Actuator apparatus for an optical data storage device.

摘要

An actuator apparatus for an optical data storage device having a rotating disc (16) for recording data along tracks in a recording layer (17) comprising a stationary light source (21) and an arm (13) movably relative to an axis (9) of the light beam (2) emitted from said light source (21), and an objective lens (14) for focusing the light beam into a spot (15) onto the recording layer (17) of said rotary disc (16) is characterized in that said arm (13) forms part of a coarse positioning means (25) and has said objective lens (14) at its free first end, and in that intermediate beam adjusting means (5) for fine positioning of the light beam (2) in at least two directions is mounted mechanically independently and upstream of said arm (13), in order to reduce the access time to data stored on said disc.