Optical recorded information reader
文献类型：专利
| 作者 | MATSUI YASUSHI; YAMAMOTO HIROAKI; UNO TOMOAKI; ODANI JIYUN; HORI YOSHIKAZU; SERIZAWA AKIMOTO |
| 发表日期 | 1988-09-26 |
| 专利号 | JP1988229638A |
| 著作权人 | MATSUSHITA ELECTRIC IND CO LTD |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical recorded information reader |
| 英文摘要 | PURPOSE:To obtain a device superior in wavelength characteristic, noise characteristic, or the like by providing a non-reflection coating on one resonator end face of a semiconductor laser and reflecting and diffracting the emitted light from this end face on the principal surface of an optical recording medium to feed back the light to the semiconductor laser and projecting the emitted light from the other resonator end face to a photodetector. CONSTITUTION:A coating 2 of low reflectivity is provided on one resonator end face of a semiconductor laser 1, and the light emitted from this coated resonator end face is reflected on the principal surface of an optical recording medium 3 and is fed back to the semiconductor laser again. The light emitted from the other resonator end face is projected to a photodetector 6 for reception. Consequently, the incident light to the photodetector 6 is changed in accordance with the presence/absence and the condition of feedback of the reflected light from a disk 3. Thus, the intensity of light is read by the photodetector arranged in the vicinity of the exit end and the operation level of the semiconductor laser is adjusted to improve S/N of the photodetector output. |
| 公开日期 | 1988-09-26 |
| 申请日期 | 1987-03-18 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/67797]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | MATSUSHITA ELECTRIC IND CO LTD |
| 推荐引用方式 GB/T 7714 | MATSUI YASUSHI,YAMAMOTO HIROAKI,UNO TOMOAKI,et al. Optical recorded information reader. JP1988229638A. 1988-09-26. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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