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	Driving device for semiconductor laser
	HORIBATAKE KATSUSHI
	1986-09-26
著作权人	三田工業株式会社
专利号	JP1986217080A
国家	日本
文献子类	发明申请
其他题名	Driving device for semiconductor laser
英文摘要	PURPOSE:To obtain a laser output which is invariably stable against variation in ambient temperature by carrying out sampling operation in specific relation with data information such as an image signal, and making an error in sample value to generate and also correcting it freely. CONSTITUTION:A switch is turned on for one scanning period according to a horizontal synchronism detection signal HDS outputted by the processing circuit 7 of a laser printer 1 and a semiconductor laser 2 generates laser light, which is monitored through a photodetecting element 3. At the same time, while the signal HDS is at H, a photodetector 5 outputs a horizontal synchronous signal HS and a circuit 7 outputs a sampling signal A. A processing system 15, on the other hand, outputs a sampling signal B every time a specific number of H levels of a video signal VS of one scanning period from an interface 13 continue. By the signal A and B, an error is difficult to occur in an output control means 4 and even if the error occurs, a freely correctable laser output peak value is held with the signal B and compared with a reference value to control the laser 2. Therefore, the laser output is invariably stable even against environmental variation.
公开日期	1986-09-26
申请日期	1985-03-22
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/68773]
专题	半导体激光器专利数据库
作者单位	三田工業株式会社
推荐引用方式 GB/T 7714	HORIBATAKE KATSUSHI. Driving device for semiconductor laser. JP1986217080A. 1986-09-26.

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