Analysis of imaging principle of thermal imaging night vision device
The thermal imaging night vision device can produce realistic and clear thermal images in total darkness, mist and smoke. It can be seamlessly connected with wide-screen navigation system and multi-function navigation system.
The camera lens can freely rotate 360 degrees horizontally and tilt ±90 degrees up and down, allowing you to experience the sensory enjoyment and safety guarantee brought by military technology. Designed to enhance driver vision.
The system can output a clear thermal image of the road ahead in the dark night, severe weather such as fog and haze, and low visibility of human eyes such as headlight glare, effectively improving the driver's visual range.
At the same time, only pedestrian recognition and front collision warning functions can detect pedestrians, vehicles and obstacles in advance, greatly improving driving safety.
Principle of thermal imaging night vision device:
Thermal imaging is passive infrared. It relies on receiving infrared rays emitted by the temperature (heat energy) of objects. After receiving them, they process them into images and display them. Generally, images are gray and white images no matter day or night.
Thermal imaging is not active infrared, and the thermal imaging night vision device itself does not emit infrared rays, but only receives infrared rays from the outside world;
So it is very simple to conclude that as long as thermal imaging can receive the infrared emitted by the object, there will be an image output. On the contrary, if it cannot receive the infrared, it cannot reflect the image of the object we want to see.
So now some of the questions we all ask, such as:
Whether thermal imaging can see through, pass through walls, see people and objects in the car, and pass through glass, etc., will have certain results.
If it goes through a wall or glass, the wall blocks the infrared rays, and the thermal imaging night vision device cannot receive infrared rays at all, and cannot detect objects on the other side of the wall and glass.
That is to say, if there is an image to come out, there must be no sealed objects that block all the infrared rays, otherwise the infrared imaging will definitely not be received.
In some environments such as trees and grass, since the infrared is not completely blocked, thermal imaging can still find objects with a higher temperature than plants behind them.
For example, there are people and animals behind the grass and trees. Obviously, there is a temperature difference. Things with a high temperature will be brighter, and objects with a low temperature will be darker.
Thermal imaging is actually temperature difference imaging. Objects with high temperatures emit stronger infrared rays, while objects with lower temperatures emit relatively weaker infrared rays.
