orcid)0000-0002-5621-1937 5008 800 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Teoría Señal y Comunicac. 2002 647 Universidad de Zaragoza Dpto. Física Aplicada Área Óptica 29, 20 (2021), 30998-31009 Opt. express OPTICS EXPRESS 1094-4087 3283103 http://zaguan.unizar.es/record/147217/files/texto_completo.pdf Versión publicada 2495521 http://zaguan.unizar.es/record/147217/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:147217 articulos driver 2024-12-16-11:27:29 ARTICLE