The Covid-19 pandemic has forced educational institutions to adjust their learning process to distance education or online learning. This paper explains how to teach optics during the Covid-19 pandemic by implementing project-based learning that can be supervised online. Students are instructed to design, characterize, and optimize droplet lenses to produce the highest possible lens resolving power by using the USAF-1951 test chart. To do project-based learning correctly, students must understand various optics concepts, such as the principle behind light propagation (Fermat’s principle), determining focal lengths, compound lenses, lens aberrations, and lens resolving power. This paper also describes how to optimize droplet lenses to produce high resolving power with easy to handle and inexpensive materials.

Covid-19大流行迫使教育机构将其学习过程调整为远程教育或在线学习。本文介绍了如何在Covid-19大流行期间通过实施可在线监督的基于项目的学习来教授光学。指导学生使用USAF-1951测试图设计，表征和优化微滴透镜，以产生最大可能的透镜分辨能力。为了正确地进行基于项目的学习，学生必须了解各种光学概念，例如光传播的原理（费马原理），确定焦距，复合透镜，透镜像差和透镜分辨力。本文还介绍了如何优化液滴透镜，以使用易于处理和廉价的材料来产生高分辨力。