Invention Grant
- Patent Title: Objective lens, optical pickup, and optical drive device
- Patent Title (中): 物镜,光学拾取器和光驱装置
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Application No.: US13225764Application Date: 2011-09-06
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Publication No.: US08477580B2Publication Date: 2013-07-02
- Inventor: Kenji Yamamoto , Noriaki Nishi , Kimihiro Saito
- Applicant: Kenji Yamamoto , Noriaki Nishi , Kimihiro Saito
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Wolf, Greenfield & Sacks, P.C.
- Priority: JP2010-204121 20100913
- Main IPC: G11B7/095
- IPC: G11B7/095 ; G11B7/135

Abstract:
Provided is an objective lens, which is provided in an optical pickup including a spherical aberration correction mechanism which performs a spherical aberration correction with respect to laser light applied to a recording layer of an optical recording medium, having the recording layer on which information can be recorded at a plurality of positions in a depth direction, via the objective lens, and a tilt correction unit which varies a lens tilt angle which is a tilt angle of the objective lens, thereby performing a tilt correction.
Public/Granted literature
- US20120063287A1 OBJECTIVE LENS, OPTICAL PICKUP, AND OPTICAL DRIVE DEVICE Public/Granted day:2012-03-15
Information query
IPC分类: