Nowadays technology of night vision systems has made things easily visible at night for the sake of convenience of different works. It can be used by the police, army, car, and other vehicle drivers etc. In fact, night vision systems, especially cameras have become quite common these days. There is one problem though. Not everyone is aware of the different night vision systems and the technology that it uses for visibility. This article intends to throw some light, pun intended, into the matter so that you get a little more clarity about night vision devices.
To start with, there are three types of night vision system that are available in the market. They include-
To make matters simple, this type of night vision system takes whatever minimal light is available in the environment and passes it through filters to amplify it. Once that is done, it also displays the images on a screen that is electronic. The difference between what happens in telescopes or binoculars is that the light does get magnified but it is not manipulated in any manner. However, in this device, as the light passes through lenses, it changes into an electrical signal which is interpreted by the processor, and an image is displayed. Thus, you get a distinct and brighter image even when the captured profile is dark.
This is the concept on which most of the advanced external night vision cameras work. One company that can be considered as a pioneer in night vision technologies is Lanmodo. If you are looking to install such an external device, the Lanmodo Vast Pro Night Vision System is undoubtedly best for you. The reason that most people prefer this product is because of its utility. Even when the weather is very inclement and the light levels are low, this will come to your rescue.
It captures whatever light is present around and amplifies it and converts it into signals which are displayed on an Ultra-High-Definition screen as a complete image. The cameras that are fitted around the car are for this particular purpose itself. The viewing angle is 45 degrees and it has a range of 300 meters. All these features make it one of the most sought-after safety devices in the market for different vehicles. The driver gets an idea of what lies ahead when they cannot see with their naked eyes and can maneuver the vehicle accordingly.
Near-infrared night vision
Whenever anything is hot or has a high temperature, it emanates out a certain amount of heat signature from it. The near-infrared night vision device makes use of this technology itself. It picks up these varying signatures and interprets it through a processor to give an approximate yet clearly understandable image. It is based on the fact that different objects have different temperatures and this spectrum is distinguishable, even on a color palette. The colder objects are black and the hotter ones are white.
If you look at the internal night vision system in Mercedes Benz, this is the technology that it makes use of. It consists of infrared cameras that can detect the heat signatures of what lies ahead of the car. It interprets the signals and gives a picture with different colors corresponding to the heat signatures on a screen in front. Generally, humans or any animals are warmer than the inanimate objects that are in front. Thus, they can be easily distinguishable and a driver can take all the necessary precautions to drive safely. Near-infrared night vision is basically the technology that many cars use as far as internal night vision is concerned.
Just like an infrared camera, thermal imaging works on a similar concept of varying heat signatures from different bodies that helps it to be distinguished. The only real difference between them is how they interpret heat. In thermal imaging, the cold objects are seen as black while the hot ones are yellow in color.
Thermographic cameras are the perfect examples of night vision devices that use thermal night vision. When focussed on different areas, it reads the heat signatures and displays a distinct image that gives an idea of what is being captured. It helps to see better at night.
These three are the three main technologies on which night vision devices run these days. If you are looking to gain some traction in visibility while driving a car at night, you could use one of them. Technology is also constantly improving to make night vision even better.