| 高分辨率微型星载相机光学系统的设计及应用 |
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| 引用本文： | 陈玉芳,吴振聪,王敏.高分辨率微型星载相机光学系统的设计及应用[J].应用光学,2020,41(2):235-241. |
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| 作者姓名： | 陈玉芳 吴振聪 王敏 |
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| 作者单位： | 福建师范大学 光电与信息工程学院 医学光电科学与技术教育部重点实验室，福建 福州 350007 |
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| 基金项目： | 中央引导地方科技发展专项(2017L3009);福建省科技厅项目(2018G32)。 |
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| 摘 要： | 为了克服太空环境的复杂性，满足航天工程的空间使用要求，研制一款2 500万像素宽光谱共焦成像的微型星载相机光学系统。该系统适应卫星发射和在轨道运行的恶劣环境，具有抗冲击震动、耐太空高温差强辐射，体积小，质量轻等优点。设计的系统可在450 nm～800 nm的谱段内清晰成像，焦距181 mm，入瞳口径45 mm，视场角10.4°，边缘相对照度0.81，轴上点MTF:0.57@55 lp/mm，0.33@110 lp/mm，畸变1.2%，镜头质量622 g，外形尺寸Φ58.3 mm×117 mm，抗辐照性能≥5 krad。通过温度适应性的模拟和优化，用户进行?30 ℃～+70 ℃光学镜头热真空试验，可正常工作。该系统已成功应用于天宫二号伴飞卫星相机中，获得的图像清晰稳定，为空间遥感实验观测发挥了重要的作用。
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| 关 键 词： | 光学设计 星载相机 共焦成像 多光谱 高分辨率 |
| 收稿时间： | 2019-05-20 |
Design and application of optical system for high-resolution micro space-borne camera |
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| CHEN Yufang,WU Zhencong,WANG Min.Design and application of optical system for high-resolution micro space-borne camera[J].Journal of Applied Optics,2020,41(2):235-241. |
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| Authors: | CHEN Yufang WU Zhencong WANG Min |
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| Affiliation: | Key Laboratory of Optoelectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350007, China |
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| Abstract: | In order to overcome the complexity of the space environment and meet the space operating requirements of the space engineering,a micro space-borne camera optical system of 25-megapixel widespectrum confocal imaging was developed.This system adapted to the harsh environment of satellite launch and orbit operation,which had the advantages of impact shock resistance,high temperature and differential radiation resistance in space,small size and light weight.The designed system can be clearly imaged in the spectrum of 450 nm-800 nm,of which the focal length is 181 mm,the entrance pupil diameter is 45 mm,the field angle is 10.4°,the edge relative illumination is 0.81.The modulation transfer function(MTF)is 0.57 at55 lp/mm and 0.33 at 110 lp/mm,the distortion is 1.2%,the quality of lens is 622 g,the overall dimension isΦ58.3 mm×117 mm and the anti-radiation performance is more than 5 krad.Through the simulation and optimization of the temperature adaptability,the user can perform the thermal vacuum test of-30℃^+70℃optical lens normally.This system is successfully applied to the accompanying satellite camera of Tiangong-2 space lab,the obtained images are clear and stable,which plays an important role in the space remote sensing experiment observation. |
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| Keywords: | optical design space-borne camera confocal imaging multispectral high resolution |
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