First of all, the imaging principles of thermal imaging and night vision are
different. Thermal imaging is also a kind of night vision, but thermal imaging
is very different from ordinary night vision!
One: Thermal imaging is based on the passive reception of infrared energy radiated by everything above absolute zero! The detected infrared is defined and imaged according to the different temperature and radiation intensity of different objects. Various display modes, including common white hot, red hot, black hot, false color, etc.!
Two: The night vision goggles take the initiative to receive and perform imaging, and the night vision goggles must have an external light source illuminate the object and be reflected in the night vision goggles machine to receive the imaging. The night vision device gathers the existing ambient light (starlight, moonlight or infrared light) through the front lens. This light composed of photons enters a photon cathode tube, turning the photons into electrons. Then the electrons are amplified to a larger number through electronic and chemical processes. Then the electrons are projected onto the screen, and the amplified electrons are converted back to visible light, which can be seen through the eyepieces.
Three: Comparison of the advantages and disadvantages of thermal imaging and night vision
1: The advantage of the night vision device is that it can see the target clearly and determine what the target looks like, a cat, a person or a rabbit. Thermal imaging can only be used to identify a certain target, see the outline of a person or target, and judge what the certain target is from the contour behavior. If the target is not completely exposed, or the distance is too far, what you see on the display is an obvious spot! Thermal imaging is based on the temperature difference, so there is a false target!
Digital night vision imaging effect
2: The advantage of thermal imaging can clearly show the target with large temperature difference, see far, it can also be used in a dark environment, can penetrate smoke, strong light and so on are night vision devices that have no effect on thermal imaging The disadvantage is that it can't be far away, it needs to fill light in a dark environment, and it can't recognize the camouflage.
Thermal imaging effect
I believe that with the comparison of the advantages and disadvantages of thermal imaging and night vision, you probably already know how to choose. On the one hand, it is the use and the other is the price. These two are the key points. Of course, a dual-light product that combines the two is the best choice!