Optical type information reproducing device
文献类型：专利
| 作者 | KONDOU MITSUSHIGE |
| 发表日期 | 1982-09-24 |
| 专利号 | JP1982154658A |
| 著作权人 | MITSUBISHI DENKI KK |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical type information reproducing device |
| 英文摘要 | PURPOSE:To omit a half mirror in the entitled device by fetching a noise correcting signal from the light flux reflected when irradiated light flux is penetrated into a polarization beam splitter or the one penetrated when the irradiated light flux is reflected by the polarization beam splitter. CONSTITUTION:A part of the light radiated from a semiconductor laser 1 is condensed by a light spot 16 to read out data on a disk 17 and the reflected light flux is converted into an electric signal by a photo detector 2 Out of the light flux 4 incident upon a polarization beam splitter 11, the light flux 23 penetrated into the splitter is received by a photo detector 8 and amplified by an amplifier and its output 10 modulates the semiconductor laser A closed loop system consisting of the semiconductor 1, a collimater lens 3, the polarization beam splitter 11, the photo detector 8, and the amplifier 9 is so constituted as to be a negative feedback system, reducing the noises of the semiconductor laser. |
| 公开日期 | 1982-09-24 |
| 申请日期 | 1981-03-20 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59271]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | MITSUBISHI DENKI KK |
| 推荐引用方式 GB/T 7714 | KONDOU MITSUSHIGE. Optical type information reproducing device. JP1982154658A. 1982-09-24. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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