Optical pickup element
文献类型：专利
| 作者 | YOSHITOSHI, YOU; MATSUMOTO, YOSHIYUKI; KUME, HIDEHIRO; MITSUMORI, KOJI; YAMAMOTO, ETSUFUMI; OINOUE, HIROSHI |
| 发表日期 | 1993-06-09 |
| 专利号 | EP0545905A2 |
| 著作权人 | SONY CORPORATION |
| 国家 | 欧洲专利局 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical pickup element |
| 英文摘要 | An optical pickup device having a semiconductor laser element (5) mounted on a substrate (2), a photo detector (3) formed on the substrate to receive a laser beam emitted from the semi-conductor laser element (2) and an optical element (6) mounted on the substrate to cover the photo detector to branch the direction of optical path of the laser beam. The optical element (6) is adapted to reduce the amount of unwanted stray light from the laser (5) reaching the photo detector (3). The rear face (6f) of the element (6) is coated with light absorption material (14) to substantially prevent said incident light from being reflected into the photo detector (3). The light absorption material (14) is chosen to absorb light of the wavelength(s) emitted by the laser element. The material (14) preferably has the same refractive index as the element (6). |
| 公开日期 | 1993-06-09 |
| 申请日期 | 1988-07-25 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/87698]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | SONY CORPORATION |
| 推荐引用方式 GB/T 7714 | YOSHITOSHI, YOU,MATSUMOTO, YOSHIYUKI,KUME, HIDEHIRO,et al. Optical pickup element. EP0545905A2. 1993-06-09. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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