| 摘要 |
PURPOSE:To clean dust or trash to be sticked to a reflecting member and to prevent the recording defect or the reproducing defect of information by providing a fine bristle-shaped cleaning member to fall-down in the upper direction of the reflecting member at the time of cleaning and to be vibrated in a state that the tips of the bristles get contact with the surface of the reflecting member, along the outer peripheral part of an objective lens. CONSTITUTION:On the lower surface of a bobbin 4, a fine bristle-shaped cleaning member 10 is planted and this cleaning member 10 is arranged along the outer peripheral part of an objective lens 2. In the bobbin 4, an interval between the objective lens 2 and a reflection mirror 3, which is arranged to be faced to this objective lens, is the optical path of a laser beam and accordingly, a through hole 12 is provided. Therefore, the laser beam reflected by the reflection mirror 3 is passed through the cleaning member 10 and the through hole 12 and made incident to the objective lens 2. At the time of cleaning, the cleaning member falls down and is driven so as to be vibrated in the state that the tips of the bristles can get contact with the surface of the reflecting member. Thus, the dust or trash sticked to the surface of the reflecting member is swept off and the surface of the reflecting member is cleaned. |
