基于DMD的红外目标模拟器偏振分光系统  

Infrared target simulator′s polarizing beamsplitter system based on digital-micromirror device

作　　者：孙永雪[1] 龙夫年[1] 孟庆宇[2] 赵晓[3] 王超[1] 周军[1] 

机构地区：[1]哈尔滨工业大学空间光学工程研究中心,黑龙江哈尔滨150001 [2]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [3]上海卫星工程研究所,上海200240

出　　处：《红外与激光工程》2014年第3期749-753,共5页Infrared and Laser Engineering

摘　　要：数字微镜器件(Digital Micromirror Device,DMD)由于具有高帧频、高空间分辨率、高温度分辨率以及大动态范围等特点,成为红外景象生成最常用器件。为避免红外目标模拟器光学系统中照明系统与投影系统相互遮挡和碰撞,需要在系统中加入分光棱镜,而普通分光棱镜具有光能利用率低的缺点。为解决这一问题,提高红外目标模拟器光能效率,从物理光学基本理论出发,提出了一种基于偏振原理的分光方法并设计了偏振棱镜,大大提高了系统的光能利用率,得到了满意结果。Digital-micromirror device has became the most popular device to create infrared image, because of its characteristics as high frame frequency, high spatial and temperature resolution and wide dynamic range. In order to avoid the occlusion and collision between the illumination system and the projection system in the infrared target simulator, a beam splitter prism need to be added, while the ordinary beam splitter prisms have the disadvantage of low light utilization. To solve this problem and improve the light energy efficiency of infrared target simulator, a new splitting method was given based on polarizing principle from physical optics basic theories, and a polarizing prism was designed. Light energy utilization was improved greatly, and satisfactory results were obtained.

关 键 词：红外目标模拟器 分光系统 偏振分光 

分 类 号：TN216[电子电信—物理电子学]