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	WATANABE HIDEO
	1992-12-09
著作权人	FUJI PHOTO FILM CO LTD
专利号	JP1992077911B2
国家	日本
文献子类	授权发明
其他题名	-
英文摘要	PURPOSE:To simplify a circuit and to reduce its size and cost by driving each of plural semiconductor lasers by a constant current circuit and a constant output circuit one to one and making the quantity of light by controlling the quantities of light of some of the semiconductor lasers. CONSTITUTION:For example, semiconductor lasers 11, 12, and 13 are driven by the constant current circuit 54 while a driving current is set constant. The remaining semiconductor 14 is driven by the constant output circuit 55. The constant output circuit 55 receives a light quantity signal S4 outputted from a photodetector and controls the laser driving current so that the light quantity signal S4 has a specific value. Further, a control circuit 56 which varies the setting output of the semiconductor laser 14 is connected. On the other hand, a light quantity detector 52 which detects the quantity of the spot S of a composite beam 45 is arranged and its light quantity signal is compared with a reference signal which indicates the specific quantity of the composite laser beam and the laser driving current of the constant output circuit is so varied as to eliminate their deviation.
公开日期	1992-12-09
申请日期	1985-05-31
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/68793]
专题	半导体激光器专利数据库
作者单位	FUJI PHOTO FILM CO LTD
推荐引用方式 GB/T 7714	WATANABE HIDEO. -. JP1992077911B2. 1992-12-09.

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