Xi'an Institute of Optics and Precision Mechanics,CAS
Laser driver | |
其他题名 | Laser driver |
SASAKI HIROSHI; WATABE ATSUMI; SATO YOSHIO; TSUBOI NOBUYOSHI; SHIMADA SATOSHI; KOYANAGI HIROAKI; MIYAMOTO NORIFUMI; MINEMURA HIROYUKI; NIHEI HIDEKI | |
1987-11-10 | |
专利权人 | HITACHI LTD |
公开日期 | 1987-11-10 |
授权国家 | 日本 |
专利类型 | 发明申请 |
摘要 | PURPOSE:To obtain a laser driver with highly accurate irradiating time by providing a switching function to an electronic circuit driving a laser to control the irradiated luminous quantity of the laser by a digital signal. CONSTITUTION:When digital setting signals DW1-DW3 setting, e.g., the luminous quantity of a laser are all at high level '1', a maximum output is obtained, and when all are at low level '0', the output is zero, and a 3-bit control command is issued where the least significant digit is DW1 and the most significant digit is DW3. A gate pulse G commanding the time to drive the laser gives a required pulse width and when the transmission line calls for a long range, it is also required to widen the pulse width TW required actually. A gate pulser 1 is used for modulation as the reduction or extension of the pulse width supplied from a gate pulse G and the output signal is a laser drive signal GTW. An electronic circuit section 2 generates a pulsive laser light PW depending on the condition supplied by the digital setting signals DW1-DW3 and the laser drive signal GTW. |
其他摘要 | 目的:通过向驱动激光器的电子电路提供开关功能,通过数字信号控制激光的照射发光量,获得具有高精度照射时间的激光驱动器。组成:当数字设置信号DW1-DW3设置,例如激光的发光量都处于高电平'1'时,获得最大输出,当所有都处于低电平'0'时,输出为零,并且发出3位控制命令,其中最低有效位为DW1,最高有效位为DW3。命令驱动激光器的时间的栅极脉冲G给出所需的脉冲宽度,并且当传输线需要长范围时,还需要加宽实际所需的脉冲宽度TW。栅极脉冲发生器1用于调制,作为从栅极脉冲G提供的脉冲宽度的减小或扩展,并且输出信号是激光器驱动信号GTW。电子电路部分2根据由数字设定信号DW1-DW3和激光驱动信号GTW提供的条件产生脉冲激光PW。 |
申请日期 | 1986-05-02 |
专利号 | JP1987257640A |
专利状态 | 失效 |
申请号 | JP1986100977 |
公开(公告)号 | JP1987257640A |
IPC 分类号 | G11B7/125 | H01S5/042 | 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/181661/68867 |
专题 | 半导体激光器专利数据库 |
作者单位 | HITACHI LTD |
推荐引用方式 GB/T 7714 | SASAKI HIROSHI,WATABE ATSUMI,SATO YOSHIO,et al. Laser driver. JP1987257640A[P]. 1987-11-10. |
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 | ||
JP1987257640A.PDF(461KB) | 专利 | 开放获取 | CC BY-NC-SA | 请求全文 |
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