Birefringence characteristic measuring method, optical recording medium and optical information recording/reproducing apparatus
文献类型：专利
| 作者 | KATAYAMA, RYUICHI |
| 发表日期 | 2009-06-02 |
| 专利号 | US7542401 |
| 著作权人 | NEC CORPORATION |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Birefringence characteristic measuring method, optical recording medium and optical information recording/reproducing apparatus |
| 英文摘要 | Four types of optical systems, a polarization optical system including an objective lens having a high numerical aperture, a polarization optical system including an objective lens having a low numerical aperture, a non-polarization optical system including an objective lens having a high numerical aperture and a non-polarization optical system including an objective lens having a low numerical aperture, are selectively used at the time of irradiating light from a semiconductor laser on a target disk for measurement, and the in-plane birefringence characteristic and perpendicular birefringence characteristic of the target disk are separately acquired based on the amounts of received light obtained by measuring reflected light from the target disk by a photosensor. |
| 公开日期 | 2009-06-02 |
| 申请日期 | 2007-05-17 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/32653]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | NEC CORPORATION |
| 推荐引用方式 GB/T 7714 | KATAYAMA, RYUICHI. Birefringence characteristic measuring method, optical recording medium and optical information recording/reproducing apparatus. US7542401. 2009-06-02. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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