The night vision goggles works based on the two major technologies such as the image enhancement technique and the thermal imaging technique. Night vision goggle with the implementation of the image enhancement technology tends to collect all the available tiny bits of light and the infrared lights present in the deep dark conditions, which are amplified to see in the darkness.
The night vision goggles with the implementation of the thermal imaging technology, help to capture the infrared light scatter, in the form of heat from the objects in the field of view. With the use of these scattered infrared lights, the night vision goggles can be used to see the image through the deep dark regions based on the amount of the heat emitted by the particular objects. The night vision goggles are widely used in the numerous kinds of applications such as search and rescuing, hunting, surveillance, navigation and military purposes.