Optical head including a semiconductor laser having a non-scatter area to diffuse incident light beams
文献类型：专利
| 作者 | NAKANISHI, HIDEYUKI; UENO, AKIRA; NAGAI, HIDEO; YOSHIKAWA, AKIO |
| 发表日期 | 1998-03-17 |
| 专利号 | US5729519 |
| 著作权人 | MATSUSHITA ELECTRONICS CORPORATION |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Optical head including a semiconductor laser having a non-scatter area to diffuse incident light beams |
| 英文摘要 | An optical head for optical recording and reproducing apparatuses is disclosed, which comprises a semiconductor laser, a mirror for reflecting a light beam emitted from the semiconductor laser, a diffraction grating for dividing the light beam into zero order, plus and sinus first-order beams, a holographic diffraction grating being arranged at an optical path of the beams divided by the diffraction grating, an objective lens for focusing the beams on a disk and causing the beams reflected from the disk to be incident on the holographic diffraction grating to diffract the beams, and a photodetector for detecting a tracking error signal by receiving the beams diffracted by the holographic diffraction grating. The semiconductor laser has a beam incident area which the beam reflected from the disk is incident. The beam incident area acts to deflect the incident beam. As a result, the optical head is able to obtain the stable tracking error signal. |
| 公开日期 | 1998-03-17 |
| 申请日期 | 1996-05-13 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/33532]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | MATSUSHITA ELECTRONICS CORPORATION |
| 推荐引用方式 GB/T 7714 | NAKANISHI, HIDEYUKI,UENO, AKIRA,NAGAI, HIDEO,et al. Optical head including a semiconductor laser having a non-scatter area to diffuse incident light beams. US5729519. 1998-03-17. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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