-

OPT OpenIR > 半导体激光器专利数据库

	-
其他题名	-
	NAKATSUKA NOBUO; KITAJIMA HIROSHI; MORISHITA KOJI; YAMASHITA MAKI; YOSHIDA TOMYOSHI
	1992-10-28
专利权人	NIPPON DENSHI KOGYO SHINKO KYOKAI
公开日期	1992-10-28
授权国家	日本
专利类型	授权发明
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.
其他摘要	用途：通过将具有与光电转换元件的光电转换效率的温度系数相反的温度系数的电路元件安装到控制电路系统并且拒绝改变转换效率的效果来高精度地稳定投射功率。光电转换元件由于电路元件的温度变化。组成：当环境温度升高到高于T deg.C的值时，激光二极管11a的转换效率α降低，投射功率降低，并且来自光电二极管11b的输出电流iM也最小化。通过连接具有负温度系数的二极管13使二极管13的正向电压下降温度升高，并且使温度升高之后的电压VM'小于关于施加到（ - ）输入的电压的温度升高之前的电压VM。由于差分放大器12有效地进行控制操作以便通过电压增加DELTAI的电流，因此，驱动电流I被精确地控制到温度上升，并且激光二极管11a被高精度地稳定。
申请日期	1984-03-19
专利号	JP1992067352B2
专利状态	失效
申请号	JP1984054046
公开（公告）号	JP1992067352B2
IPC 分类号	G11B7/125 \| H01S5/042 \| H01S5/068 \| H01S5/0683
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	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[P]. 1992-10-28.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
JP1992067352B2.PDF（224KB）	专利		开放获取	CC BY-NC-SA	请求全文