The sight is a kind of optical device, which is widely used in shooting, hunting, observing and other fields to help the shooter aim the target accurately and improve the shooting accuracy. A sight is usually composed of an eyepiece, a magnifying system, and a sight. They are designed to provide a clear, enlarged view of the target at various distances. The choice of sight depends mainly on the scenario and requirements used. There are different types of scopes, including optical scopes, reflector sight scopes, holographic scopes, etc. . The optical sight is magnified and focused through a lens to provide a clear view. The reflector sight uses a pointy or luminous sight to point at the target. The holographic collimation produces the sight image through the grating, the reflecting element and the photosensitive device. The scope also has different magnification, allowing the shooter to zoom in on the target at different distances for more accurate aiming. Generally speaking, a higher power scope is suitable for long range shooting, while a lower power scope is suitable for close quarters combat or fast shooting. Some scopes also have the ability to adjust wind height and crosswind offset to help with more accurate shooting in different environments. In addition, some advanced scopes may include observation range calculations, night vision, and infrared capabilities