US 12,459,238 B2
Laminated vehicle glazing and device comprising an associated near-infrared vision system
Laurent Maillaud, Aubervilliers (FR); and Maxence Wilmet, Aubervilliers (FR)
Assigned to SAINT-GOBAIN SEKURIT FRANCE, Thourotte (FR)
Appl. No. 18/721,556
Filed by SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
PCT Filed Dec. 16, 2022, PCT No. PCT/FR2022/052400
§ 371(c)(1), (2) Date Jun. 18, 2024,
PCT Pub. No. WO2023/118710, PCT Pub. Date Jun. 29, 2023.
Claims priority of application No. 2114260 (FR), filed on Dec. 22, 2021.
Prior Publication US 2025/0058547 A1, Feb. 20, 2025
Int. Cl. B32B 7/12 (2006.01); B32B 3/26 (2006.01); B32B 7/023 (2019.01); B32B 17/10 (2006.01)
CPC B32B 17/10293 (2013.01) [B32B 3/266 (2013.01); B32B 7/023 (2019.01); B32B 7/12 (2013.01); B32B 17/10036 (2013.01); B32B 17/10119 (2013.01); B32B 17/10651 (2013.01); B32B 2307/4026 (2013.01); B32B 2307/416 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vehicle laminated glazed unit, with a given thickness, comprising:
a first glass sheet intended to be an exterior glazed unit, with a first external main face and a second internal main face oriented toward a passenger compartment,
a lamination interlayer made of polymer material forming an interlayer material having a thickness E0, with a main face oriented toward the second internal main face and another main face opposite the main face,
a second glass sheet intended to be an interior glazed unit with a third main face oriented toward the second internal main face and a fourth internal main face oriented toward the passenger compartment,
the first glass sheet has a total iron oxide content by weight of at most 0.05%,
a through-hole, in a thickness of the second glass sheet, the through-hole being centimetric, the through-hole delimited by a wall, closed or open hole, the through-hole extended by another through-hole forming an interlayer hole in a thickness of the lamination interlayer,
in a zone of the through-hole, a masking layer including a matrix and a coloring agent dispersed in said matrix, the masking layer absorbing in the visible and transparent at at least one working wavelength in the infrared range from 800 nm to 1800 nm,
wherein, in the through-hole, a piece, transparent at least at the working wavelength, is provided, the piece having a main bonding surface oriented toward the second internal main face and in contact with the masking layer and a main inner surface opposite the bonding surface,
wherein the masking layer forms an adhesive layer for bonding the piece to the first glass sheet via the main bonding surface, the masking layer having a thickness E1,
and the matrix is based on crosslinked polymer, E1 being submillimetric.