The human eye plays the vital role in seeing the things happening around you, also helps to identify any object in front of you in midst of the size, color, and shape. Sometimes, just the natural eye power is not enough to see the clear image. There is much development of the night vision technology that helps in providing the ability to see even in the darkest place.
Night Vision Technology
This technology is initially used in the military and police force to identify the potential suspects and there is a number of commercial night vision devices available in the market. Many people are using this type of devices for hunting and finding objects during the night time. In this article, you can get more interesting facts about the night vision technology.
1) Different Types
There are different types of night vision devices available with interesting features at present, but the first most popular device is the image intensification which produces clear images using the available light in the surrounding.
The thermal imaging technology was developed and it creates pictures based upon the temperature of the objects. The latest one is the active illumination which includes both active source of illumination and the image intensification technology.
It is classified into five generations from 0 to 3. In the year 1930, the night vision devices are first introduced in the battlefield by the German army which is known as GEN 0. Then the version GEN 1 was introduced and it uses only the ambient light than infrared. Generation 3 was developed with the new technology and the best feature was the one that produces light amplification greater than the previous versions.
3) Image Qualities
The good night vision device produces a clear image and it mainly depends upon the resolution of the particular unit. If you want to get the high quality image, then choose the device with the resolution power 640 X 480 and some units come with the video facilities. It is important to check the image intensifier tube and the optical characteristics before buying the image intensifier devices.
4) How Does Image Intensifier Night Vision Work?
First, it receives photons from the natural light source such as stars and moon, and then the light flow falls over the photocathode plate which is fixed inside the tube. The light then transmitted through the vacuum tube strikes a microchannel plate for illuminating the picture. The best night vision device produces the high resolution 45 lp/mm (line pairs per millimeter).
5 How Does Thermal Night Vision Work?
It uses the sensor known as microbalometer for finding the temperature of the objects, the difference between them is calculated. From the collected thermal information, it develops the patterns of the objects to create the image.
6) Are There Cheaper Alternatives
The effective alternative for the image intensifier night vision is the digital camera sensors. The complementary metal-oxide-semiconductor (CMOS) and the charge-coupled device (CCD) are available in affordable price and using this, you can see what is going on in the dark place.
7) Why Does Everything Look Green through Night Vision Device?
When the electron hits on the screen coated with phosphor it converts them into photons for producing the image in the green color. It can also produce a black and white image but most people prefer green and black images because their assumption is that it will produce bright image than other combination of colors in the dark.
8) Thermal Imagers
If you want to find the animals in the woods during the night time, then it is necessary to have thermal imagers as they help to identify the heat signature of the particular object. But it will not provide the complete details about the animals, try to get a night vision device with the thermal imager to get the clear image you want.
Future of Night Vision Technology
The new technology which is going to be popular in the night vision is the shortwave infrared (SWIR). Using this type of devices, you can see the image that is normally invisible. Moreover, it will produce a picture in high resolution even in the darkest place using the infrared system.
Hope you got a clear idea about the night vision technology after reading the above article.
If you are planning to go for hunting, then never skip taking a night vision device so that you can identify the animals in the dim light easily.
Let’s know in comments if you are using any night vision device?