Cover Image

Comprehensive design method of a soft multifocal contact lens with NURBS

This study presents a comprehensive method for designing a multifocal contact lens (MCL) with Snell’s law and non-uniform rational B-spline (NURBS) curves. Instead of using thin lens approximation, general mathematical formulas have been developed to achieve the accurate coordinates of points on the...

Full description

Saved in:
Bibliographic Details
Main Authors: Vu, Thi Lien, Vu, Ngoc Pi, Nguyen, Thi Quoc Dung
Format: Bài trích
Language:English
Published: Optica Publishing Group 2022
Subjects:
Contact lenses
Lens design
Online Access:https://opg.optica.org/ao/abstract.cfm?uri=ao-61-10-2518
https://dlib.phenikaa-uni.edu.vn/handle/PNK/5896
https://doi.org/10.1364/ao.451952
Tags: Add Tag
No Tags, Be the first to tag this record!
id oai:localhost:PNK-5896
record_format dspace
spelling oai:localhost:PNK-58962022-08-17T05:54:55Z Comprehensive design method of a soft multifocal contact lens with NURBS Vu, Thi Lien Vu, Ngoc Pi Nguyen, Thi Quoc Dung Contact lenses Lens design This study presents a comprehensive method for designing a multifocal contact lens (MCL) with Snell’s law and non-uniform rational B-spline (NURBS) curves. Instead of using thin lens approximation, general mathematical formulas have been developed to achieve the accurate coordinates of points on the anterior lens surface profile of the MCL to meet various given optical power distributions. Then the NURBS curve is adjusted to fit these data points to obtain the smooth front lens surface profile. This method not only improves the accuracy of the optical power profiles of MCLs but also reduces the spherical aberration in near/distance optical zones. The experimental results show that the power profiles of soft MCLs agree with those of the simulation results and original design requirements. The proposed method has been proven for the MCL design, and it can be feasibly applied in complex optical lens designs 2022-07-13T01:59:50Z 2022-07-13T01:59:50Z 2022 Bài trích https://opg.optica.org/ao/abstract.cfm?uri=ao-61-10-2518 https://dlib.phenikaa-uni.edu.vn/handle/PNK/5896 https://doi.org/10.1364/ao.451952 en Optica Publishing Group
institution Digital Phenikaa
collection Digital Phenikaa
language English
topic Contact lenses
Lens design
spellingShingle Contact lenses
Lens design
Vu, Thi Lien
Vu, Ngoc Pi
Nguyen, Thi Quoc Dung
Comprehensive design method of a soft multifocal contact lens with NURBS
description This study presents a comprehensive method for designing a multifocal contact lens (MCL) with Snell’s law and non-uniform rational B-spline (NURBS) curves. Instead of using thin lens approximation, general mathematical formulas have been developed to achieve the accurate coordinates of points on the anterior lens surface profile of the MCL to meet various given optical power distributions. Then the NURBS curve is adjusted to fit these data points to obtain the smooth front lens surface profile. This method not only improves the accuracy of the optical power profiles of MCLs but also reduces the spherical aberration in near/distance optical zones. The experimental results show that the power profiles of soft MCLs agree with those of the simulation results and original design requirements. The proposed method has been proven for the MCL design, and it can be feasibly applied in complex optical lens designs
format Bài trích
author Vu, Thi Lien
Vu, Ngoc Pi
Nguyen, Thi Quoc Dung
author_facet Vu, Thi Lien
Vu, Ngoc Pi
Nguyen, Thi Quoc Dung
author_sort Vu, Thi Lien
title Comprehensive design method of a soft multifocal contact lens with NURBS
title_short Comprehensive design method of a soft multifocal contact lens with NURBS
title_full Comprehensive design method of a soft multifocal contact lens with NURBS
title_fullStr Comprehensive design method of a soft multifocal contact lens with NURBS
title_full_unstemmed Comprehensive design method of a soft multifocal contact lens with NURBS
title_sort comprehensive design method of a soft multifocal contact lens with nurbs
publisher Optica Publishing Group
publishDate 2022
url https://opg.optica.org/ao/abstract.cfm?uri=ao-61-10-2518
https://dlib.phenikaa-uni.edu.vn/handle/PNK/5896
https://doi.org/10.1364/ao.451952
_version_ 1751856286656364544
score 8.887836

Similar Items