Optical pickup apparatus

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium

Reexamination Certificate

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Details

C369S112230

Reexamination Certificate

active

07095702

ABSTRACT:
The present invention relates to an optical pickup apparatus enabling to reproduce/record data of different kinds of disks in different thicknesses, using one single optical pickup. The optical pickup apparatus includes two objective lens, in which one objective lens has an incident plane and an outgoing plant formed of a flat plane at a designated radius domain from an optical axis, thereby preventing spherical aberration caused by the difference of the thickness between different kinds of disks.

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