Grinding and polishing a glass lens is complex and time-consuming.

眼镜片抛光打磨复杂又耗时。

This has to do with how light diffuses through a microscope's glass lens and was known as Abbe's Diffraction Limit.

这与光如何通过显微镜的玻璃透镜漫射有关，被称为阿贝衍射极限。

The rest is reflected or absorbed by the material. In a typical glass lens, by contrast, at least 90% of the light passes through.

剩余的都被材料反射或吸收了。相反，在一个传统玻璃镜片中，至少90%的光线都能穿过去。

First lit in 1870, Cana Island Light still serves as a navigational aid, though its antique glass lens is now automated and computer-controlled.

Cana Island Light 于 1870 年首次点亮，尽管其古董玻璃透镜现在已实现自动化和计算机控制，但仍用作导航设备。

In the meta-surface lens, the transparent blocks also bend the light toward the focal point matching what happens in the glass lens, but with much less material.

在超表面透镜中，透明块也将光线弯曲到与玻璃透镜中发生的情况相匹配的焦点，但使用的材料要少得多。