发明名称 |
OPTICAL SCANNING DEVICE COMPRISING A BENT ACTUATOR COIL |
摘要 |
The invention relates to an optical scanning device (17) for scanning an information track which is present on an information carrier (9). The scanning device comprises a radiation source (31), a lens system (43) with an optical axis (45) for focusing a radiation beam (47) supplied by the radiation source into a scanning spot (55) on the information carrier, and a focusing actuator (65) for displacing the lens system relatively to a basic part (29) of the scanning device in a direction parallel to the optical axis. The actuator comprises an electric coil (69) which is arranged around the lens system and provided with a passage (95) for a radiation beam path (49) which extends in a direction perpendicular to the optical axis. According to the invention, the electric coil is provided around the lens system by means of a winding process, the passage being provided in the coil by bending the parts (97) of the coil wires which are present near the radiation beam path, in a direction substantially parallel to the optical axis. In a preferred embodiment, said parts of the coil wires are bent during the winding process by means of a mandrel which is present in the passage during the winding process. In this manner, the optical scanning device according to the invention can be manufactured in a simple manner by means of a reduced number of process steps. The optical scanning device according to the invention can be used in an optical disc player according to the invention.
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申请公布号 |
WO0068942(A1) |
申请公布日期 |
2000.11.16 |
申请号 |
WO2000EP03792 |
申请日期 |
2000.04.25 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
STINESEN, BERNARDUS, J.;HAUS, THOMAS, A., J.;VAN EIJNDHOVEN, PIERRE |
分类号 |
G11B7/09;G11B7/22;(IPC1-7):G11B7/09 |
主分类号 |
G11B7/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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