Optical pickup apparatus with astigmatism correcting collimating lens
文献类型：专利
| 作者 | HOTTA, TOHRU; KAWASAKI, RYOICHI |
| 发表日期 | 2013 |
| 专利号 | US8345529 |
| 著作权人 | SANYO ELECTRIC CO., LTD. |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Optical pickup apparatus with astigmatism correcting collimating lens |
| 英文摘要 | An optical-pickup apparatus includes: a laser diode having a first-laser element, which emits a first-laser beam, and a second-laser element, which emits a second-laser beam having a wavelength shorter than a wavelength of the first-laser beam, arranged in the same package; an objective lens to condense the first- and second-laser beams emitted from the laser diode to signal-recording layers of first- and second-optical discs, respectively, the second-optical disc being of a standard different from a standard of the first-optical disc; and a collimating lens arranged in an optical path between the laser diode and the objective lens, the collimating lens configured to change the first- and second-laser beams from divergent light to parallel light, the collimating lens being inclined with respect to optical axes of the first- and second-laser beams so that astigmatism in the first- and second-laser beams is corrected. |
| 公开日期 | 2013 |
| 申请日期 | 2011-01-25 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/32905]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | SANYO ELECTRIC CO., LTD. |
| 推荐引用方式 GB/T 7714 | HOTTA, TOHRU,KAWASAKI, RYOICHI. Optical pickup apparatus with astigmatism correcting collimating lens. US8345529. 2013-01-01. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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