Measuring method for light power
文献类型：专利
| 作者 | WATANABE SHIGEKI; ASANO SABUROU; MIURA SHOICHI |
| 发表日期 | 1987-09-24 |
| 专利号 | JP1987217126A |
| 著作权人 | FUJITSU LTD |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Measuring method for light power |
| 英文摘要 | PURPOSE:To accurately measure light power over a wide angle range by moving an extremely small photodetector along an arc having its center at a light emission source, measuring the intensity of the light power at each angle, and summing up the products of the intensity of the light power and the area of the sweeping of the photodetector. CONSTITUTION:The output current of the photodetector 4 at a projection angle thetan is converted by a current/power converter 5 into light intensity P1(thetan) and then a microcomputer provided in a multiplier 6 computes and then the area dsn of a hatched part by the light intensity. The product of the P1(thetan) and dsn is inputted from the output terminal O1 of the multiplier 6 to an adder 7. On the other hand, an indication signal for moving the photodetector 4 to the position where the projection angle is DELTAtheta larger is outputted from the output terminal O2 of the multiplier 6 and inputted to a photodetector moving device 8 to move the photodetector 4. The results of this processing as to n=1, 2, 3... are summed up to obtain the total light output P. |
| 公开日期 | 1987-09-24 |
| 申请日期 | 1986-03-19 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/62603]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | FUJITSU LTD |
| 推荐引用方式 GB/T 7714 | WATANABE SHIGEKI,ASANO SABUROU,MIURA SHOICHI. Measuring method for light power. JP1987217126A. 1987-09-24. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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