Imaging principles of thermal imaging night vision devices
Thermal Imaging Night Vision produces realistic, 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 is free to rotate 360 degrees horizontally and tilt ±90 degrees up and down, allowing you to experience the sensory enjoyment and safety brought by military technology.
Designed to enhance the driver's visual ability. The system can output clear thermal images of the road ahead at night in total darkness, haze and other inclement weather, as well as headlight glare and other low visibility conditions, effectively enhancing the driver's visual range.
At the same time can only pedestrian recognition and front collision alarm function can be found in advance of pedestrians, vehicles and obstacles, greatly enhancing the safety of driving.
Thermal imaging night vision device principle:
Thermal imaging is passive infrared, is by receiving the object temperature (thermal energy) issued by the infrared, after receiving through the processing into an image, for display, the general image regardless of the day, night and day are for the grey image.
Thermal imaging is not active infrared, thermal imaging night vision device itself will not send out infrared, just to receive a world of infrared, so it is very simple to conclude that as long as the thermal imaging can receive the infrared emitted by the object, there is an image output, and vice versa, if you can't receive the infrared, we can not reflect the image of the object we want to see.
So now we all ask some of the questions, such as: thermal imaging can see through, through the wall, look at the people and things inside the car, through the glass and so on, there is a certain result.
Through the wall, through the glass, then, the wall blocked the infrared, thermal imaging night vision device simply on the reception of infrared, can not detect the wall and glass on the other side of the object. That is to say, in order to have an image out, there must not be all sealed objects to block all the infrared light, otherwise it is certainly not receive infrared imaging.
Like some trees, grass and other environments, because there is not all blocking the infrared, so thermal imaging can still detect the back of a higher temperature than the plant objects. If there are people and animals behind the grass and trees, it is obvious that there is a temperature difference, the higher temperature things will be bright, the lower temperature objects will be dark.
Thermal imaging is actually temperature difference imaging. Objects with higher temperatures emit stronger infrared, and objects with lower temperatures emit weaker infrared.
People walk behind the glass, can't see the image of people, that's because the glass block the infrared of the people outside, thermal imaging night vision device can't receive infrared, it can't show the image of people.
2 people standing inside, there are people in the image, there are people on top of the glass, that's because the infrared of the person is received by the person's thermal imaging, in addition, there are people on the glass because the person's infrared is emitted in all directions, and the infrared emitted to the glass after the glass is reflected back by the glass, and it is received by the thermal imaging night vision device, so we can see the image of the glass with people on top of it.
The person is wearing clothes, most of the infrared is blocked by the clothes, the body part is darker because the temperature of the clothes is much lower than the temperature of the person's head, the temperature of the head is bright, the temperature of the clothes is dark.
At this time someone put 2 palms on the clothes for 2 seconds, we found that people have clothes above the 2 palm prints out, that is, the temperature of the palm of the hand to the top of the clothes, there is the temperature of the palm of the hand, and slowly remove the palm prints disappeared after 2 or 3 seconds, that is, above the temperature of the palm of the hand on the clothes slowly dispersed and disappeared.
