| Semiconductor laser driving circuit | |
| INUYAMA SATOHIKO; KUSANO AKIHISA; SATO KAORU; KIMIZUKA JUNICHI; SOYA TAKASHI | |
| 1988-09-01 | |
| 著作权人 | CANON INC |
| 专利号 | JP1988210972A |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Semiconductor laser driving circuit |
| 英文摘要 | PURPOSE:To form an inexpensive laser driving circuit having high accuracy by lowering the power source voltage of a gate circuit until the output of an amplifier follows up said voltage. CONSTITUTION:A circuit 507 for regulating photodetector output is made into such configuration consisting of a 2kOMEGA variable resistor VR2 and fixed resistors of R16:1kOMEGA, R17:2kOMEGA, and R30:100OMEGA. A jumper pattern exists in the resistors R16, R17 and cut points CP1-CP3 are provided. Nothing is done up to 100-2,100OMEGA series resistance RPD and CP1 is cut before 110-3,100OMEGA. The circuit is so constituted as to cut CP2 before 2,100-4,100OMEGA and to cut CP3 before 3,100-5,100OMEGA. The accuracy of the regulation is enhanced and such inexpensive configuration consisting of one rotary variable volume control and fixed resistors is adopted. The regulation with the high accuracy and the reduction of the cost are thereby permitted. |
| 公开日期 | 1988-09-01 |
| 申请日期 | 1987-02-27 |
| 状态 | 失效 |
| 内容类型 | 专利 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/68924]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | CANON INC |
| 推荐引用方式 GB/T 7714 | INUYAMA SATOHIKO,KUSANO AKIHISA,SATO KAORU,et al. Semiconductor laser driving circuit. JP1988210972A. 1988-09-01. |
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