发明授权
- 专利标题: Hologram recording device
- 专利标题(中): 全息记录装置
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申请号: US12048935申请日: 2008-03-14
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公开(公告)号: US07755819B2公开(公告)日: 2010-07-13
- 发明人: Kazushi Uno , Kouichi Tezuka , Hiroyasu Yoshikawa , Yasumasa Iwamura , Yuzuru Yamakage
- 申请人: Kazushi Uno , Kouichi Tezuka , Hiroyasu Yoshikawa , Yasumasa Iwamura , Yuzuru Yamakage
- 申请人地址: JP Kawasaki
- 专利权人: Fujitsu Limited
- 当前专利权人: Fujitsu Limited
- 当前专利权人地址: JP Kawasaki
- 代理机构: Greer, Burns & Crain, Ltd.
- 主分类号: G03H1/10
- IPC分类号: G03H1/10
摘要:
A hologram recorder (A2) includes: a light source (10) for emitting a coherent beam; a spatial light modulator (20) provided with unit areas having a plurality of beam reflection elements (21) to reflect the beam from the light source (10) in a main direction as a signal beam or a cut-off direction; and a signal beam optical system (30, 31) for directing the signal beam to the hologram recording medium (B). The recorder (A2) further includes: a wavefront reshaper (40, 41, 42) for condensing the beams thinned out in the cut-off direction by the beam reflection element (21) of the modulator (20), and reshaping the wavefront of the condensed beams; and a reference beam optical system (50, 51) for directing the beam from the reshaper (40, 41, 42) to the recording medium (B) as a reference beam to be shone in an overlapping manner with the signal beam.
公开/授权文献
- US20080198429A1 HOLOGRAM RECORDING DEVICE 公开/授权日:2008-08-21
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