What are the key points to choose an infrared night vision device?
1. Image intensifier tube: What generation is it. Be sure to confirm with the merchant when making a purchase. Because the packaging and manual of night vision devices generally do not indicate which generation of image intensifier tube it is. Of course, if you want to buy a second-generation or third-generation night vision device, it is best to buy a night vision device with a clear indication of which generation of image intensifier tube it is, to avoid infringement of your rights. At present, the night vision devices on the market, such as RHO in Russia, indicate on the product packaging and machine which generation of image intensifier tubes are used.
2. Lens: Check the lens aperture and magnification. Without considering volume, of course, the larger the better. In the same case of an image intensifier, the principle is that the larger the aperture, 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 image brightness and clearer under the same conditions.
4. Infrared emitter: The quality of this performance directly affects the imaging quality.
5. Resolution: The resolution of the lens is very important, and the higher the resolution, the clearer the displayed image.
As for the nominal observation distance and identification distance of the night vision instrument. Due to the lack of formal standards, various opinions vary. Actually, it has no reference significance. Generally speaking, the first generation has a distance of 100-250 meters, the second generation has a distance of 200-350 meters, and the third generation has a distance of 300-500 meters, allowing for clear visibility of objects. The specific factors also depend on the quality of the lens, image processing technology, infrared emitter, and resolution.
