宽光谱红外定向发射器  

Wide spectral infrared directional projector

作　　者：邹凯[1] 杨锐[1] 路大举[1] 万敏[1] 葛成良[1] 

机构地区：[1]中国工程物理研究院应用电子学研究所,四川绵阳621900

出　　处：《红外与激光工程》2011年第8期1420-1424,共5页Infrared and Laser Engineering

摘　　要：由抛物面焦点发出的光线经抛物面反射后平行于抛物面的轴线出射。利用该原理研制了一种基于小尺寸、高温准黑体热源和环带型抛物面反射镜的宽光谱红外定向发射器。将小尺寸、高温准黑体辐射源置于抛物面的焦点处,采用多R共焦点环带型抛物面发射镜,对于大入射角光线,采用小R抛物面;对于小入射角光线,采用大R抛物面,获得了一定发散角的近似平行辐射。利用该发射器进行了性能测试实验,结果表明:该发射器能够有效地将小尺寸红外辐射体的辐射信号进行定向发射,在3°以内的发射效率约为66.7%,获得了近似准直的宽光谱红外辐射信号。Based on the small size, high temperature quasi blackbody and multi-zonal parabolic reflector, a kind of wide spectral infrared directional projector was developed using the principle that the light beam from source at the focus of paraboloid was reflected by paraboloid and transmitted in parallel with axis of paraboloid. The small size, high temperature quasi blackbody was located at the focus of paraboloid. The parabolic reflector consists of several zone-plates whose section plane along axial direction was parabolic curve, all these plates had different focus parameters and only one focus. For the big incident angle of light, paraboloid with small focus parameter was applied; for the small incident angle of light, paraboloid with big focus parameter was applied. Approximate parallel radiation of certain divergence angle was obtained. Experiment results show that the radiation of small infrared radiation source can be directionally reflected by the projector. Within project angle of 3°, the radiation efficiency is 66.7 percent. Therefore, quasi collimated infrared radiation signal with wide spectrum is obtained.

关 键 词：宽光谱红外定向发射器 环带型抛物面镜 发射效率 

分 类 号：TN976[电子电信—信号与信息处理]