Invention Grant
- Patent Title: Optical pickup and drive apparatus
- Patent Title (中): 光学拾取和驱动装置
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Application No.: US13418672Application Date: 2012-03-13
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Publication No.: US08473972B2Publication Date: 2013-06-25
- Inventor: Noriaki Terahara , Shinsuke Hatanaka , Toshiyasu Tanaka , Takeshi Ohta , Fumitomo Yamasaki
- Applicant: Noriaki Terahara , Shinsuke Hatanaka , Toshiyasu Tanaka , Takeshi Ohta , Fumitomo Yamasaki
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Renner, Otto, Boisselle & Sklar, LLP
- Priority: JP2011-056132 20110315
- Main IPC: G11B7/12
- IPC: G11B7/12

Abstract:
An optical pickup includes a lens holder; an objective lens provided on the lens holder and having an effective region for collecting light from a light source and an edge located outer to the effective region; and a lens protector provided on the lens holder. The lens protector protrudes toward an optical disc more than the objective lens. The edge of the objective lens includes a convexed portion protruding toward the optical disc. An apex of the effective region of the objective lens protrudes toward the optical disc more than the convexed portion of the edge. A straight line connecting a part of the edge of the objective lens and a part of the lens protector is closer to the optical disc than the apex of the effective region of the objective lens.
Public/Granted literature
- US20120240136A1 OPTICAL PICKUP AND DRIVE APPARATUS Public/Granted day:2012-09-20
Information query
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