The difference between a night vision camera and a thermal imaging camera
1. Effectiveness
1) If you have used ordinary night vision devices, you will find that the observation experience between night vision devices and ordinary infrared thermal imaging cameras is completely different. This is because general night vision devices observe the target directly through the lens, so the field of view is the same as that seen through the telescope lens, which is circular and the picture is green. If the clarity is enough, you can identify who the target is and see the person's facial features clearly.
2) The infrared night vision thermal imager sees the image on the internal LCD screen instead of directly seeing the target, so the field of view is square. The imaging of the infrared night vision thermal imager will be based on the temperature distribution. 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 targets and identify target categories, such as humans and animals.
2. Influence of light factors
1) The second generation+ night vision device is greatly affected by the environment due to its imaging principle. Especially the effect of light. When the light becomes darker, the observation distance will shorten. In the case of total darkness, an auxiliary infrared light source must be used, and the distance of the auxiliary infrared light source can generally only reach 100 meters. At the same time, they are also afraid of strong light, although many traditional night vision devices have strong light protection. However, if the ambient brightness changes greatly, it will have a great impact on the observation.
2) Infrared thermal imaging night vision device will not be affected by light. The target object can be clearly observed no matter it is day or night or in rainy, snowy or foggy days. It is for this reason that top-notch vehicle night vision devices, such as Mercedes-Benz and BMW, all use infrared thermal imaging cameras.
