Working principle of infrared night vision device

Infrared night vision device is a visual device that can clearly see objects in the dark. It uses the special spectrum of infrared, which can see objects in completely dark environments. This is its biggest advantage. Therefore, infrared night vision devices are widely used in special fields such as military, police, patrol, search and rescue.

The main principle of infrared night vision devices is to use infrared as a signal and reflect it onto the surface of an object, thereby illuminating the human eye with the reflected infrared. In an environment free from light pollution, invisible targets can be clearly seen.

The working principle of infrared night vision device is as follows:

1. External emission: The night vision device contains an infrared emitting device that emits infrared radiation and emits it onto the surface of an object, thereby generating reflection;

2. External reception: Infrared reflection is irradiated onto the receiving device of the night vision device, which converts the optical signal into an electrical signal and outputs the electrical signal to the display device;

3. Display screen: When an electrical signal is input to the display screen, the display screen will convert the electrical signal into an image, and people can see objects through the display screen.

In addition, infrared night vision devices also have some other features, such as allowing people to see objects in completely dark environments, and they also have optical enhancement, pulse emission, image fusion, and other functions, which make infrared night vision devices more effective in nighttime search.

In summary, the working principle of an infrared night vision device is that it uses infrared radiation to irradiate the target, receives the reflection after irradiation, converts the signal into an electrical signal, and converts it into an image on the display screen, allowing people to see objects in dark environments. It also has many functions and is very helpful for night search tasks.