Apparatus and method for measuring characteristics of optical pickup and/or optical disc

An apparatus for measuring characteristics of an optical pickup and/or an optical disc comprising:

• focusing servo control means responsive to an output of a photoelectric converting unit of the optical pickup for controlling a focal point position of a laser light beam illuminated on the optical disc, so as to form the laser light beam on a recording surface of the optical disc;
• laser control means for controlling the optical pickup for reciprocating the laser light along the radius of the optical disc;
• and
• characteristics detection means for detecting a signal for generating tracking error signals from an output of the photoelectric converting device of the optical pickup, for detecting a vicinity of a transition point in the movement direction of the illuminated position of the reciprocated laser light, for removing a signal portion of the signal generating the tracking error signals in the vicinity of the transition point and for measuring the characteristic values of the optical pickup and/or the optical disc based on the signal from which the signal portion in the vicinity of the transition point is removed.