发明名称 OPTICAL PICKUP AND OPTICAL DISK DRIVE APPARATUS
摘要 An optical pickup includes an objective lens, a protection member for protecting the objective lens, and a lens holding member configured to hold these members. The optical pickup records and/or reproduces an information signal on and/or from an optical recording medium by condensing laser light through the objective lens. The protection member includes a bearing surface to contact a surface of an edge portion of the objective lens not facing the optical recording medium, an aperture to control a diameter of laser light to be incident on the objective lens, and a protection portion protruding toward the optical recording medium with respect to the objective lens. The bearing surface, the aperture, and the protection portion are integrally formed with one another.
申请公布号 US2009073855(A1) 申请公布日期 2009.03.19
申请号 US20080196797 申请日期 2008.08.22
申请人 CANON KABUSHIKI KAISHA 发明人 ISHII KAZUYOSHI
分类号 G11B7/135 主分类号 G11B7/135
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