Xi'an Institute of Optics and Precision Mechanics,CAS
- | |
其他题名 | - |
SHIMANE SADAICHI; TAKANO YUTAKA | |
1993-06-25 | |
专利权人 | KOPARU KK |
公开日期 | 1993-06-25 |
授权国家 | 日本 |
专利类型 | 授权发明 |
摘要 | PURPOSE:To quickly control the optical output with a simple constitution by detecting the repeat of minute change of the set value of a constant current due to an integrating circuit by a comparator and counting this detection by a counter. CONSTITUTION:A photo diode 3 detects the optical output of a laser diode 2, and a comparator 9 goes to the high level when an optical output level signal (e) exceeds a reference level Vr, and a counter 10 counts the rise of the comparator 9. The integral value of an integrating circuit 11 is reduced to reduce the output of the laser diode 2. When the counted value of the counter 10 reaches a prescribed value, an output signal (c) of a timer 8 goes to the low level, and a contact S1 is opened and a contact S2 is closed, and the integral value at this time is held in the integrating circuit 11, and the current of the laser diode 2 in a following printing period T1 is set. Thus, the constitution is simplified and the control is performed at a high speed, the variance of the optical output of the laser diode 2 is reflected on the counter speed of the counter 10 to perform the optical control uniformly. |
其他摘要 | 目的:通过由比较器检测由积分电路产生的恒定电流的设定值的微小变化的重复,并通过计数器对该检测进行计数,以简单的结构快速地控制光输出。构成:光电二极管3检测激光二极管2的光输出,当光输出电平信号(e)超过参考电平Vr时,比较器9变为高电平,计数器10对比较器的上升计数积分电路11的积分值减小以减小激光二极管2的输出。当计数器10的计数值达到规定值时,定时器8的输出信号(c)变为低电平,并且触点S1断开,触点S2闭合,并且此时的积分值保持在积分电路11中,并且设置在随后的打印时段T1中的激光二极管2的电流。因此,结构简化并且控制以高速进行,激光二极管2的光输出的变化反映在计数器10的计数器速度上,以均匀地执行光控制。 |
申请日期 | 1986-04-03 |
专利号 | JP1993042146B2 |
专利状态 | 失效 |
申请号 | JP1986075473 |
公开(公告)号 | JP1993042146B2 |
IPC 分类号 | H01S | H04N1/113 | H04N1/04 | G03G15/04 | H01S5/042 | H04N | B41J | B41J2/44 | G03G | H01S3/096 |
专利代理人 | - |
代理机构 | - |
文献类型 | 专利 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/68851 |
专题 | 半导体激光器专利数据库 |
作者单位 | KOPARU KK |
推荐引用方式 GB/T 7714 | SHIMANE SADAICHI,TAKANO YUTAKA. -. JP1993042146B2[P]. 1993-06-25. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
JP1993042146B2.PDF(206KB) | 专利 | 开放获取 | CC BY-NC-SA | 请求全文 |
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