Night vision generations: classification and differences of nigh
Night vision generations: the main principle of device classification
Nowadays different types of night vision devices play a very important role in the whole optical industry. This specially designed equipment that is manufactured for different categories of users has gained enormouse popularity due to its unique abilities of vision through the darkness. Such an excellent quality provides existance of various night vision generations which can be characterized as the historical stages. Let's have a short observation of these generations, their differences, and application spheres.
Night vision classification according to the generation of technologies
Historically, classification of night vision devices is based on the main principles of their construction. Due to this sign, the specialists determine four main night vision generations, and some additional stages of the devices evolution. The main difference between night vision generations is in the type of optoelectronic transducer (OET). Here are the most important features which characterize each category:
Night vision devices of the 1st generation (NVD Generation 1)
This is the most common used equipment that is provided with the powerful OET. The devices of NVD Generation 1 have some disadvantages, such as:
- Geometric distortion of image edges.
- A slight whine while being on.
- Worse image when the outer light is focused by NVD.
In spite of these light problems, the popularity of the first night vision generation is explained by their lowest and reasonable price.
NVD Generation 2
This category is characterized with more powerful magnification (3х-5х), and the distance of vision up to 500 meters.
The use of NVD Generation 2 is the best for the open field in the dark night, but with clear air.
Their price is some higher than the price for the previous generation equipment, but it is quite reasonable for the most users who represent professional applications (sports, hunting, boating) and law enforcement sphere.
NVD Generation 3
This is one of the most powerful equipment that is characterized with the increased luminous flux that can reach 30000-50000 times.
The other important advantage of the category is in its miniature size. Of course, the price for night vision devices of the third generation is high, but their unique qualities acquit it.
The only problem of some NVD Generation 3 is in the geometric distortion that may be caused by the outer light from both sides.
NVD Generation 4
It is not difficult to guess that the night vision devices of the fourth generation are the most perfect and effective in use. They combine the highest quality of target detection range with the ability of use at the worst light conditions. Due to such combination these newest devices provide the highest level of improvement in photo response. That means the ability of use at any light or weather conditions without image geometric distortion at the longest distances to the target.
The main differences in night vision generations are in their price and application. The equipment price grows according to the generation growth. As for the application, here should be mentioned the following specialties:
- NVD Generation 1 is the most common for different amateur optics.
- NVD Generation 2 and 3 are the best for the professional riflescopes.
- NVD Generation 4 is used by military, navy and security services.
The best way to choose the most suitable night vision devices is the use of skilled specialists of Outdoors Bay free support.