Invention Grant
- Patent Title: Optical pickup device and collimate lens
- Patent Title (中): 光学拾取装置和准直透镜
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Application No.: US12667877Application Date: 2008-10-10
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Publication No.: US08009526B2Publication Date: 2011-08-30
- Inventor: Kanji Wakabayashi , Fumitomo Yamasaki , Yoshiaki Komma , Hironori Tomita
- Applicant: Kanji Wakabayashi , Fumitomo Yamasaki , Yoshiaki Komma , Hironori Tomita
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2007-264309 20071010
- International Application: PCT/JP2008/002866 WO 20081010
- International Announcement: WO2009/047907 WO 20090416
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
It is an object of the present invention to provide an optical pickup device being capable of correcting coma aberration induced in a light-condensing optical system including an objective lens for an optical disc and having a reduced size and a reduced thickness in comparison with the conventional art. The present invention includes a first coma-aberration correction actuator (6) including a first tilt drive portion for inclining an objective lens in a first tilt direction, and a second coma-aberration correction actuator (7) including a second tilt drive portion for inclining, in a second tilt direction, a coma-aberration correction lens placed between a light source and a raising mirror for reflecting emitted light toward the objective lens.
Public/Granted literature
- US20100177621A1 OPTICAL PICKUP DEVICE AND COLLIMATE LENS Public/Granted day:2010-07-15
Information query
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