发明公开
EP2228793A1 Multilayer coaxial holographic storage system
审中-公开
Koaxiales holografisis Mehrschicht-Speichersystem
- 专利标题： Multilayer coaxial holographic storage system
- 专利标题（中）： Koaxiales holografisis Mehrschicht-Speichersystem
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申请号： EP09305225.6申请日： 2009-03-11
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公开(公告)号： EP2228793A1公开(公告)日： 2010-09-15
- 发明人: Knittel, Joachim , Trautner, Heiko
- 申请人： Thomson Licensing
- 申请人地址： 1-5, rue Jeanne d'Arc 92130 Issy-les-Moulineaux FR
- 专利权人： Thomson Licensing
- 当前专利权人： Thomson Licensing
- 当前专利权人地址： 1-5, rue Jeanne d'Arc 92130 Issy-les-Moulineaux FR
- 代理机构： Schmidt-Uhlig, Thomas
- 主分类号： G11B7/0065
- IPC分类号： G11B7/0065 ; G11B7/135
摘要：
The present invention relates to an apparatus (1) for reading from and/or writing to a multilayer holographic storage medium (12) with a coaxial arrangement of a reference beam (2a) and an object beam (2b) or a reconstructed object beam (2c). The apparatus (1) has an objective lens (11) for focusing the reference beam (2a) into the multilayer holographic storage medium (12). According to the invention the reference beam (2a) has a focal point behind or before a reflective layer (13) of the multilayer holographic storage medium (12).
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