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| 具有蜂窝内壁的遮光罩杂散光抑制特性分析 | |
| 引用本文： | 陈学,孙创,夏新林.具有蜂窝内壁的遮光罩杂散光抑制特性分析[J].光学学报,2012,32(5):523004-234. |
| 作者姓名： | 陈学 孙创 夏新林 |
| 作者单位： | 陈学:哈尔滨工业大学能源科学与工程学院, 黑龙江 哈尔滨 150001 孙创:哈尔滨工业大学能源科学与工程学院, 黑龙江 哈尔滨 150001 夏新林:哈尔滨工业大学能源科学与工程学院, 黑龙江 哈尔滨 150001 |
| 基金项目： | 国家自然科学基金(90816022)资助课题。 |
| 摘 要： | 将具有蜂窝内壁结构的遮光罩内的杂散光传播分解为蜂窝结构的散射、内壁等效面传播两个层次的行为。通过建立蜂窝结构的等效面各向异性反射模型,采用蒙特卡罗法模拟获得内壁等效面的双向反射分布函数(BRDF)。以此为基础,再次采用蒙特卡罗法模拟遮光罩内壁等效面的杂散光传播过程,分析了该类遮光罩的杂散光抑制特性,并讨论了蜂窝高度和涂层反射率的影响。结果表明,遮光罩内壁蜂窝结构有很好的杂散光抑制作用;蜂窝高度与边长之比δ≥1时,遮光罩的抑制能力不再变化,降低涂层反射率能够有效地增强抑制效果。 |
| 关 键 词： | 空间光学 杂散光 遮光罩 蜂窝结构 蒙特卡罗法 |
| 收稿时间： | 2011/11/17 |
Stray Light Suppression Property of Baffle with Honeycombed Wall |
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| Chen Xue Sun Chuang Xia Xinlin.Stray Light Suppression Property of Baffle with Honeycombed Wall[J].Acta Optica Sinica,2012,32(5):523004-234. | |
| Authors: | Chen Xue Sun Chuang Xia Xinlin |
| Institution: | Chen Xue Sun Chuang Xia Xinlin(School of Energy Science and Engineering,Harbin Institute of Technology,Harbin,Heilongjiang 150001,China) |
| Abstract: | Stray light propagation in the baffle with honeycombed wall is divided into two levels, the scattering inside honeycomb structures and the transmission by the equivalent surface of inner wall. An anisotropic reflection model is established to predict the bidirectional reflectance distribution function (BRDF) data of the surface. By simulating the stray light propagation with the Monte-Carlo method, the suppression property of the baffle and the effects of coating reflectivity and geometric parameter of honeycomb are investigated. The results show that the baffle with honeycombed wall has a good performance of stray light suppression, and lower reflectivity of coating can enhance the performance. |
| Keywords: | space optics stray light baffle honeycomb structure Monte-Carlo method |
| 本文献已被 CNKI 等数据库收录！ | |