What is a Night Vision Monocular?

Infrared night vision is a military night vision instrument that uses photoelectric conversion technology. It is divided into active and passive types: the former uses infrared searchlights to illuminate the target and receives reflected infrared radiation to form an image; the latter does not emit infrared rays and forms a "thermal image" by relying on the infrared radiation of the target itself, so it is also called "thermal image" instrument". The infrared night vision devices currently on the market are all active. Passive infrared night vision devices are generally not called night vision devices, and they are renamed thermal imaging cameras.

Infrared night vision

Infrared night vision is using

Infrared night vision is the use of infrared night vision

Visible light at night is faint, but infrared light that is invisible to the human eye is abundant. Infrared sights help people observe, search, aim and drive vehicles at night. Although infrared was discovered very early, it is limited by infrared components, and the development of infrared remote sensing technology is slow. Until 1940 Germany developed lead sulfide and several

1. Classified by image algebra:

The most important indicator of the infrared night vision device is the algebra of the image tube. In theory, the higher the algebra, the farther the observation distance, the clearer it is.

At present, there are about 20 brands of infrared night vision devices sold worldwide. The main brands are:

1. YUKON:

Buy a night vision device and choose from the following order:

1. Imaging tube: several generations. When buying, be sure to confirm to the merchant. Because the night vision equipment package and instructions are generally not marked as several generations of image increase tube. 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 several generations of image tube to prevent your rights from being violated. At present, such as the RHO night vision device in the market, the product packaging and the machine have marked the use of several generations of image tubes.

2. Lens: Look at the lens diameter and magnification. Without considering the volume, of course, the larger the better. For the same image tube, in principle, the larger the caliber, the longer the observation distance, and the clearer the image.

3. Image enhancement technology: Generally, night vision devices with this technology will have better and clearer image brightness under the same conditions.

4. Infrared transmitter: The performance of this transmitter directly affects the imaging quality.

5. Resolution: The resolution of the lens is very important. The higher the resolution, the clearer the displayed image.

As for the nominal observation distance of the night vision device, the identification distance. As there are no formal standards, opinions differ. In fact, there is no reference meaning. 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. It depends on the lens quality, image processing technology, infrared emitter, and resolution.