Semiconductor laser unit
文献类型：专利
| 作者 | IMAMURA TOMOATSU; SHIMADA KAZUYUKI; SENMA TOSHITAKA |
| 发表日期 | 1989-05-18 |
| 专利号 | JP1989125994A |
| 著作权人 | 株式会社リコー |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Semiconductor laser unit |
| 英文摘要 | PURPOSE:To eliminate power adjustment at the time of replacement of a semiconductor laser unit by a method wherein a monitor output amplifier whose gain is adjustable and a reference voltage generating circuit are provided in the semiconductor laser unit. CONSTITUTION:An monitor output amplifier 8 and a reference voltage generating circuit 9 are provided on the printed circuit board 6 of a semiconductor laser unit 7. The amplifier 8 is composed of an operational amplifier 81 and a variable resistor 82 for gain adjustment. The reference voltage generating circuit 9 is composed of a resistor 91 and a Zener diode 92 which are connected in series between a source terminal to which a source voltage VCC is applied and a ground and a Zener voltage is outputted as an internal reference voltage Vr. The Zener voltage is so selected beforehand as to have the output voltage Vm of the amplifier 8 and to have that voltage Vm as the internal reference voltage Vr. If the unit 7 is adjusted beforehand like this, the replacement operation of the unit can be performed at site without using a power meter 13. |
| 公开日期 | 1989-05-18 |
| 申请日期 | 1987-11-11 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/68953]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | 株式会社リコー |
| 推荐引用方式 GB/T 7714 | IMAMURA TOMOATSU,SHIMADA KAZUYUKI,SENMA TOSHITAKA. Semiconductor laser unit. JP1989125994A. 1989-05-18. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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