光子学报, 2015, 44 (10): 1022004, 网络出版: 2015-11-30   

基于倾斜偏心旋转对称元件的飞机共形窗口像差校正

Aircraft Conformal Window Correction with Tilted and Decentered Rotationally Symmetrical Elements
作者单位
长春理工大学 光电工程学院,长春 130022
摘要
为校正飞机上双曲率面共形窗口在全扫描视场范围内引入的静态和动态像差,设计了一种静态校正器结构.该校正器由三个含有倾斜和偏心的旋转对称元件组成,且每个元件的表面面形为偶次非球面.校正器相对于共形窗口的位置是固定的,且结构紧凑稳定.基于矢量像差理论,对校正器进行光学设计,并阐述了该校正器的像差校正原理,结果表明:在各扫描视场位置,共形窗口与校正器引入的矢量像散可以相互抵消,使得共形窗口在全扫描视场范围内引入的静态和动态像散均得到校正,整个共形光学系统在可见光波段引入的波前像差均小于1个波长,调制传递函数曲线在50 lp/mm处值均大于0.8.
Abstract
To correct the static and dynamic aberrations introduced by a toroidally shaped conformal window on an aircraft across the full field of regard,a static corrector configuration was designed. The corrector is composed of three tilted and decentered elements with rotationally symmetric structures,and the surface of each element is aspheric. The corrector is fixed in position relative to the conformal window and its structure is compact and stable. Based on the vector aberration theory,the optical design of the corrector was presented and the aberration correction principle of the corrector was explained. The results show that,at any field of regard angle,the vectorial astigmatism introduced by the conformal window and the corrector are offseted mutually,and the static and dynamic astigmatism introduced by the conformal window across the full field are corrected. The wavefront aberration of the conformal optical system is less than one wavelength at the visible spectrum,and the modulation transfer function values of the system are above 0.8 at 50 lp/mm.

赵春竹, 崔庆丰. 基于倾斜偏心旋转对称元件的飞机共形窗口像差校正[J]. 光子学报, 2015, 44(10): 1022004. ZHAO Chun-zhu, CUI Qing-feng. Aircraft Conformal Window Correction with Tilted and Decentered Rotationally Symmetrical Elements[J]. ACTA PHOTONICA SINICA, 2015, 44(10): 1022004.

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