光学精密工程2022，Vol.30Issue(19)：2295-2304,10.DOI:10.37188/OPE.20223019.2295
基于黑白光栅的宽波段大视场激光告警
Laser warning with broadband and large field of view based on black-white grating
摘要
Abstract
To realized laser-warning systems for high-precision detection with a broadband and large field of view,a wide field two-dimensional laser-warning detection system was presented based on broadband black-white grating diffraction. In addition,an optical system comprising a broadband black-white gratingand large field-of-view lens was designed. A five-group seven-element combined lens structure was ap-plied to achieve the large field-of-view detection with an azimuth angle of 95° and a pitch angle of 72°. The lens aperture was 2. 0,and the pupil diameter was 36 mm. These values ensured that the system exhibited a considerable amount of light transmission. Furthermore,a broadband black-white grating with a grating constant of 2. 5 μm(and duty cycle of 0. 6)was designed and processed,with broadband detection per-formed from 0. 5-1. 7 μm. Moreover,a multi-narrowband filter is added to the system to filter out back-ground-light interference. Finally,testing with lasers of typical wavelengths(532,1064,and 1550 nm), the angle error achieved by the system is better than 0. 7°,the laser center wavelength detection accuracy is better than 8 nm,thus verifying the feasibility of the method experimentally.关键词
激光告警/光学设计/宽波段黑白光栅/激光波长/高精度二维角度Key words
laser warning/optical design/broadband black-white grating/laser wavelength/high-preci-sion two-dimensional angle分类
机械制造引用本文复制引用
杨雪梅,张瑞,石金,吴琼,杜伟豪,王志斌,李孟委..基于黑白光栅的宽波段大视场激光告警[J].光学精密工程,2022,30(19):2295-2304,10.基金项目
国家自然科学基金资助项目(No.62105302) （No.62105302）
山西省自然科学基金资助项目(No.20210302124269,No.201901D111158,No.201901D111145) （No.20210302124269,No.201901D111158,No.201901D111145）
山西省创新项目(No.2019L0530) （No.2019L0530）
