渐进多焦点眼用镜片像散的区域性优化设计
Regional Optimal Design of Astigmatism for Progressive Addition Lenses
沈悦晨 1唐运海 2吴泉英 2陈晓翌 3余浩墨3
作者信息
- 1. 苏州科技大学物理科学与技术学院江苏省微纳热流技术与能源应用重点实验室,江苏 苏州 215009;苏州苏大明世光学股份有限公司江苏省研究生工作站,江苏 苏州 215007
- 2. 苏州科技大学物理科学与技术学院江苏省微纳热流技术与能源应用重点实验室,江苏 苏州 215009
- 3. 苏州苏大明世光学股份有限公司江苏省研究生工作站,江苏 苏州 215007;苏州明世光学科技有限公司,江苏 苏州 215007
- 折叠
摘要
提出了一种区域性优化设计方法,旨在减小渐进多焦点眼用镜片(PAL)的像散,并且利用该方法对PAL的视近区和像散区进行优化设计.首先,采用最小二乘法寻找与叠加区域最契合的球面片.然后,将渐进表面与球面按比例叠加以减小PAL的像散.最后,使用Zernike多项式区域性拟合方法平滑叠加区域边界处的镜片表面,从而减小因表面突变产生的不必要像散.初始设计镜片样品与优化后镜片样品的测试结果显示,优化后PAL最大像散减少了14.3%,最大像散区域面积缩小了30.5%,视近区像散小于0.06 D的范围增加了30.4%.该优化设计方法在保持光焦度分布基本不变的情况下显著降低了像散,并扩大了视近区的有效视觉范围,有助于配镜者获得更好的视觉体验.
Abstract
A regional optimization design method is proposed to reduce the astigmatism of progressive addition lenses(PAL).This method is used to optimize the near vision and astigmatic zones of PAL.First,the least squares method is used to find the spherical patch that best fits the superposed region.Subsequently,the progressive surface and spherical patch are combined proportionally to reduce the astigmatism of PAL.Finally,the Zernike polynomial regional fitting method is used to smooth the lens surface at the boundary of the superposed region,thereby reducing unnecessary astigmatism due to surface mutations.The test results of the initial design and optimized lens samples demonstrate that the maximum astigmatism of PAL after optimization decreases by 14.3%,area of maximum astigmatism decreases by 30.5%,and range with astigmatism less than 0.06 D in the near vision area increases by 30.4%.This optimization design method significantly reduces astigmatism while maintaining a relatively unchanged focal power distribution,expanding the effective visual range in near vision areas and improving visual experience for wearers.
关键词
光学设计/渐进多焦点眼用镜片/区域性优化/光焦度/像散Key words
optical design/progressive addition lenses/regional optimization/focal power/astigmatism引用本文复制引用
出版年
2024
NETL
NSTL
万方数据