Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2007-10-04
2010-10-19
Agustin, Peter Vincent (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
Reexamination Certificate
active
07817524
ABSTRACT:
An optical head device100of the invention performs at least one of recording and reproducing of information for a plurality of types of optical recording mediums7. A light source1emits a plurality of kinds of light having mutually different wavelengths. The positions for emitting the plurality of kinds of light from the light source are mutually deviated. A center C1of first light2ais matched with a pattern center C3of a first diffracting plane3a. A center C2of second light2bis matched with a pattern center C4of a second diffracting plane3b. The optical head apparatus100provided with the light source in which two or more light emitting elements are mounted in one module can perform stable tracking control.
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Aikoh Hideki
Chokyu Yukihiro
Matsuzaki Keiichi
Wada Hidenori
Agustin Peter Vincent
Panasonic Corporation
Renner , Otto, Boisselle & Sklar, LLP
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