Optical pickup actuator that removes phase dispersion by a...

Details Optical pickup actuator that removes phase dispersion by a... Optical pickup actuator that removes phase dispersion by a...

2007-12-11

2007-12-11

Huber, Paul W. (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

Reexamination Certificate

active

10884262

ABSTRACT:
The present invention discloses an optical pickup actuator including a lens holder having an object lens, and a driving means for changing a position of the lens holder by using an electromagnetic force. The driving means includes multipolar magnets and tracking coils for changing the position of the lens holder to the tracking direction, each of the tracking coils has a top coil, a bottom coil and side coils, and the whole or part of the side coils has an angle smaller than 90° to a horizontal line.

REFERENCES:
patent: 5949590 (1999-09-01), Hong
patent: 6278669 (2001-08-01), Anzai et al.
patent: 6741543 (2004-05-01), Suzuki et al.
patent: 6825999 (2004-11-01), Suzuki et al.

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