高成像质量光学系统的元件旋转补偿

Compensation Using Clocking Lens Elements in High Imaging Performance Optical Systems

在高成像质量的光学系统的集成制造中,受元件的面形和材料的均匀性误差的影响很难满足极限的成像质量要求,必须采用多种像质补偿措施,元件的旋转补偿是其中必要的像质补偿措施之一。提出了一种光学系统光学元件旋转补偿优化方法,该方法可以用于获取元件的最佳旋转角度。实验验证了该方法的可行性,证实了旋转补偿对系统波前像差具有较强的补偿能力。通过研究旋转补偿的机理总结出可用于评估光学系统旋转补偿能力的多边形原则,并以此作为光学材料筛选的原则之一。最后提出了一种针对球面多视场系统的旋转补偿优化方法,并得到了光学设计软件的分析验证。旋转补偿是高精密光学系统制造和集成中经济有效的像质补偿措施,对进一步提升光学系统的性能具有重大的意义。

In the manufacturing process of high imaging performance lenses, the errors of the surface figure and the material homogeneity make it hard to realize extremely-small aberration lenses. Lots of compensation strategy must be applied and the lens elements clocking is an essential one. A clocking algorithm that can figure out the right angle of lens is proposed and the validity of the algorithm is proved by an experiment, it also shows that clocking is a potential strategy of wavefront compensation. A principle that can be used to judging the compensability of a lens and selecting optical material is proposed. At the end of the paper, a method of modeling multi-field optical system for clocking compensation is proposed, and the analysis result of optical design software proves that it＇s useful. Clocking is an effective and economic compensation method in high performance lens manufacturing process, and it is meaningful for image performance improving.