Rifle scope includes telescopic sight, collimating optical sight, and reflex sight.The telescopic sight and the reflex sight are the most popular, and used at day, also name day scope/day sight. In additional, if we add night vision on the day scope, it's called scope/night sight.
A telescopic sight, is asighting device that is based on an optical refracting telescope. They are equipped with some form of graphic image pattern (a reticle) mounted in an optically appropriate position in their optical system to give an accurate aiming point. Telescopic sights are used with all types of systems that require accurate aiming but are most commonly found on fire arms, particularly rifles. Other types of sights are iron sights, reflector (reflex) sights, and laser sights.