1. The performance of infrared high-definition cameras. The worst case is also the most likely: the infrared high-definition camera performance is very poor, I have seen poor infrared high-definition cameras: 30 meters nominal can only see 5-10 meters, of course, there is no object near you, of course, everything Invisible. This situation can only be solved by changing the camera.
2, the single glass installed by general manufacturers, that is, the front cover of the infrared high-definition camera is the kind of glass. There is a ring of sponge outside the lens to prevent the light emitted by the infrared luminous tube from shining into the lens, thereby interfering with the normal imaging of the infrared high-definition camera. If it is white, it is almost the light interference formed by the ring of sponges not reaching the glass. The solution is to disassemble the front cover of the housing, raise the sponge, and then close the front cover.
3. It is possible that the infrared light is irradiated by the sunshade and reflected on the lens to cause light interference.
4. Pay attention to the installation environment, whether there is light interference in front of the infrared high-definition camera, which is also one of the factors that cause grayness and whiteness.
5. Another possibility is that when there is a lot of dust outdoors, especially in the wild, the infrared lamp with the infrared high-definition camera may capture the small particles that are invisible to the naked eye, and the infrared lamp does not turn on during the day. Under the circumstances, it is not obvious to the naked eye and infrared high-definition camera; this is the environment.