Infrared and Laser Engineering, Volume. 50, Issue S2, 20210215(2021)
Surface response correction method of light intensity detector in high energy laser measurement
Figures & Tables(11)
Fig. 1. The diagram of the correction device for the surface response non-uniformity of the light intensity detector
Fig. 4. Schematic diagram of illumination uniformity at the calibration position of the detector
Fig. 5. Simulation results of the uniformity of the corrected light source
Fig. 6. Distribution before and after correction of ten percent of approximate CCD full gray: (a) Row direction; (b) Column direction
Fig. 7. Distribution before and after correction of fifty percent approximate of CCD full gray: (a) Row direction; (b) Column direction
Fig. 8. Distribution before and after correction of ninety percent of approximate CCD full gray: (a) Row direction; (b) Column direction
Fig. 9. Comparison of correction results between the two-point method and the proposed method: (a) Row direction; (b) Column direction
Table 1. Parameters of integral ball
View tableView in ArticleTable 1. Parameters of integral ball
Parameter of first integrating sphere Inner diameter of integrating sphere/mm Size of light entrance/mm Diameter of one-time baffle/mm Size of light exit/mm Φ150 Φ12 Φ15 Φ30 Parameter of second integrating sphere Inner diameter of integrating sphere/mm Size of light entrance/mm Size of light exit/mm Φ150 Φ30 Φ40
Table 2. Comparison of modulation degree and contrast before and after correction
View tableView in ArticleTable 2. Comparison of modulation degree and contrast before and after correction
Source intensity CCD average value Uncorrection Correction Modulation degree Contrast Modulation degree Contrast 1 429 1.08 0.017 1.05 0.011 2 510 1.07 0.016 1.05 0.009 3 584 1.07 0.015 1.05 0.009 4 667 1.07 0.015 1.04 0.008 5 746 1.11 0.015 1.04 0.008 6 830 1.17 0.015 1.04 0.007 7 911 1.21 0.015 1.03 0.007 8 995 1.24 0.014 1.03 0.007 9 1082 1.27 0.015 1.03 0.007 10 1165 1.29 0.014 1.03 0.006 11 1258 1.28 0.015 1.03 0.006 12 1344 1.32 0.015 1.04 0.006 13 1428 1.34 0.014 1.05 0.006 14 1518 1.34 0.015 1.05 0.006 15 1607 1.36 0.014 1.06 0.005 16 1695 1.37 0.014 1.06 0.005 17 1870 1.39 0.014 1.07 0.005 18 1960 1.39 0.014 1.07 0.005 19 2052 1.41 0.014 1.08 0.005 20 2145 1.41 0.014 1.08 0.005 21 2232 1.40 0.0143 1.07 0.005 22 2322 1.41 0.014 1.08 0.005 23 2415 1.40 0.014 1.07 0.005 24 2511 1.42 0.014 1.08 0.004 25 2602 1.42 0.014 1.08 0.004 26 2696 1.42 0.014 1.08 0.004 27 2785 1.42 0.014 1.08 0.004 28 2880 1.42 0.014 1.08 0.004 29 2977 1.38 0.015 1.05 0.004 30 3062 1.34 0.014 1.02 0.004 31 3160 1.30 0.014 1.02 0.004 32 3254 1.26 0.014 1.02 0.004 33 3351 1.22 0.015 1.02 0.004 34 3447 1.19 0.015 1.02 0.004 35 3534 1.11 0.014 1.02 0.004 36 3635 1.11 0.014 1.02 0.004
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Fang Xue, Yongquan Chen, Yaxuan Duan, Hui Lin, Zhengshang Da. Surface response correction method of light intensity detector in high energy laser measurement[J]. Infrared and Laser Engineering, 2021, 50(S2): 20210215
Paper Information
Category: Photoelectric measurement
Received: Apr. 2, 2021
Accepted: --
Published Online: Dec. 3, 2021
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