A laser scanning system for scanning a laser beam of a hair cutting device includes a laser scanning device for generating a scanning movement of the laser beam and a movable optical device for adjusting and/or focusing the laser beam. The laser scanning device includes an arrangement with at least one movable optical element which is mechanically coupled to the movable optical device, and an optical system fixed to the laser scanning device. The movable optical element is arranged to inter-relate a position of the movable optical device to a mobile access-position where the laser beam enters the optical system. Further, the optical system is arranged to inter-relate said mobile access-position to at least one corresponding position where the laser beam is incident on the movable optical device.