Night vision equipment can be roughly divided into three categories:
Observation glasses - Observation glasses are generally handheld and can also be installed on weapons. They use a single barrel (one eye) mirror body. Due to the fact that the observation mirror is a handheld device and not worn like an eyepiece, it is more suitable when you want to observe a specific target in more detail and then return to normal observation conditions.
Eyeglasses - Although they can also be held, they are usually worn on the forehead. The eyepiece adopts a dual barrel (two eyes) body, and single lens or composite lens can be used according to different styles. Eyeglasses are the best choice for long-term observation, such as patrolling around buildings with poor lighting.
Camera - A camera using night vision technology can transmit images to a display for real-time playback, or record the transmitted images using a video recorder. When we need to perform high-quality night vision observations at a constant location, such as on a fixed building or when assembling night vision cameras as onboard equipment for helicopters, cameras can come in handy. Many new cameras have built-in night vision capabilities.
Infrared night vision devices are divided into active and passive types. What is the difference between the two?
Active night vision system: It uses near-infrared light as a light source to illuminate targets, such as infrared LEDs, infrared lamps, and near-infrared lasers; An active infrared night vision device is a device that uses a low light or low light camera to receive the reflected infrared light from a target, converts it into a video signal, and synchronously displays the image on the monitor's fluorescent screen.
Passive night vision system: There are two types. One type is to use all very weak natural light such as moonlight, starlight, and night sky light to amplify and enhance visibility. This type of night vision device is also known as a low light level night vision device. Another type is to use far-infrared sensitive detectors to detect the thermal radiation of the target itself, and this type of night vision device is also known as a thermal imager.
