Journal of Applied Optics, Volume. 44, Issue 5, 952(2023)
Design of off-axis three-mirror system with large symmetric field of view
Figures & Tables(16)
Table 1. Optical system parameters
View tableView in ArticleTable 1. Optical system parameters
参数 指标 焦距/mm 800 mm F数 5 视场/（°） 13×13 波长/nm 400～1 000 地面分辨率/m 4
Table 2. Initial structural parameters
View tableView in ArticleTable 2. Initial structural parameters
表面 曲率半径/mm 距离/mm 圆锥系数 主镜 −2 400 −480 −4.443 次镜 −757 480 −0.068 三镜 −960 −768 0.177
Table 3. Zernike coefficients of primary mirror
View tableView in ArticleTable 3. Zernike coefficients of primary mirror
项数 参数 项数 参数 项数 参数 Z4 −5.888 998 Z16 12.048 383 Z28 1.973 612 5 Z5 0.763 341 68 Z17 11.405 128 Z31 −0.353 444 91 Z8 16.720 45 Z20 −4.986 482 8 Z32 0.550 896 96 Z9 −4.715 094 2 Z21 2.208 169 9 Z35 0.541 426 4 Z11 −17.063 728 Z24 2.607 720 1 Z36 0.072 619 379 Z12 0.655 611 58 Z25 6.987 462 3 Z37 −0.456 826 89 Z15 7.971 883 Z27 2.018 285
Table 4. Zernike coefficients of tertiary mirror
View tableView in ArticleTable 4. Zernike coefficients of tertiary mirror
项数 参数 项数 参数 项数 参数 Z4 3.068 102 3 Z16 4.80 572 96 Z28 −0.089 332 522 Z5 −13.302 909 Z17 −0.471 574 32 Z31 0.105 020 45 Z8 −37.987 146 Z20 0.465 797 18 Z32 −0.568 719 95 Z9 1.328 642 4 Z21 −3.647 934 9 Z35 −0.864 518 24 Z11 0.821 888 53 Z24 −6.847 451 6 Z36 −0.721 849 52 Z12 −9.709 854 9 Z25 −0.930 853 56 Z37 −0.215 162 03 Z15 −22.614 259 Z27 0.086 890 123
Table 5. Optimized structural parameters
View tableView in ArticleTable 5. Optimized structural parameters
表面 曲率半径/mm 距离/mm 圆锥系数 主镜 −1696.393 −527.344 8.742 次镜 −741.679 515.891 10.233 三镜 −460.872 −540.355 −4.352
Table 6. RMS spot radius of each field of view
μm View tableView in ArticleTable 6. RMS spot radius of each field of view
μm x方向视场 y方向视场 6° 10° 15° 19° 0° 2.606 1.445 0.783 1.850 3.5° 2.657 2.177 1.947 3.005 6.5° 2.432 2.313 2.835 2.405
Table 7. System tolerances for off-axis reflection system
View tableView in ArticleTable 7. System tolerances for off-axis reflection system
元件 公差参数 曲率半径/mm 二次曲面系数 X轴倾斜/(°) Y轴倾斜/(°) X轴偏心/mm Y轴偏心/mm 元件间隔/mm 主镜 ±0.2 ±0.001 0.01 0.01 ±0.1 ±0.1 ±0.1 次镜 ±0.1 ±0.001 0.01 0.01 ±0.1 ±0.1 ±0.1 三镜 ±0.1 ±0.001 0.03 0.01 ±0.1 ±0.1 ±0.1
Table 8. Monte Carlo tolerance analysis results
View tableView in ArticleTable 8. Monte Carlo tolerance analysis results
蒙特卡罗百分比/% MTF值@100 lp/mm 90 0.39 80 0.45 50 0.51
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Huai HUANG, Feng LIN. Design of off-axis three-mirror system with large symmetric field of view[J]. Journal of Applied Optics, 2023, 44(5): 952
Paper Information
Category: Research Articles
Received: Nov. 10, 2022
Accepted: --
Published Online: Mar. 12, 2024
The Author Email: LIN Feng (林峰)
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