| 光学加工中高频误差对散射损失比的影响 |
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| 引用本文： | 戴一帆,吴冬良,王贵林. 光学加工中高频误差对散射损失比的影响[J]. 光学精密工程, 2009, 17(10): 2365-2370 |
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| 作者姓名： | 戴一帆 吴冬良 王贵林 |
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| 作者单位： | 国防科技大学,机电工程与自动化学院,湖南,长沙,410073;国防科技大学,机电工程与自动化学院,湖南,长沙,410073;国防科技大学,机电工程与自动化学院,湖南,长沙,410073 |
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| 基金项目： | 国家重大基础研究项目和国家自然科学基金资助项目 |
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| 摘 要： | 以大型光学系统主镜为研究对象，根据光学镜面面形误差近似高斯平稳随机过程特征，结合Harvey-Shack散射理论以及统计光学理论，建立了光学镜面中高频误差RMS与散射损失比RSL之间的数学关系模型，利用实际加工数据进行了仿真验证。研究表明，散射损失比RSL随着中高频误差RMS的增加近似呈指数规律增加，同时在聚焦范围内，理论分析与仿真计算结果非常吻合。在中频误差和高频误差RMS值分别小于λ/63时，对RSL的影响均小于1%，为光学镜面的进一步修形提供理论支持。
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| 关 键 词： | 光学主镜 中频误差 高频误差 散射损失比 误差均方根 |
| 收稿时间： | 2008-11-17 |
| 修稿时间： | 2009-01-05 |
Influence of mid-and-high frequency errors from optical processing on ratio of scattering loss |
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| DAI Yi-fan,WU Dong-liang,WANG Gui-lin. Influence of mid-and-high frequency errors from optical processing on ratio of scattering loss[J]. Optics and Precision Engineering, 2009, 17(10): 2365-2370 |
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| Authors: | DAI Yi-fan WU Dong-liang WANG Gui-lin |
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| Affiliation: | DAI Yi-fan,WU Dong-liang,WANG Gui-lin(School of Mechatronics Engineering and Automation,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | In view of a primary mirror of an optical system,the influence of the mid-and-high frequency errors on the Ratio of Scattering Loss(RSL) was analyzed.On the basis of the statistical optics theory and Harvey-Shack scatter theory,a mathematical model of the relationshop between the Root-mean Square(RMSs) of mid-and-high frequency errors and the RSL was established by assuming the surface errors as a stationary Gaussian random process,and the numerical computation and actual surface profile data of the model w... |
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| Keywords: | optical primary mirror mid-frequency error high-frequency error ratio of scattering loss root-mean square |
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