镜头分离式CCD液氮杜瓦传热设计

Theoretical Calculations for Liquid Nitrogen Dewar in Separate CCD Camera

设计了一种镜头分离式CCD液氮杜瓦,主要应用于天文望远镜成像系统中,利用相变制冷为CCD探测器提供适合的工作温度和可靠的环境保护的支撑和封装。文章通过对液氮存储器到CCD探测器装载平台之间的热桥进行理论计算,并与实测值进行比较,得出修正值,应用到结构调整中,生产出了满足需求的产品。

Liquid nitrogen dewar of the separate CCD camera is mainly used in astronomical telescope imaging system,using phase-change cooling to provide suitable working temperature and reliable environmentally protective support and packaging for the CCD detector. The thermal bridge between the liquid nitrogen storage and the loading platform of the CCD detector is theoretically calculated and compared with the measured value to obtain a revised value. Then it can be applied to make structural adjustment,obtaining products which are suitable for practical applications.