红外场景投射器双波段投影光学系统设计

Dual-band projection optical system design of infrared target simulator

为了使红外场景投射器投射出的红外场景更加逼真，设计了一入瞳距800mm、入瞳100mm和视场为±2．5°的双波段红外场景投射器投影光学系统。研究了红外场景投射器双波段投影光学系统的设计过程，分析了初始结构选择的方法。该系统可以模拟主要发出波长为3～5μm的高温物体和波长为8-12μm的常温物体，可以分别使用3～5μm波段红外探测器和8～12μm波段红外探测器进行观测，并对该系统进行了像质评价和公差分析。

For the infrared target which is simulated by infrared target simulator more realistic, the process of dualband projection optical system of infrared target simulator is investigated and the principles of the initial structure choice are analyzed. A dual-band projection optical system of infrared target simulator is presented, which entrance pupil and full field of view are 100mm, 5° respectively. There is sufficient exit pupil distance to match simulator exit pupil to the infrared imagery system entrance pupil. The system can simulate high temperature objects which wavelength at 8-12μm and normal temperature objects which wavelength at 3 - 5μm at the same time, it can be respectively measured by 3- 5μm band infrared detector and 8-12μm band infrared detector. The image evaluation and the tolerance analysis are performed.