Patent ID: 7768879
Filing Date: 2010-08-03
Classification: G11B

Abstract:
1. An optical pickup comprising: a lens holder that holds an objective lens for converging a light beam on a signal recording layer of an optical disk; elastic support members that support the lens holder such that the lens holder can freely move in three driving directions, the three driving directions comprising a tracking direction, a focusing direction, and a tilting direction; a pair of coil units attached to two sides of the lens holder, the two sides being spaced in a tangential direction orthogonal to the focusing direction and tracking direction; and a pair of magnets arranged to face the corresponding coil units, wherein each of the pair of coil units comprises a tracking coil, a focusing coil, and a tilting coil for driving the lens holder in the three driving directions; wherein each of the pair of coil units is configured such that a distance between the focusing conductor and the tilting conductor is greater than a distance between adjacent portions of a tracking conductor forming the tracking coil; and the focusing coil and the tilting coil are formed by winding a focusing conductor of the focusing coil and a tilting conductor of the tilting coil together in parallel.