摘要
为了实现高精度、高可靠性的动态场景模拟,设计了一套短波中波多波段折反射式共口径光学系统。该系统结合了反射、折射和共口径光路的优势,该系统分为主光学系统、短波光学系统和中波光学系统,3个系统分别独立设计。通过理论计算得到光学系统的初始结构,再利用光学设计软件对光学参数作进一步细化,最后,按照光瞳匹配原则将各分系统组合在一起,并对系统的成像质量作进一步优化设计。利用调制传递函数(Modulation Transfer Function,MTF)和畸变等定量评价指标,仿真验证了系统设计的合理性。结果显示:所设计的短波光学系统视场角为±0.107°、焦距为2500 mm、入瞳尺寸为300 mm,MTF达到衍射极限,畸变小于0.3%;中波光学系统的视场角为±0.65°、焦距为750 mm、入瞳尺寸为300 mm,MTF接近衍射极限,畸变小于1%。该系统成像质量好、体积小、实用性强,在光电跟瞄和空间探测等领域具有较大应用潜力。
In order to simulate dynamic scenes with high accuracy and high reliability,a short-wave infrared(SWIR)and mid-wave infrared(MWIR)multiband catadioptric common-aperture optical system is designed.The system combines the advantages of reflection,refraction,and common-aperture optical paths.The system includes a main optical system,a short-wave optical system and a mid-wave optical system,all designed independently.The initial structure of the optical system is obtained according to theoretical calculation,and the optical parameters are further detailed by optical design software.Finally,the sub-systems are combined according to the principle of pupil matching.The system’s image quality is further optimized,and the system design's rationality is verified by the simulation of the modulation transfer function(MTF)and distortion.The designed short-wave optical system has a field angle of±0.107°,a focal length of 2500 mm,an entry pupil size of 300 mm,an MTF that reaches the diffraction limit,and less than 0.3%distortion.The mid-wave optical system has a field angle of±0.65°,a focal length of 750 mm,an entry pupil size of 300 mm,an MTF closes to the diffraction limit,and less than 1%distortion.The system has good image quality,small size and strong practicability.It has great application potential in the field of photoelectric tracking and space detection.
作者
马洪涛
韩冰
许洪刚
李旭
张明亮
MA Hong-tao;HAN Bing;XU Hong-gang;LI Xu;ZHANG Ming-liang(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;Changchun University of Science and Technology,Changchun 130022,China)
基金
吉林省与中国科学院科技合作高技术产业化专项资金项目(No.2023SYHZ0047)
2024年度长春市卫星及应用产业重大科技专项(No.2024WX03)。
作者简介
马洪涛(1980-),男,吉林长春人,硕士,副研究员,硕士生导师,2006年于哈尔滨工业大学航天学院获得工学硕士学位,主要从事航天光机系统设计、检测、装调方面的研究。E-mail:mhtgjs@163.com;韩冰(1981-),男,吉林长春人,博士研究生,正高级工程师,2004年于吉林大学物理学院获得理学学士学位,2024年于长春理工大学光电工程学院攻读博士学位,主要从事光学检测技术研究与检测设备研发工作。E-mail:hanbing@ciomp.ac.cn。
