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	NAKATSUKA NOBUO; KITAJIMA HIROSHI; MORISHITA KOJI; YAMASHITA MAKI; YOSHIDA TOMYOSHI
	1992-10-28
著作权人	NIPPON DENSHI KOGYO SHINKO KYOKAI
专利号	JP1992067352B2
国家	日本
文献子类	授权发明
其他题名	-
英文摘要	PURPOSE:To stabilize projecting power with high accuracy by fitting a circuit element having a temperature coefficient reverse to the temperature coefficient of the photoelectric conversion efficiency of a photoelectric conversion element to a control circuit system and denying the effect of the alteration of the conversion efficiency of the photoelectric conversion element due to a temperature change by the circuit element. CONSTITUTION:When an ambient temperature is elevated to a value higher than T deg.C, the conversion efficiency alpha of a laser diode 11a reduces, projecting power lowers, and output currents iM from a photodiode 11b are also minimized. The forward voltage of a diode 13 drops by a temperature rise by connecting the diode 13 having a negative temperature coefficient, and voltage VM' after the temperature rise is made smaller than voltage VM before the temperature rise regarding voltage applied to a (-) input terminal for a differential amplifier 12. Since the differential amplifier 12 effectively conducts control operation so as to increase currents of DELTAI by voltage, VM, driving currents I are controlled precisely to the temperature rise, and the laser diode 11a is stabilized with high accuracy.
公开日期	1992-10-28
申请日期	1984-03-19
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/68713]
专题	半导体激光器专利数据库
作者单位	NIPPON DENSHI KOGYO SHINKO KYOKAI
推荐引用方式 GB/T 7714	NAKATSUKA NOBUO,KITAJIMA HIROSHI,MORISHITA KOJI,et al. -. JP1992067352B2. 1992-10-28.

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