Multilayer Optical Information Recording Medium, Optical Head, and Optical Drive
AssigneeRicoh Company, Ltd.
InventorsShigeyoshi Misawa, Shigeru Oouchida
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Abstract
A disclosed optical recording medium includes multiple recording layer units in each of which one or more recording layers and one or more middle layers are stacked alternately; and one or more spacer layers. In the disclosed optical recording medium, the recording layer units and the spacer layers are stacked alternately in a depth direction of the optical recording medium.
Claims37
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An optical recording medium, comprising:
- multiple multilayer units each including
- a guide layer corresponding to light with a first wavelength, and
- multiple recording layers corresponding to light with a second wavelength that is different from the first wavelength;
- wherein the multilayer units are stacked in a depth direction of the optical recording medium.
An optical recording medium, comprising:
- multiple guide layers corresponding to light with a first wavelength;
- and
- multiple recording layers corresponding to light with a second wavelength that is different from the first wavelength.
An optical recording medium, comprising:
- multiple multilayer units each including
- multiple guide layers corresponding to light with a first wavelength, and
- multiple recording layers corresponding to light with a second wavelength that is different from the first wavelength;
- wherein the multilayer units are stacked in a depth direction of the optical recording medium.
Dependencies are inferred from the claim text.