Optical Pickup Device And Optical Disc Apparatus
文献类型：专利
| 作者 | YAMAZAKI, KAZUYOSHI; KITADA, YASUO |
| 发表日期 | 2012-01-05 |
| 专利号 | US20120002532A1 |
| 著作权人 | HITACHI MEDIA ELECTRONICS CO., LTD. |
| 国家 | 美国 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical Pickup Device And Optical Disc Apparatus |
| 英文摘要 | An optical pickup device includes a semiconductor laser for emitting laser light, an objective lens for irradiating luminous flux emitted from the semiconductor laser to an optical disc, a branching element having a plurality of regions for branching luminous flux reflected from the optical disc to a plurality of fluxes, and a photodetector having a plurality of light receiving parts which receive luminous flux branched by said branching element. Luminous flux which enters at least two regions arrayed along a direction which is made substantially coincident with a tangential direction of the optical disc in regard to substantially a center of the branching element is arranged along a direction which is made substantially coincident with a radial direction of the optical disc on the photodetector. |
| 公开日期 | 2012-01-05 |
| 申请日期 | 2011-09-16 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/58716]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | HITACHI MEDIA ELECTRONICS CO., LTD. |
| 推荐引用方式 GB/T 7714 | YAMAZAKI, KAZUYOSHI,KITADA, YASUO. Optical Pickup Device And Optical Disc Apparatus. US20120002532A1. 2012-01-05. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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