双DMD变焦红外双波段场景模拟器光学引擎设计
投稿时间:2017-11-01  修订日期:2018-03-04  点此下载全文
引用本文:潘 越,徐熙平,乔 杨.双DMD变焦红外双波段场景模拟器光学引擎设计[J].红外与毫米波学报,2018,37(4):437~444].PAN Yue,XU Xi-Ping,QIAO Yang.Design of optical engine for zoom infrared two-band scene simulator based on dual-DMD[J].J.Infrared Millim.Waves,2018,37(4):437~444.]
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作者单位E-mail
潘 越 长春理工大学 光电工程学院 jilinpy@163.com 
徐熙平 长春理工大学  
乔 杨 长春理工大学  
基金项目:国家自然科学基金青年科学基金(61605016)资助项目
中文摘要:为仿真现实场景中目标和干扰的光谱分布差异, 设计了一种基于双数字微镜器件 (DMD, Digital Micro-mirror Device) 的双通道、共口径、变焦光学引擎, 包括投影光学系统和两套照明光学系统.光学引擎以红外中波和长波柯勒远心光路分别直接照明两DMD靶面, 采用空间立体布局避免不同光路间干扰.设计结果表明:照明光学系统的照度均匀性优于94%;中波 (3.74.8μm) 和长波 (812μm) 内, 变焦投影光学系统在10 1p/mm处的调制传递函数 (MTF, Modulation Transfer Function) 值分别优于0.7和0.4;系统畸变小于0.5%, 满足使用要求.
中文关键词:光学设计  红外仿真  数字微镜器件(DMD)  双波段  光学引擎
 
Design of optical engine for zoom infrared two-band scene simulator based on dual-DMD
Abstract:In order to simulate the spectral distribution difference betw een the target and the interference in real scene, a zoom optical engine w ith tw o channels and the same caliber has been designed based on dual digital micro-mirror device ( DM D) , it includes projection optical system and tw o illumination optical systems. The optical engine directly illuminates tw o DM D target surfaces respectively w ith long-w ave infrared ( LWIR) and mid-w ave infrared ( M WIR) Kohler telecentric beam. It uses spatial stereoscopic layout to get avoid of interference betw een different optical paths. The design result show s that the illuminance uniformity of illumination optical system is better than 94%. The modulation transfer function ( M TF) values of zoom projection optical system are better than 0. 4 and better than 0. 7 at 101 p/mm respectively in bands of LWIR ( 8 ~ 12 μm) and M WIR ( 3. 7 ~ 4. 8 μm) . And the distortion is better than 0. 5%, w hich meet the requirements.
keywords:optical design, infrared simulation, dual digital micro-mirror device(DMD), two-band, optical engine
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