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	Laser driver
	TAKIGAWA MASAMI
	1991-10-01
著作权人	MATSUSHITA ELECTRIC IND CO LTD
专利号	JP1991222125A
国家	日本
文献子类	发明申请
其他题名	Laser driver
英文摘要	PURPOSE:To reduce the burden of a laser diode by providing the laser driving current input parts of an automatic light emitting power control circuit and an instantaneous writing light generation circuit respectively with analog switches, and providing a Schmitt trigger circuit between the input terminal of each analog switch and an integration circuit circuit connected to a logic power supply. CONSTITUTION:At the time of turning on power supply, the automatic light emitting power control circuit 4 is operated before the instantaneous writing light generation circuit 5, and at the time of turning off the power supply, the circuit 5 is stopped before the circuit 4 stops. Thus, the burden of the laser diode 1 due to turning on and off the power supply is reduced. For this purpose, switches to close logic input terminals 61, 71 at the high level are used for the analog switches 6, 7, and the positions of the inputs of the Schmitt trigger circuits 8, 9 are selected so as to be at the positions from the logic power supply through the integrator 10, since there is time lag by the integrator 10 in the inputs of the circuits 8, 9, the switches 6, 7 are turned into an open state. Namely, by making the opening and closing time of the switches 6, 7 different from each other, the extreme variation of the light emitting power of the diode 1 is removed.
公开日期	1991-10-01
申请日期	1990-01-29
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/69088]
专题	半导体激光器专利数据库
作者单位	MATSUSHITA ELECTRIC IND CO LTD
推荐引用方式 GB/T 7714	TAKIGAWA MASAMI. Laser driver. JP1991222125A. 1991-10-01.

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