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	TANAKA ATSUYUKI; KAIEDA SHOZO
	1993-02-08
著作权人	MINOLTA CAMERA KK
专利号	JP1993009950B2
国家	日本
文献子类	授权发明
其他题名	-
英文摘要	PURPOSE:To improve the output intensity of emitted laser light, in the laser driving device, by using an FET for current control. CONSTITUTION:A laser ON OFF control circuit 11 is connected to a switching FET Q, and the FET 20 is connected for the current control. The FET 20 and resistors RF and RD operate as a current limiter for a laser 2. A current control circuit 12 minutely adjusts the current flowing the FET 20, and controls the current flowing the laser 2. Said control circuit 12 has a switch 22. The switch 22 is connected to the side of a reference voltage until the emitted light output becomes a specified value, and makes a laser current IQ constant. When the output of the laser 2 has reached the specified value, the switch 22 is connected to the side of a sample and hold circuit 2 In this constitution, the current controlling FET 20 is controlled to the current value corresponding to the output of the laser 2, which is detected by a light output detecting element 9.
公开日期	1993-02-08
申请日期	1981-12-21
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/68645]
专题	半导体激光器专利数据库
作者单位	MINOLTA CAMERA KK
推荐引用方式 GB/T 7714	TANAKA ATSUYUKI,KAIEDA SHOZO. -. JP1993009950B2. 1993-02-08.

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