Optical pickup device and optical recording medium...

Details Optical pickup device and optical recording medium... Optical pickup device and optical recording medium...

2008-09-23

2008-09-23

Feild, Joseph (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S112020, C369S053200

Reexamination Certificate

active

10960926

ABSTRACT:
A control mechanism includes a medium wavefront aberration correction voltage generating unit and an optical system wavefront aberration correction voltage generating unit therein, and has a mechanism that independently corrects a medium wavefront aberration caused by a shape or the like of an optical recording medium and an optical system wavefront aberration caused by an optical system in an optical pickup mechanism. Further, it includes a liquid crystal panel as an aberration correcting unit, and is designed to apply voltages corresponding to corrections of the medium wavefront aberration and the optical system wavefront aberration to two transparent electrodes provided in the liquid crystal panel.

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patent: WO 03/049095 (2003-06-01), None

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