超长线列碲镉汞探测器组件的冷头结构设计

Structure Design of Cold Head for Ultra-Long Linear HgCdTe Detector Assembly

随着大规模线列探测器不断实现空间应用,具有大范围、高分辨率红外扫描探测与目标捕获能力的超长线列拼接探测器的应用需求变得越来越广泛。超长线列碲镉汞红外探测器组件的阵列规模及几何尺寸较大,导致探测器冷头结构的低温热失配问题被放大。为获得满足低温可靠性及严苛成像需求的冷头结构,开展了相关冷头结构设计优化方法研究以及获取实物的试验验证工作,并通过试验验证工作证明本研究采用的结构设计优化方法适用于复杂的大尺寸冷头结构设计。

With the increasing space applications of large-scale linear detectors,the application requirements for ultra-long linear splicing detectors that can perform infrared scanning detection and capture targets with large range and high resolution are becoming more and more extensive.The large scale and geometric dimensions of the HgCdTe infrared detector assembly with ultra-long linear arrays have caused the problem of low-temperature thermal mismatch of the cold head structure of the detector to be magnified.In order to obtain the cold head structure that can meet the low temperature reliability and strict imaging requirements,the research on the optimization method of the relevant cold head structure design and the experimental verification work of obtaining the actual object have been carried out.The experimental verification work has proved that the structural design optimization method in this study is applicable for the complex design of large-size cold head structure.