| 摘要 |
A holder (60) is suspended on a carriage (21), and a magnetic circuit (32, 45, 46, 47) is disposed adjacent to the holder (60). The magnetic circuit has a first magnetic pole (46) and a second magnetic pole (47). A focus coil (63) having a magnetic flux receiving portion (63a) is provided around a vertical axis of the holder (60). A tracking coil (66) having a magnetic flux receiving portion (66a) is provided around a horizontal axis of the holder (60). Both the magnetic flux receiving portions (63a, 66a) are disposed so as not to be overlapped with each other, and are disposed in parallel with one of the surfaces of the first and second magnetic poles (46, 47). Both of the magnetic flux receiving portions (63a, 66a) are flush with each other. <MATH> |
