Infrared and Laser Engineering, Volume. 50, Issue 3, 20200277(2021)
Design of 4f emission optical system for underwater laser circumferential scanning
Figures & Tables(24)
Fig. 1. Sketch of torus window detection transmitting system design
Fig. 3. Scan beam envelops: (a), (c) side elevation and platform for toroidal window; (b), (d) side elevation and platform for 4
Fig. 10. Transmitting angle error of conformal window system in water
Fig. 11. Beam section spot after 20 m under water propagation：(a)- (e) Spot of plane window system; (f)-(j) Spot of conformal window system
Fig. 12. Spot energy distribution: (a)-(e) Spot energy distribution of plane window system; (f)-(j) Spot energy distribution of conformal window system
Table 1. [in Chinese]
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Former group parameter Value Latter group parameter Value Image height/mm 40 Image height/mm 40 f1/mm 37.615 f2/mm 22.370 Total length/mm ≤90 Total length/mm ≤60 Field/（°） ±28 Field/（°） ±41.799
Table 2. [in Chinese]
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Former group parameter Value Latter group parameter Value Image height/mm 40.000 Image height/mm 40.000 f1/mm 39.669 f2/mm 27.045 Total length/mm 90.000 Total length/mm 60.000 Field/（°） ±28 Field/（°） ±41.799
Table 3. [in Chinese]
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${\theta _1}$ Former group image height/mm ${\theta _2}$ Latter group image height/mm 0 0 0 0 8.4 5.826 12.540 5.903 14 9.743 20.900 9.863 19.6 13.729 29.259 13.706 28 19.990 41.799 19.932
Table 4. [in Chinese]
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Lens Surface Surface type Radius/mm Thickness/mm Material Semi-diameter/mm Stop Standard Infinity 20.000 Air 0.577 L1 1 Standard −64.875 7.999 H-BAK1 10.736 2 Standard 245.825 4.563 Air 14.397 L2 3 Standard −62.429 5.870 H-ZF7LA 15.940 4 Standard −28.195 1.844 Air 17.045 L3 5 Standard 83.148 8.000 H-BAK1 20.280 6 Standard −65.614 41.725 Air 20.513 Focus plane Standard Infinity 16.725 Air 20.000 L4 7 Standard 72.584 6.308 H-BAK1 20.196 8 Standard −178.896 1.000 Air 19.981 L5 9 Standard 35.081 7.426 H-ZF7LA 18.457 10 Standard 83.958 15.541 Air 16.967 L6 11 Standard 13.985 8.000 H-BAK1 8.067 12 Standard 22.229 10.000 Air 4.536 L7 13 Standard Infinity 5.000 H-BAK1 4.816 14 Standard Infinity 20000.000 Water 7.233 Image Standard Infinity 0.000 Water 11552.561
Table 5. [in Chinese]
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Lens Surface Surface type Radius/mm Thickness/mm Material Semi-diameter/mm Stop Standard Infinity 20.000 Air 0.577 L1 1 Standard −64.875 7.999 H-BAK1 10.736 2 Standard 245.825 4.563 Air 14.397 L2 3 Standard −62.429 5.870 H-ZF7LA 15.940 4 Standard −28.195 1.844 Air 17.045 L3 5 Standard 83.148 8.000 H-BAK1 20.280 6 Standard −65.614 41.725 Air 20.513 Focus plane Standard Infinity 15.812 Air 20.000 L4 7 Standard 76.049 6.190 H-BAK1 20.184 8 Standard −172.721 1.000 Air 19.982 L5 9 Standard 35.089 8.000 H-ZF7LA 18.487 10 Standard 76.462 16.200 Air 16.750 L6 11 Standard 12.782 7.798 H-BAK1 7.894 12 Standard 20.508 10.000 Air 4.523 L7 13 Toroidal −235.145 5.000 H-BAK1 4.710 14 Toroidal −160.000 20000.000 Water 7.117 Image Standard Infinity 0.0000 Water 11552.735
Table 6. [in Chinese]
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${\theta _1}$ X beam size/mm X divergence/mrad Ybeam size/mm Ydivergence/mrad 0 30.618 1.513 30.618 1.513 8.4 26.931 1.313 27.227 1.311 14 20.746 0.986 22.333 1.026 19.6 12.784 0.584 18.375 0.786 28 10.098 0.446 27.975 1.034
Table 7. [in Chinese]
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${\theta _1}$ X beam size/mm X divergence/mrad Y beam size/mm Y divergence/mrad 0 26.402 1.303 31.576 1.561 8.4 22.553 1.097 27.943 1.346 14 16.208 0.768 22.732 1.044 19.6 9.028 0.413 18.611 0.797 28 14.700 0.649 29.755 1.101
Table 8. [in Chinese]
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${\theta _1}$ Efficiency (plane window) Efficiency (conformal window) 0 47.0214% 46.9997% 8.4 47.0576% 47.0356% 14 47.1184% 47.0960% 19.6 47.1941% 47.1730% 28 47.2029% 47.2045%
Table 9. [in Chinese]
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${\theta _1}$ Efficiency (plane window) Efficiency (conformal window) 0 90.935% 90.893% 8.4 91.006% 90.963% 14 91.132% 91.088% 19.6 91.320% 91.276% 28 91.719% 91.679%
Table 10. [in Chinese]
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${\theta _1}$ Efficiency (plane window) Efficiency (conformal window) 0 95.803% 95.759% 8.4 95.878% 95.833% 14 96.011% 95.965% 19.6 96.210% 96.163% 28 96.629% 96.587%
Table 11. [in Chinese]
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Probability RMS spot radius/mm 0° 8.4° 14° 19.6° 28° 98%≤ 9.603 9.877 9.878 18.675 18.697 90%≤ 8.895 9.092 9.074 17.993 17.986 50%≤ 7.609 7.695 7.673 16.848 16.826 10%≤ 6.324 6.324 6.309 15.760 15.734 2%≤ 5.599 5.553 5.506 15.164 15.122
Table 12. [in Chinese]
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Probability RMS spot radius/mm 0° 8.4° 14° 19.6° 28° 98%≤ 8.713 12.909 12.969 22.557 22.596 90%≤ 7.949 12.026 12.057 21.775 21.792 50%≤ 6.584 10.507 10.521 20.498 20.511 10%≤ 5.260 9.036 9.071 19.305 19.332 2%≤ 4.537 8.241 8.263 18.683 18.684
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Kun Zhong, Wei Su, Bo Peng, Shaling Huang. Design of 4f emission optical system for underwater laser circumferential scanning[J]. Infrared and Laser Engineering, 2021, 50(3): 20200277
Paper Information
Category: Optical design
Received: Jul. 14, 2020
Accepted: --
Published Online: Jul. 15, 2021
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