| 摘要 |
<p>The present invention provides for an optical pick-up unit having a lens arrangement for driven movement in the direction of an optical disk, a counterweight mass member mounted in a manner so as to be moveable in the direction of the disk when the optical pick-up unit experiences an impact force, such as, for example, if it is dropped, the mass and lens arrangement each having respective engagement formations arranged to achieve contact during movement of the lens arrangement and the mass member in the relative direction of the disk such contact serving to arrest the movement of the lens arrangement in the said relative direction of the disk.</p> |
