Detection and classification of light sources using a diffraction grating
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United States of America Patent
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Nov 10, 2020
Grant Date -
Jan 28, 2016
app pub date -
Oct 5, 2015
filing date -
Jan 15, 2008
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Abstract
A system mounted in a vehicle for classifying light sources. The system includes a lens and a spatial image sensor. The lens is adapted to provide an image of a light source on the spatial image sensor. A diffraction grating is disposed between the lens and the light source. The diffraction grating is adapted for providing a spectrum. A processor is configured for classifying the light source as belonging to a class selected from a plurality of classes of light sources expected to be found in the vicinity of the vehicle, wherein the spectrum is used for the classifying of the light source. Both the image and the spectrum may be used for classifying the light source or the spectrum is used for classifying the light source and the image is used for another driver assistance application.
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