Multilayer optical recording medium having three or more recording layers with reduced interlayer crosstalk

In a multilayer optical recording medium having at least three recording layers, an influence of interlayer crosstalk due to unnecessary light is suppressed. Each of the recording layers includes an information recording area, and the recording layers other than the nearest recording layer and the f...

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Main Authors Hirotsune, Akemi, Kimura, Shigeharu, Kurokawa, Takahiro
Format Patent
LanguageEnglish
Published 20.11.2012
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Abstract In a multilayer optical recording medium having at least three recording layers, an influence of interlayer crosstalk due to unnecessary light is suppressed. Each of the recording layers includes an information recording area, and the recording layers other than the nearest recording layer and the farthest recording layer when viewed from a light incident side include a first annular area having uneven patterns formed thereon, and a second annular area having uneven patterns formed thereon, the first annular area being adjacent to an inner side of the information recording area, the second annular area being adjacent to an outer side of the information recording area.
AbstractList In a multilayer optical recording medium having at least three recording layers, an influence of interlayer crosstalk due to unnecessary light is suppressed. Each of the recording layers includes an information recording area, and the recording layers other than the nearest recording layer and the farthest recording layer when viewed from a light incident side include a first annular area having uneven patterns formed thereon, and a second annular area having uneven patterns formed thereon, the first annular area being adjacent to an inner side of the information recording area, the second annular area being adjacent to an outer side of the information recording area.
Author Hirotsune, Akemi
Kimura, Shigeharu
Kurokawa, Takahiro
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