Although infrared cameras are the dominant force in the night surveillance market, they are not as comfortable during the day, and the color cast of daytime surveillance images becomes one of the obstacles for infrared cameras to compete with ordinary cameras. In addition, fog and water vapor in infrared cameras have also become a focal point of concern for users.

There are several ways to solve problems such as fog and water vapor.

　　*In this situation, there is fog inside the machine:

The formation of fog and frost is due to the condensation of saturated water vapor in the air when it is cooled, which condenses into frost and fog respectively due to the strength and weakness of the cold environment. During the operation of infrared cameras, especially indoor cameras, fog or frost often forms on the protective cover window glass due to fog or water vapor, causing the camera to be unable to see objects clearly and directly affecting the monitoring effect.

The solutions to this problem vary among different families. Add defrosting circuit, open air vents, fill nitrogen gas, add fans, release desiccants, etc. Different methods result in different outcomes. Some can solve problems, while others still cannot. However, from a fundamental perspective, it is necessary to strictly control the cleaning of materials and minimize the presence of volatile substances. For example, there should be no residual soldering flux on the PCB board, and the shading rubber sleeve should be made of silicone material.

　　The second scenario is when frost or fog appears outside the machine:

The camera works in a high humidity environment, and the window glass of the protective cover is prone to dirt, causing the camera's line of sight to be obstructed.

Solution: 1. Add wipers to the protective cover and clean the glass by controlling the wipers. 2. Use invisible wiper window glass. Compared with ordinary window glass, invisible wiper window glass has functions such as repelling water and dust.

After Zui, some requirements for the sealing of the shell under high humidity conditions

If infrared waterproof cameras are applied in the north, there will be a large temperature difference between the inside and outside of the body, and the front lenses will experience fogging. Therefore, it is required that the machine must have good sealing inside, and the protective cover must also have good waterproof performance.

At present, there are certain technical issues with the sealing performance of mainland technology, such as the design of the casing, where water leakage often occurs at joints and screw interfaces.

How to improve the sealing performance? The basic solution is as follows:

1、 Add a waterproof rubber sleeve and a water drainage pad at the interface to provide waterproofing, which is quite effective.

2、 Apply waterproof adhesive at the screw opening of the wiring to enhance waterproofing.

3、 The infrared waterproof camera adopts an aluminum alloy shell to improve the accuracy of the interface, and uses silicone material adhesion, which also has a relatively ideal effect.