Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1989-12-07
1992-09-01
Envall, Jr., Roy N.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 4422, G02B 2610
Patent
active
051446073
ABSTRACT:
An objective lens driving device employed in an optical pickup device of a recording and/or reproducing apparatus for an optical disk adapted to perform recording and/or reproduction of data signals on or from an optical disk as a recording medium includes an objective lens bobbin mounting an objective lens, objective lens supporting members for movably supporting the objective lens bobbin in the focusing direction and in the tracking direction, and an electromagnetic driving unit for driving the objective lens in the focusing and tracking directions simultaneously with the focusing coils and the tracking coils wound about the objective lens bobbin. The objective lens supporting member is formed by bending a single spring plate in the form of a rectangular frame and includes a pair of supporting arm sections extending parallel to each other, a pair of connecting plate sections interconnecting both ends of these supporting arm sections and resilient deflective sections formed in the connecting plate sections. These resilient deflective sections may be resiliently deflected in the direction at right angles with the deflection along the direction of thickness of the supporting arm sections, which direction is the direction of thickness of the connecting plate sections.
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Ishida Tomoyuki
Kobayashi Yuhei
Dang Hung
Envall Jr. Roy N.
Eslinger Lewis H.
Maioli Jay H.
Sony Corporation
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