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针对微光夜视系统可靠性试验的需要,在实验室准确模拟微光夜视系统在自然条件下所受的光应力具有重大意义。野外自然微光主要由月光、星光、大气辉光及杂散光经多次漫反射而成,所以在不同的环境条件下形成的自然微光不同。为模拟出不同的微光应力源,在试验过程中需要改变平行光管出瞳处的光照度,并使其对微光夜视系统的作用与自然微光对微光夜视系统的作用相当。在实验室条件下,当平行光管的视场大于微光夜视系统的视场时,通过改变光源光照度的办法即可改变平行光管出瞳处的光照度,从而实现自然微光应力源的精确模拟,并通过实验验证了该方法的可行性。
In order to meet the requirement of the reliability test of the glimmering night vision system, it is of great significance to accurately simulate the light stress suffered by the glimmering night vision system under the natural conditions in the laboratory. Natural gleam in the wild is mainly composed of moonlight, starlight, atmospheric glow and stray light, which are diffused and reflected many times. Therefore, natural gleam is formed under different environmental conditions. In order to simulate different glimmer stress sources, we need to change the illuminance at the exit pupil of the collimator during the experiment, and make the effect on the glimmering night vision system be equal to that of natural glimmer on the glimmering night vision system. Under laboratory conditions, when the field of view of the collimator is larger than the field of view of the glimpse of night vision system, the illuminance at the exit pupil of the collimator can be changed by changing the illuminance of the light source so as to realize the natural glimmer stress source The simulation is done accurately and the feasibility of this method is verified through experiments.