激光技术2025，Vol.49Issue(3)：417-423,7.DOI:10.7510/jgjs.issn.1001-3806.2025.03.015
激光侦毒雷达折衍型长波接收光学系统设计
Design of long-wave receiving optical system of toxicant LiDAR with refractive-diffractive structure
摘要
Abstract
In order to improve detection range and environmental adaptability of a toxicant light detection and ranging(LiDAR),a long-wave receiving optical system with refractive-diffractive structure was designed by using passive athermalization.By utilizing unique chromatic aberration characteristics of a binary diffraction surface,the chromatic aberration and secondary spectrum of optical system were corrected.Under the condition that the working wavelength was from 9 μm to 11 μm,focal length was 270 mm,F number was 2.27,and optical efficiency was higher than 86.6%,tolerance analysis was conducted with Monte Carlo statistical method.By conducting temperature and flight tests to measure the key technical indicators,the simulation results and design rationality were verified.The results show that the wavefront root mean square of optical system is 0.03λ,and the modulation transfer function is higher than 0.47 in the temperature range of-40℃～60℃,so the image quality is excellent.In flight test,the maximum detection distance of toxicant LiDAR that applies this optical system reaches 4.05 km.The result is superior to system requirements,so the designed optical system is qualified.The study provides positive effects on development of laser active telemetry radar for biochemical environment.关键词
激光技术/激光雷达/光学系统设计/验证试验/二元衍射面Key words
laser technique/light detection and ranging/optical system design/verification test/binary diffraction surface分类
电子信息工程引用本文复制引用
彭涛,姜勇,杜赛,陈涌,李晓锋,李晶,周鼎富..激光侦毒雷达折衍型长波接收光学系统设计[J].激光技术,2025,49(3):417-423,7.基金项目
四川省XX科技工业领域攻关项目 （）
