| 摘要 |
<p>The invention relates to a printed circuit board with printed coils thereon, which may be implemented in actuators for optical pickups. The coils generate magnetic fields, which interact with a constant magnetic field, so as to move an objective lens. The objective lens is moved in the focus, tilt and tracking direction so as to compensate for errors on an optical disc. It is suggested to reduce the necessary layers of the PCB by respectively interleaving two printed coils with each other, so as to form a compact and space-saving circuit. In particular, the coils for the focus and tilt function are interleaved with each other, and are further interconnected with additional interleaved focus and tilt coils on different sides and surfaces of the PCB, such that when corresponding currents are input into the respective coils, the PCB moves in a focus and tilt direction.</p> |
