Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1996-06-13
1998-04-28
Hellner, Mark
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
359814, G11B 0700
Patent
active
057454477
ABSTRACT:
A three-axis moving actuator for an optical pickup has a base, an object lens positioned on an optical axis, and a lens holder having two side planes parallel with a radial direction of a disk track and two side planes parallel with a tangential direction of the disk track. The object lens is fixed to the lens holder. A plurality of suspension members is provided for supporting the lens holder such that the lens holder is movable above the base. First and third magnets are installed on the base to face the two side planes parallel with the radial direction of the disk track, respectively, and second and fourth magnets are installed on the base to face the two side planes parallel with the tangential direction of the disk track, respectively. A focus coil is wound around the lens holder, and first to fourth tracking coil pairs are attached to the focus coil to face the first to fourth magnets, respectively.
REFERENCES:
patent: 5046820 (1991-09-01), Saekusa et al.
patent: 5561648 (1996-10-01), Song
patent: 5566149 (1996-10-01), Song
patent: 5579175 (1996-11-01), Kim et al.
Hellner Mark
Samsung Electronics Co,. Ltd.
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