Invention Grant
US07826332B2 Light-receiving element, optical head using the same, and optical recording/reproducing apparatus using the same 有权
光接收元件,使用其的光学头,以及使用该光接收元件的光学记录/再现装置

  • Patent Title: Light-receiving element, optical head using the same, and optical recording/reproducing apparatus using the same
  • Patent Title (中): 光接收元件,使用其的光学头,以及使用该光接收元件的光学记录/再现装置
  • Application No.: US11889444
    Application Date: 2007-08-13
  • Publication No.: US07826332B2
    Publication Date: 2010-11-02
  • Inventor: Tomohiko IshidaJun Ono
  • Applicant: Tomohiko IshidaJun Ono
  • Applicant Address: JP Tokyo
  • Assignee: TDK Corporation
  • Current Assignee: TDK Corporation
  • Current Assignee Address: JP Tokyo
  • Agency: Oliff & Berridge, PLC
  • Priority: JP2006-229510 20060825
  • Main IPC: G11B7/00
  • IPC: G11B7/00
Light-receiving element, optical head using the same, and optical recording/reproducing apparatus using the same
Abstract:
There are provided a light-receiving element for receiving light reflected from an optical recording medium, an optical head using the element, and an optical recording/reproducing apparatus using the element. In particular, the light-receiving element can be manufactured at low cost and in a simple manner and is configured to receive light from a short-wavelength laser source (having a wavelength of 402 nm to 413 nm). The light-receiving element includes a silicon substrate in which a light-receiving portion is formed; a circuit board for mounting the silicon substrate; at least one or more wires for electrically connecting the silicon substrate and the circuit board; a cover layer for covering the wires; and an exposed portion for exposing the light-receiving portion outside.
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