Slim optical pickup apparatus

Details Slim optical pickup apparatus Slim optical pickup apparatus

Filed on

2005-03-29

Date issued

2005-03-29

Examiner

Edun, Muhammad (Department: 2655)

Patent Class

Dynamic information storage or retrieval

SubClass

Specific detail of information handling portion of system

SubSubClass

Radiation beam modification of or by storage medium

Other Related Categories

C369S112010, C369S044230

Type

Reexamination Certificate

Status

active

Patent number

06873592

Description

ABSTRACT:
A slim optical pickup apparatus which records/reads information from a recording medium includes a light source, an objective lens which focuses a beam incident from the light source on the recording medium, an optical device which is provided on an optical path between the light source and the objective lens, and converts the beam incident from the light source into a parallel beam, an optical axis shifting unit which is provided on an optical path between the optical device and the objective lens, and shifts an optical axis of the parallel beam passing through the optical device in parallel in a direction, a reflecting mirror which is provided on an optical path between the optical axis shifting unit and the objective lens, and reflects the parallel beam passing through the optical axis shifting unit toward the recording medium, and a photodetector which receives a beam reflected from the recording medium and passed through the optical axis shifting unit, and performs a photoelectric conversion. Use of the optical path shifting unit reduces the height of an optical pickup apparatus, thereby providing a slim optical pickup apparatus using an existing light source and photodetector of a conventional size.

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patent: 11-134700 (1999-05-01), None
patent: 1996-2205 (1996-01-01), None
patent: 1998-4432 (1998-03-01), None

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