Pane with optically transparent sensor field

• US 8,809,785 B2
• Filed: 08/02/2010
• Issued: 08/19/2014
• Est. Priority Date: 08/04/2009
• Status: Active Grant

• Current Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Original Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Inventors: Arslan, Ilkay, Wohlfeil, Dirk
• Primary Examiner(s): Hannaher, Constantine
• Application Number:
  US13/381,639
• Publication Number:
  US 20120119104A1
• Time in Patent Office: 1,478 Days
• Field of Search: 250/338.1
• US Class Current: 250/338.1
• CPC Class Codes: B60R 11/04 Mounting of cameras operative during drive; Arrangement of controls thereof relative to the vehicle
• CPC Class Codes: B60R 2011/0026 Windows, e.g. windscreen
• CPC Class Codes: B60R 2011/0075 using a containment or docking space
• CPC Class Codes: G01S 7/4811 common to transmitter and receiver
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor

Abstract

A pane having an optically transparent sensor field including: at least one panel; at least one optically transparent sensor field on the pane; at least one hydrophilic coating applied on the optically transparent sensor field; and at least one encapsulation applied to the optically transparent sensor field and at least one sensor applied in the encapsulation.

Claims

1. A device comprising:

at least one pane,

at least one optically transparent sensor field on the pane,

at least one hydrophilic coating applied on the optically transparent sensor field,

at least one encapsulation applied on the optically transparent sensor field, and

at least one sensor applied in the encapsulation,

wherein the hydrophilic coating contains surface-absorbed hydrophilic particles and a carrier foil.

2. The device according to claim 1, wherein the sensor field has an opaque and/or colored border.

3. The device according to claim 1, wherein the sensor field has optical transparency to visible light and/or infrared radiation of >

60%.

4. The device according to claim 3, wherein the sensor field has optical transparency to visible light and/or infrared radiation of >

70%.

5. The device according to claim 1, wherein the hydrophilic coating contains polymers with COH, COOH, NH, NH₂, COONH, SO₃, SO₂, CN, OCN, SCN groups.

6. The device of claim 5, wherein the hydrophilic coating contains polymers with acrylic acid esters, polyethylene glycols, polysaccharides, polypeptides, polyurethanes, polyethers, polyvinyl butyral, polyvinyl pyrrolidone, silanes, silane-containing polymers, copolymers, and/or mixtures thereof.

7. The device according to claim 1, wherein the hydrophilic coating has a layer thickness of 10 nm to 50 μ

m.

8. The device according to claim 7, wherein the hydrophilic coating has a layer thickness of 100 nm to 25 μ

m.

9. The device according to claim 1, wherein the hydrophilic coating has a contact angle against water of <

25°

.

10. The device according to claim 9, wherein the hydrophilic coating has a contact angle against water of <

15°

.

11. The device according to claim 1, wherein the hydrophilic coating contains an antistatic coating.

12. The device according to claim 11, wherein the antistatic_coating contains quaternary ammonium compounds, silver, copper, tin, gold, aluminum, iron, tungsten, chromium, or alloys thereof and/or a conductive organic polymer.

13. The device according to claim 1, wherein the carrier foil has optical transparency to visible light and/or infrared radiation of >

80%.

14. The device according to claim 13, wherein the carrier foil has optical transparency to visible light and/or infrared radiation of >

90%.

15. The device according to claim 1, wherein the encapsulation is applied in an upper region of a windshield.

16. The device according to claim 15, wherein the encapsulation is applied behind a covering strip.

17. The device according to claim 1, wherein the encapsulation contains desiccants.

18. The device according to claim 17, wherein the encapsulation contains silica gel, CaCl₂, Na₂SO₄, activated charcoal, silicates, bentonites, and/or zeolites.

19. The device of claim 1, wherein the hydrophilic coating contains TiO₂.

20. The device of claim 1, wherein the hydrophilic coating contains surface-absorbed hydrophilic particles with a mean particle size of 2 nm to 1 μ

m.

21. The device of claim 20, wherein the hydrophilic coating contains surface-absorbed hydrophilic particles with a mean particle size of 10 nm to 300 nm.

23. A method comprising:

using the device according to claim 1 in motor vehicles, ships, airplanes, or helicopters,

wherein optical and electromagnetic data or signals are transmitted through at least one optically transparent sensor field.

24. The method of claim 23, wherein the device is used as windshield and/or rear window of a motor vehicle.

22. A method for production of a pane with an optically transparent sensor field, comprising:

applying a hydrophilic coating containing surface-absorbed hydrophilic particles and a carrier foil on a sensor field of a pane and

affixing an encapsulation with a sensor on the hydrophilic coating.

25. A device comprising:

a vehicle windshield pane;

an encapsulated sensor, comprising;

an encapsulation with at least one open end;

a carrier foil enclosing the at least one open end;

surface-absorbed hydrophilic particles on the carrier foil on a side interior to the encapsulation such that the transparency of a sensor field on the carrier foil is at least 70% for visible and infrared light;

an opaque or colored border surrounding the sensor field;

a sensor within the encapsulation arranged to receive visible and infrared light through the sensor field;

a desiccant located within the encapsulation and below the sensor; and

an adhesive layer connecting the carrier foil to the vehicle windshield pane.