光学精密工程2025，Vol.33Issue(16)：2516-2530,15.DOI:10.37188/OPE.20253316.2516
检焦镜面型精度对航空相机自准直检焦位置的影响
Impact of collimating mirror surface accuracy on focusing position in aviation cameras
摘要
Abstract
For the issue of focus failure caused by changes in the shape of the focusing mirror during the au-tocollimation focusing process of aerial cameras,a corresponding theoretical model was provided.By es-tablishing the relationship between the difference in light intensity received by the sensor and the focusing curve,the impact of different focusing mirror shape accuracies on the distribution of imaging light intensity was calculated,and the effects of various aberrations on the focusing curve were analyzed.Combined with an actual camera model,simulations were conducted using Zemax software in non-sequential mode.By adjusting the temperature to control the shape of the focusing mirror,focusing experiments were carried out under different shapes,verifying the theoretical and simulation results.The results show that when the surface shape RMS of the focusing mirror reaches 0.048 3λ,the peak position of the focusing curve ex-ceeds the half focal depth;when the surface shape RMS reaches 0.082 1λ,the focusing curve exhibits mul-tiple peaks.This has guiding significance for the error allocation,design,and control of the optical auto-collimation focusing mirror,as well as for improving the imaging quality of aerial cameras.关键词
航空相机/自准直/检焦/曲线拟合/面型误差Key words
aerial camera/autocollimation/focus inspection/curve fitting/surface figure error分类
航空航天引用本文复制引用
张俊达,丁亚林,孙林,陈志超,张明强,宇文子明,李汝琛..检焦镜面型精度对航空相机自准直检焦位置的影响[J].光学精密工程,2025,33(16):2516-2530,15.基金项目
国家科技重大专项(No.30-H32A01-9005-13115) （No.30-H32A01-9005-13115）
