Optical means drive device

In the conventional optical means drive device having a plurality of objective lenses mounted, a lens holder has an insert hole for inserting an internal yoke and it has been difficult to increase the rigidity and enhance the secondary resonance. [MEANS FOR SOLVING PROBLEMS] An optical means drive d...

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Bibliographic Details
Main Authors NAKAMURA KEIJI, YABE MITORU
Format Patent
LanguageChinese
English
Published 01.04.2009
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:In the conventional optical means drive device having a plurality of objective lenses mounted, a lens holder has an insert hole for inserting an internal yoke and it has been difficult to increase the rigidity and enhance the secondary resonance. [MEANS FOR SOLVING PROBLEMS] An optical means drive device includes: a holder for holding a plurality of optical means for collecting light flux outputted from a light source onto an optical disc, a focusing coil, and a tracking coil; a plurality of elastic support members for supporting the holder in such a manner that the holder can move in the substantially radial direction of the optical disc and in the direction substantially vertical to the optical disc; and a base for holding a magnet for generating a magnetic field for the inner yoke, focusing coil, and the tracking coil arranged in the holder. The inner yoke in the holder has a closed upper surface.
Bibliography:Application Number: CN2007809062