发明申请
- 专利标题： Hologram recorder
- 专利标题（中）： 全息记录仪
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申请号： US11359087申请日： 2006-02-22
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公开(公告)号： US20060221419A1公开(公告)日： 2006-10-05
- 发明人: Hiroyasu Yoshikawa , Kouichi Tezuka , Kazushi Uno
- 申请人： Hiroyasu Yoshikawa , Kouichi Tezuka , Kazushi Uno
- 专利权人： FUJITSU LIMITED
- 当前专利权人： FUJITSU LIMITED
- 优先权： JP2005-098124 20050330
- 主分类号： G02B5/32
- IPC分类号： G02B5/32
摘要：
A hologram recorder is provided for recording a hologram on a hologram recording medium by interference of a recording beam with a reference beam. The recorder includes a light source for outputting coherent light to be split into the recording beam and the reference beam; a spatial light modulator for modulating the recording beam into a form representing information to be recorded; an objective lens for outputting the recording beam; and a phase shift mask provided at a light entering surface of the spatial light modulator. The mask is configured to allow the recording beam to pass through, and also to partially shift the phase of the recording beam passing through the mask.
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