Laser & Optoelectronics Progress, Volume. 60, Issue 9, 0922002(2023)
Optical System Design of Broadband Hyperspectral Cameras Based on Linear Variable Filter
Figures & Tables(17)
Fig. 7. Dispersion coefficient and vector of each lens of optimized optical system
Table 1. Design parameters of optical system
View tableTable 1. Design parameters of optical system
Parameter Value Wavelength range 400-1000 nm Focal length 100 mm F-number 5 Field of view ±7.1° MTF >0.3@118 lp/mm Distortion <0.06%
Table 2. Ray-tracing parameters of initial optical system
View tableTable 2. Ray-tracing parameters of initial optical system
Number Glass ϕj /mm-1 yi /mm N0 αj η1 η2 1 H-FK61 0.015 9.624 1.4942 1.4436 0.0400 0.0037 2 H-FK71 0.018 9.003 1.4542 1.5159 0.0362 0.0042 3 H-BaF5 0.024 8.103 1.5995 1.6373 0.0703 0.0051 4 H-ZBaF21 0.031 6.596 1.7151 1.4014 0.0797 0.0122 5 H-QF56 0.047 5.981 1.5615 1.7470 0.0718 0.0065 6 H-ZF72A 0.006 4.902 1.9027 0.1496 0.1476 0.0604 7 H-ZF50 0.031 2.932 1.7294 0.2769 0.1050 0.0296 8 H-ZBaF20 0.019 2.884 1.6940 0.1642 0.0742 0.0091 9 H-ZPK1A 0.017 2.833 1.6135 0.1418 0.0509 0.0022
Table 3. Ray-tracing parameters of optimized optical system
View tableTable 3. Ray-tracing parameters of optimized optical system
Number Glass ϕj /mm-1 yi /mm N0 αj η1 η2 1 H-FK61 0.015 10.005 1.4942 1.5007 0.0400 0.0037 2 H-FK71 0.018 9.307 1.4542 1.5583 0.0362 0.0042 3 H-QF50 0.023 8.355 1.5752 1.6047 0.0753 0.0064 4 H-ZBaF21 0.031 6.692 1.7151 1.3875 0.0797 0.0122 5 TF3 0.051 6.008 1.6062 1.8399 0.0719 0.0015 6 H-ZF72A 0.007 5.050 1.9027 0.1674 0.1476 0.0604 7 H-ZF50 0.031 2.944 1.7294 0.2685 0.1050 0.0296 8 H-ZBaF20 0.019 2.892 1.6940 0.1588 0.0742 0.0091 9 H-ZPK1A 0.017 2.843 1.6135 0.1373 0.0509 0.0022
Table 4. Tolerance assignment of surfaces
View tableTable 4. Tolerance assignment of surfaces
Tolerance item Value Radius /fringes 1 Thickness /mm 0.01 Decenter（X/Y）/mm 0.01 Tilt（X/Y）/（°） 0.0042 S+A irregularity /fringes 0.2
Table 5. Tolerance assignment of components
View tableTable 5. Tolerance assignment of components
Parameter Value Decenter（X/Y）/mm 0.01 Tilt（X/Y）/（°） 0.01 Index of refraction 0.0003 Abbe number /% 0.5
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Yazhen Cui, Chunyu Liu, Yunqiang Xie, Minglin Xu. Optical System Design of Broadband Hyperspectral Cameras Based on Linear Variable Filter[J]. Laser & Optoelectronics Progress, 2023, 60(9): 0922002
Paper Information
Category: Optical Design and Fabrication
Received: Mar. 31, 2022
Accepted: May. 23, 2022
Published Online: May. 9, 2023
The Author Email: Liu Chunyu (mmliucy@163.com)
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