Open AccessHigh diopter spectacle using a flexible Fresnel lens with a combination of grooves
Author(s) -
Truong V. Vu,
HANKIL Yeon,
Hongseok Youn,
Jaejong Lee,
Hocheol Lee
Publication year - 2022
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.470252
Subject(s) - optics , fresnel lens , dioptre , lens (geology) , fresnel number , fresnel zone antenna , fresnel equations , simple lens , fresnel diffraction , fresnel zone , materials science , physics , computer science , focal length , refractive index , diffraction , telecommunications , antenna (radio) , visual acuity , directional antenna , smart antenna
In this study, the Fresnel lens was investigated as a potential candidate for vision correction in patients with myopia. A few previous studies have suggested this idea; however, Fresnel lenses are limited by their aesthetics and quality. Therefore, we designed a combination of Fresnel lens grooves with a constant height and pitch of 13 µm and 0.1 mm, respectively, to overcome the limitations caused by ultra-precision machining with a tool nose radius of 30 µm. A thin replicated Fresnel lens with a power of -5 diopter was procured and applied directly as spectacles that are unattached to the normal lens. The optical performance and image quality of the Fresnel lens were compared with those of a conventional lens possessing the same power in both near and far vision. These results extend the applicability for the use of Fresnel lenses as vision-correcting ophthalmological lenses and imaging systems.