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US 12,661,874 B2Granted
Vehicle glazing and associated device with near-infrared vision system
AssigneeSaint-Gobain Sekurit France
InventorPauline Girard
Life of this patent
Estimating the term…
Abstract
A vehicle glazing includes a first extra clear glass sheet forming an exterior glazing) and an anti-reflective coating that is anti-reflective at 905 nm or 1550 nm.
Claims20
A vehicle glazing, comprising:
- a first glass sheet forming an exterior glazing, with a first external main face oriented towards an exterior environment of a vehicle and a second internal main face oriented toward a passenger compartment of the vehicle,
- a lamination interlayer made of polymer material with a first main face oriented toward the second internal main face and with a second main face opposite the first main face,
- a second glass sheet intended to be the interior glazing with a third external main face on a side of the second internal main face and a fourth internal main face oriented toward the passenger compartment,
- at least one first zone that forms an infrared transmission zone transparent at at least a first working wavelength in the infrared region which is 905 nm±30 nm and/or at least a second working wavelength in the infrared region which is 1550 nm±30 nm, or both at said first working wavelength and said second working wavelength,
- an opaque masking layer on the second internal main face or on the first main face of the lamination interlayer and the opaque masking layer is absent at least in a central zone in line with the infrared transmission zone or has a gap in line with the infrared transmission zone,
- wherein in said infrared transmission zone, the glazing comprises opposite the first external main face:
- a) an anti-reflective coating at the first working wavelength with a thickness which is 165 nm±50 nm and in the infrared transmission zone the glazing with the anti-reflective coating has a total transmission of at least 85% at the first working wavelength,
- b) or an anti-reflective coating at the second working wavelength with a thickness which is 275 nm±50 nm and in the infrared transmission zone the glazing with said anti-reflective coating has a total transmission of at least 85% at the second working wavelength.
5 more elements
A vehicle glazing, comprising:
- a first glass sheet forming an exterior glazing, with a first external main face oriented towards an exterior environment of a vehicle and a second internal main face oriented toward a passenger compartment of the vehicle,
- a lamination interlayer made of polymer material with a first main face oriented toward the second internal main face and with a second main face opposite the first main face,
- a second glass sheet forming an interior glazing with a third external main face on a side of the second internal main face and a fourth internal main face oriented toward the passenger compartment,
- at least one first zone that forms an infrared transmission zone transparent at at least a first working wavelength in the infrared region which is 905 nm±30 nm or at least a second working wavelength in the infrared region which is 1550 nm±30 nm, or both at said first working wavelength and said second working wavelength,
- an opaque masking layer in on the fourth internal main face of the second glass sheet and the opaque masking layer is absent at least in a central zone in line with the infrared transmission zone or has a gap in line with the infrared transmission zone,
- wherein in said infrared transmission zone, the glazing comprises opposite the first external main face:
- a) an anti-reflective coating at the first working wavelength with a thickness which is 165 nm±50 nm and in the infrared transmission zone the glazing with the anti-reflective coating has a total transmission of at least 85% at the first working wavelength,
- b) or an anti-reflective coating at the second working wavelength with a thickness which is 275 nm±50 nm and in the infrared transmission zone the glazing with said anti-reflective coating has a total transmission of at least 85% at the second working wavelength.
5 more elements
A vehicle glazing, comprising:
- a first glass sheet forming an exterior glazing, with a first external main face oriented towards an exterior environment of a vehicle and a second internal main face oriented toward a passenger compartment of the vehicle,
- at least one first zone that forms an infrared transmission zone transparent at at least a first working wavelength in the infrared region which is 905 nm±30 nm or at least a second working wavelength in the infrared region which is 1550 nm±30 nm, or both at said first working wavelength and said second working wavelength,
- wherein in said infrared transmission zone, the glazing comprises opposite the first external main face:
- a) an anti-reflective coating at the first working wavelength with a thickness which is 165 nm±50 nm and in the infrared transmission zone the glazing with the anti-reflective coating has a total transmission of at least 85% at the first working wavelength,
- b) or an anti-reflective coating at the second working wavelength with a thickness which is 275 nm±50 nm and in the infrared transmission zone the glazing with said anti-reflective coating has a total transmission of at least 85% at the second working wavelength, and wherein in the infrared transmission zone with the anti-reflective coating, the vehicle glazing comprises on the second internal main face side a selective filter absorbent in the visible region and transparent at said first working wavelength or at said second working wavelength, or both at said first working wavelength and at said second working wavelength, the vehicle glazing having a total transmission of no more than 10.0% in the visible region.
2 more elements
A vehicle glazing, comprising:
- a first glass sheet forming an exterior glazing, with a first external main face oriented towards an exterior environment of a vehicle and a second internal main face oriented toward a passenger compartment of the vehicle,
- a lamination interlayer made of polymer material with a first main face oriented toward the second internal main face and with a second main face opposite the first main face,
- a second glass sheet forming an interior glazing with a third external main face on a side of the second internal main face and a fourth internal main face oriented toward the passenger compartment,
- at least one first zone that forms an infrared transmission zone transparent at at least a first working wavelength in the infrared region which is 905 nm±30 nm or at least a second working wavelength in the infrared region which is 1550 nm±30 nm, or both at said first working wavelength and said second working wavelength,
- on the second internal main face of the first glass sheet or the third external main face of the second glass sheet, a functional layer extending over all or part of the glazing, which is an electrically conductive layer that is transparent or an opaque masking layer, which functional layer is absorbent at said first working wavelength or at said second working wavelength, or both at said first working wavelength and at said second working wavelength, and which is absent from the infrared transmission zone at least in a central zone in line with the infrared transmission zone,
- wherein in said infrared transmission zone, the glazing comprises opposite the first external main face:
- a) an anti-reflective coating at the first working wavelength with a thickness which is 165 nm±50 nm and in the infrared transmission zone the glazing with the anti-reflective coating has a total transmission of at least 85% at the first working wavelength,
- b) or an anti-reflective coating at the second working wavelength with a thickness which is 275 nm±50 nm and in the infrared transmission zone the glazing with said anti-reflective coating has a total transmission of at least 85% at the second working wavelength.
5 more elements
Dependencies are inferred from the claim text.