发明授权
US07319550B2 Method and apparatus for recording hologram, method and apparatus for reproducing hologram, and information retaining body
有权
用于记录全息图的方法和装置,用于再现全息图的方法和装置以及信息保持体
- 专利标题: Method and apparatus for recording hologram, method and apparatus for reproducing hologram, and information retaining body
- 专利标题(中): 用于记录全息图的方法和装置,用于再现全息图的方法和装置以及信息保持体
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申请号: US11006614申请日: 2004-12-08
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公开(公告)号: US07319550B2公开(公告)日: 2008-01-15
- 发明人: Kazuhiro Hayashi , Katsunori Kawano , Yasuhiro Ogasawara , Jiro Minabe , Shin Yasuda , Hisae Yoshizawa , Norie Matsui
- 申请人: Kazuhiro Hayashi , Katsunori Kawano , Yasuhiro Ogasawara , Jiro Minabe , Shin Yasuda , Hisae Yoshizawa , Norie Matsui
- 申请人地址: JP Tokyo
- 专利权人: Fuji Xerox Co., Ltd.
- 当前专利权人: Fuji Xerox Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Oliff & Berridge, PLC
- 优先权: JP2004-119058 20040414
- 主分类号: G03H1/16
- IPC分类号: G03H1/16 ; G03H1/26 ; B42D15/00
摘要:
While Fourier transformation of a signal light beam is performed to perform recording during holographic recording so that a focal point is formed outside a holographic recording layer (defocus recording), an aperture is arranged on an outgoing side of the reproduced signal light beam (reproduction light beam), the reproduction light beam is focused at the aperture, and low-order components of a Fourier transform image of the reproduction light beam are selectively transmitted to detect only the transmitted light beam. Therefore, information recorded as the hologram in the holographic recording layer can be reproduced with high S/N ratio from the holographic recording layer added onto a support body, particularly onto a sheet member having non-optical quality such as paper and a plastic card.
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