Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2008-07-01
2008-07-01
Nguyen, Hoa T. (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S044220, C369S044240, C369S112240, C369S244100
Reexamination Certificate
active
07394732
ABSTRACT:
The present invention is directed to an object lens drive device adapted for moving an object lens in a focus direction of optical axis direction and in a tracking direction perpendicular to the optical axis direction, and includes a fixed position provided in such a manner that a supporting shaft is projected, a movable portion comprised of an object lens, and a bobbin adapted so that the object lens is attached and a hole through the supporting shaft is inserted is formed, the bobbin being supported movably along the supporting shaft and rotatably with the supporting shaft being as center, a drive portion including a magnet portion provided at either one of the fixed potion and the movable portion, and a coil portion provided at the other portion to move the movable portion along the supporting shaft to thereby move the object lens in the focus direction, and to rotate the bobbin with the supporting shaft being as center to thereby move the object lens in the tracking direction, and supporting means including a magnetic member for supporting the movable portion in the state inclined with respect to the supporting shaft.
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Higashihara Teruaki
Ikeda Naoto
Chu Kim
Nguyen Hoa T.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sony Corporation
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