At present, technology is constantly improving, and technological products are changing with each passing day. In recent years, infrared thermal imaging night vision devices have been widely used in the civilian field in a growing trend for natural observation, outdoor hunting, outdoor adventure, security and anti-theft, marine operations, night patrols and other occasions! Infrared thermal imaging can see clearly in a completely dark environment and can clearly detect high-temperature targets due to its special performance of the principle!
I believe that many people are more concerned about whether thermal imaging can penetrate. The answer is yes, thermal imaging can penetrate! For example, the plastic bag below.
This is not a magic trick, but thermal imaging can really penetrate this material. Infrared thermal imagers are not affected by low illumination and strong sunlight, and can penetrate smoke and haze. You can see from the above that thick clothes cannot be penetrated, so don't worry about your privacy. Infrared thermal imagers collect thermal radiation from different objects to realize the imaging of objects, so that they can be reflected less by certain materials than visible light, and can pass through thin fabrics and be reflected by objects hidden under the fabrics and pass through the fabrics again, so that some special fabrics (pure nylon and silk) can be made translucent, but the perspective effect is relatively limited.
If clothes cannot be penetrated, then walls are even worse. Thermal imaging penetration in movies and games is all special effects plus plug-ins!
Summary: Thermal imaging can see through some materials, and choosing the right band can see the internal situation (such as industrial medical applications). When encountering completely opaque objects such as walls, it is impossible to penetrate and observe them like plug-ins in games.