#Infrared #night #vision #device

Infrared night vision is a military night vision instrument that uses photoelectric conversion technology. It allows observation and identification of targets at night or in low-light environments. The following is a detailed introduction to infrared night vision:

Classification:
Active infrared night vision: Use an infrared searchlight to illuminate the target and receive reflected infrared radiation to form an image. The infrared light of this night vision device may be discovered by the enemy's infrared detection device.
Passive infrared night vision (thermal imager): It does not emit infrared rays, but relies on the target's own infrared radiation to form a "thermal image". This night vision device is not easily discovered by the enemy and has the ability to observe through fog, rain, etc.
Working principle:
Active infrared night vision devices illuminate the target by emitting infrared light, and then receive reflected infrared radiation to form an image.
Passive infrared night vision devices (thermal imagers) measure the infrared radiation energy on the surface of an object to determine the temperature of each point on the surface, thereby generating a "thermal image".
Application scenarios:
Military field: used for night reconnaissance, aiming, searching and other tasks.
Civilian field: such as monitoring, security, search and rescue, etc. Intelligent infrared night vision technology is gradually maturing and will be applied to more fields in the future, such as urban security, property management, industrial safety, intelligent transportation, environmental monitoring, etc.
Advantages and Disadvantages:
Advantages:
Objects can be clearly observed in extremely low light environments.
It can observe human thermal radiation images for detecting air conditioners, electrical appliances, buildings, etc.
Avoid the reflection interference of white light in dark environments.
It can monitor land, water and air targets.
Disadvantages:
The observation distance is relatively limited and may be limited by various factors such as environmental illumination.
Infrared fillers require energy support and require more energy supplements.
High-end infrared night vision devices are expensive.