Patent ID: 6940802
Filing Date: 2005-09-06
Classification: G11B

Abstract:
1. An optical scanning device comprising: a basic part; an optical lens system with an optical axis for focusing a radiation beam into a scanning spot on an information carrier; an actuator for displacing the lens system relative to the basic part of the scanning device in a direction parallel to the optical axis, the actuator being provided with; an electric coil arranged around the lens system, which electric coil is provided with; wire portions which extend substantially perpendicular to the optical axis and, viewed in a direction parallel to the optical axis, are arranged next to one another; and a passage for a radiation beam path extending substantially perpendicular to the optical axis; and in which the electric coil is adapted for winding the coil in site about a coil holder to which the lens system is attached, the passage in the coil being formed within a side of the electric coil by further wire portions of the coil, which are situated near the radiation beam path, and extend in a direction substantially parallel to the optical axis.