Pistepäätähtäin

Pistepäätähtäin, also known as a red dot sight or reflex sight, is a type of optical sight that allows the user to see through a transparent lens with a reticle (often a dot) projected onto it. The reticle is illuminated by a light source, making it visible against the target. The key principle behind a pistepäätähtäin is parallax-free design. This means that the reticle appears to be at the same distance as the target, regardless of the eye's position behind the sight. Consequently, the shooter does not need to precisely align their eye with the sight's optical axis to achieve an accurate shot.

Pistepäätähtäimet are commonly used in firearms, particularly for close-to-medium range engagements. They offer several advantages over traditional iron sights, including faster target acquisition, improved accuracy, and ease of use, especially for those with vision impairments. The illuminated dot provides a clear aiming point without obscuring the target. Modern pistepäätähtäimet often feature adjustable brightness settings to adapt to various lighting conditions and can be powered by batteries or, in some cases, solar energy. They are also relatively compact and lightweight, making them a popular choice for many types of firearms, from handguns to rifles and shotguns. The absence of magnification means they are primarily used for situations where speed and situational awareness are paramount.