Optical pickup
文献类型：专利
| 作者 | YAMAGUCHI EIJI |
| 发表日期 | 1986-08-25 |
| 专利号 | JP1986190731A |
| 著作权人 | FOSTER DENKI KK |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical pickup |
| 英文摘要 | PURPOSE:To obtain an optical pickup which has a large S/N and can perform the stable reproduction by projecting the direction vertical to the junction face of a semiconductor laser in the direction having a slope toward the tangent line of a disk track. CONSTITUTION:For an optical pickup of an optical disk, the direction vertical to the junction face of a semiconductor laser 1 is projected on a track in the direction where an angle theta has about 70 deg. slope in the tangent line direction of the track vertical to the radius direction B of a disk 5. For this purpose, a laser beam is made incident on a half prism 2 and a collimator lens 3. Then the parallel beams are focused on the disk 5 through an objective lens 4. The reflected beam given from the disk track is led to a photodiode 7 having a photodetecting surface through a lens 4, the lens 3 and the prism 2 and then a cylindrical lens 6. Thus a circular and equivalent focused image is formed on the photodetecting face of the diode 7. Thus a stable far field pattern FFP is obtained to ensure the excellent reproduction. |
| 公开日期 | 1986-08-25 |
| 申请日期 | 1985-02-18 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/68758]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | FOSTER DENKI KK |
| 推荐引用方式 GB/T 7714 | YAMAGUCHI EIJI. Optical pickup. JP1986190731A. 1986-08-25. |
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。