发明申请
US20060077857A1 Optical information recording apparatus and method for recording optical information
审中-公开
用于记录光学信息的光学信息记录装置和方法
- 专利标题: Optical information recording apparatus and method for recording optical information
- 专利标题(中): 用于记录光学信息的光学信息记录装置和方法
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申请号: US11227271申请日: 2005-09-16
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公开(公告)号: US20060077857A1公开(公告)日: 2006-04-13
- 发明人: Akiko Hirao , Kazuki Matsumoto , Rumiko Hayase , Takayuki Tsukamoto
- 申请人: Akiko Hirao , Kazuki Matsumoto , Rumiko Hayase , Takayuki Tsukamoto
- 专利权人: KABUSHIKI KAISHA TOSHIBA
- 当前专利权人: KABUSHIKI KAISHA TOSHIBA
- 优先权: JPP2004-278273 20040924
- 主分类号: G11B7/135
- IPC分类号: G11B7/135
摘要:
The optical information recording apparatus includes a laser light source for radiating a light beam, a spatial light modulator disposed on an optical path of the light beam, a power density control mechanism disposed on the optical path, an interference fringe formation mechanism. The spatial light modulator has pixels arranged in a two-dimensional array at which a central section of the light beam is radiated. The spatial light modulator spatially modulates the light beam. The power density control mechanism is set such that the transmittance with respect to the light beam at a portion where the central section is radiated is lower than that at which a peripheral section of the light beam is radiated. The interference fringe formation mechanism forms interference fringes from the central section and the peripheral section on the optical information recording medium disposed downstream on the optical path.