Microlenses have become an indispensable optical element in many optical systems. The advancement of technology has led to a wider variety of microlenses fabrication methods, but these methods suffer from, more or less, some limitations. In this article, we review the manufacturing technology of microlenses from the direct and indirect perspectives. First, we present several fabrication methods and their advantages and disadvantages are discussed. Then, we discuss the commonly used materials for fabricating microlenses and the applications of microlenses in various fields. Finally, we point out the prospects for the future development of microlenses and their fabrication methods.

中文翻译：

---

微透镜阵列：制造、材料和应用

微透镜已成为许多光学系统中不可或缺的光学元件。技术的进步导致了更多种类的微透镜制造方法，但这些方法或多或少受到一些限制。在本文中，我们从直接和间接的角度来回顾微透镜的制造技术。首先，我们介绍了几种制造方法，并讨论了它们的优缺点。然后，我们讨论了制造微透镜的常用材料以及微透镜在各个领域的应用。最后，我们指出了微透镜及其制造方法的未来发展前景。