What are the key points for buying infrared night vision devices?
1. Booster tube: it is several generations. When you buy, be sure to confirm to the merchant. Because the night vision device packaging and instructions are generally not labeled with a few generations of booster tube. Of course, if you want to buy 2 or 3 generations of night vision devices, it is best to buy a clearly marked is a few generations of booster tube night vision devices, so as to avoid infringement of your rights and interests. Currently on the market, such as the Russian RHO night vision device in the product packaging and the machine are labeled with the use of the first generation of booster tube.
2. Lens: look at the lens caliber and magnification. In the case of not considering the volume, of course, the bigger the better. The same tube situation, in principle, the larger the caliber, the farther the observation distance, the clearer the image.
3. Image enhancement technology: generally with this technology night vision device, under the same conditions the image brightness will be better and clearer.
4. Infrared emitter: this performance is good or bad, but also directly affects the image quality.
5. Resolution: the resolution of the lens is very important, the higher the resolution the clearer the image displayed.
As for the night vision device nominal observation distance, identification distance. Because there is no formal standard, each said differently. In fact, there is no reference significance. Generally speaking: 1 generation of the distance in 100-250 meters, 2 generations of the distance in 200-350 meters, 3 generations of the distance in 300-500 meters, able to see objects. Specifically also subject to the size of the lens quality, image processing technology, infrared emitters, the impact of the resolution and decide.
