Optical head device and optical information device
文献类型：专利
| 作者 | SANO, KOUSEI; KOMMA, YOSHIAKI; WAKABAYASHI, KANJI; WADA, HIDENORI; MATSUZAKI, KEIICHI; TANAKA, TOSHIYASU |
| 发表日期 | 2007-08-09 |
| 专利号 | WO2007088809A1 |
| 著作权人 | MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
| 国家 | 世界知识产权组织 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical head device and optical information device |
| 英文摘要 | An optical head device having a light source for emitting light with different wavelengths, where the device is reduced in size by reducing the size of an optical system. The optical head device has a blue semiconductor laser (203) and an LDPD module (205) for DVD that function as light sources for emitting light having different wavelengths; objective lenses (201, 202) for collecting light from the light sources on an optical information recording medium; a light detector (204) and an LDPD module (205) for DVD that function as a detection section for detecting reflection light from the optical recording medium; and an optical base (120) where the light sources, the objective lenses, and the detection section are placed. The diameter of that ray of the light from the light sources which has a short wavelength is smaller than the diameter of that ray of the light from the light sources which has a long wavelength, where the diameter is a diameter measured at a passage face of the objective lens (201 or 202) to which each ray of the light from the light sources corresponds. |
| 公开日期 | 2007-08-09 |
| 申请日期 | 2007-01-29 |
| 状态 | 未确认 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/58004]  |
| 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 | SANO, KOUSEI,KOMMA, YOSHIAKI,WAKABAYASHI, KANJI,et al. Optical head device and optical information device. WO2007088809A1. 2007-08-09. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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