1, the effectiveness of the effect
(1) If you have used ordinary night vision devices, you will find that the night vision device and the general thermal imaging camera, observation feel completely different. This is because, the general night vision device is through the lens directly observe the target, so see the field of view and telescope lens to see the same, is round, and the screen is green. If the clarity of the case is enough, is able to identify the figure who the target is, can see the five human features.

(2) infrared night vision thermal imager to see the internal LCD screen on the imaging, rather than directly see the target, so see the field of view are square. Infrared night vision thermal imager imaging will be distributed according to the temperature, the higher the temperature the greater the brightness, and vice versa, the lower the temperature is dark, the main purpose is to find the target, identify the target category, such as the target is a person, animals, etc..

2,The influence of light factor
(1) the second generation + night vision device, due to the imaging principle, by the environmental impact is relatively large. Especially the influence of light, after the light becomes dark, the observation distance will be shortened. In the case of total darkness must resort to auxiliary infrared light source, and auxiliary infrared light source distance is generally only up to 100 metres. It will also be afraid of strong light, although many traditional night vision devices have strong light protection. But if the environmental brightness varies greatly, it will have a great impact on the observation.

2) Infrared thermal imaging night vision device, will not be affected by the light. Regardless of day and night or rain, snow, fog can clearly observe the target object. It is for this reason that the top car night vision devices, such as Mercedes-Benz BMW are using infrared thermal imaging cameras.