Drive apparatus that drives light emitting device | |
ENDO, WATARU; SHIOMICHI, HIROTAKA | |
2019-03-05 | |
著作权人 | CANON KABUSHIKI KAISHA |
专利号 | US10220636 |
国家 | 美国 |
文献子类 | 授权发明 |
其他题名 | Drive apparatus that drives light emitting device |
英文摘要 | A drive apparatus includes a light emitting device, a light receiving device configured to receive light emitted by the light emitting device, a comparison circuit configured to compare a light quantity of light detected by the light receiving device with a target value indicating a light quantity of light to be emitted by the light emitting device and generate a control signal corresponding to a comparison result, and a drive circuit configured to supply a drive signal corresponding to the control signal to the light emitting device. The drive circuit includes a gain changing switch configured to change, in accordance with the target value, a gain of the drive circuit. |
公开日期 | 2019-03-05 |
申请日期 | 2017-05-18 |
状态 | 授权 |
内容类型 | 专利 |
源URL | [http://ir.opt.ac.cn/handle/181661/34348] ![]() |
专题 | 半导体激光器专利数据库 |
作者单位 | CANON KABUSHIKI KAISHA |
推荐引用方式 GB/T 7714 | ENDO, WATARU,SHIOMICHI, HIROTAKA. Drive apparatus that drives light emitting device. US10220636. 2019-03-05. |
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