发明授权
- 专利标题: Recording apparatus for a holographic recording medium including an alignment laser having a different wavelength from the recording laser
- 专利标题(中): 包括具有与记录激光器不同的波长的对准激光的全息记录介质的记录装置
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申请号: US09956972申请日: 2001-09-21
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公开(公告)号: US07061852B2公开(公告)日: 2006-06-13
- 发明人: Takayuki Tsukamoto , Kazuki Matsumoto , Hideyuki Nishizawa , Akiko Hirao
- 申请人: Takayuki Tsukamoto , Kazuki Matsumoto , Hideyuki Nishizawa , Akiko Hirao
- 申请人地址: JP Tokyo
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权: JP2000-301069 20000929
- 主分类号: G11B7/00
- IPC分类号: G11B7/00
摘要:
A recording apparatus for holographic recording medium having an alignment mark and designed to irradiate a recording light beam onto a recording region of holographic recording medium to record information as a hologram. This apparatus comprises a recording laser recording the hologram onto the medium, an alignment laser irradiating an alignment light beam onto the medium, the alignment light beam being less absorbed than the recording light beam by the medium, and being reflected by the medium, a first lens converging the recording light beam and directing it toward the medium, a second lens converging the alignment light beam and directing it toward the medium, a photodetector detecting a light intensity of the alignment light beam reflected from the medium to recognize the alignment mark, and a driving mechanism adjusting a region to be irradiated with the recording light beam relative to the medium based on the alignment mark.
公开/授权文献
- US20020041561A1 Recording apparatus for a holographic recording medium 公开/授权日:2002-04-11