Glass for autonomous car

Patent metadata

Field	Value
Publication number	US-11319240-B2
Application number	US-201816497074-A
Country	US
Kind code	B2
Filing date	Mar 29, 2018
Priority date	Mar 30, 2017
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

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 1051 nm to 1650 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 1051 nm to 1650 nm, is placed behind the internal face of the glass sheet.

First claim

The invention claimed is:

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 1051 nm to 1650 nm and having an external face and an internal face, wherein an infrared-based remote sensing device in the wavelength range from 1051 nm to 1650 nm is placed behind the internal face of the glass sheet,
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, wherein the exterior and interior glass sheets have an absorption coefficient lower than 5 m −1 in the wavelength range from 1051 nm to 1650 nm and wherein the infrared-based remote sensing device is placed on an internal face of the internal glass sheet, and
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 at least one glass sheet comprises a content, expressed as the total weight of glass percentages:
total iron (expressed as Fe 2 O 3 ) 0.002 to 0.06%;
Cr 2 O 3 0.0001 to 0.06%.

6. The trim element according to claim 1 , wherein the at least the one glass sheet comprises a content, expressed as the total weight of glass percentages:
total iron (expressed as Fe 2 O 3 ) 0.002 to 0.06%;
Cr 2 O 3 0.0015 to 1%; and
Co 0.0001 to 1%.

7. The trim element according to claim 1 , wherein the at least one glass sheet comprises a content, expressed as the total weight of glass percentages:
total iron (expressed as Fe 2 O 3 ) 0.02 to 1%;
Cr 2 O 3 0.002 to 0.5%; and
Co 0.0001 to 0.5%.

8. The trim element according to- claim 1 , wherein the at least one glass sheet comprises a content, expressed as the total weight of glass percentages:
total iron (expressed as Fe 2 O 3 ) from 0.002 to 1%;
Cr 2 O 3 0.001 to 0.5%;
Co 0.0001 to 0.5%; and
Se 0.0003 to 0.5%.

9. 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 the surroundings around the vehicle.

10. The trim element according to claim 1 , wherein an anti-reflective coating is provided on the surface of the automotive glazing.

11. 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 the visible light.

12. The trim element according to claim 1 , wherein the trim element is a cover for an A-, B-, C-, or D-pillar or a cover for trunk of a motor vehicle.

13. The trim element according to claim 1 , wherein a value of light transmission of the glass sheet is lower than a value of near infrared transmission.

14. The trim element according to claim 1 ,
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%.

15. 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 1051 nm to 1650 nm and having an external face and an internal face, wherein an infrared-based remote sensing device in the wavelength range from 1051 nm to 1650 nm is placed behind the internal face of the glass sheet,
wherein the trim element is a cover for an A-, B-, C-, or D-pillar or a cover for trunk of a motor vehicle,
and wherein the trim element is not part of an automotive windshield, sidelite, or backlite.

16. The trim element according to claim 15 , wherein the trim element is an exterior glass trim element.

17. The trim element according to claim 15 , wherein the absorption coefficient of the at least one glass sheet is lower than 1 m −1 .

18. The trim element according to claim 15 , wherein the infrared-based remote sensing device is optically coupled to the internal face of the glazing.

19. The trim element according to claim 15 , wherein the at least one glass sheet comprises a content, expressed as the total weight of glass percentages:
total iron (expressed as Fe 2 O 3 ) 0.002 to 0.06%;
Cr 2 O 3 0.0001 to 0.06%.

20. The trim element according to claim 15 , comprising exterior and interior glass sheets which each have a visible light transmission value lower than 10% and a near infrared transmission value higher than 50 %.

21. The trim element according to claim 15 , 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 the surroundings around the vehicle.

22. The trim element according to claim 15 , wherein an anti-reflective coating is provided on the surface of the automotive glazing.

Assignees

• Agc Glass Europe

Inventors

• Lambricht Thomas
• Sartenaer Yannick
• Fraselle Quentin
• Chorine Nicolas
• Collignon Maxime

Classifications

• G01S17/89

  for mapping or imaging · CPC title

• B32B2605/006

  Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings · CPC title

• B60R13/02

  {Internal} Trim mouldings {; Internal} Ledges; Wall liners {for passenger compartments}; Roof liners (B60R13/01 takes precedence {; padded linings for the vehicle interior B60R21/04; arrangements or adaptations of floor mats or carpets in vehicles B60N3/04; internal lining for trains B61D17/18}) · CPC title

• C03C3/087 Primary

  containing calcium oxide, e.g. common sheet or container glass · CPC title

• B32B17/10036 Primary

  comprising two outer glass sheets · CPC title