System for actively controlling the lense of an optical pickup when not in operation

摘要

The present invention relates to an optical media system ( 40 ) for suppressing externally induced rattle of an optical media pickup. The system ( 40 ) comprises: an optical pickup ( 41 ) for reading from and/or writing to an optical storage medium ( 43 ), the optical pickup ( 41 ) having one or more sources of light ( 61 ), an objective lens ( 2 ), a focus and/or tracking actuator ( 1 ) for moving the lens ( 2 ) to focus and/or track the light on the optical medium ( 43 ) and mechanical limits to limit the focus and/or tracking movement of the lens ( 2 ); and an actuator controller ( 58 ) for controlling the actuator ( 1 ) and hence the focus and/or tracking position of the lens ( 2 ), characterised in that the actuator controller ( 58 ) actively controls the lens position when the optical pickup ( 41 ) is not being used with the optical medium ( 43 ).