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...
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| Định dạng: | Bài trích |
| Ngôn ngữ: | English |
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Optica Publishing Group
2022
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| Truy cập trực tuyến: | 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 |
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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 |
8.891787 |