Automatic light output controller
文献类型：专利
| 作者 | WATAYA MASAFUMI; ISHII HIROAKI; UDAGAWA YUTAKA; SATO YUKIO |
| 发表日期 | 1987-06-10 |
| 专利号 | JP1987128274A |
| 著作权人 | CANON INC |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Automatic light output controller |
| 英文摘要 | PURPOSE:To make the light emission output of a light emitting element due to an environment variation constant and maintain, by determining a driving current to a prescribed light emission output according to the light output of the light emitting element, controlling so as to vary the driving current in the vicinity of the prescribed light emission output and adding the outputs of the current determining means and the current varying means and impressing to the light emitting element. CONSTITUTION:A drive signal 17 is raised, a laser diode LD is set to a state capable of emitting light, a microcomputer 11 decodes the light emission output PO from the output 16a of a power detector PD, and if the light emission output PO is larger than a standard light emission output PTYP, a digital computer 11a is lowered by one step and latched by a latch 2. This operation is repeated until the light emission output PO is lower than the standard light emission output PTYP. In this case, the driving current is determined by the current determining means to the prescribed light emission output of the light emitting element and the driving current is varied in the vicinity of the prescribed light emission output by the current varying means. |
| 公开日期 | 1987-06-10 |
| 申请日期 | 1985-11-28 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/68829]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | CANON INC |
| 推荐引用方式 GB/T 7714 | WATAYA MASAFUMI,ISHII HIROAKI,UDAGAWA YUTAKA,et al. Automatic light output controller. JP1987128274A. 1987-06-10. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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