Optics and Precision Engineering, Volume. 29, Issue 9, 2009(2021)
Optical design of grating spectrograph for solar CO 4.66 μm spectrum observation
Figures & Tables(19)
Table 1. Optical design parameters of spectrograph
View tableView in ArticleTable 1. Optical design parameters of spectrograph
设计参数 值 工作波长 4.663~4.670 µm 工作级次 5级 中心波长 4.667 µm 光谱分辨率 0.046 4 nm 自由光谱范围 0.93 μm 系统焦距 1 300 mm 视场 20.3'×0.158′ 狭缝宽度 7.68 mm×60 μm
Table 2. Parameters of coaxial three-mirror system
View tableView in ArticleTable 2. Parameters of coaxial three-mirror system
反射镜 表面类型 曲率半径/
mm
厚度/mm -e2 主镜 球 面 -1 299.576 3 -350 0 次镜 双曲面 -645.454 8 350 -2.026 5 三镜 椭球面 -1 282.357 8 -550 -0.255 2
Table 3. Off-axial displacement of initial TMA
View tableView in ArticleTable 3. Off-axial displacement of initial TMA
元件 表面类型 离轴量/mm 偏心量/mm 主镜 球面 20 -90 次镜 双曲面 20 0 三镜 椭球面 20 100 光阑 -110 0
Table 4. Mirror parameters of optimized TMA
View tableView in ArticleTable 4. Mirror parameters of optimized TMA
反射镜 曲率半径/mm 曲面常数 -e2 4th order 6th order 8th order 主镜 -1 299.576 3 0 1.011 8×10-10 -3.208 4×10-16 5.005 2×10-21 次镜 -671.379 7 -6.422 9 -8.805 2×10-10 -1.670 2×10-13 4.336 1×10-17 三镜 -1 334.572 6 1.012 0 4.628 6×10-10 -1.411 0×10-15 -1.432 5×10-20
Table 5. Optical structure parameters of optimized grating spectrograph
View tableView in ArticleTable 5. Optical structure parameters of optimized grating spectrograph
反射镜 曲率半径/mm 曲面常数 -e2 4th order 6th order 8th order 主镜 -1 299.259 6 0 1.004 4×10-10 -1.375 1×10-16 2.018 5×10-21 次镜 -670.575 9 -6.486 8 -1.004 4×10-19 -1.189 4×10-14 3.740 4×10-18 三镜 -1 335.693 2 1.059 9 3.660 3×10-10 -1.944 7×10-15 -8.889 6×10-21
Table 6. Off-axial parameters of optimized grating spectrograph
View tableView in ArticleTable 6. Off-axial parameters of optimized grating spectrograph
元件 直径/mm 离轴量/
mm
离心量/mm 厚度/
mm
主镜 140 -111.716 4 -90 534.289 4 次镜 82 -111.770 7 0 186.257 2 三镜 160 -115.592 8 100 534.289 4 光栅 -241.716 4 0 234.289 4
Table 7. Spectral imaging height at different slit heights
View tableView in ArticleTable 7. Spectral imaging height at different slit heights
波长/μm 狭缝位置/mm 0 1 2 3 3.84 4.663 5.471 77 5.470 111 5.465 237 5.457 114 5.447 779 4.667 0 0.001 62 0.006 48 0.014 59 0.023 90 4.670 -4.112 27 -4.113 91 -4.118 85 -4.127 08 -4.136 53
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Ye-yan WEI, Xian-yong BAI, Zhi-yong ZHANG, Zhi-wei FENG, Qian SONG. Optical design of grating spectrograph for solar CO 4.66 μm spectrum observation[J]. Optics and Precision Engineering, 2021, 29(9): 2009
Paper Information
Category: Modern Applied Optics
Received: Jan. 20, 2021
Accepted: --
Published Online: Nov. 22, 2021
The Author Email: FENG Zhi-wei (zhwf@bao.ac.cn)
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