Invention Grant
US07903309B2 Optical informational recording/reproduction device and method 有权
光信息记录/再现设备及方法

  • Patent Title: Optical informational recording/reproduction device and method
  • Patent Title (中): 光信息记录/再现设备及方法
  • Application No.: US10556651
    Application Date: 2004-05-13
  • Publication No.: US07903309B2
    Publication Date: 2011-03-08
  • Inventor: Hideyoshi Horimai
  • Applicant: Hideyoshi Horimai
  • Applicant Address: JP Kanagawa
  • Assignee: Optware Corporation
  • Current Assignee: Optware Corporation
  • Current Assignee Address: JP Kanagawa
  • Agency: DLA Piper LLP (US)
  • Priority: JP2003-171394 20030513
  • International Application: PCT/JP2004/006464 WO 20040513
  • International Announcement: WO2004/102542 WO 20041125
  • Main IPC: G03H1/10
  • IPC: G03H1/10
Optical informational recording/reproduction device and method
Abstract:
An optical information recording device, a reproduction device, and a method enabling include a first spatial light modulator I for generating information light by spatially modulating light from a light source 143 by a plurality of pixels and a second spatial light modulator R for generating reference light by spatially modulating light from a light source by a plurality of pixels. The area I of the information light and the area R of the reference light on the entrance pupil surface of an objective lens 111 are formed such that one area surrounds the other area. The reference light is spatially modulated by the second spatial light modulator R such that interference is not easily generated between the reference lights in the information recording layer 3.
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