Illumination device for vehicle, has sensor arrangement that is provided for determining contamination of housing component based on change in light signal reflected by housing component

摘要

The illumination device (1) has a printed circuit board (5) on which a lighting module (2) and a sensor arrangement (3) are mounted. A light source is provided in the lighting module, for emitting light signal to a housing component (4). The sensor arrangement is provided for determining contamination of housing component based on the change in light signal reflected by housing component. A control unit is coupled with sensor arrangement. An independent claim is included for method for monitoring lighting module.