Optical driving device including a holder with a top face...

Dynamic optical information storage or retrieval – Dynamic mechanism optical subsystem – Transducer carriage or actuator

Reexamination Certificate

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Reexamination Certificate

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08042130

ABSTRACT:
The optical driving device according to the present invention includes a holder for holding a plurality of optical each of which focuses on an optical disk a light beam outputted from a light source, focusing coils, and tracking coils; a plurality of elastic support members for supporting the holder so as to be movable in an approximately radial direction of the optical disk and in an approximately perpendicular direction to the optical disk; and a base for holding inner yokes placed inside the holder, and magnets that generate magnetic fields with respect to the focusing coils and to the tracking coils; as for the optical driving device, the top face of the holder has a closed structure over the inner yokes.

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