Testing device and production thereof a method for the contactless optical testing of optical data carriers, and / or optical storage media

摘要

Testing device (1) to the optical - testing of optical data carriers, and / or optical storage media (cd and dvd ''s) with1 a of a receiving device (3) for the exact adjustment of the circular unit under test, with respect to the scanning unit (4)2 an adjustment mechanism (5), which a change in position or a change of the beam path (6) between test object (2) and the scanning unit (4) makes it possible to,3 a scanning unit (4), which, by means of a semiconductor laser, preferably in a continuous operating mode (cw, 4.f), is operated, and4 to an evaluation unit (12) for the evaluation and / or processing of the items of information ascertained (12.c),characterized in that5 the testing device (1) by way of at least two scanning units (4) and optical paths are formed (6), which are directed on the unit under test, and5.1 the rays course (6) by means of positioning units (5), which is disposed on the mirror (7), are deflected so that the optical paths are formed (6) in each case with respect to the surface of the unit under test run at different angles,5.2 with a plurality of optical paths are formed on a small area to concentrate,..