Optical disc apparatus
文献类型：专利
| 作者 | SHIMANO, TAKESHI; MIYAMOTO, HARUKAZU |
| 发表日期 | 2011-03-22 |
| 专利号 | US7911889 |
| 著作权人 | HITACHI, LTD. |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Optical disc apparatus |
| 英文摘要 | An optical disc apparatus includes a laser diode, a first optical component which branches beams from the laser diode into a first beam and a second beam, an objective lens which focuses the first beam on an optical information recording medium, an actuator which drives the objective lens in an optical axis direction, a reference mirror provided in an optical path of the second beam, an optical path length varying unit which varies an optical path length of the second beam, a first photo detector, a second photo detector, a second optical component which branches beams obtained by combining the first beam which is reflected by the optical information recording medium and the second beam which is reflected by the reference mirror and which makes the branched beams incident on the first and second photo detectors, and a signal processing part. |
| 公开日期 | 2011-03-22 |
| 申请日期 | 2010-04-05 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/32838]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | HITACHI, LTD. |
| 推荐引用方式 GB/T 7714 | SHIMANO, TAKESHI,MIYAMOTO, HARUKAZU. Optical disc apparatus. US7911889. 2011-03-22. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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