基于固定校正板和透镜阵列的机载共形窗口像差校正

为了校正大扫描视场机载共形窗口引入的像差,提出一种基于固定校正板和透镜阵列的静态校正方法。首先使用固定校正板校正静态像差;然后在像面前安置固定的透镜阵列,利用透镜阵列中的各个透镜单元分别校正不同扫描角度的动态像差;最后基于所提方法设计应用在机载共形光学系统中的像差校正器。设计结果表明,所提方法在±42°的扫描视场范围内能够良好地校正共形窗口引入的像差。与其他动态或静态校正方法相比,所提方法可以实现大扫描视场机载共形光学系统像差的校正,同时降低机载共形光学系统的质量,提高系统的稳定性。

Aberration Correction of Onboard Conformal Window Based on Fixed Corrector and Lens Array

In this paper,a static correction method based on a fixed corrector and a lens array is proposed to correct the aberrations introduced by an onboard conformal window in a large scanning field of view.To be specific,first,a fixed corrector is used to correct the static aberrations.Then,a fixed lens array is placed in front of the image plane and the lens units in the array are respectively employed to correct the dynamic aberrations at different scanning angles.Finally,an aberration corrector in an onboard conformal optical system is designed based on the proposed method.The design results show that the proposed method can well correct the aberrations introduced by the conformal window in the scanning field of view of±42°.Compared with other dynamic or static correction methods,the proposed method can realize the aberration correction of an onboard conformal optical system in a large scanning field of view,reduce the mass of the system,and improve the stability of the system.