Optical pickup apparatus

Details Optical pickup apparatus Optical pickup apparatus

2005-02-09

2008-08-26

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112230, C369S053190, C369S044320

Reexamination Certificate

active

07417937

ABSTRACT:
Astigmatism of a beam of first laser light is cancelled at a position separated from first optical element by a predetermined distance on an optical axis of the beam of first laser light by refracting to transmit the beam of the first laser light by being refracted by rotating by a predetermined angle around an axis orthogonal to the optical axis of the beam of the first laser light, refracting a beam of second laser light to coincide with the optical axis of the beam of the first laser light and rotating by a predetermined angle around a second axis orthogonal thereto.

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Machine Translation of JP Publication No. 2001006205 on Jan. 12, 2001 by Asakawa Hideki.

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