科研之友
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摘要
To overcome the shortage that the low light level (LLL) night vision system is easily affected by the environment, laser-aid illuminating system is integrated into the night vision system. Since the light source has been changed, the visual range formula and the spectrum matching coefficient must be updated with it. According to the spectrum distribution of the laser illuminator and the reflection parameter of the surroundings at night, the spectrum matching coefficient of the photocathode under the night is deducted. Also the affection to the intensity of the illuminator and the contrast are analyzed. All the analysis can instruct the visual range evaluation and the choice of laser-aid illuminating system laser.
