Abstract: A focus servo lead-in method is implemented where the focus servo loop is first in an open state. An objective lens located at a position separated by a predetermined distance from the recording surface of a disk is first moved toward the recording surface at a high velocity. At a predetermined time, the moving velocity is decreased to a lower velocity and the focus servo loop is brought to a closed state based on the level of the focus error signal obtained while the objective lens is moving at the lower velocity.

Abstract: A movable-member supporting apparatus for supporting a movable member such as an optical pickup and suppressing vibration thereto. The movable-member supporting apparatus comprises a connecting portion for connecting a movable member to a fixed member, a flexible portion provided at an end portion of the connecting portion and arranged to be flexible in the longitudinal direction of the connecting portion and at least in one direction substantially perpendicular to the longitudinal direction, and a vibration-suppressing member attached to the flexible portion for suppressing vibrations of the flexible member.

Abstract: A support structure of an optical part placed in an optical path of a light beam of a system for optically reading out recorded information, such as a video disc player system, including a first servo control system incorporating the optical part and a second servo control system respectively controlling a direction of the light beam in a pair of directions which are perpendicular to each other, the support structure supporting the optical part via an elastic member for permitting a movement of the optical part in accordance with an operation of the first servo control system.