The laser lighting in the laser night vision PTZ camera, as an auxiliary lighting source, has the advantages of high luminous efficiency, low power consumption and long irradiation distance. By controlling the beam divergence Angle, the laser zoom illuminator can achieve clear illumination of targets at different distances. At short distance, the light energy loss is less, the beam divergence Angle is increased, and the irradiation range is wide. At long distance, the beam divergence Angle becomes smaller and the light energy is concentrated.
High-power laser night vision PTZ camera, image effect is good, clearly visible. The monitoring distance is far, the versatility is strong, the adaptability to the environment is strong, the service life is long, the risk is low. The distance of different power laser illuminators is not the same, therefore, the laser night vision PTZ camera to see the face at night depends on two major factors: the power of the laser and the distance of the face. Due to the relatively small proportion of the face in the entire monitoring screen, the laser power required to see the face is very large. According to experience, a laser night vision PTZ camera that irradiates 1500 meters can see the distance of a person's face at about 500 meters.