大口径长焦距平行光管主反射镜支撑与调整机构的研究

Supporting and adjusting for collimator primary mirror with large-aperture and long-focal length

检验大口径长焦距光学系统 ,需要相应的大口径长焦距平行光管 ,而大口径长焦距平行光管的制造不同于短焦距平行光管的制造 ,环境因素及光学元件的固定方式对光管的成像质量有很大的影响。为了使光管有着较好的质量 ,光学镜面要有较好的面形及灵敏的调整机构。

Testing large-aperture and long-focal length optical system needs proper large-aperture and long-focal length collimator. The manufacturing of the large collimator with long focal length is different from that of the large collimator with short one. The environmental condition and the mounting method of the mirror influenced the quality of collimator. In order to get a good quality of the collimator, the surface figure of the mirror must be good, and the mechanical construction for adjusting the mirror must be smart. In this paper, we introduced how to support and adjust the large primary mirror and its influence on the surface figure of the mirror. By testing, the method of supporting and adjusting has been proved right. We have already got the collimator with ideal diffraction limit.