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Design of a dynamic refocus system based on the Seidel aberration theory
Shao, L. N.; Z. L. Cao; Q. Q. Mu; L. F. Hu; Y. K. Wang; S. X. Wang and L. Xuan
2016
发表期刊Chinese Optics Letters
卷号14期号:4
摘要For a 1.2 m Zerodur primary mirror, an effective primary mirror support system was proposed. A lateral support based on 6 sets of flexible tangent link structures and an axial support based on 18 sets of semi-flexible Whiffletree structures were combined to ensure the primary mirror to maintain good surface figure accuracy and system stiffness at a larger temperature range and different elevation angles. The working principle of the system was analyzed and the surface figure accuracy of the primary mirror and modal of the support were tested. The analysis for system structure indicates that the support system ensures the positioning accuracy and surface figure accuracy of the primary mirror and its thermal decoupling ability is verified by support principle deduction. The finite element analysis (FEA) on the statics distortion and thermal distortion of the mirror surface shows that the system has excellent structural rigidity. The surface figure accuracy tests indicate that the RMS values of mirror optical surface distortion at the optical axis in vertical and horizontal states are 15.25 nm and 20.75 nm respectively. Furthermore, the first natural frequency of support system is measured to be 60.3 Hz at modal tests. As comparing FEA simulation results with measurement results. It shows that relative errors of the mirror optical surface distortion are 14.0% and 17.8% separately at different elevation angles, and that of the first natural frequency is 10.8%. Due to the approximate results between simulations and measurements, it demonstrates that the design scheme and principle deduction of primary mirror support system are reasonable, and the FEA modeling is creditable. 2016, Science Press. All right reserved.
文章类型期刊
收录类别SCI ; EI
语种英语
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/57171
专题中科院长春光机所知识产出
推荐引用方式
GB/T 7714
Shao, L. N.,Z. L. Cao,Q. Q. Mu,et al. Design of a dynamic refocus system based on the Seidel aberration theory[J]. Chinese Optics Letters,2016,14(4).
APA Shao, L. N.,Z. L. Cao,Q. Q. Mu,L. F. Hu,Y. K. Wang,&S. X. Wang and L. Xuan.(2016).Design of a dynamic refocus system based on the Seidel aberration theory.Chinese Optics Letters,14(4).
MLA Shao, L. N.,et al."Design of a dynamic refocus system based on the Seidel aberration theory".Chinese Optics Letters 14.4(2016).
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