In low-light or no-light nighttime environments, infrared sights, relying on their ability to perceive and image infrared light, have become key equipment for breaking through visual limitations. Abroad, the application of this equipment has formed a mature system. Especially in three major fields—military operations, security prevention and control, and hunting sports—they have become indispensable core tools for nighttime scenarios due to their precise aiming performance and stable environmental adaptability, profoundly changing the operational modes and efficiency of relevant fields.

The military field is one of the core application scenarios for infrared sights, and their technological iteration and tactical application have always been at the forefront of the industry. In modern warfare, nighttime combat capability has become an important indicator of military combat effectiveness, and infrared sights are key equipment for enhancing nighttime combat efficiency. Foreign militaries generally equip them on various light weapons such as rifles, sniper rifles, and machine guns, helping soldiers accurately identify targets and complete aiming and shooting in complex low-light environments such as night, dense forests, and sandstorms. Compared with traditional night vision equipment, infrared sights can clearly display target outlines by actively emitting infrared beams or passively receiving infrared radiation from targets themselves, without being strictly restricted by the intensity of ambient light, and can achieve precise strikes even in complete darkness. In anti-terrorism operations, special forces can quickly lock onto the positions of terrorists during nighttime raids with the help of infrared sights, avoiding accidental attacks on innocent people; in border patrol missions, soldiers can effectively inspect illegal immigrants, smuggling vehicles, and weapons and equipment hidden in the night with this equipment, greatly enhancing the deterrence and accuracy of border control. In addition, some advanced military infrared sights are also integrated with thermal imaging technology, which can distinguish living organisms from non-living organisms through temperature differences between targets and the environment, further improving target recognition capabilities in complex battlefield environments.

The security prevention and control field is another important application position for infrared sights, playing an irreplaceable role in foreign urban security, important facility protection and other scenarios. With the improvement of social security needs, the pressure of nighttime security has gradually increased. Traditional monitoring equipment is prone to problems such as blurred images and target loss in low-light environments, and the addition of infrared sights has effectively made up for this shortcoming. In urban nighttime patrols, security personnel equipped with equipment mounted with infrared sights can conduct detailed inspections of monitoring blind spots such as remote streets and park corners, and promptly detect suspicious persons or abnormal behaviors; in the security systems of important infrastructure such as airports, ports, and nuclear power plants, infrared sights are integrated into fixed monitoring points and mobile security equipment to achieve 24/7 uninterrupted prevention and control. Especially at night, they can accurately identify illegal behaviors such as climbing over walls and damaging equipment, providing precise guidance for security personnel's rapid disposal. In addition, in nighttime security of commercial venues, some high-end infrared sights are also linked with alarm systems and lighting systems. Once an abnormal target is detected, they can immediately trigger an alarm and turn on lighting, forming a complete security closed loop.

In the field of foreign hunting sports, the application of infrared sights is also extremely widespread, becoming core equipment for hunters in nighttime hunting. Influenced by geographical environments and hunting cultures, nighttime hunting is legally permitted in many foreign regions to control wildlife populations and maintain ecological balance. The core difficulty of nighttime hunting lies in target recognition and precise aiming, which infrared sights have exactly solved. Hunting infrared sights mostly adopt a lightweight design, which can be conveniently mounted on shotguns. Their low-power consumption characteristics can meet the needs of long-term field hunting. Some products also support brightness adjustment, which can adjust the imaging effect according to the intensity of ambient light to avoid exposing their positions due to strong light. With the help of this equipment, hunters can clearly identify the outlines and movements of prey in the dark, accurately judge the shooting distance, which not only improves the success rate of hunting but also effectively avoids mistakenly hunting protected animals. At the same time, some high-end hunting infrared sights are also integrated with ranging functions, further improving the accuracy of aiming and providing hunters with a better user experience. It should be noted that foreign countries have strict legal restrictions on the use of infrared sights for hunting, which require compliance with relevant qualification requirements to avoid illegal hunting behaviors.

In general, the application of infrared sights in foreign nighttime scenarios such as military, security, and hunting not only reflects their core advantages of precise imaging and stable reliability but also reflects the urgent demand for improving nighttime operational capabilities in relevant fields. With the continuous iteration of technology, infrared sights will develop in the direction of being more lightweight, intelligent, and multi-functional, and their application scope in nighttime scenarios will be further expanded, providing stronger technical support for nighttime operations in various fields.