Multi-beam semiconductor laser unit and optical head device

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	Multi-beam semiconductor laser unit and optical head device
其他题名	Multi-beam semiconductor laser unit and optical head device
	SHINODA, MASAHISA, DIGITAL ATECH LIMITED; NAKAI, KENYA, DIGITAL ATECH LIMITED
	2003-12-03
专利权人	MITSUBISHI DENKI KABUSHIKI KAISHA
公开日期	2003-12-03
授权国家	欧洲专利局
专利类型	发明申请
摘要	A semiconductor laser unit (2) includes a plurality of semiconductor laser elements (4,5) arranged parallel with one another in a laser beam-emitting direction, and a base (T1) for positioning and fixing the plurality of semiconductor laser elements (4,5). The plurality of semiconductor laser elements (4,5) are arranged such that a laser beam (14) emitted from the semiconductor laser element (4) greatest in astigmatism, of the plurality of semiconductor laser elements (4,5), is coincident in its axis with a reference axis (S1) of the base (T1). In the case that the semiconductor laser unit (2) is arranged on an optical head device (1), the focusing characteristic on the plurality of laser beams (14,16) can be improved.
其他摘要	半导体激光器单元（2）包括沿激光束发射方向彼此平行布置的多个半导体激光器元件（4,5），以及用于定位和固定多个半导体激光器元件（4）的基座（T1），5）。多个半导体激光器元件（4,5）被布置成使得从多个半导体激光器元件（4,5）中的像散最大的半导体激光器元件（4）发射的激光束（14）重合。其轴线具有基座（T1）的参考轴（S1）。在半导体激光器单元（2）布置在光学头装置（1）上的情况下，可以改善多个激光束（14,16）上的聚焦特性。
主权项	A semiconductor laser unit comprising: 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; wherein 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.
申请日期	2002-09-03
专利号	EP1367575A2
专利状态	授权
申请号	EP2002256106
公开（公告）号	EP1367575A2
IPC 分类号	G11B7/08 \| G11B7/125 \| G11B7/22 \| H01S5/022 \| H01S5/40 \| G11B7/135
专利代理人	-
代理机构	BURKE, STEVEN DAVID
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/60870
专题	半导体激光器专利数据库
作者单位	MITSUBISHI DENKI KABUSHIKI KAISHA
推荐引用方式 GB/T 7714	SHINODA, MASAHISA, DIGITAL ATECH LIMITED,NAKAI, KENYA, DIGITAL ATECH LIMITED. Multi-beam semiconductor laser unit and optical head device. EP1367575A2[P]. 2003-12-03.

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