Extreme focus range for powerful laser sources with ultra-intensive beams of under 1°. This optical system allows you to adjust the shape of the beam according to the distance of use or to the destination where you want to project the effect. Two lines always intersect at a point located at infinity if they are parallel – the so-called “point at infinity”. The apparent size of an object is inversely proportional to its distance from the point of observation. The extreme range of focus for this type of source can solve this problem over long distances.