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	Semiconductor laser driving device, semiconductor laser driving method, and image forming apparatus using semiconductor laser driving device
	KYOUGOKU, HIROAKI; IKEDA, JUNICHI
	2005-08-17
著作权人	RICOH COMPANY, LTD.
专利号	EP1563577A1
国家	欧洲专利局
文献子类	发明申请
其他题名	Semiconductor laser driving device, semiconductor laser driving method, and image forming apparatus using semiconductor laser driving device
英文摘要	ABSTRACT In a semiconductor laser driving device and method, a first current below an oscillation threshold current of a semiconductor laser is outputted to the laser invariably. A second current needed for light emission of the laser responsive to an input signal is outputted to the laser. A third current for controlling the laser such that a detected amount of emission light from the laser accords with a given value is outputted to the laser. A predetermined auxiliary current is outputted to the laser. An initialization operation is performed to detect luminescence characteristics of the laser, and a signal indicating a value of the second current derived from the detected luminescence characteristics is outputted. The third current is controlled so that an amount of light outputted by the laser receiving a sum of the first, second, third and auxiliary currents, accords with a predetermined amount.
公开日期	2005-08-17
申请日期	2003-10-29
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/61029]
专题	半导体激光器专利数据库
作者单位	RICOH COMPANY, LTD.
推荐引用方式 GB/T 7714	KYOUGOKU, HIROAKI,IKEDA, JUNICHI. Semiconductor laser driving device, semiconductor laser driving method, and image forming apparatus using semiconductor laser driving device. EP1563577A1. 2005-08-17.

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