Vehicular lighting device
文献类型：专利
| 作者 | ICHIKAWA, TOMOYUKI |
| 发表日期 | 2019-03-05 |
| 专利号 | US10220779 |
| 著作权人 | KOITO MANUFACTURING CO., LTD. |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Vehicular lighting device |
| 英文摘要 | A first photosensor is sensitive to the wavelength of excitation light, insensitive to the wavelength of fluorescent light, and receives a portion of the output light to generate a first current corresponding to the amount of light received. A second photosensor is sensitive to the fluorescent light wavelength, insensitive to excitation light wavelength, and receives a portion of the output light to generate a second current corresponding to the received light amount. A first current/voltage conversion circuit outputs a first detection voltage corresponding to the voltage drop across a first resistor. A second current/voltage conversion circuit outputs a second detection voltage corresponding to the voltage drop across a second resistor. If (i) a relation between the magnitudes of the first detection voltage and the second detection voltage has reversed, or (ii) if the first detection voltage deviates from a normal voltage range, a judgment unit asserts an abnormality detection signal. |
| 公开日期 | 2019-03-05 |
| 申请日期 | 2017-06-01 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/34352]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | KOITO MANUFACTURING CO., LTD. |
| 推荐引用方式 GB/T 7714 | ICHIKAWA, TOMOYUKI. Vehicular lighting device. US10220779. 2019-03-05. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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