发明授权
- 专利标题: Holographic recording device and holographic recording method
- 专利标题(中): 全息记录装置和全息记录方法
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申请号: US11487746申请日: 2006-07-17
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公开(公告)号: US07508560B2公开(公告)日: 2009-03-24
- 发明人: Nobuhiro Kihara
- 申请人: Nobuhiro Kihara
- 申请人地址: JP Tokyo
- 专利权人: Sony Corporation
- 当前专利权人: Sony Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Frommer Lawrence & Haug, LLP
- 代理商 William S. Frommer; Thomas F. Presson
- 优先权: JP2005-208817 20050719
- 主分类号: G03H1/26
- IPC分类号: G03H1/26 ; G03H1/00
摘要:
A holographic recording device for multiple recording a plurality of interference fringes of a reference light and intensity-modulated signal lights in a same area or in areas slightly shifted each other of a holographic recording medium is disclosed. The holographic recording device modulates the intensity of a signal light and modulates a phase of the signal light before or after the intensity modulation. A phase distribution of each signal light is changed every time when multiple recording is performed and after each phase modulation, the recording device determines if an assigned multiplicity has been achieved.
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