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文献类型：专利
| 作者 | AOYAMA SHIGERU; OGATA SHIRO; YAMASHITA MAKI |
| 发表日期 | 1992-09-24 |
| 专利号 | JP1992059790B2 |
| 著作权人 | OMRON TATEISI ELECTRONICS CO |
| 国家 | 日本 |
| 文献子类 | 授权发明 |
| 其他题名 | - |
| 英文摘要 | PURPOSE:To improve the directivity of a photosemiconductor device with relatively high intensity thereby to provide a high sensitivity with good condensing efficiency by providing a micro Fresnel lens in a window formed at a light passing position. CONSTITUTION:An element chip 4 is mounted on a heat sink 3, and the chip 4 is LD, LED, PD or APD, and covered with a cap 5. The cap 5 is secured to a mount 1 by normal method, such as can sealing, bonding or fusion-bonding. A window 5a is opened at the top (upper surface) of the cap 5, i.e., at a position of passing the emitted light of the chip 4 or the incident light to the chip 4, a micro Fresnel lens 6 made of transparent resin is mounted thereat, and the lens 6 is secured by bonding to the inner periphery of the window 6a at the peripheral edge. The finely formed surface formed with an uneven part of the lens 6 is so disposed as to direct the inside of the cap 5. |
| 公开日期 | 1992-09-24 |
| 申请日期 | 1986-08-04 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/70717]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | OMRON TATEISI ELECTRONICS CO |
| 推荐引用方式 GB/T 7714 | AOYAMA SHIGERU,OGATA SHIRO,YAMASHITA MAKI. -. JP1992059790B2. 1992-09-24. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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