What are the characteristics of the green laser sight

The origin of the sight, or optical sighting device, has been difficult to verify. It is said that in Europe at least in the 16th century, someone tried to fix spectacle lenses on the butt. There are written records that before the 19th century, there were telescope-type sighting devices on firearms, which could be used for sighting in low-light conditions. The sight can be divided into the red and green dot sight in the holographic sight, Laser pointer sight. Up to now, sights are mainly divided into the following three categories: telescopic sights, collimating sights, and reflective sights. Among them, telescopic sights and reflective 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, which are used in the above two types of sights. A night vision device is added to the similar scope. According to the type of night vision device, it can be divided into low-light scope and infrared scope (which can be subdivided into active infrared and thermal imaging. The existing scope structure is relatively Simple, the gun sight requires the user to have rich shooting experience in order to hit the target, which has higher requirements for the user and is more troublesome.