为实现静止轨道空间光学遥感器的多谱段成像，研究了光学系统特定谱段的多光谱成像的方法。对两种滤光模式进行了对比，选择透射式滤光方案进行不同谱段光线的切换。结合本项目光学系统的特点，确定了在光学系统中光线集中度较高的焦平面附近设置滤光轮机构的方案。通过对多种转动机构特点的比较，设计了一种基于正五棱锥台基座的新型滤光轮机构，该机构由滤光轮组件和滤光轮驱动机构两部分组成。介绍了滤光轮机构的组成和工作原理，最后，在环境模拟试验前后对滤光轮机构进行了综合性能测试。测试结果表明：该机构具有结构强度高、结构紧凑、精度高、稳定可靠等特点。试验前后滤光片面形精度RMS值均优于λ/30，机构转动精度优于25″，机构自锁性能良好，满足复杂空间环境下光学遥感器多谱段成像的要求。

To achieve the multispectral imaging of a space optical remote sensor in geostationary orbit, multispectral imaging methods of light filtering in the optical system were investigated. By comparing two kinds of filter modes , the transmissive filter program was selected to switch lights in different bands. Combining the characteristics of the optical system, a scheme was chosen to set a filter wheel mechanism in the vicinity of the focal plane where the degree of light concentration is higher. By comparing the characteristics of different rotating mechanisms, a new type of filter wheel mechanism consisting of a filter wheel assembly and a filter wheel driving mechanism was designed based on a regular five truncated pyramid. The composition and working principle of the mechanism were introduced. Then, the comprehensive performance on filter wheel mechanism was tested before and after the environmental simulation tests. The test results show that the Root Mean Square(RMS) value of filter surface accuracy before and after the tests is better than the average value of λ / 30, the body rotation accuracy is better than 25″. Moreover, the mechanism has good self-locking performance and meets the requirements of optical remote sensing multispectral imaging under complex space environments.