根据紫外告警模拟系统的使用要求，基于法布里帕罗(F-P)窄带滤光片结构，通过对膜系理论的分析、材料蒸发工艺的研究、离子源参数的调整和优化，利用不同膜系设计的组合，设计并制备出能够有效采集紫外信号的紫外滤光膜。该滤光膜在紫外峰值透射率达到17.96%，通带半峰全宽约为20 nm，能够更准确地采集到所需紫外波段的模拟信号，同时对紫外以及可见波段进行了有效地抑制，可以较好地控制背景噪声的产生，其截止度小于-30 dB。该滤光膜在紫外告警模拟系统中对自然光进行滤光，对紫外信号进行了有效地采集，使系统的整体精度得到了提升。

According to the requirement of ultraviolet (UV) warning system, based on the structure of Fabry-Perot (F-P) narrowband filter, by analysing film systems theory, the research of material evaporation process, adjustment and optimization of the ion source parameters, using the combination of different film system design, the UV filter film which can collect the UV signal effectively is designed and prepared. The peak transmittance of this film in UV is 17.96%, half-peak bandwidth is 20 nm. The filter can collect the UV signal more accurate and ultraviolet and visible band are inhibited effectively, so the background noise can be controlled at a low level. The cut-off degree is less than -30 dB. This film can filter natural light and collect the UV signal effectively in the UV warning system, and it has a significant contribution to improve the overall accuracy of the system.