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Invention Grant
US07426078B2 Plastic lens, manufacturing method thereof, production tracing management method thereof, and optical pickup device 有权
塑料透镜及其制造方法，生产跟踪管理方法以及光学拾取装置

  • Patent Title: Plastic lens, manufacturing method thereof, production tracing management method thereof, and optical pickup device
  • Patent Title (中): 塑料透镜及其制造方法，生产跟踪管理方法以及光学拾取装置
  • Application No.: US10721458
    Application Date: 2003-11-26
  • Publication No.: US07426078B2
    Publication Date: 2008-09-16
  • Inventor: Tadahiro Kuwa
  • Applicant: Tadahiro Kuwa
  • Applicant Address: JP Osaka
  • Assignee: Hitachi Maxell, Ltd.
  • Current Assignee: Hitachi Maxell, Ltd.
  • Current Assignee Address: JP Osaka
  • Agency: Oliff & Berridge, PLC
  • Priority: JP2002-342775 20021126
  • Main IPC: G02B3/00
  • IPC: G02B3/00 ;  G11B7/00
Plastic lens, manufacturing method thereof, production tracing management method thereof, and optical pickup device
Abstract:
A lens has a flange part at the outer periphery of its surface. A flange surface of the flange part is higher than the lens surface. The flange surface has a marking to identify a production jig, for example.
Abstract(Chinese):

透镜在其表面的外周具有凸缘部分。 凸缘部分的凸缘表面高于透镜表面。 例如，凸缘表面具有用于识别生产夹具的标记。

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