| 含中心遮拦剪切干涉图的波前重建新方法 |
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| 引用本文： | 王丹,刘克,李艳秋,汪海.含中心遮拦剪切干涉图的波前重建新方法[J].光学技术,2010,36(5). |
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| 作者姓名： | 王丹 刘克 李艳秋 汪海 |
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| 作者单位： | 北京理工大学光电学院光电成像技术与系统教育部重点实验室; |
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| 基金项目： | 教育部长江学者奖励计划，国家自然科学基金，国家科技重大专项 |
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| 摘 要： | 在利用剪切干涉测量共轴折返式光学系统波像差时,会得到含中心遮拦的环形剪切干涉图。但是,目前的剪切干涉波前重建方法大多适用于圆形或矩形区域。提出了一种适用于含中心遮拦环形剪切干涉图的波前重建方法。该方法是一种基于Zernike环多项式的模式法。仿真和分析了不同剪切比、单项像差、噪声对重建精度的影响,结果表明:该算法具有较高的重建精度,剪切比小于6%时,相对重建误差小于10%;对像散的重建精度较高,对球差和慧差的重建精度相对较低;具有较好的抗噪性。该方法已应用于实验室开发的交叉光栅横向剪切干涉仪的干涉图像波前重建中。
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| 关 键 词： | 光学测量 波前重建 Zernike环多项式 剪切干涉图 遮拦 |
A new wavefront reconstruction method for shearing interferograms with central obscurations |
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| WANG Dan,LIU Ke,LI Yanqiu,WANG Hai.A new wavefront reconstruction method for shearing interferograms with central obscurations[J].Optical Technique,2010,36(5). |
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| Authors: | WANG Dan LIU Ke LI Yanqiu WANG Hai |
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| Institution: | WANG Dan,LIU Ke,LI Yanqiu,WANG Hai(Key Laboratory of Photoelectronic Imaging Technology and System,Ministry of Education of China,School of Optoelectronics,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | In the measurement of the wavefront aberration of on-axis reflective optical systems using shearing interference technology,there will be obscurations in the interferogram.However,the present wavefront reconstruction methods in shearing interference are mainly appropriate for circular or rectangular region.A wavefront reconstruction method is proposed which can apply to shearing interfergrams with central obscurations.The proposed method is a modal method based on Zernike annular polynomials.Effects of diff... |
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| Keywords: | optical measurement wavefront reconstruction Zernike annular polynomials shearing interferogram obscuration |
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