Optical Instruments, Volume. 44, Issue 3, 44(2022)
A method for optimizing fisheye lenses by applying multiple aspheric surfaces
Figures & Tables(15)
Fig. 1. Schematic diagram of coordinate conversion when light is reflected by a secondary cone surface
Fig. 5. The imaging performance of fisheye lens changing with the coefficient of aspherical surface
Fig. 6. Wave aberration distribution when the ninth surface is aspheric
Fig. 8. The optimized MTF curve when the 9th surface is used as an aspheric surface
Fig. 9. The
Fig. 10. The distribution of the system wave aberration when the 8th and 9th surfaces are used as aspherical surfaces
Fig. 11. The optimized MTF curve when the 8th and 9th surfaces are used as aspherical surfaces
Table 1. Optical parameters of all spherical fisheye lens
View tableView in ArticleTable 1. Optical parameters of all spherical fisheye lens
Surface Radius/mm Distance/mm Index Glass Original Optimize Ⅰ Original Optimize Ⅰ 1 143.470 169.251 7.000 8.507 1.51680 N-BK7 2 52.500 76.911 28.000 30.260 3 76.400 79.352 3.800 5.050 1.51680 N-BK7 4 31.521 29.155 21.800 18.999 5 150.000 153.609 3.000 3.096 1.51680 N-BK7 6 17.100 19.982 16.500 16.863 7 −60.000 −42.244 7.000 7.112 1.62090 SK51 8 22.625 22.019 0.600 0.627 9 23.900 24.609 12.600 14.723 1.72825 SF10 10 78.988 91.867 29.600 33.059 11 278.333 300.637 3.000 2.980 1.64831 SF12 12 −185.420 −136.980 0.100 0.095 13 52.030 53.232 7.000 7.933 1.52330 D263TECO 14 −28.500 −23.122 2.000 2.515 1.77314 LAFN28 15 −77.000 −57.693 13.000 10.642 STO Infinity Infinity 2.000 2.104 16 45.000 56.436 6.000 7.205 1.51820 K3 17 −14.400 −9.528 0.600 0.809 1.80610 P-LASF47 18 −34.500 −25.746 0.100 0.107 19 −110.000 −103.519 1.000 1.124 1.71736 SF1 20 35.000 41.208 3.500 3.977 1.51680 N-BK7 21 −27.763 −16.762 42.029 28.260
Table 2. The initial
Q value of the system and the correspondingQ value of the aspheric coefficientView tableView in ArticleTable 2. The initial
Q value of the system and the correspondingQ value of the aspheric coefficient参数 初始 非球面优化 Surf. — 6 8 9 a2 — −0.897 −0.878 −1.109 Q/mm2 0.018501 0.009519 0.009105 0.008974
Table 3. Optics parameters of the system after adding aspheric surface optimization
View tableView in ArticleTable 3. Optics parameters of the system after adding aspheric surface optimization
Surface Radius/mm Distance/mm Aspheric coefficient/ (a2) Optimized Ⅱ Optimized Ⅲ Optimized Ⅱ Optimized Ⅲ Optimized Ⅱ Optimized Ⅲ 1 189.021 101.849 6.924 5.710 −1 −1 2 52.633 42.464 25.209 36.714 −1 −1 3 74.446 62.090 3.780 3.317 −1 −1 4 41.743 26.524 26.698 16.269 −1 −1 5 152.046 183.382 3.133 2.984 −1 −1 6 16.791 14.557 18.466 14.253 −1 −1 7 −45.165 −44.463 7.719 7.647 −1 −1 8 29.832 22.639 0.712 0.469 −1 −1.646 9 28.096 22.000 16.312 10.487 −1.194 −1.092 10 96.992 82.475 40.457 25.311 −1 −1 11 278.580 179.113 3.033 2.189 −1 −1 12 −172.015 −152.798 0.084 0.074 −1 −1 13 61.101 42.159 8.237 4.467 −1 −1 14 −20.352 −25.056 1.986 2.421 −1 −1 15 −58.557 −63.236 16.189 6.488 −1 −1 STO Infinity Infinity 2.151 2.182 −1 −1 16 49.891 31.733 6.344 7.478 −1 −1 17 −11.826 −8.615 0.591 0.602 −1 −1 18 −26.717 −28.284 0.132 0.080 −1 −1 19 −121.931 −147.334 1.160 0.720 −1 −1 20 41.500 28.339 3.313 3.283 −1 −1 21 −22.260 −14.176 30.120 22.680 −1 −1
Table 4. The minimum
Q value and the corresponding aspheric coefficient obtained from the combination of two optical surfacesView tableView in ArticleTable 4. The minimum
Q value and the corresponding aspheric coefficient obtained from the combination of two optical surfaces参数 6-8面组合 6-9面组合 8-9面组合 Surf. 6 8 6 9 8 9 a2 −1.189 −0.627 −1.159 −1.269 −0.358 −0.544 Q/mm2 0.007089 0.007154 0.006913
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Bingbing GAO, Lijun LYU, Tao ZENG. A method for optimizing fisheye lenses by applying multiple aspheric surfaces[J]. Optical Instruments, 2022, 44(3): 44
Paper Information
Category: OPTICAL SYSTEM
Received: Dec. 28, 2021
Accepted: Feb. 21, 2022
Published Online: Jul. 8, 2022
The Author Email: LYU Lijun (lulijun@shu.edu.cn)
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