Xi'an Institute of Optics and Precision Mechanics,CAS
Laser diode driving circuit | |
其他题名 | Laser diode driving circuit |
HONGOU JINICHI; ITOU SHIYOUICHI | |
1984-01-31 | |
专利权人 | HITACHI SEISAKUSHO KK |
公开日期 | 1984-01-31 |
授权国家 | 日本 |
专利类型 | 发明申请 |
摘要 | PURPOSE:To improve control precision by using a switching and a bias electric currents as driving current and performing light output control by the bias current. CONSTITUTION:Current sources 10A and 10B are current sources for the switching current and bias current. The output of a laser diode (LD) 3 is detected by a photodiode 4 and supplied through an amplifier 14 to a comparator 13, where it is compared with a reference voltage. Then, the output of the comparator 13 is supplied to a U/D counter 12, which counts up or down. Its counted value is converted by a D/A converter 11 into an analog value, which controls the capacity of the current source 10B to vary the bias current, performing constant-output control over the LD 3. Thus, the object under the constant-output control is only the bias current and reduced in range, so the control precision is improved. |
其他摘要 | 用途:通过使用开关和偏置电流作为驱动电流并通过偏置电流执行光输出控制来提高控制精度。组成:电流源10A和10B是开关电流和偏置电流的电流源。激光二极管(LD)3的输出由光电二极管4检测并通过放大器14提供给比较器13,在那里将其与参考电压进行比较。然后,比较器13的输出被提供给U / D计数器12,U / D计数器12向上或向下计数。其计数值由D / A转换器11转换成模拟值,该模拟值控制电流源10B的容量以改变偏置电流,对LD 3执行恒定输出控制。因此,在恒定下的对象 - 输出控制只是偏置电流,范围缩小,因此提高了控制精度。 |
申请日期 | 1982-07-23 |
专利号 | JP1984018964A |
专利状态 | 失效 |
申请号 | JP1982127719 |
公开(公告)号 | JP1984018964A |
IPC 分类号 | H01S5/068 | B41J2/44 | G03G15/04 | G03G15/043 | G03G15/22 | G03B27/72 | 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/181661/68665 |
专题 | 半导体激光器专利数据库 |
作者单位 | HITACHI SEISAKUSHO KK |
推荐引用方式 GB/T 7714 | HONGOU JINICHI,ITOU SHIYOUICHI. Laser diode driving circuit. JP1984018964A[P]. 1984-01-31. |
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 | ||
JP1984018964A.PDF(161KB) | 专利 | 开放获取 | CC BY-NC-SA | 请求全文 |
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