Optical recording device
文献类型：专利
| 作者 | YAMAZAKI SHIGERU |
| 发表日期 | 1986-05-21 |
| 专利号 | JP1986102868A |
| 著作权人 | RICOH CO LTD |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical recording device |
| 英文摘要 | PURPOSE:To set an output of a laser at a required value by a simple construction by detecting an output of a laser, comparing a detecting result with a reference value, counting until the comparison result coincides during a setting of a power and controlling a feed current based on this counted value. CONSTITUTION:A comparator (CMP) 7 compares a detecting value of an output of a semiconductor laser 2 by a photodiode 5 with a reference value VR obtained by dividing a predetermined voltage V2 and outputs this comparison result to a microcomputer The microcomputer 1 counts up and counts down a counted value of an internal counter until the comparison value coincides. The counted value is D/A converted and after amplifying fed as a base current of a transistor 12. At this time, the largeness of the couunted value becomes a largeness of the base current and a drain current of an FET4 at that time becomes a feed current to the semiconductor laser 2. |
| 公开日期 | 1986-05-21 |
| 申请日期 | 1984-10-25 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/68740]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | RICOH CO LTD |
| 推荐引用方式 GB/T 7714 | YAMAZAKI SHIGERU. Optical recording device. JP1986102868A. 1986-05-21. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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