低温红外辐射源研究  

Study on low-temperature infrared radiator

作　　者：薛战理[1] 袁林光 吴沛[1] 陈娟[1] 

机构地区：[1]西安应用光学研究所,国防科技工业光学一级计量站,陕西西安710065

出　　处：《应用光学》2016年第4期623-627,共5页Journal of Applied Optics

摘　　要：随着空间红外探测、卫星遥感等技术的飞速发展,低温红外辐射源的需求日益迫切。研制了一种基于液体循环控温原理的低温红外辐射源。辐射源的工作温度范围为-60℃~50℃,控温精度达到0.01℃,有效发射率优于0.999 7。首先阐述了低温红外辐射源的设计原理,介绍了辐射源腔形设计,使用基于蒙特卡罗算法的软件STEEP3计算了辐射腔的有效发射率;接着对辐射腔内部温度特性进行了研究,实验结果表明低温红外辐射源辐射腔温度均匀性优于0.02℃,腔底温度稳定性优于0.05℃/h;最后通过与镓熔点黑体比较得到低温红外辐射源在29.76℃时的光谱发射率,与仿真计算结果一致。Low-temperature infrared radiators have been used widely with the rapid development of space infrared detection,satellite remote sensing.One kind of low-temperature infrared radiator based on liquid-circulation temperature control was developed.The range of radiant temperature for this radiator is-60 ℃~50 ℃,the temperature control accuracy reaches 0.01 ℃,and the effective emissivity is better than 0.999 7.First,the design principle of this radiator was described,and the structure characteristic for the radiation cavity was depicted,the calculation by using STEEP3 software based on the Monte-Carlo algorithm for emissivity was also given.The temperature characteristic for inner part of radiation cavity was then studied,the temperature uniformity of the inner cavity verified by valid testing was better than 0.02℃,the temperature stability for bottom of cavity was 0.05℃/h.Finally,the normal spectral emissivity of the radiator at the temperature of 29.76℃ was obtained by comparing its radiance with a gallium melting point blackbody,the experimental value was the same with the result calculated by STEEP3.

关 键 词：红外辐射源 低温 温度控制 发射率 

分 类 号：TN216[电子电信—物理电子学]