Pickup device for optical disk
文献类型：专利
| 作者 | ANDO SHINJI; HATTORI AKIRA |
| 发表日期 | 1988-05-31 |
| 专利号 | JP1988127441A |
| 著作权人 | MITSUBISHI ELECTRIC CORP |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Pickup device for optical disk |
| 英文摘要 | PURPOSE:To eliminate the need of diffraction grating and to simplify an assemble work and also to reduce the size of a device by composing a chip of semiconductor laser with a plural number of light emitting elements and their connecting resistors having different resistance values. CONSTITUTION:The chip 21 of the semiconductor laser 1 is composed of three sets of the light emitting element 22-24 and the resistors 25-27 having respective different resistance values, and the interval between light emitting points of each of the elements is set up to 10-300mu by emitting a laser beam 22a for pit detection and laser beams 23a and 24a for tracking guide. The laser beams are reflected at an optical disk 10 via a beam splitter 11 and formed an image at a detector 13 to reproduce a bit of recording information. Each of the elements is independently emitted so that no diffraction grading is necessary, thus the assemble work is simplified and according the size of the device is reduced. |
| 公开日期 | 1988-05-31 |
| 申请日期 | 1986-11-14 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59484]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | MITSUBISHI ELECTRIC CORP |
| 推荐引用方式 GB/T 7714 | ANDO SHINJI,HATTORI AKIRA. Pickup device for optical disk. JP1988127441A. 1988-05-31. |
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。