Patent ID: 8023367

Claim:
An object lens actuator, comprising: an object lens focusing light onto a recording surface of an optical disc; a lens holder mounted with the object lens; a focusing coil for operating the lens holder in a focusing direction; tracking coils for operating the lens holder in a tracking direction, the tracking coils together with the object lens, the lens holder and the focusing coil forming a moving part; a plurality of support members formed in a linear shape and supporting the moving part to allow the moving part to move relative a stationary element in the focusing direction and the tracking direction; substrates making an electrical connection between leading ends of the support members and the respective focusing and tracking coils by way of soldering; a magnetic circuit including a yoke and magnets for generating magnetic flux in the focusing coil and the tracking coils; a cover having stoppers provided above the yoke and protruding toward the moving part, wherein the lens holder is provided with stopper receiving faces making contact with the stoppers to limit the amount of travel of the moving part in a direction in which the moving part moves toward the optical disc; and a solder-flux adhesion preventing gadget provided in a range from the substrate to each of the stopper receiving faces.