| abstract |
The invention relates to a sensor system comprising a LiDAR unit, a camera for visible light and a cover, through which light reaches the LiDAR unit and the camera. The cover has a layer containing colourants. The light transmission of the cover is 3% to 25% in the range from 380 nm to 780 nm and 40% or more in the range from 380 nm to 1100 nm. The attenuation of the LiDAR signal by the cover is such that at least 65% of the original signal intensity reaches the LiDAR detector. The layer containing colourants contains a composition having i) at least 70 wt% of a transparent thermoplastic polymer, ii) at least one green and/or red colourant, and iii) at least one red and/or violet colourant. The product of the weight percentage total of colourants ii) and iii) and the thickness of the layer containing colourants is 0.041 to 0.12 wt% mm. Finally, the composition contains 0 to 0.0005 wt% IR absorbers. |