| 摘要 |
PROBLEM TO BE SOLVED: To provide a collision preventing device for an optical pickup part wherein the whole shape of an actuator part is thinned and lightened and also the life of products is not shortened by temperature rising of a driving coil and the generation of a deformation in a member for supporting the actuator part or complicated constitution such as an acceleration detecting means is not necessitated. SOLUTION: In the optical pickup part 8, a magnet part 11 is fixed to its substrate, and the actuator part 9 is disposed inside its magnetism forming part. The actuator part 9 is held via a flexible supporting part 13 supported in cantilever by a supporting part 12, a lens 10 is attached to the central part and the driving coil 9a is provided in the periphery. In a circuit connected to the optical pickup part 8, a control circuit part a is composed by adding a 'detecting means' and a new 'controller' to a conventional focus servo control circuit. |
