医用内窥镜-照明系统主要由光纤与冷光源两部分组成。光纤在临床使用中，反复受弯曲、拉扯、插拔等机械应力作用，极易使其内部光纤折断;频繁污损使用致使光学性能下降明显，其产品性能检测是医用内窥镜系统的重要组成部分。

The medical endoscope illumination system mainly consists of two parts: optical fiber and cold light source. In clinical use, optical fibers are repeatedly subjected to mechanical stresses such as bending, pulling, and insertion, which can easily cause internal fiber breakage; Frequent staining and use lead to a significant decrease in optical performance, and product performance testing is an important component of medical endoscope systems.