A laser sight is a portable compact device that generates a laser beam in the infrared or visible range of the spectrum. Typically, a laser sight is used to facilitate and speed up aiming at medium and short ranges. There are a few important things to know to choose a good laser sight.
Operating principle
The laser sight allows you to form a bright red dot on the object, which most closely matches the point of entry of the bullet, which moves in a straight line. Most often, a laser sight is made on the basis of a diode, the radiation of which covers the wavelength range from 635 to 670 nm. The red color of the laser beam is used in connection with the technical features of this type of emitter. Infrared laser beams are usually combined with scopes equipped with night vision devices. In addition to small arms, laser scopes can also be mounted on crossbows.
The action of a laser sight is based on focusing the diode radiation into a narrow beam through a biconvex lens. Sights with a green laser beam are also produced - a slightly different system is used for them, consisting of a solid-state laser with a diode, the wavelength of which is 532 nm. This system increases the cost and weight of the laser sight, but it has a very serious advantage - the human eye is more sensitive to green, so the green beam is clearly visible at a long distance with the same emitter power.
Choosing a laser sight
A good laser sight should have a vertical / horizontal adjustment function. When choosing a laser sight, it should be remembered that they can have different colors and different powers, but their main disadvantage is a strong limitation of the sighting point visibility at a long distance. In addition, the laser beam is difficult to see in daylight and a similar target color, so this sight is mainly suitable for shooting in suitable conditions for it. Laser sights are most convenient for use at short range and during dark / cloudy times of the day.
When choosing a laser sight, it is imperative to check the availability of a high-quality power source and a special mount that allows you to install and remove the laser sight without losing the accuracy of the installation. In addition, this mount maintains the most accurate position of the laser beam with changes in humidity and temperature.
Also, when choosing a laser sight, you need to pay attention to the presence of a mechanism for accurate adjustment of the laser beam and the ability of the sight to withstand impulses from the recoil of the type of weapon for which it is purchased. At the same time, the design of the laser should provide an instant and convenient activation of the sight.
