Semiconductor laser light pickup device
文献类型：专利
| 作者 | KUME MASAHIRO; ITOU KUNIO; SHIMIZU YUUICHI; WADA MASARU |
| 发表日期 | 1986-01-06 |
| 专利号 | JP1986000941A |
| 著作权人 | MATSUSHITA DENKI SANGYO KK |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Semiconductor laser light pickup device |
| 英文摘要 | PURPOSE:To reduce remarkably noise component of a read signal by driving a semiconductor laser and a lens system in a body in the direction of optical axis, and setting the distance between the semiconductor laser and a disk to the optimum value. CONSTITUTION:It is possible to lower remarkably noise level by keeping the distance from the semiconductor laser to the disk (external length of resonator) constant at all times and by making the distance different from integer multiples of effective length of resonator. The optical system constituting a light pickup made up of the semiconductor laser 3 and a focusing lens 2 is made in a body and driven in the direction of optical axis by an actuator 5. Thus, the distance between the semiconductor laser 3 and disk 1 becomes fixed when a focusing servo is operated to follow the deflection of the disk It is enough for the purpose to adjust the distance to minimize the noise level. |
| 公开日期 | 1986-01-06 |
| 申请日期 | 1984-06-13 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/68724]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | MATSUSHITA DENKI SANGYO KK |
| 推荐引用方式 GB/T 7714 | KUME MASAHIRO,ITOU KUNIO,SHIMIZU YUUICHI,et al. Semiconductor laser light pickup device. JP1986000941A. 1986-01-06. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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