半導体レ-ザ駆動回路
文献类型：专利
| 作者 | 小石 健二; 末次 俊夫 |
| 发表日期 | 1996-09-19 |
| 专利号 | JP2563250B2 |
| 著作权人 | 松下電器産業株式会社 |
| 国家 | 日本 |
| 文献子类 | 授权发明 |
| 其他题名 | 半導体レ-ザ駆動回路 |
| 英文摘要 | PURPOSE:To prevent the unnecessary light emission when the electric power source is on or off by detecting the electric power source voltage level of the light emitting control means, and providing the means to control the light emitting control to the condition in which the semiconductor laser does not emit the light, when the electric power source voltage of a certain scope is detected. CONSTITUTION:For a comparator 16, by using the comparator of the type which can execute the low voltage action, even when the electric power source voltage is supplied by a Vcc1, the action can be executed from the level shown in 26, transistors 17 and 18 are conducted from the level shown in 26 by the Vcc1 and are not conducted by the point of 27. At such a time, for the voltage of a light emitting on off signal 7 and a recording gate signal 5 which are the output of a light emitting control circuit 9, as shown in a waveform (c), the unsteady state of the logical level at the time of the rise of the electric power source is completed when the Vcc1 arrives at an action voltage 26 of the comparator. Thus, a threshold level 13, in which analog switches 4 and 6 of the semiconductor laser driving circuit are operated, is not exceeded, and as if a Vcc2 rises sufficiently early, the semiconductor laser will not emit the light uselessly at the time of the rise of the electric power source of the Vcc |
| 公开日期 | 1996-12-11 |
| 申请日期 | 1985-06-17 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/68796]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | 松下電器産業株式会社 |
| 推荐引用方式 GB/T 7714 | 小石 健二,末次 俊夫. 半導体レ-ザ駆動回路. JP2563250B2. 1996-09-19. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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