转台内部光路测试系统设计

介绍了转台的组成和功能.利用一束平行光通过离轴抛物镜时汇聚在焦点处的工作原理设计了一套测试系统,用来调整转台内部光路瞄准精度.使用测试设备观察指示光光斑位移量,调整几片反射镜位置使其达到瞄准精度要求.为了减小测试系统的测量误差,对离轴抛物镜焦面的离焦量做了严格的控制,并对测试系统中可能带来的误差进行了分析.

Design of Ray Path Test System in Turntable

The composition and function of turntable are described.The working principle of a bunch of parallel light gathered on the focus when passing off-axis parabola was applied to design a test system to adjust the internal optical alignment precision for the turntable.The test equipment was used to directly observe the spot displacement,and to make a position adjustment of a few slices of mirrors to reach the target accuracy.In order to reduce the test error of test system,the off-axis parabola on the focal plane of the defocus amount was strictly controlled,and the potential error of the system was analyzed.