半導体レ-ザ出力制御装置
文献类型：专利
| 作者 | 竹山 佳伸; 島田 和之; 杉村 圭一 |
| 发表日期 | 1996-05-17 |
| 专利号 | JP2521674B2 |
| 著作权人 | 株式会社リコー |
| 国家 | 日本 |
| 文献子类 | 授权发明 |
| 其他题名 | 半導体レ-ザ出力制御装置 |
| 英文摘要 | PURPOSE:To restrain the output change of a semiconductor laser, prevent the image density irregularity of a laser printer, etc. and reproduce exactly halftone, by supplying a correction current having a specified time constant to a semiconductor laser at the time of ON period and/or OFF period of the semiconductor laser, and correcting the output change of the semiconductor laser. CONSTITUTION:A photo-diode 2 generates a current proportional to the output of a semiconductor laser 1, which is converted to a voltage by an amplifier 3 and compared with a reference voltage Vref by a comparator 4. The output voltage of the comparator 4 controls the count mode of an up-down counter 5. A modulating signal containing a video signal is input with a specified time delay to a driving circuit 10 for semiconductor laser. By this modulation signal, the semiconductor laser 1 is modulated under ON-OFF operation, and a current corresponding with the output signal of an adder 9 is supplied to the semiconductor laser When the output voltage of an amplifier 11 becomes smaller than the reference voltage Vref, an edge detection circuit 12 dects the state, resets an FF6, and returns the up-down counter 5 to the disable state. Consequently, the magnitude of a driving current for the semiconductor laser 1 is maintained. |
| 公开日期 | 1996-08-07 |
| 申请日期 | 1986-09-30 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/33274]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | 株式会社リコー |
| 推荐引用方式 GB/T 7714 | 竹山 佳伸,島田 和之,杉村 圭一. 半導体レ-ザ出力制御装置. JP2521674B2. 1996-05-17. |
入库方式： OAI收割
来源：西安光学精密机械研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。