硅电荷耦合器件(CCD)以及电荷注入器件(CID)的发展,以及运用这些技术制成的可见和近红外两维凝视式焦平面,鼓舞了从事红外工作的人员去研究如何将这些技术应用于在3～5和8～14微米大气窗运转的热象仪。热图象的特点是对比度低,这就排除了直流耦合的电子扫描凝视式焦平面在红外波段的应用。在对比度低的情况下,直流耦合的凝视器件难以对探测器响应率的差异和热象的真实差异加以区别。制造实用的 The development of silicon charge-coupled devices (CCDs) and charge-injection devices (CIDs), as well as the visible and near-infrared two-dimensional gaze focal planes made using these technologies have encouraged people working in infrared to study how to apply these techniques to Thermal imager operating at 3 to 5 and 8 to 14 micron windows. Thermal images are characterized by low contrast, which precludes the application of dc-coupled electronically scanned gaze-type focal planes in the infrared band. In the case of low contrast, DC-coupled gaze devices have difficulty differentiating the difference between detector responsivity and the true difference in thermal images. Made practical