光学学报, 2010, 30 (6): 1688, 网络出版: 2010-06-07
反射变焦系统的计算机辅助装调
Computer-Aided Alignment for Reflective Zoom Systems
计算机辅助装调 失调量 灵敏度矩阵 泽尼克多项式 反射变焦系统 computer-aided alignment misalignments sensitivity matrix Zernike polynomials reflective zoom system
摘要
计算机辅助装调(CAA)是提升高精度、复杂离轴光学系统成像质量的一个行之有效的手段,特别是对空间光学系统的在轨调整显得尤其重要。介绍了一种针对离轴反射变焦系统进行计算机辅助装调的方法。由于变焦系统具有多重结构,所以需要计算系统在不同位置的灵敏度矩阵。因而,变焦系统的计算机辅助装调实际上是由一系列独立的对应着不同位置的辅助装调组成的。对各重结构进行装调的过程包括灵敏度矩阵的计算、实际系统和理想系统像差差值的计算,以及失调量的计算等。针对反射变焦系统,建立了新的计算机辅助装调数学模型。为了更进一步地说明问题,进行了数值实验,并通过对比装调前后系统的成像质量,验证了该方法的可行性。
Abstract
Computer-aided alignment (CAA) is an effective method to improve the imaging quality of high-precision,complex,and off-axis optical systems. A computer-aided alignment method for off-axis reflective zoom systems is proposed. Due to the varying optical characteristics of a zoom system,sensitivity matrices are used in the alignment rather than a single matrix. Thus,the computer-aided alignment of a zoom system can actually be considered as a series of independent alignments of with different configurations. Each alignment in this series includes the calculation of sensitivity matrix and difference in aberrations between the actual system and the designed system,and the determination of misalignments. For this purpose,a new mathematical model is established. By numerical experiments and comparison of the image qualities between the pre-aligned and post-aligned systems,the feasibility of the CAA method is demonstrated.
张庭成, 王涌天, 常军, 泰哈. 反射变焦系统的计算机辅助装调[J]. 光学学报, 2010, 30(6): 1688. Zhang Tingcheng, Wang Yongtian, Chang Jun, Talha M. M. Computer-Aided Alignment for Reflective Zoom Systems[J]. Acta Optica Sinica, 2010, 30(6): 1688.