Driver circuit for a camera autofocus laser diode with provision for fault protection
文献类型：专利
| 作者 | SCHROCK, ANTHONY WARD |
| 发表日期 | 1998-05-12 |
| 专利号 | US5752100 |
| 著作权人 | EASTMAN KODAK COMPANY |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Driver circuit for a camera autofocus laser diode with provision for fault protection |
| 英文摘要 | A laser diode current drive control circuit including a drive circuit supplying a modulated laser diode current drive signal, a laser diode drive current source having a switch responsive to the drive circuit for controlling flow of drive current to the laser diode. The control circuit is further provided with one or more fault sensing circuits coupled to the diode current switch and responsive to a fault condition in the operation of the diode that would cause the diode power output to exceed a predetermined maximum safety limit to open the switch thereby terminating the flow of diode drive current. A feedback sensing circuit operating synchronously with the current drive signal is effective to open the switch when a normal feedback control signal is lost. A drive signal sensing circuit is effective to open the switch when integrated power output of the laser diode exceeds a safety related limit value. The fault sensing circuits are integral with the laser drive circuit and operate independently of the separate controller circuits. |
| 公开日期 | 1998-05-12 |
| 申请日期 | 1997-02-28 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/35176]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | EASTMAN KODAK COMPANY |
| 推荐引用方式 GB/T 7714 | SCHROCK, ANTHONY WARD. Driver circuit for a camera autofocus laser diode with provision for fault protection. US5752100. 1998-05-12. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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