Glass for autonomous car
The invention concerns a trim element for a motor vehicle comprising at least one glass sheet having an absorption coefficient lower than 5 m −1 in the wavelength range from 750 to 1050 nm and having an external and an internal faces. According to the present invention, an infrared-based remote sensing device in the wavelength range from 750 to 1050 nm, is placed behind the internal face of the glass sheet.
1. A trim element for a motor vehicle, comprising at least one glass sheet having an absorption coefficient lower than 5 m −1 in the wavelength range from 750 to 1050 nm and having an external face and an internal face, wherein an infrared-based remote sensing device in the wavelength range from 750 to 1050 nm is placed behind the internal face of the glass sheet,
wherein the trim element is not part of an automotive windshield, sidelite, or backlite.
2. The trim element according to claim 1 , wherein the trim element is an exterior glass trim element.
3. The trim element according to claim 1 , wherein the absorption coefficient of the at least one glass sheet is lower than 1 m −1 .
4. The trim element according to claim 1 , wherein the infrared-based remote sensing device is optically coupled to the internal face of the glazing.
5. The trim element according to claim 1 , wherein the trim element is a laminated trim element comprising an exterior glass sheet and an interior glass sheet laminated with at least one thermoplastic interlayer and wherein the exterior and interior glass sheets have an absorption coefficient lower than 5 m −1 in the wavelength range from 750 to 1050 nm,
wherein the infrared-based remote sensing device is placed on face 4, and
wherein the exterior and interior glass sheets have a visible light transmission value lower than 10% and a near infrared transmission value higher than 50%.
6. The trim element according to claim 1 , wherein the at least one glass sheet comprises, based on a total weight of glass percentages:
total iron (expressed as Fe2O3) in an amount of 0.002 to 0.06%, and
Cr2O3 in an amount of 0.0001 to 0.06%.
7. The trim element according to claim 1 , wherein the at least one glass sheet comprises, based on a total weight of glass percentages:
total iron (expressed as Fe2O3) in an amount of 0.002 to 0.06%,
Cr2O3 in an amount of 0.0015 to 1%, and
Co in an amount of 0.0001 to 1%.
8. The trim element according to claim 1 , wherein the at least one glass sheet comprises, based on a total weight of glass percentages:
total iron (expressed as Fe2O3) in an amount of 0.02 to 1%,
Cr2O3 in an amount of 0.002 to 0.5%, and
Co in an amount of 0.0001 to 0.5%.
9. The trim element according to claim 1 , wherein the at least one glass sheet comprises, based on a total weight of glass percentages:
total iron (expressed as Fe2O3) in an amount from 0.002 to 1%,
Cr2O3 in an amount of 0.001 to 0.5%,
Co in an amount of 0.0001 to 0.5%, and
Se in an amount of 0.0003 to 0.5%.
10. The trim element according to claim 1 , wherein the infrared-based remote sensing device is a LIDAR system based on scanning, rotating, flashing or solid state LiDARs and enabling of 3D mapping surroundings around the vehicle.
11. The trim element according to claim 1 , further comprising an anti-reflective coating provided on a surface of the trim element.
12. The trim element according to claim 1 , wherein at least one glass sheet is covered with at least one near-infrared transparent coating that absorbs and/or reflects visible light.
13. The trim element according to claim 1 , wherein the trim element is a cover for an A-, B- and/or C-pillar, or a cover for a trunk of a motor vehicle.
14. The trim element according to claim 1 , having a value of light transmission lower than a value of near infrared transmission.