Semiconductor laser device
文献类型：专利
| 作者 | MORI KAZUSHI |
| 发表日期 | 1991-03-27 |
| 专利号 | JP1991072688A |
| 著作权人 | SANYO ELECTRIC CO LTD |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Semiconductor laser device |
| 英文摘要 | PURPOSE:To realize an optical disk pickup excellent in vibration resistance characteristics wherein a simple optical system and signal processing system are equipped, and each error signal of superior S/N ratio is obtained, by a method wherein two light emitting points are arranged along the optical axis of laser light, so as to be mutually shifted in the opposite direction. CONSTITUTION:Laser chips 1a, 1c which radiate respectively two beams of laser light 4a, 4b at both ends are fixed on a submount for a heat sink use, together with a laser chip 1b, in the manner in which the optical axes are set in the same direction. The light emitting points 6a and 6c of the chips 1a and 1c are arranged so as to be shifted reversely by a same distance in the direction of the optical axis of laser beam from a reference, i.e., the light emitting point 6b of the laser chip 1b. Laser light 2 converged on a recording signal track is used for reading an HF signal; laser lights 3a, 3b are used for reading a tracking error signal; the laser lights 4a, 4b whose positions of light emitting points are shifted from those of the above three laser lights are used for reading a focus error signal. |
| 公开日期 | 1991-03-27 |
| 申请日期 | 1989-09-26 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/70947]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | SANYO ELECTRIC CO LTD |
| 推荐引用方式 GB/T 7714 | MORI KAZUSHI. Semiconductor laser device. JP1991072688A. 1991-03-27. |
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。