Optical pickup unit
文献类型：专利
| 作者 | MOGI NAOTO; YAMAMOTO MOTOYUKI; UNNO YOUICHI |
| 发表日期 | 1980-08-21 |
| 专利号 | JP1980108941A |
| 著作权人 | TOKYO SHIBAURA ELECTRIC CO |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical pickup unit |
| 英文摘要 | PURPOSE:To make the optical system of an optical pickup unit simple and small- size to make complicated and precise adjustment needless by using a semiconductor laser having a large-thickness light guide line consisting of muti-layer hetero junction and a narrow-width stripe electrode. CONSTITUTION:The laser light beam radiated from semiconductor laser 1 is condensed by optical system 2 consisting of lenses 2a and 2b and is focused on, for example, video disc 3. The laser light reflected by disc 3 is returned through the light path of optical system 2 and is incident onto semiconductor laser Disc 3 records information, for example, with arrangement of holes, arrangement of convexes and concaves, etc., and information is read by detecting the transmission light or the reflection light of the irradiated laser light. In this case, a little-anisotropy laser light beam can be obtained because semiconductor laser 1 consists of multi- layer hetero junction and the light guide path is 1mu or more thick and the stripe electrode is 5mu or less partially at least, so that the optical system can be simplified to obtain good reproducing. |
| 公开日期 | 1980-08-21 |
| 申请日期 | 1979-02-14 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59249]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | TOKYO SHIBAURA ELECTRIC CO |
| 推荐引用方式 GB/T 7714 | MOGI NAOTO,YAMAMOTO MOTOYUKI,UNNO YOUICHI. Optical pickup unit. JP1980108941A. 1980-08-21. |
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。