Laser drive device, optical head, and optical information processor
文献类型：专利
| 作者 | ITO, TATSUO; KADOWAKI, SHIN-ICHI; KAMEI, TOMOTADA; YAMAMOTO, HIROAKI; KOMMA, YOSHIAKI |
| 发表日期 | 2003-11-04 |
| 专利号 | US6643303 |
| 著作权人 | MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Laser drive device, optical head, and optical information processor |
| 英文摘要 | To provide a laser driving apparatus which is inexpensive and has high reliability in spite of using a plurality of light sources, since a multi-wavelength light source is required for treating different kinds of optical disks such as CD, DVD or the like. In a two-wavelength LD apparatus including: a semiconductor laser 1a; a semiconductor laser 1b; and a photo detector 2, optical outputs of the semiconductor lasers 1a, 1b are controlled by APC circuits 6a, 6b on the basis of respective voltage values of variable resistors 4a, 4b connected in series to the photo detector 2. Alternatively, in the two-wavelength LD apparatus including: the semiconductor laser 1a; the semiconductor laser 1b; and the photo detector 2, the optical outputs of the semiconductor 1a, 1b are controlled by the APC circuits 6a, 6b on the basis of respective intermediate potentials of variable resistors 4a, 4b connected in parallel with the photo detector 2. |
| 公开日期 | 2003-11-04 |
| 申请日期 | 2002-01-02 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/33767]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
| 推荐引用方式 GB/T 7714 | ITO, TATSUO,KADOWAKI, SHIN-ICHI,KAMEI, TOMOTADA,et al. Laser drive device, optical head, and optical information processor. US6643303. 2003-11-04. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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