Xi'an Institute of Optics and Precision Mechanics,CAS
Semiconductor laser drive circuit | |
其他题名 | Semiconductor laser drive circuit |
NAKANE KAZUHIKO; UMEYAMA TAKEHIKO | |
1990-03-08 | |
专利权人 | MITSUBISHI ELECTRIC CORP |
公开日期 | 1990-03-08 |
授权国家 | 日本 |
专利类型 | 发明申请 |
摘要 | PURPOSE:To obtain a drive circuit capable of being driven at three or more kinds of output levels by making this device have specific light detection circuit, driving current controlling circuit, and driving current supply circuit. CONSTITUTION:A circuit which drives a semiconductor laser at n (n>=3) kinds of output levels is made to comprise light detection circuits 3 to 5 for detecting the output power of the semiconductor laser 1, driving current controlling circuits 6, 7, 2 for controlling the driving current of the semiconductor laser 1 based on the output from the light detection circuit, and driving current supply circuits A2 to An for supplying some of the driving current in the case where the semiconductor laser 1 is driven at a second to n-th output level. The driving current controlling circuits 6, 7, 2 have a circuit 6 for holding the control signal of the driving current in the case where it drives at a second to n-th output level, and the driving current supply circuits A2 to An have a switch circuit 8 for switching the supply current on or off. |
其他摘要 | 目的:通过使该装置具有特定的光检测电路,驱动电流控制电路和驱动电流供给电路,获得能够以三种或更多种输出电平驱动的驱动电路。组成:一个以n(n> = 3)种输出电平驱动半导体激光器的电路,包括用于检测半导体激光器1的输出功率的光检测电路3至5,驱动电流控制电路6,7,用于控制半导体激光器1的驱动电流的图2中所示的半导体激光器1的驱动电流基于来自光检测电路的输出,以及用于在半导体激光器1被驱动的情况下提供一些驱动电流的驱动电流供给电路A2至An至第n个输出电平。驱动电流控制电路6,7,2具有电路6,用于在其以第二至第n输出电平驱动的情况下保持驱动电流的控制信号,并且驱动电流供给电路A2至An具有开关电路8用于接通或断开电源电流。 |
申请日期 | 1988-09-02 |
专利号 | JP1990068973A |
专利状态 | 失效 |
申请号 | JP1988221170 |
公开(公告)号 | JP1990068973A |
IPC 分类号 | G11B7/125 | H01S5/042 | H01S5/0683 | H01S3/096 |
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/181661/69011 |
专题 | 半导体激光器专利数据库 |
作者单位 | MITSUBISHI ELECTRIC CORP |
推荐引用方式 GB/T 7714 | NAKANE KAZUHIKO,UMEYAMA TAKEHIKO. Semiconductor laser drive circuit. JP1990068973A[P]. 1990-03-08. |
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 | ||
JP1990068973A.PDF(209KB) | 专利 | 开放获取 | CC BY-NC-SA | 请求全文 |
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