Invention Grant
- Patent Title: Optical pickup device and method of laying out the same
- Patent Title (中): 光拾取装置及其布置方法
-
Application No.: US11642730Application Date: 2006-12-21
-
Publication No.: US07903507B2Publication Date: 2011-03-08
- Inventor: Kenji Nagatomi , Seiji Kajiyama
- Applicant: Kenji Nagatomi , Seiji Kajiyama
- Applicant Address: JP Osaka
- Assignee: Sanyo Electric Co., Ltd.
- Current Assignee: Sanyo Electric Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2005-376247 20051227; JP2005-377003 20051228
- Main IPC: G11B7/00
- IPC: G11B7/00 ; G11B1/135

Abstract:
An optical pickup device is provided, in which, supposing that an angle formed by the meeting of a straight line connecting a center of an optical disk and an accessing position of an HD objective lens with a diameter L of the optical disk is a track angle θ1, an oscillation angle α of an optical system including an HD laser, an HD half mirror, and an HD sensor, and a distance z of the HD objective lens are set so as to satisfy α−(θ1max+θ1min)/2=±45°, where θ1max is the track angle θ1 when the HD objective lens is positioned at an innermost circumference of the optical disk, and θ1min is the track angle θ1 when the HD objective lens is positioned at an outermost circumference of the optical disk.
Public/Granted literature
- US20070147198A1 Optical pickup device and method of laying out the same Public/Granted day:2007-06-28
Information query
IPC分类: