对径向哈特曼像质检测系统(RHTS)与被检测光学系统的光轴对准问题进行了分析研究,提出了一种新的在安装和检测过程中的光轴对准方法,用于径向哈特曼检测系统与被检测光学系统的对准。该方法根据镜面反射原理,利用安装在扫描旋转机构上的细光束发射和接收装置,从CCD摄像机采集到的图像中分析计算出光轴调整所需要的偏移量,通过简明直观的步骤进行光轴校准。对该方法进行了原理推导、仿真实验及系统实验。实验结果表明,这种调整方法简单快速且精度高,能满足径向哈特曼像质检测中光轴对准的要求。该方法还可用于大型望远镜光学系统主次镜对准。

Alignment for radial Hartmann test system (RHTS) and optical testing system is analyzed. A new method of alignment based on the law of refection,is proposed. A laser is installed on a rotary arm of RHTS emitting beamlet to the measured optical system,while a CCD camera is used to record the tracing for reflected spots. In this way,the offset between optic axis and slewing axis can be figured out. The experimental results show that the proposed method is simple and efficient. This algorithm can also be used in the alignment of large telescope.