针对EAST托卡马克等离子体中波红外与可见光集成诊断系统进行了设计。系统采用独特的光路形式，使成像指标满足的同时，尽量避免光学元件受到辐射和污染；通过采用分色方式，实现中波红外与可见光两路同口径、同视场成像，提高了观测效率。最终设计完成了通光口径3 mm，视场58°×47°的广角红外与可见等离子成像系统。装调后对各项指标测试结果表明，系统性能达到设计要求。通过对EAST托卡马克装置的放电过程成像实验表明，系统红外与可见两路实现了广角、清晰等离子成像。

A middle infrared and visible optical diagnostic system was designed for EAST Tokamak plasma. Through adopting innovate optical structure, the system satisfied the imaging requirements, and avoided the radiation and stain at the same time. And through using dichroic beam split mode, the middle infrared and visible path can image with common aperture and filed, which improved the observation efficiency. At last the wide-angle infrared and visible plasma imaging system was designed, with 3 mm aperture diameter and 58°×47° field of view. After alignment, the optical performance was tested, and the results show that all of the indexes satisfy the requirement the system. Through the imaging experiment for the discharge process in the EAST tokamak, the middle infrared and visible path of the system can image with wide-angle and high contrast synchronously.