Fog and rain work by reducing the level of light, which affects the clarity of images. This can be partially rectified by purchasing instruments that have infrared illuminators. These accessories are often included as part of the device, but it is also possible to buy them separately if necessary. Night vision scopes collect ambient light from the environment using a special tube.
There are three different kinds of device called Generation 1, Generation 2 and Generation 3. They range in complexity, with the latter two kinds tending to be more expensive as they have mechanisms that boost their capability to gather light. As weather conditions deteriorate and it becomes harder for the devices to pick up ambient light, some users prefer to use infrared illuminators, which are included in a range of our night vision goggles.
The accessory works by sending out a beam of light, which consists of a wavelength that cannot be picked up by animal and human eyes. This can cover fairly large distances, and is ideal for those using their instruments in the dark. In addition to revealing objects in low-light conditions, night vision devices fitted with infrared illuminators can greatly enhance the images produced by the goggles.
This means that Generation 1 instruments may perform on a level with Generation 2 products, thanks to the accessory. The improvement in clarity of the image is also evident in Generation 2 instruments that utilise illuminators of this type.