Laser optical system
文献类型：专利
| 作者 | SAKURAI SATORU |
| 发表日期 | 1990-07-05 |
| 专利号 | JP1990173769A |
| 著作权人 | KONICA CORP |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Laser optical system |
| 英文摘要 | PURPOSE:To prevent an excessive current from flowing when a relative position changes greatly by detecting the intensity of a beam after the beam passes through an aperture and controlling the driving current of an LD chip according to the detection signal. CONSTITUTION:A beam photosensor 7 detects a beam extracted by splitting the beam having passed through the aperture 5 and its detection signal is applied to a driving current control circuit 8, which decreases the intensity of light emission by reducing the driving current of a laser light emitting element when the beam intensity increases, but increases the intensity of light emission by increasing the driving current when the beam intensity decreases. The intensity of the beam having passed through the aperture is held constant. Consequently, a laser light emitting element is prevented from being overdriven owing to a large shift in relative position. |
| 公开日期 | 1990-07-05 |
| 申请日期 | 1988-12-27 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59607]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | KONICA CORP |
| 推荐引用方式 GB/T 7714 | SAKURAI SATORU. Laser optical system. JP1990173769A. 1990-07-05. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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