People themselves have no night vision ability, but with the support of night vision technology, they have night vision ability after wearing night vision devices. Night vision technology-A technology that uses photoelectric detection and imaging technology and equipment to convert (enhance) objects that are invisible to human eyes due to darkness at night into visible images.

Include non-visible light information sensing (acquisition), processing and display technology. Low-light-level night vision equipment is the most abundant and widely used night vision equipment abroad, which can be divided into direct observation (such as night vision observation instrument, weapon sight, night vision driver and night vision glasses) and indirect observation (such as low-light-level TV).

Extended data:

Principle of night vision technology:

Infrared night vision technology is divided into active infrared night vision technology and passive infrared night vision technology. Active infrared night vision technology is a kind of night vision technology which observes by active illumination and using infrared light reflected by targets in infrared light source, and the corresponding equipment is active infrared night vision device. Passive infrared night vision technology is an infrared technology that realizes observation by means of infrared radiation emitted by the target itself.

According to the temperature difference or thermal radiation difference between the target and the background or target part, the target is found. It is equipped with a thermal imager. The thermal imager has unique advantages different from other night vision devices, such as working in foggy days, rainy and snowy days, long working distance, identification and camouflage, and anti-interference. It has become the development focus of foreign night vision equipment, and will replace low-light-level night vision equipment to some extent.

Baidu encyclopedia-night vision

Baidu encyclopedia-night vision technology