Open AccessStructure of microprismatic Fresnel lenses for creating uniform focal images
Author(s) -
Е. Е. Антонов,
Minglei Fu,
Viacheslav V. Petrov,
Dmytro Manko,
Kezhen Rong
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.438590
Subject(s) - optics , collimated light , fresnel lens , lens (geology) , focal length , fresnel zone , materials science , zone plate , fresnel number , fresnel zone antenna , focal point , simple lens , fresnel equations , concentrator , nonimaging optics , cylindrical lens , cardinal point , beam (structure) , light beam , laser beam quality , refractive index , laser , diffraction , laser beams , physics , computer science , telecommunications , smart antenna , dipole antenna , antenna (radio)
Flat Fresnel lenses are known to form a point image in the focal plane. However, several practical applications require transforming lens to concentrate a parallel light beam into a uniformly illuminated light circle. We previously proposed a novel algorithm for simulating such a transforming Fresnel concentrator. In this study, we applied this method to the diamond-cutting technique to create prismatic refractive surfaces of high optical quality. To reduce the discreteness of formed images, each refractive lens zone was fabricated from several small identical microprisms in the simulation. The new fabricated circular light beam concentrators were investigated by computer modelling and experimentally with a collimated laser beam.