发明名称 |
Optical information recording medium, optical information recording/reproducing device and optical information recording/reproducing method |
摘要 |
A holographic recording medium in which information can be reproduced by phase conjugate beam without requiring a mirror for obtaining the phase conjugate beam and its driving part and recording density is not reduced. The recording medium includes a recording layer in which an interference pattern is recorded and a light absorption/transmission layer which can be reversibly changed to be in a first state where signal beam and reference beam passed through the recording layer are absorbed at the time of recording of information and a second state where the reference beam is transmitted at the time of reproduction of information, and the reference beam transmitted through the light absorption/transmission layer is reflected by a reflection layer to produce the phase conjugate beam. |
申请公布号 |
US8699310(B2) |
申请公布日期 |
2014.04.15 |
申请号 |
US20080680612 |
申请日期 |
2008.08.06 |
申请人 |
SHIMADA KENICHI;IDE TATSURO;SHIMANO TAKESHI;MIYAMOTO HARUKAZU;HITACHI CONSUMER ELECTRONICS CO., LTD. |
发明人 |
SHIMADA KENICHI;IDE TATSURO;SHIMANO TAKESHI;MIYAMOTO HARUKAZU |
分类号 |
G11B7/0065 |
主分类号 |
G11B7/0065 |
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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