Invention Grant
- Patent Title: Optical pickup apparatus
- Patent Title (中): 光拾取装置
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Application No.: US12147564Application Date: 2008-06-27
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Publication No.: US07898910B2Publication Date: 2011-03-01
- Inventor: Tohru Hotta , Ryoichi Kawasaki
- Applicant: Tohru Hotta , Ryoichi Kawasaki
- Applicant Address: JP Osaka JP Tokyo
- Assignee: Sanyo Electric Co., Ltd.,Sanyo Optec Design co., Ltd.
- Current Assignee: Sanyo Electric Co., Ltd.,Sanyo Optec Design co., Ltd.
- Current Assignee Address: JP Osaka JP Tokyo
- Agency: Fish & Richardson P.C.
- Priority: JP2007-185575 20070717
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
An optical pickup apparatus comprising: a first objective lens; and a second objective lens arranged with the first objective lens in a radial direction of an optical disc, the first objective lens being configured to focus laser light for reproduction, which is laser light for reproducing a signal recorded in a signal recording layer of the optical disc, onto the signal recording layer, the second objective lens being configured to focus laser light for recording, which is laser light for recording a signal, onto the signal recording layer.
Public/Granted literature
- US20090022037A1 OPTICAL PICKUP APPARATUS Public/Granted day:2009-01-22
Information query
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