Semiconductor laser unit and optical head device

Details Semiconductor laser unit and optical head device Semiconductor laser unit and optical head device

2007-09-04

2007-09-04

Tran, Thang V. (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C372S009000, C257S098000

Reexamination Certificate

active

10976811

ABSTRACT:
A semiconductor laser unit includes a plurality of semiconductor laser elements arranged parallel with one another in a laser beam-emitting direction, and a base for positioning and fixing the plurality of semiconductor laser elements. The plurality of semiconductor laser elements are arranged such that a laser beam emitted from the semiconductor laser element greatest in astigmatism, of the plurality of semiconductor laser elements, is coincident in its axis with a reference axis of the base. In the case that the semiconductor laser unit is arranged on an optical head device, the focusing characteristic on the plurality of laser beams can be improved.

REFERENCES:
patent: 6130872 (2000-10-01), Sugiura et al.
patent: 6654336 (2003-11-01), Kadowaki et al.
patent: 6798794 (2004-09-01), Miyahara
patent: 6813235 (2004-11-01), Furuhata et al.
patent: 6816450 (2004-11-01), Miura et al.
patent: 6912192 (2005-06-01), Shinoda et al.
patent: 7035174 (2006-04-01), Hashimoto et al.
patent: 7079474 (2006-07-01), Takahashi
patent: 2001/0003491 (2001-06-01), Kyoya
patent: 2002/0093893 (2002-07-01), Matsuda
patent: 1308324 (2001-08-01), None
patent: 1338735 (2002-03-01), None
patent: 61-184735 (1986-08-01), None
patent: 02-134735 (1990-05-01), None
patent: 2000-251314 (2000-09-01), None
patent: 2001-237501 (2001-08-01), None
patent: 2001-237501 (2001-08-01), None
patent: 2001-298238 (2001-10-01), None
patent: 2001-298238 (2001-10-01), None
patent: 2002-025103 (2002-01-01), None

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