【作者】 何兴伟； 吴亦农； 黄志光； 蒋珍华； 纪国林；

【Author】 HE Xing-wei WU Yi-nong HUANG Zhi-guang JIANG Zhen-hua JI Guo-lin (Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China)

【机构】 中国科学院上海技术物理研究；

【摘要】 红外相机为了获取较大温度范围内的红外图像,仅利用单探测器已难以满足需要,需在光学系统中实现波段分离,利用两个探测器来接收红外信号,且使用单台机械制冷机实现双探测器的制冷。利用现有的机械制冷机,并研制专用的冷箱及专用的传热冷链,组合成机械制冷系统,达到了预定的制冷温度,实现了双探测器的制冷,并与相机本体耦合,成功实现了双光路的配准。研究表明,该方案是可行的,今后还需进一步研究,以实现双探测器温度的精确控制。更多还原

【Abstract】 To extend the wavelength coverage of infrared space sensing missions,multiple detectors should be used to replace single detector to enable the highly capable imaging technologies.In this study,a mechanical cryocooler was designed to cool down dual channel infrared detectors.The cooler housing was mechanically coupled from the detector housing,with a set of flexible thermal straps for thermal coupling. Integrated with the previously manufactured cryocooler,the dual detectors were focused and registered successfully.The infrared imager was cooled and maintained to required temperature.The experiment results demonstrate the feasibility of dual channel infrared detectors coupled with a cryocooler.However, the further survey should be carded out to improve the precision of controlling detectors’ temperature.更多还原