Illumination device for a motor vehicle with a safety device to detect failure states, and method for detection of failure states
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United States of America Patent
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Mar 12, 2019
Grant Date -
May 18, 2017
app pub date -
Jun 11, 2015
filing date -
Jun 27, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The disclosure concerns an illumination device for a motor vehicle, with a laser light source that is designed to emit light, with a reflector comprising a reflection side that is designed to reflect light and comprises an electrically conductive layer, and an outside that faces away from the reflection side and is arranged on the opposite side. Furthermore, the illumination device has a safety device to detect failure states of said illumination device. The safety device has at least one inductive sensor that is arranged externally relative to the reflector, such that the outside of the reflector is facing toward the inductive sensor and the reflection side of the reflector is facing away from the inductive sensor, wherein the safety device is designed to detect a temperature change of at least one region of the reflection side of the reflector by the inductive sensor.
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