Semiconductor laser optical pickup device
文献类型：专利
| 作者 | KUME MASAHIRO; SUGINO TAKASHI; ITOU KUNIO; WADA MASARU |
| 发表日期 | 1985-10-07 |
| 专利号 | JP1985197952A |
| 著作权人 | MATSUSHITA DENKI SANGYO KK |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Semiconductor laser optical pickup device |
| 英文摘要 | PURPOSE:To reduce noise in a laser beam, and to prevent the drop of an S/N of an information signal by providing an optical means for feeding back other laser beam than a reflected laser beam from an information storage medium, into a semiconductor laser. CONSTITUTION:A reflecting surface 8 is provided on one side face of a beam splitter (BS)2. A laser beam emitted from a semiconductor laser 1 transmits through the BS2, passes through a collimator lens 3 and a focus lens 4, and it is condensed onto the surface of a disk 5. The reflected light goes back and is reflected by the BS2, made incident on a detector 7 through a focus lens 6, and fetched as an information signal. On the other hand, the incident light from the laser 1, which has been reflected by a half mirror in the BS2 is reflected by the reflecting surface 8, and a part of said light is fed back into the semiconductor laser In this way, a noise of the semiconductor laser 1 is reduced, and a drop of an S/N of the information signal is prevented. |
| 公开日期 | 1985-10-07 |
| 申请日期 | 1984-03-22 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59354]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | MATSUSHITA DENKI SANGYO KK |
| 推荐引用方式 GB/T 7714 | KUME MASAHIRO,SUGINO TAKASHI,ITOU KUNIO,et al. Semiconductor laser optical pickup device. JP1985197952A. 1985-10-07. |
入库方式： OAI收割
来源：西安光学精密机械研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。