为验证液晶自适应光学成像技术校正大气湍流所引起的波前像差的有效性，提高光学系统的能量利用率，应用Zemax软件设计出了与1 200 mm望远镜匹配的开环液晶自适应光学系统。针对开环自适应光学系统探测光路和校正光路自身的特殊要求，制定了具体的公差原则，并应用Zemax软件进行了公差分析。分析表明，设计的自适应光学系统具备较宽松的公差条件，容易加工和装调。评价了该光学系统的成像性能，结果表明，设计的自适应光学系统的MTF曲线接近衍射极限，光学传递函数的模在50 lp/mm时可达到0.4，而成像CCD的极限分辨率为31 lp/mm，充分地利用了CCD相机的分辨资源。该自适应光学系统与1 200 mm望远镜对接匹配后的组合焦距为19.9 m，F数为16，PV值为0.031 4λ。

In order to verify the validity of the liquid crystal adaptive optics imaging technology for the correction of the aberration caused by atmospheric turbulence and to improve the energy utilization of the optical system，Zemax is used to design the liquid crystal adaptive optical system and to evaluate the characteristics of the system.Obtained Modulation Transfer Function(MTF) of the liquid crystal adaptive optical system is very closed to the diffraction limit and the modulus of the MTF is 0.4 at 50 lp/mm.For the specific requirements of detection and correction for a optical path in the open-loop adaptive optical system,the specific tolerance principle is established.According to the tolerance analysis, it is shown that the adaptive optical system has a more relaxed tolerance condition,and it is easier to achieve processing and alignment.The limited resolution of the CCD is 31 lp/mm,which means the resources of CCD has been utilized effectively.After matching a 1 200 mm telescope,the focal length of the whole optical system is 19.9 m, the F number is 16 and the peak-valve(PV) value is 0.031 4λ.