Infrared and Laser Engineering, Volume. 50, Issue 8, 20210053(2021)
Study on simulation technology of multi-color temperature and multi-magnitude starlight source
Figures & Tables(18)
Fig. 5. Illuminance formed by the surface light source on the surface at the distance
Fig. 11. Spectral fitting curve of 5 500 K color temperature for 2nd magnitude sta
Table 1. Irradiance at the exit of the collimator
View tableView in ArticleTable 1. Irradiance at the exit of the collimator
Color temperature magnitude 3 000 K/ (W/m2) 4 300 K/ (W/m2) 5 500 K/ (W/m2) 6 500 K/ (W/m2) 7 600 K/ (W/m2) 20 000 K/ (W/m2) +2Mi 4.29×10−9 2.81×10−9 2.47×10−9 2.36×10−9 2.32×10−9 2.37×10−9 +3Mi 1.71×10−9 1.12×10−9 9.82×10−10 9.40×10−10 9.22×10−10 9.42×10−10 +4Mi 6.79×10−10 4.46×10−10 3.91×10−10 3.74×10−10 3.67×10−10 3.75×10−10 +5Mi 2.70×10−10 1.77×10−10 1.56×10−10 1.49×10−10 1.46×10−10 1.49×10−10 +6Mi 1.08×10−10 7.06×10−11 6.20×10−11 5.93×10−11 5.82×10−11 5.95×10−11 +7Mi 4.28×10−11 2.81×10−11 2.47×10−11 2.36×10−11 2.32×10−11 2.37×10−11 +8.5Mi 1.08×10−11 7.06×10−12 6.21×10−12 5.92×10−12 5.81×10−12 5.94×10−12
Table 2. Radiance at the exit of the integrating sphere
View tableView in ArticleTable 2. Radiance at the exit of the integrating sphere
Color temperature magnitude 3 000 K /W/(m2·sr) 4 300 K /W/(m2·sr) 5 500 K /W/(m2·sr) 6 500 K /W/(m2·sr) 7 600 K /W/(m2·sr) 20 000 K /W/(m2·sr) +2Mi 307.31 201.29 176.93 169.05 166.19 169.77 +3Mi 122.49 80.23 70.34 67.33 66.05 67.48 +4Mi 48.64 31.95 28.01 26.79 26.29 26.86 +5Mi 19.34 12.68 11.18 10.67 10.46 10.67 +6Mi 7.71 5.06 4.44 4.25 4.17 4.26 +7Mi 3.07 2.01 1.77 1.69 1.66 1.70 +8.5Mi 0.774 0.506 0.445 0.424 0.416 0.426
Table 3. Advantages and disadvantages of the five algorithms
View tableView in ArticleTable 3. Advantages and disadvantages of the five algorithms
Number Algorithm Advantages Disadvantages 1 Genetic algorithm Main steps of the genetic algorithm include selection, crossover and mutation. It can be seen that the algorithm has a simple structure, does not rely on complex models, and has no requirements on the continuity and differentiability of the objective function It has the local search ability, but the global search ability is not strong, and it is easy to fall into the local optimal 2 Ant colony algorithm Results obtained by ant colony algorithm do not depend on the choice of the initial route, and its parameters are few, the setting is simple and easy to be combined with other algorithms There is no clear theoretical basis for the parameter setting of ant colony algorithm, most of which is determined by experience and experiment 3 Quantum particle swarm optimization Global convergence is good, the global search ability is strong, the particle position is random, will not fall into the global optimal solution, the algorithm itself execution time is short Difficulty in parameter selection 4 Least square method Calculation is simple and easy to be realized by simple program of computer Least square method is a linear estimation with certain limitations and low optimization accuracy. In the process of regression, it is impossible for the correlation formula of regression to pass every regression data point 5 Simulated annealing algorithm Calculation process is simple, universal and has strong sculling ability. It is suitable for parallel processing and can be used to solve complex nonlinear optimization problems Algorithm convergence speed is slow, the running time is long, the algorithm performance is related to the initial value, the parameter is sensitive
Table 4. Spectral matching error
View tableView in ArticleTable 4. Spectral matching error
Magnitude color temperature +2Mi +3Mi +4Mi +5Mi +6Mi +7Mi +8.5Mi 3 000 K 2.40% 2.25% 2.53% 2.08% 2.17% 2.82% 3.87% 4 300 K 2.67% 2.95% 3.23% 3.56% 3.40% 3.98% 4.58% 5 500 K 3.51% 3.96% 4.54% 4.82% 5.40% 5.93% 6.14% 6 500 K 3.75% 4.11% 4.96% 4.87% 5.92% 6.23% 6.74% 7 600 K 3.65% 4.56% 5.03% 5.45% 6.33% 6.87% 7.10% 20 000 K 5.10% 5.90% 6.70% 8.10% 8.80% 9.60% 9.80%
Table 5. Measured radiance
View tableView in ArticleTable 5. Measured radiance
Color temperature magnitude 3 000 K/ W/(m2·sr) 4 300 K/ W/(m2·sr) 5 500 K/ W/(m2·sr) 6 500 K/ W/(m2·sr) 7 600 K/ W/(m2·sr) 20 000 K/ W/(m2·sr) +2Mi 307.26 200.05 179.31 167.12 163.54 167.49 +3Mi 123.23 81.98 69.01 69.03 64.68 65.21 +4Mi 48.02 30.56 27.01 26.06 26.92 27.77 +5Mi 19.86 13.22 11.67 11.10 10.09 10.28 +6Mi 7.46 5.21 4.26 4.00 3.99 4.54 +7Mi 3.17 1.94 1.68 1.78 1.75 1.79 +8.5Mi 1.27 0.844 0.666 0.711 0.698 0.714
Table 6. Magnitude simulation accuracy
View tableView in ArticleTable 6. Magnitude simulation accuracy
Color temperature magnitude 3 000 K/ W·(m2·sr) 4 300 K/ W/(m2·sr) 5 500 K/ W/(m2·sr) 6 500 K/ W/(m2·sr) 7 600 K/ W/(m2·sr) 20 000 K/ W/(m2·sr) +2Mi 0.84% −0.97% 1.31% −1.11% −1.48% −1.47% +3Mi 1.00% 2.22% −1.97% 2.42% −2.15% −3.39% +4Mi −1.40% −4.2% −3.53% −2.76% 2.35% 3.23% +5Mi 2.37% 4.09% 4.20% 3.74% −3.90% −3.93% +6Mi −3.24% 2.96% −4.05% 4.25% 4.17% 4.26% +7Mi 3.26% −3.48% −5.08% 5.33% 5.42% 5.29% +8.5Mi 4.10% 5.24% −5.40% 5.49% 5.76% 5.78%
Table 7. Radiance after 6 hours of continuous work
View tableView in ArticleTable 7. Radiance after 6 hours of continuous work
Time Radiation brightness /W/(m2·sr) 9:00 10.73 10:00 10.88 11:00 11.01 12:00 10.91 13:00 10.75 14:00 10.84
Tools
Get Citation
Copy Citation Text
Lingyun Wang, Guangxi Li, Yue Ma, Ru Zheng, Xiao Liu, Haoyang Li, Yuxin Du. Study on simulation technology of multi-color temperature and multi-magnitude starlight source[J]. Infrared and Laser Engineering, 2021, 50(8): 20210053
Paper Information
Category: Optical design
Received: Apr. 10, 2021
Accepted: --
Published Online: Nov. 2, 2021
The Author Email:
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20