Dynamic optical information storage or retrieval – Dynamic mechanism optical subsystem – Transducer carriage or actuator
Reexamination Certificate
2007-07-31
2007-07-31
Watko, Julie Anne (Department: 2627)
Dynamic optical information storage or retrieval
Dynamic mechanism optical subsystem
Transducer carriage or actuator
Reexamination Certificate
active
10911053
ABSTRACT:
An optical pickup device includes an objective lens holder having a pair of tracking coils and an objective lens fixed thereto, and a pair of magnets. The pair of tracking coils are rectangular or square in geometry. When the objective lens is not displaced in a tracking direction, one tracking coil has a vertical portion closer to a centerline, which passes through the pair of magnets at their respective centers, at a position distant from the centerline in a positive direction of rotation by a prescribed angle θ and the other tracking coil has a vertical portion closer to the centerline at a position distant from the centerline in a negative direction of rotation by the prescribed angle θ.
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Funai Electric Co. Ltd.
Osha & Liang LLP
Watko Julie Anne
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