LiDAR reflective fabric

Patent metadata

Field	Value
Publication number	US-12169294-B2
Application number	US-202318136084-A
Country	US
Kind code	B2
Filing date	Apr 18, 2023
Priority date	Jun 8, 2022
Publication date	Dec 17, 2024
Grant date	Dec 17, 2024

Abstract

A composite material having a black pigment and a textile material. The composite material has a reflectivity toward near infrared electromagnetic radiation having a wavelength from 800 nm to 2500 nm of greater than or equal to 12%, and the composite material has a reflectivity toward visible light having a wavelength from 350 nm to 750 nm of less than or equal to 10%.

First claim

What is claimed is:

1. A composite material comprising:
a black pigment; and
a textile material, wherein
the black pigment comprises CuO comprising a near unity ratio of (−111)/(111) crystal facets and a crystal size around 100 Å for the (−111) plane,
the composite material has a reflectivity toward a band of near infrared electromagnetic radiation within a wavelength from 800 nm to 2500 nm of greater than or equal to 12%, and
the composite material has a reflectivity toward visible light having a wavelength from 350 nm to 750 nm of less than or equal to 10%.

2. The composite material of claim 1 , wherein the black pigment comprises a compound selected from the group consisting of CuO, TiO 2 , and a combination thereof.

3. The composite material of claim 1 , wherein the composite material has a reflectivity toward visible light having a wavelength from 350 nm to 750 nm of less than or equal to 5%.

4. The composite material of claim 1 , wherein the composite material has a reflectivity toward a band of near infrared electromagnetic radiation within a wavelength from 800 nm to 2500 nm of greater than or equal to 20%.

5. The composite material of claim 1 , wherein the black pigment is CuO having an average particle size of less than or equal to 5 microns.

6. The composite material of claim 1 , wherein the textile material is selected from the group consisting of polyamide, polyacrylonitrile, polyethylene terephthalate (PET), polybutyrate, polyurethane, nylon, polyester, and a combination of two or more thereof.

7. The composite material of claim 1 , wherein the composite material has a color with a lightness in CIELAB color space L* less than or equal to 40.

8. A fabric comprising the composite material of claim 1 .

9. A composite material comprising:
CuO; and
a textile material, wherein
the CuO has an average particle size less than or equal to 5 microns;
the CuO comprises a near unity ratio of (−111)/(111) crystal facets and a crystal size around 100 Å for the (−111) plane; and
the composite material has a color with a lightness in CIELAB color space L* less than or equal to 40.

10. The composite material of claim 9 , wherein the textile material is selected from the group consisting of polyamide, polyacrylonitrile, polyethylene terephthalate (PET), polybutyrate, polyurethane, nylon, polyester, and a combination of two or more thereof.

11. The composite material of claim 9 , wherein the composite material has a color with a lightness in CIELAB color space L* less than or equal to 10.

12. The composite material of claim 9 , wherein the composite material has a reflectivity toward a band of near infrared electromagnetic radiation within a wavelength from 800 nm to 2500 nm of greater than or equal to 12%.

13. The composite material of claim 9 , wherein the composite material has a reflectivity toward visible light having a wavelength from 350 nm to 750 nm of less than or equal to 10%.

14. The composite material of claim 9 , wherein the composite material has a blackness (M y ) from 125 to 165.

15. A method for making a black pigment-doped textile material, the method comprising:
combining a black pigment with a textile material to form the black pigment-doped textile material, and
extruding the black pigment-doped textile material, thereby producing a composite material fiber, wherein
the black pigment comprises CuO comprising a near unity ratio of (−111)/(111) crystal facets and a crystal size around 100 Å for the (−111) plane,
the black pigment-doped textile material has a reflectivity toward a band of near infrared electromagnetic radiation within a wavelength from 800 nm to 2500 nm of greater than or equal to 12%, and
the black pigment-doped textile material has a reflectivity toward visible light having a wavelength from 350 nm to 750 nm of less than or equal to 10%.

16. The method of claim 15 , wherein the extruding comprises heating the black pigment-doped textile material to a softening point of the textile material and drawing the black pigment-doped textile material through a die.

17. The method of claim 15 , wherein the extruding comprises heating the black pigment-doped textile material to a melting point of the textile material and drawing the black pigment-doped textile material through a die.

18. The method of claim 15 , wherein the extruding comprises drawing the black pigment-doped textile material through a spinneret, thereby producing filaments of the composite material fiber.

19. The method of claim 15 , wherein the black pigment is CuO having an average particle size of less than or equal to 5 microns.

Assignees

• Toyota Eng & Mfg North America
• Toyota Motor Co Ltd

Inventors

• Rowe Michael P
• Wu Songtao
• Banerjee Debasish
• Rutledge Charles R
• Peck Torin C
• Jones Michael

Classifications

• D06M11/42

  Oxides or hydroxides of copper, silver or gold · CPC title

• D06M2200/25

  Resistance to light or sun, i.e. protection of the textile itself as well as UV shielding materials or treatment compositions therefor; Anti-yellowing treatments · CPC title

• D06P1/44

  using insoluble pigments or auxiliary substances, e.g. binders · CPC title

• D06P1/0076

  Dyeing with mineral dye · CPC title

• D06M23/08

  Processes in which the treating agent is applied in powder or granular form (adhesives for multi-layer textile fabrics D06M17/00) · CPC title