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	Device for driving semiconductor laser
	SATO YASUYUKI; SHINODA MASAHISA; KARAKI MORIHIRO
	1991-05-30
著作权人	MITSUBISHI ELECTRIC CORP
专利号	JP1991127888A
国家	日本
文献子类	发明申请
其他题名	Device for driving semiconductor laser
英文摘要	PURPOSE:To dispense with adjustment of the positioning of a semiconductor laser array to a photodetector by a method wherein the photodetector, which receives en bloc a plurality of light beams from a plurality of semiconductor laser light sources and is divided into parts whose number is identical with the number of the light beams, is provided, the output signal of the photodetector is operated and the outputs of the light beams are individually monitored. CONSTITUTION:A photodetector 22, which receives en bloc a plurality of emitted light beams 3a to 3c from a plurality of semiconductor laser light sources LDa to LDc and consists of light-receiving elements whose number is identical with the number of the laser light sources LDa to LDc, is provided. The optical outputs of the laser light sources LDa to LDc are operated by a detection signal from the photodetector 22 and are individually monitored and at the same time, the laser light sources LDa to LDc are made to light on the basis of the output of an arithmetic processing circuit 25. Thereby, adjustment of the positioning of a plurality of the semiconductor laser light sources to the photodetector 22 becomes unnecessary.
公开日期	1991-05-30
申请日期	1989-10-13
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/69071]
专题	半导体激光器专利数据库
作者单位	MITSUBISHI ELECTRIC CORP
推荐引用方式 GB/T 7714	SATO YASUYUKI,SHINODA MASAHISA,KARAKI MORIHIRO. Device for driving semiconductor laser. JP1991127888A. 1991-05-30.

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