发明名称 |
RECORDING MEDIUM, OPTICAL DEVICE, AND RECORDING AND REPRODUCING APPARATUS |
摘要 |
A recording medium includes at least one recording layer on which information is recorded by multi-photon absorption, and a servo layer disposed in a laminated direction with respect to the recording layer and having a track for guiding a beam spot of laser light having a first wavelength and a beam spot of laser light having a second wavelength along a scanning trajectory. The servo layer and the at least one recording layer constitute a set of layers, and a plurality of sets of layers is formed in the laminated direction. The servo layer is made of a material having a high reflectance with respect to laser light having a third wavelength for generating a servo signal, and low reflectances with respect to the laser light having the first wavelength and the laser light having the second wavelength.
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申请公布号 |
US2009316537(A1) |
申请公布日期 |
2009.12.24 |
申请号 |
US20090541668 |
申请日期 |
2009.08.14 |
申请人 |
SANYO ELECTRIC CO., LTD. |
发明人 |
NAKATANI MORIO;NAGATOMI KENJI;MATSUMURA YOSHIYUKI;TAKAHASHI SEIICHIRO |
分类号 |
G11B7/00;G11B7/135;G11B7/24;G11B7/24038;G11B7/26 |
主分类号 |
G11B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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