The optical system used for accessing disc information has a drive that moves the optical head across the disc tracks as the disc is rotated . The optical head 5 is moved on a sliding carriage that is located on a guideway 14, which has at least one sliding surface 14a,14b on which the carriage can move. The contact surfaces of the guideway are provided with inserts of a lubricating grease substance 18 that are retained . The optical head has a spring support point on one side 16.
