Optical head device and optical disc device
文献类型：专利
| 作者 | OMAKI MASAYUKI; NAKAI KENYA; TAKESHITA NOBUO |
| 发表日期 | 2013-07-11 |
| 专利号 | WO2013103057A1 |
| 著作权人 | MITSUBISHI ELECTRIC CORPORATION |
| 国家 | 世界知识产权组织 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical head device and optical disc device |
| 英文摘要 | This optical head device (11) is provided with: an optical element (36) for causing an optical beam emitted from a semiconductor laser (34) to be diffracted in transmission, generating a zero-degree-diffraction optical beam and a ±1-degree-diffraction optical beam; and an optical detection element (40) for receiving the zero-degree-diffraction optical beam reflected by an optical disc (2) and the +1-degree-diffraction optical beam. The optical detection element (40) comprises a primary light-receiving unit (400) for receiving the zero-degree-diffraction optical beam, and a first auxiliary light-receiving unit (401) disposed outward from the primary light-receiving unit (400). The first auxiliary light-receiving unit (401) is disposed in a position for detecting a portion of the outer side of the light-receiving spot of the +1-degree-diffraction optical beam, and performs photoelectric conversion of the portion to output an auxiliary detection signal. |
| 公开日期 | 2013-07-11 |
| 申请日期 | 2012-11-26 |
| 状态 | 未确认 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/58824]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | MITSUBISHI ELECTRIC CORPORATION |
| 推荐引用方式 GB/T 7714 | OMAKI MASAYUKI,NAKAI KENYA,TAKESHITA NOBUO. Optical head device and optical disc device. WO2013103057A1. 2013-07-11. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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