对凝视红外热成像冷反射现象的研究

The Narcissus Study in the Optical System for the Infrared Staring Arrays

冷反射现象是在红外热成像系统中制冷的探测器通过前面的光学表面反射而探测到自身的像形成的。控制冷反射是设计红外扫描系统的一个重要指标。在一些光线追迹软件中有对红外扫描系统冷反射的分析工具,却没有优化、分析凝视阵列冷反射的工具。为了控制凝视红外系统的冷反射,一般通过非均匀校正来补偿,但这只对应某一特定的状态校正。当相对于已校正状态的一些条件变化时,冷反射又会重现。通过类比于红外扫描系统,分析了凝视系统的冷反射,并用code v给出了实例。

Narcissus is the cold imaging sensor of infrared-systems seeing itself by the reflection of the frontal optical surfaces. Control of narcissus is one of important requirements in the designing of the infrared systems. There are some optical raytrace programs for analyzing narcissus of scanning infrared systems ,but those tools are not used for staring infrared systems. Calibration generally was adopted to complement the narcissus of staring infrared system which only offset for one special station. When the terms was changed comparing with the offset station, narcissus would be appeared again. By had been analogizing the narcissus of the scanning infrared systems, the narcissus of the staring infrared systems had analyzed. And an example had been given by program of code v.