亮度增益对夜视仪视距的影响

The Affect of Luminance Gain to Visual Range of LLL Night Vision Apparatus

亮度增益对夜视仪的视距有很重要的影响。夜视仪最重要也是最基本的作用就是改善微光条件下人眼的观察性能,产生足够亮度的光学图像供人眼观察。以前的视距公式没有考虑到亮度增益对视距的影响。从照度与人眼阈值分辨角的关系的角度出发,将亮度增益加入到了视距公式中,并根据修正出的公式从理论上分析了亮度增益对视距的影响。

The luminance gain has a great affect on the visual range of LLL night vision systems. It is the most important function for LLL night vision apparatus to improve eyes’ watching capability in the evening. The luminance gain didn’t be displayed in the earlier visual range equation. This thesis adds it to the equation of visual range considering the relation between illumination and threshold of eyes’ resolution angle. The affect of luminance gain to the visual range based on the revised equation was analyzed.