Invention Grant
- Patent Title: Optical pickup device and optical disc device
- Patent Title (中): 光拾取装置和光盘装置
-
Application No.: US12084260Application Date: 2006-09-19
-
Publication No.: US08018799B2Publication Date: 2011-09-13
- Inventor: Daisuke Matsubara , Masahisa Shinoda
- Applicant: Daisuke Matsubara , Masahisa Shinoda
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP.
- Priority: JP2005-318176 20051101
- International Application: PCT/JP2006/318511 WO 20060919
- International Announcement: WO2007/052419 WO 20070510
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
An optical pickup device is provided. The optical pickup device includes a first, second, and third light emitting portions emitting light beams having first, second, and third wavelengths, respectively; an adjusting element for optical axes enabled to control the optical axis of the return light beam reflected by the optical recording media after output from the light emitting portion, and a single photo detector receiving the return light beams passing through the adjusting element for optical axes. The first light emitting portion and the second light emitting portion are arranged in such a way that the optical axis of the first light beam and the optical axis of the third light beam approximately coincide with each other. The adjusting element for optical axes controls the axis of the return light beam of said second light beam and the single photo detector receives the return light beams of the first light beam, the second light beam and the third light beam.
Public/Granted literature
- US20090135701A1 Optical Pickup Device and Optical Disc Device Public/Granted day:2009-05-28
Information query
IPC分类: