Light-emitting device
文献类型：专利
| 作者 | ISHII AKIRA; TAKAHASHI TAKEO; URITA KAZUCHIKA |
| 发表日期 | 1985-03-01 |
| 专利号 | JP1985039880A |
| 著作权人 | HITACHI SEISAKUSHO KK |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Light-emitting device |
| 英文摘要 | PURPOSE:To obtain a distinct beam spot having no blot when light-emitted beams are diaphragmed by forming an optical antireflection film to at least one part of the inner surface of a sealing body hermetically sealing a light-emitting element. CONSTITUTION:Surfaces, with which reflected beams 14 reflected by the surfaces of a glass plate 11, a stem 3 and a light-receiving element 8 collide, such as the inner wall of a cap 13, the main surface of the stem 3 and the side surface of a heat sink 4 and the like are coated with black antireflection films (optical absorption films) 16. Consequently, most of the reflected beams 14 of laser beams 7 are absorbed by the antireflection films 16, and reflected scattered beams (stray beams) repeating reflection and scattering disappear and only direct beams emitted from a laser chip 6 transmit from a transparent window 12. Accordingly, the beam spot of laser beams 7 diaphragmed by optical systems in various apparatus takes a distinct shape having no blot. |
| 公开日期 | 1985-03-01 |
| 申请日期 | 1983-08-12 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/74744]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | HITACHI SEISAKUSHO KK |
| 推荐引用方式 GB/T 7714 | ISHII AKIRA,TAKAHASHI TAKEO,URITA KAZUCHIKA. Light-emitting device. JP1985039880A. 1985-03-01. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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