The biggest difference between night vision goggles and thermal imagers is that they work in different ways. The differences between night vision goggles and thermal imagers are as follows:

1. Effectiveness: General night vision goggles observe the target directly through the lens, so the field of view seen is the same as that seen by the telescope lens, which is round, and the picture is green. If the clarity is sufficient, it is possible to identify who the target person is and see the facial features of the person clearly. Infrared night vision thermal imagers see the image on the internal LCD screen instead of directly seeing the target, so the field of view seen is square. The imaging of infrared night vision thermal imagers will be distributed according to the temperature. The higher the temperature, the greater the brightness. On the contrary, the lower the temperature, the darker the color. The main purpose is to find the target and identify the target category, such as the target is a person, an animal, etc.

2. The influence of light factors: The second generation + night vision goggles are greatly affected by the environment due to the imaging principle. In particular, they are affected by light. When the light becomes dark, the observation distance will be shortened. In the case of complete darkness, auxiliary infrared light sources must be used, and the distance of the auxiliary infrared light source is generally only up to 100 meters. At the same time, they are also afraid of strong light, although many traditional night vision goggles have strong light protection.

However, if the ambient brightness changes greatly, it will have a great impact on observation. Infrared thermal imaging night vision devices are not affected by light. Whether it is day or night or rainy, snowy, or foggy, you can clearly observe the target object. It is for this reason that top-level vehicle-mounted night vision devices, such as Mercedes-Benz and BMW, use infrared thermal imaging devices.