US 12,005,679 B2
Laminated vehicle glazing, associated device having a near-infrared vision system, and production thereof
Claire Davis, Compiegne (FR); and Keihann Yavari, Margny-les-Compiegne (FR)
Assigned to SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
Appl. No. 17/790,644
Filed by SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
PCT Filed Dec. 23, 2020, PCT No. PCT/FR2020/052614
§ 371(c)(1), (2) Date Jul. 1, 2022,
PCT Pub. No. WO2021/136907, PCT Pub. Date Jul. 8, 2021.
Claims priority of application No. 2000022 (FR), filed on Jan. 3, 2020.
Prior Publication US 2023/0052395 A1, Feb. 16, 2023
Int. Cl. B32B 3/24 (2006.01); B32B 3/26 (2006.01); B32B 7/12 (2006.01); B32B 17/10 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/36 (2006.01)
CPC B32B 17/10293 (2013.01) [B32B 3/266 (2013.01); B32B 7/12 (2013.01); B32B 17/10036 (2013.01); B32B 27/08 (2013.01); B32B 27/30 (2013.01); B32B 27/36 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2255/28 (2013.01); B32B 2307/412 (2013.01); B32B 2307/42 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A laminated glazing for a vehicle, the laminated glazing of given thickness and comprising:
a first glass sheet intended to be an exterior glazing with a first external main face F1 and a second internal main face F2;
a lamination interlayer made of polymer material with a main face FA oriented toward the second internal main face F2 and with a main face FB opposite to the main face FA, of given thickness E3, and
a second glass or plastic sheet intended to be an interior glazing with a third main face F3, oriented toward the second internal main face F2, and a fourth internal main face F4
wherein:
the first glass sheet exhibits a content by weight of total iron oxide of at most 0.05%,
the second glass or plastic sheet exhibits a traversing hole in a thickness of the second glass or plastic sheet, with a width W1 which is at least centimetric,
the laminated glazing exhibits, under said traversing hole on a side of the second internal main face F2, a selective filter which absorbs in a visible region and which is transparent at at least one working wavelength in an infrared region in a range extending from 800 nm to 1800 nm, said selective filter having a main surface that is positioned to face the traversing hole,
opposite said traversing hole, the laminated glazing that faces the traversing hole exhibits:
a total transmission of at least 80% at the working wavelength, measured at 90°, and
a total transmission of at most 10% in the visible region.