What is a scope
The origin of the scope or optical sighting device has been difficult to verify. It is said that at least in Europe in the 16th century, some people have tried to fix spectacle lenses on the butt of a gun. There are written records that before the 19th century, there were already telescopic sighting devices on firearms, which could be used for aiming in low light conditions. Sights can be divided into holographic sights, internal red and green dot sights, and laser sights.
Classification of sights
Sights are mainly divided into the following three categories: telescopic sights, collimating sights, and reflex sights mirror. Among them, telescopic sights and reflex sights are the most popular. The above two types of sights are mainly used during the day, so they are collectively referred to as white light sights. In addition, there are night vision sights for night sighting (a night vision device is added to the above two types of sights, and according to the night vision device. It can be divided into low-light sights and infrared sights (which can be further subdivided into active infrared and thermal imaging).
What is the principle of the scope
The scope has the function of magnifying , and also has the function of binocular fast aiming. Natural light is absorbed from an optical fiber lighting system on the top of the scope, and the aiming mark is formed through the reticle and then reflected to the shooter’s eye.
Both the bullet and the scope are It can be approximately regarded as a ray. Two rays located on the same plane and in one direction are either parallel or intersecting. In fact, the point in the scope is the intersection of the ray of the scope and the ray of the bullet. The parabola and the line of sight have two focal points, and are the target sight.
The intersection of the ray of the sight and the ray of the bullet may not fall on the target, which requires adjusting the ray of the sight and the ray of the bullet The distance of the intersection of the rays. In order to adjust, it is necessary to adjust the installation angle of the scope according to the target distance. If you want to shoot accurately, you must also consider the influence of the wind direction, which is the so-called correction.
< strong>Is the scope a contraband?
At present, it is not included in the category of contraband. , a very normal thing.
Scopes are generally not prohibited items, and the measure of whether they are breaking the law is whether they have caused harm to others, and whether they have harmed the interests of others and the country. Scopes are not weapons, not to mention Ordinary scopes are only classified as toys (can’t be compared with military-standard scopes).
There is also the use of this scope. If it is used for crimes or harming the interests of others, of course it is illegal. If not, it’s just a normal tool.