Objective lens drive having a variable stiffness fixing member

Details Objective lens drive having a variable stiffness fixing member Objective lens drive having a variable stiffness fixing member

2003-10-23

2008-10-07

Feild, Joseph (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C720S682000

Reexamination Certificate

active

07433278

ABSTRACT:
In order to obtain a preferred recording/reproducing characteristic in an apparatus for optical disks having higher density, an objective lens drive is provided for driving an objective lens (1) in the optical axis direction, a direction perpendicular to the optical axis, and a tilting direction along the radius of an optical disk, by which operating sensitivity is improved and a stable operating characteristic is realized. Sections of two (7b,7e) of six fixing portions (7ato7f) for supporting six support members (6ato6f) which support a movable part (5), are set lower in stiffness than another sections of the other four fixing portions (7a,7c,7d,7f), thereby improving the operating sensitivity of the movable part (5) and stabilizing the operation of the movable part (5).

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