QQ客服 官方微博 反馈留言

	Laser drive device, optical head, and optical information processor
	ITO, TATSUO; KADOWAKI, SHIN-ICHI; KAMEI, TOMOTADA; YAMAMOTO, HIROAKI; KOMMA, YOSHIAKI
	2003-11-04
著作权人	MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
专利号	US6643303
国家	美国
文献子类	授权发明
其他题名	Laser drive device, optical head, and optical information processor
英文摘要	To provide a laser driving apparatus which is inexpensive and has high reliability in spite of using a plurality of light sources, since a multi-wavelength light source is required for treating different kinds of optical disks such as CD, DVD or the like. In a two-wavelength LD apparatus including: a semiconductor laser 1a; a semiconductor laser 1b; and a photo detector 2, optical outputs of the semiconductor lasers 1a, 1b are controlled by APC circuits 6a, 6b on the basis of respective voltage values of variable resistors 4a, 4b connected in series to the photo detector 2. Alternatively, in the two-wavelength LD apparatus including: the semiconductor laser 1a; the semiconductor laser 1b; and the photo detector 2, the optical outputs of the semiconductor 1a, 1b are controlled by the APC circuits 6a, 6b on the basis of respective intermediate potentials of variable resistors 4a, 4b connected in parallel with the photo detector 2.
公开日期	2003-11-04
申请日期	2002-01-02
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/33767]
专题	半导体激光器专利数据库
作者单位	MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
推荐引用方式 GB/T 7714	ITO, TATSUO,KADOWAKI, SHIN-ICHI,KAMEI, TOMOTADA,et al. Laser drive device, optical head, and optical information processor. US6643303. 2003-11-04.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。