大口径望远镜光学系统的误差分配与分析

光学系统的公差是光学设备加工、装调和使用中的一项重要性能指标。如何在加工、装调和使用中找到影响系统性能的因素以保证达到预期的精度，是大口径望远镜光学系统设计中的重要部分。本文以1.2m望远镜光学系统为例，阐述了误差分配原则，首先根据设计确定总体误差标准，然后计算误差分配的项数，最后依据分配原则，结合实际加工和装调水平，给出了合理的误差分配结果。结果表明，在满足目前国内加工要求和装配的条件下，使分配后该望远镜光学系统误差(RMS波像差)小于λ/8.5，为大口径望远镜光学系统的误差分配提供了有力的依据。

Error budget and analysis for the large telescope optical system

By comparing of the research and development of optical system in a large telescope at home and abroad,a scheme for establishing error budge system was presented to determine the influential factors on optical system to ensure the expected precision in design,manufacturing and assembling of large aperture optical system.By taking a 1.2 m telescope optical system as an example,the conformation of error budget was introduced and a reasonable static error allocation was worked out.Firstly,a total error standar...