Patent · US Active

IR-transparent sensor and camera system for motor vehicles

US12399256B2 · kind B2 · utility

0Cited by

4References

15Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Ulrich Grosser · Kürten, DE
Alexander Meyer · Mülheim an der Ruhr, DE
Thomas Pfingst · Tönisvorst, DE
Peter Capellen · Krefeld, DE
Rafael Oser · Krefeld, DE
Rainer Hagen · Leverkusen, DE
Tobias Sadler · Monheim am Rhein, DE
Vincenzo Taravella · Bergamo, IT
Andrea Crotti · Curno, IT
Stefania Scotuzzi · Brembate di Sopra, IT

Key dates

Filing date	Oct 11, 2019
Grant date	Aug 26, 2025
Priority date	—
Expiry date	Dec 15, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG01S7/4813
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A sensor system comprises a LiDAR unit, a camera for visible light and a cover through which light arrives at the LiDAR unit and the camera. The cover comprises a layer containing dyes.The light transmission of the cover in the range from 380 nm to 780 nm is 3% to 25% and in the range from 380 nm to 1100 nm is 40% or more. 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 dyes contains a composition comprising i) at least 70% by weight of a transparent thermoplastic polymer, ii) at least one green and/or red dye and iii) at least one red and/or violet dye.The product of the sum of the weight % fractions of dyes ii) and iii) and the thickness of the layer containing dyes is 0.041 to 0.12 wt % mm.Finally, the composition contains 0% to 0.0005% by weight of IR absorbers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.