半導体レーザ駆動回路
文献类型：专利
| 作者 | 吉川 幸雄; 笹木 達雄; 高橋 保; 佐藤 伸一; 川合 弘晃 |
| 发表日期 | 1999-03-05 |
| 专利号 | JP2895144B2 |
| 著作权人 | 富士通株式会社 |
| 国家 | 日本 |
| 文献子类 | 授权发明 |
| 其他题名 | 半導体レーザ駆動回路 |
| 英文摘要 | PURPOSE:To enable a laser diode to be replaced before an automatic light quantity control mechanism stops operating normally by a method wherein a life detection circuit outputs a warning signal corresponding to the degree of deterioration of the laser diode by comparing the output voltage of a control circuit with a reference voltage. CONSTITUTION:A life detection circuit is composed of a first comparator 50 and a second comparator 49. A first reference voltage is applied to the negative input terminal of the first comparator 50, and an output voltage Vout is applied to the positive input terminal. When the output voltage exceeds the first reference voltage, a first warning signal is made to appear at the output terminal of the comparator 50. A second reference voltage is applied to the negative input terminal of the comparator 49, and the output voltage Vout is applied to the positive input terminal. Therefore, when the output voltage Vout exceeds the second reference voltage, a second warning signal appears at the output terminal of the comparator 49. A light emitting diode 56 is made to blink by a display signal which passes selectively through an AND gate 55 corresponding to the warning signals. |
| 公开日期 | 1999-05-24 |
| 申请日期 | 1990-02-07 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/69093]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | 富士通株式会社 |
| 推荐引用方式 GB/T 7714 | 吉川 幸雄,笹木 達雄,高橋 保,等. 半導体レーザ駆動回路. JP2895144B2. 1999-03-05. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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