“Night vision” is the technology that provides us the ability to view things even in the darkest environment. In modern days, the most well known and popular method of performing night vision is based on the usage of the image intensifiers. These image intensifiers are commonly used in night scopes and night vision goggles. When you think about these devices, you are looking at scopes and monocular in the first instance.
Coming to the advantages and disadvantages of image intensifiers, they have an excellent low level IR light sensitivity and enhanced visible imaging that produces the best possible, recognition and identification performance. Image intensifiers come in high resolution which consumes less power and cost less and has the ability to recognize people. But the main drawback of these image intensifiers is they are based on amplification methods where some light is required. Image intensifiers are not helpful when there is no light .Daytime performance is very poor in comparison to the night light performance.
How they work?
To overcome the demerits of image intensifiers, CCD image detector manufacturers have significantly enhanced the sensitivity of the CCD detector by incorporating an on-chip multiplication gain technology in IR light. The multiplication gain happens when photons are detected in device active area but before detector’s primary noise sources.
Do you wish to see objects in the dark?
Modern Night Vision Monocular and Goggles are devices that amplify available ambient light levels in order to transform a very dark night time scene into a bright picture enabling the user to recognize features and objects that would otherwise remain masked by darkness. However, all high quality vision devices have a trick up their sleeves. They provide extra light when the available light is not enough to get a bright image. Night visions do that with infrared illuminators. This illuminator casts a virtually invisible infrared rays at the particular object at which you are looking, the lenses of the binoculars receives the extra IR light along with the visible light which is available and results in a bright image. Brighter the images, the more light is gained. More luxurious night vision devices always deliver superior images than cheaper ones and this is very apparent in the area where the image is located. All these things help to see the objects with IR rays during night time.