US 11,897,232 B2
Glazing with optical device
Meijie Li, Louvain-la-Neuve (BE); Yannick Sartenaer, Vedrin (BE); Quentin Fraselle, Mont Saint Guibert (BE); and Marek Novotny, Namur (BE)
Assigned to AGC GLASS EUROPE, Louvain-la-Neuve (BE)
Filed by AGC GLASS EUROPE, Louvain-la-Neuve (BE)
Filed on Jan. 23, 2023, as Appl. No. 18/157,926.
Application 18/157,926 is a continuation of application No. 17/265,117, granted, now 11,613,104, previously published as PCT/EP2019/069521, filed on Jul. 19, 2019.
Claims priority of application No. 18187286 (EP), filed on Aug. 3, 2018; and application No. 18202028 (EP), filed on Oct. 23, 2018.
Prior Publication US 2023/0150247 A1, May 18, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 17/10 (2006.01); B60J 1/02 (2006.01); G01S 17/931 (2020.01)
CPC B32B 17/10036 (2013.01) [B32B 17/101 (2013.01); B32B 17/10449 (2013.01); B60J 1/02 (2013.01); G01S 17/931 (2020.01)] 17 Claims
OG exemplary drawing
 
1. A laminated glazing with an optically transparent area comprising:
at least one inner glass sheet and one outer glass sheet, each having an internal and an external face, at least one of the one inner glass sheet and the one outer glass sheet having an absorption coefficient less than 15 m−1 in the wavelength range from 750 to 1650 nm;
at least one thermoplastic interlayer to laminate the at least one inner and outer glass sheets, comprising at least a first zone and a second zone, the second zone being delimited by the optically transparent area; and
at least one optical sensor device provided on the inner face of the inner glass sheet integrated in the optically transparent area,
wherein in the second zone of the thermoplastic interlayer delimited by the optically transparent area, the laminated glazing has a value of infrared transmission TIR1 higher than a value of infrared transmission TIR2 of the first zone for working wavelengths of the optical sensor device, and
wherein the first zone of the thermoplastic interlayer is made of polyvinyl butyral and a material of the thermoplastic interlayer of the second zone is selected from the group consisting of ethylene vinyl acetate, Cyclic olefin polymer (COP), and polyurethane.
 
17. A laminated glazing with an optically transparent area comprising:
at least one inner glass sheet and one outer glass sheet, each glass sheet having an internal and an external face;
at least one thermoplastic interlayer to laminate the at least one inner and outer glass sheets, comprising at least a first zone and a second zone, the second zone being delimited by the optically transparent area; and
at least one optical sensor device provided on the inner face of the inner glass sheet integrated in the optically transparent area,
wherein in the second zone of the theimoplastic interlayer delimited by the optically transparent area the laminated glazing has a value of infrared transmission TIR1 higher than a value of infrared transmission TIR2 of the first zone for working wavelengths of the optical sensor device, and
wherein the thermoplastic interlayer comprises the first zone made of polyvinyl butyral covering a main surface of the glazing and provided with a frame wherein a piece of thermoplastic interlayer of the second zone is selected from the group consisting of ethylene vinyl acetate, Cyclic olefin polymer (COP), and polyurethane and is placed inside the frame.