基于热光学分析的真空相机光学镜设计

发布时间：2018-02-21 14:34

  本文关键词： 测量 改正镜 热光学分析 真空相机 热力耦合　出处：《激光与光电子学进展》2017年12期 　论文类型：期刊论文

【摘要】：以热光学分析为基础,对复杂环境下改正镜作为光学窗口的玻璃厚度进行了优化设计。对改正镜的强度及其所处的热环境进行了分析,将温度场映射到结构模型中,利用有限元计算改正镜在热-力耦合情况下的改正镜的变形量和面形数据,对正镜面形数据进行拟合和处理,最后将处理后的改正镜面形数据导入光学设计方案中,分析改正镜厚度对光谱仪性能影响。结果表明改正镜厚度应该不小于10mm;当改正镜厚度为15mm时,改正镜受热力学影响可以忽略。因此改正镜作为光学窗口既能满足强度和可靠性要求,又能满足光谱仪性能指标,为窗口的设计提供了依据。
[Abstract]:Based on thermal optical analysis, the glass thickness of correction mirror as optical window in complex environment is optimized. The strength of correction mirror and its thermal environment are analyzed, and the temperature field is mapped to the structure model. Using finite element method to calculate the deformation and plane shape data of correction mirror under thermal-mechanical coupling, the normal mirror shape data is fitted and processed. Finally, the corrected mirror shape data after processing is introduced into the optical design scheme. The effect of correction mirror thickness on the performance of spectrometer is analyzed. The results show that the thickness of correction mirror should not be less than 10 mm, and when the thickness of correction mirror is 15 mm, The effect of thermodynamics on the correction mirror can be neglected. Therefore, as an optical window, the corrector can not only meet the requirements of strength and reliability, but also meet the performance index of spectrometer, which provides the basis for the design of the window.
【作者单位】： 中国科学院国家天文台南京天文光学技术研究所;中国科学院天文光学技术重点实验室;
【基金】：国家自然科学基金(11273038,11603054,11503059,11473049)
【分类号】：TB852.1
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本文编号：1522134