Opt Express. 2022 Oct 10;30(21):38371-38382. doi: 10.1364/OE.470252.
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.
在这项研究中，菲涅尔透镜被视为一种有潜力的近视患者视力矫正候选方案。之前有一些研究提出了这个想法；然而，菲涅尔透镜受到其美学和质量的限制。因此，我们设计了一种组合式菲涅尔透镜，其槽的高度和节距分别为 13 微米和 0.1 毫米，以克服由工具鼻半径为 30 微米的超精密加工引起的限制。我们获取了一个具有-5 屈光度的薄复制菲涅尔透镜，并直接将其作为不与普通镜片连接的眼镜使用。我们比较了菲涅尔透镜和具有相同近远视屈光力的常规透镜的光学性能和成像质量。这些结果扩展了菲涅尔透镜作为眼科视力矫正镜片和成像系统的适用性。
