An optical unit for optically scanning an information surface and an optical unit for optically scanning an information surface and an optical scanning arrangement including the optical unit,

摘要

An optical unit (1) for optically scanning the surface of the recording medium (9). The unit comprises a frame 13, a radiation source unit 15, a rotating mirror unit 17 and a target system 19 for forming a scanning point on the information surface, And has an optical axis 19a. From a suitable point of view, the rotating mirror unit is positioned between the radiation source unit and the target system, and the suspending means comprises a pivoting movement of the target system about the pivot axis coinciding with the longitudinal motion of the target system along the optical axis, . The actuating means drives the target system in accordance with the motion.