Optical pickup

Details Optical pickup Optical pickup

2007-05-15

2007-05-15

Huber, Paul W. (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112120

Reexamination Certificate

active

10868597

ABSTRACT:
Regional borderlines that are the borderlines between the first region and the second region on a diffraction grating of an optical pickup partially overlap a group of y-axis parallel borderlines that are borderlines between pattern A and pattern B that are parallel to a direction parallel to the y-axis.

REFERENCES:
patent: 5648951 (1997-07-01), Kato et al.
patent: 6418095 (2002-07-01), Sano et al.
patent: 2001-250250 (2001-09-01), None
patent: WO 03/091999 (2003-11-01), None

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