Vehicle lamp device and abnormality detector of light source thereof

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	Vehicle lamp device and abnormality detector of light source thereof
其他题名	Vehicle lamp device and abnormality detector of light source thereof
	ICHIKAWA, TOMOYUKI
	2016-03-10
专利权人	KOITO MANUFACTURING CO., LTD.
公开日期	2016-03-10
授权国家	美国
专利类型	发明申请
摘要	An abnormality detector for a light source includes a laser diode which emits an excitation light and a fluorescent substance which is excited by the excitation light to generate a fluorescent light. The abnormality detector includes a first photo sensor which is sensitive to a wavelength of the excitation light, a second photo sensor which is sensitive to a wavelength of the fluorescent light, a first current-voltage conversion circuit which outputs a first detection signal based on an output of the first photo sensor, a second current-voltage conversion circuit which outputs a second detection signal based on an output of the second photo sensor, and a determination unit which determines whether an abnormality occurs based on the first detection signal and the second detection signal.
其他摘要	用于光源的异常检测器包括发射激发光的激光二极管和由激发光激发以产生荧光的荧光物质。异常检测器包括：第一光传感器，其对激发光的波长敏感;第二光传感器，其对荧光的波长敏感;第一电流 - 电压转换电路，其输出基于第一检测信号的第一检测信号。第一光电传感器的输出，第二电流 - 电压转换电路，其基于第二光电传感器的输出输出第二检测信号;以及确定单元，基于第一检测信号和第二检测确定是否发生异常信号。
主权项	An abnormality detector for a light source which includes a laser diode configured to emit an excitation light and a fluorescent substance configured to be excited by the excitation light to generate a fluorescent light, and which is configured to generate a white output light having spectra of the excitation light and the fluorescent light, the abnormality detector comprising: a first photo sensor which is sensitive to a wavelength of the excitation light and substantially insensitive to a wavelength of the fluorescent light and which is configured to receive a part of the output light to generate a first current in accordance with an amount of the received light; a second photo sensor which is sensitive to the wavelength of the fluorescent light and substantially insensitive to the wavelength of the excitation light and which is configured to receive a part of the output light to generate a second current in accordance with an amount of the received light; a first current-voltage conversion circuit which includes a first resistance provided on a path of the first current and which is configured to output a first detection signal corresponding to a voltage drop of the first resistance; a second current-voltage conversion circuit which includes a second resistance provided on a path of the second current and which is configured to output a second detection signal corresponding to a voltage drop of the second resistance; and a determination unit which is configured to determine whether an abnormality occurs based on the first detection signal and the second detection signal.
申请日期	2015-09-04
专利号	US20160069819A1
专利状态	授权
申请号	US14/845918
公开（公告）号	US20160069819A1
IPC 分类号	G01N21/95 \| F21S8/10 \| G01N21/47 \| G01N21/64 \| H02H7/20
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/59031
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. Vehicle lamp device and abnormality detector of light source thereof. US20160069819A1[P]. 2016-03-10.