Types of Night Vision Devices
Night vision devices are used to move efficiently and effectively in the dark or low light conditions. They come in the form of binoculars, monocular, goggles etc. and can be categorized based on their intended use, the kind of technology it makes use of and the type of device that it is. These devices are really popular among military and law enforcement agencies as well as search and rescue crews. The use of such devices is restricted for civilians in many countries especially if they intend to use it with firearms.
The first of these devices was developed during the World War II and was termed as generation zero. It made use of infrared lights but was later replaced with passive light amplification. The monocular and binoculars had to be held to your eyes for effective vision in the dark but newer models have proximity sensors in them which can automatically turn the device on and off and as a result can be worn at all times. These can also be attached as night vision scopes with a gun and can be worn around your head with the help of a strap in the form of goggles. In addition to this it can also be connected to your helmet as well.
On the basis of technology these devices are termed as generation one, two, three etc. Even though generation one devices are still available for purchase commercially but the quality of their image is far less as compared to generation three and four as the latest generation also include other features like digital controls and auto on and off.