Invention Grant
- Patent Title: Optical pickup
- Patent Title (中): 光学拾音
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Application No.: US13733937Application Date: 2013-01-04
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Publication No.: US08605557B2Publication Date: 2013-12-10
- Inventor: Katsuhiko Kimura , Hidenao Saito , Jun Hato
- Applicant: Hitachi Media Electronics Co., Ltd.
- Applicant Address: JP Iwate
- Assignee: Hitachi Media Electronics Co., Ltd.
- Current Assignee: Hitachi Media Electronics Co., Ltd.
- Current Assignee Address: JP Iwate
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2012-009597 20120120
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
An optical pickup which excels in assembly workability and which can increase the drive force generated in a focusing coil is provided. The optical pickup has an objective lens, a lens holder holding the objective lens, and a first and a second focusing coil wound around the lens holder. The first focusing coil includes an upper part wound about a central axis extending in parallel with an optical axis of the objective lens and a lower part connected to the upper part. The second focusing coil includes an upper part wound, in a wiring system separate from the first focusing coil, about a central axis extending in parallel with the optical axis of the objective lens and a lower part connected to the upper part.
Public/Granted literature
- US20130188467A1 OPTICAL PICKUP Public/Granted day:2013-07-25
Information query
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