发明申请
US20090080038A1 LIGHT GUIDE OPTICAL SYSTEM, DOCUMENT ILLUMINATING DEVICE USING SAME, AND IMAGE READING APPARATUS USING SAME 有权
光导光学系统,使用该光学系统的文件照明设备和使用其的图像读取装置

  • 专利标题: LIGHT GUIDE OPTICAL SYSTEM, DOCUMENT ILLUMINATING DEVICE USING SAME, AND IMAGE READING APPARATUS USING SAME
  • 专利标题(中): 光导光学系统,使用该光学系统的文件照明设备和使用其的图像读取装置
  • 申请号: US12212107
    申请日: 2008-09-17
  • 公开(公告)号: US20090080038A1
    公开(公告)日: 2009-03-26
  • 发明人: Tadao HayashideTakayuki Sugiyama
  • 申请人: Tadao HayashideTakayuki Sugiyama
  • 申请人地址: JP Tokyo
  • 专利权人: CANON KABUSHIKI KAISHA
  • 当前专利权人: CANON KABUSHIKI KAISHA
  • 当前专利权人地址: JP Tokyo
  • 优先权: JP2007-247468 20070925
  • 主分类号: H04N1/04
  • IPC分类号: H04N1/04
LIGHT GUIDE OPTICAL SYSTEM, DOCUMENT ILLUMINATING DEVICE USING SAME, AND IMAGE READING APPARATUS USING SAME
摘要:
A light guide optical system guides a plurality of light beams emitted from a plurality of point light sources arranged linearly to a predetermined surface. The light guide optical system has a plurality of optical surfaces arranged periodically in the arrangement direction of the plurality of point light sources. Each of the plurality of optical surfaces has power in the arrangement direction of the plurality of point light sources.
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