What are the key purchase considerations for infrared night vision devices?
When purchasing night vision goggles, choose according to the following order:
1. Image intensifier tube: several generations. Be sure to confirm with the merchant when purchasing. Because the night vision device packaging and instructions generally do not indicate which generation of image intensifier tube it is. Of course, if you want to buy a 2nd or 3rd generation night vision device, it is best to buy a night vision device that is clearly marked with which generation of image intensifier tube it is, to avoid infringement of your rights and interests. The night vision devices currently on the market, such as Russia's RHO, indicate which generation of image intensifier tubes are used on the product packaging and machine.
2. Lens: Look at the lens diameter and magnification. Without considering the size, of course, bigger is better. For the same image intensifier tube, in principle, the larger the diameter, the farther the observation distance, and the clearer the image.
3. Image enhancement technology: Generally, night vision devices equipped with this technology will have better and clearer image brightness under the same conditions.
4. Infrared emitter: The quality of this performance also directly affects the imaging quality.
5. Resolution: The resolution of the lens is very important. The higher the resolution, the clearer the image displayed.
As for the nominal observation distance of the night vision device, the identification distance. Since there are no formal standards, different opinions vary. In fact, it has no reference significance. Generally speaking: the distance of the first generation is 100-250 meters, the distance of the second generation is 200-350 meters, and the distance of the third generation is 300-500 meters, and objects can be seen clearly. The specifics are determined by the quality of the lens, image processing technology, infrared emitter, and resolution.
