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	Optical pickup, optical information recording method, and optical disc apparatus
	SAITO, KIMIHIRO; OGI, SHIORI; FUJITA, GORO
	2011-12-13
著作权人	SONY CORPORATION
专利号	US8077582
国家	美国
文献子类	授权发明
其他题名	Optical pickup, optical information recording method, and optical disc apparatus
英文摘要	The recording accuracy of information on an optical disc is increased. An information optical system (150) of an optical disc apparatus (110) enables a semiconductor laser (3) to sequentially output specific peak light (LEP) and specific slope light (LES) as an information light beam (LM) and enables the correction lens (162) to change the divergence angle of the specific peak light (LEP) so that an absorption change area (RA) by the specific peak light (LEP) can be positioned at a far position in the recording layer (101). Thus, it is possible to form an energy concentration area (RE) by the specific slope light (LES) in the vicinity of a target position (QG), and the recording accuracy of information on the optical disc (100) can be increased.
公开日期	2011-12-13
申请日期	2009-10-01
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/32801]
专题	半导体激光器专利数据库
作者单位	SONY CORPORATION
推荐引用方式 GB/T 7714	SAITO, KIMIHIRO,OGI, SHIORI,FUJITA, GORO. Optical pickup, optical information recording method, and optical disc apparatus. US8077582. 2011-12-13.

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