Controller of light quantity
文献类型：专利
| 作者 | USHIO YUKIHIDE; KIMIZUKA JIYUNICHI; SETO KAORU |
| 发表日期 | 1984-08-22 |
| 专利号 | JP1984146456A |
| 著作权人 | CANON KK |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Controller of light quantity |
| 英文摘要 | PURPOSE:To attain the optimum control on a light quantity by using a means which switches in steps the emitted laser light quantity and then controls the light quantity continuously. CONSTITUTION:A laser generator 1 delivers the front and back beams and controls the beam radiation intensity by means of the intensity detecting signal of the back beam. A counter 16 starts counting with a timing signal TS, and a current switch 19 is turned on. Thus the count value of the counter 16 is set equal to the current value to be supplied to the generator The generator 1 emits the light when the current reaches the threshold value ITH. A comparator 14 compares the reference value corresponding to the drum sensitivity decided by a reference level circuit 13 with the output of a photodetecting circuit 1 Then the counter 16 stops its counting action when the output of the circuit 11 reaches the reference value and an FF15 is reset. The count value obtained at that time point is held. At the same time, the output of an OFF circuit 21 is also switched to VIDEO and the generator 1 blinks synchronously with the VIDEO. The generator 1 keeps a fixed level of light quantity until the FF15 is set by the signal TS which is supplied next. |
| 公开日期 | 1984-08-22 |
| 申请日期 | 1983-02-10 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59318]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | CANON KK |
| 推荐引用方式 GB/T 7714 | USHIO YUKIHIDE,KIMIZUKA JIYUNICHI,SETO KAORU. Controller of light quantity. JP1984146456A. 1984-08-22. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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