US 12,409,710 B2
Laminated glass
Yuhei Gima, Tokyo (JP)
Assigned to AGC Inc., Tokyo (JP)
Filed by AGC Inc., Tokyo (JP)
Filed on Aug. 24, 2022, as Appl. No. 17/894,301.
Application 17/894,301 is a continuation of application No. PCT/JP2021/014317, filed on Apr. 2, 2021.
Claims priority of application No. 2020-067824 (JP), filed on Apr. 3, 2020.
Prior Publication US 2023/0001770 A1, Jan. 5, 2023
Int. Cl. B32B 3/18 (2006.01); B32B 17/08 (2006.01); B32B 17/10 (2006.01); B32B 23/00 (2006.01); B32B 23/08 (2006.01); B32B 27/08 (2006.01); B32B 27/28 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B32B 27/40 (2006.01); B60J 1/00 (2006.01); B60J 3/04 (2006.01)
CPC B60J 1/001 (2013.01) [B32B 3/18 (2013.01); B32B 17/08 (2013.01); B32B 17/10036 (2013.01); B32B 23/00 (2013.01); B32B 23/08 (2013.01); B32B 27/08 (2013.01); B32B 27/281 (2013.01); B32B 27/285 (2013.01); B32B 27/286 (2013.01); B32B 27/302 (2013.01); B32B 27/325 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B32B 27/365 (2013.01); B32B 27/40 (2013.01); B60J 3/04 (2013.01); B32B 2250/40 (2013.01); B32B 2307/412 (2013.01); B32B 2307/51 (2013.01); B32B 2457/20 (2013.01); B32B 2605/006 (2013.01)] 20 Claims
 
1. Laminated A laminated glass, having comprising:
a first glass substrate;
a second glass substrate laminated to the first glass substrate;
a first interlayer disposed between the first glass substrate and the second glass substrate and being in contact with the first glass substrate;
a second interlayer disposed between the first glass substrate and the second glass substrate and being in contact with the second glass substrate; and
first and second functional members disposed between the first and second interlayers and being in contact with the first and second interlayers,
wherein the first and second functional members have a higher rigidity than the first and second interlayers and are spaced apart from each other forming a gap by a distance d of at least 15 mm, the second glass substrate has a first surface A in contact with the second interlayer, a second surface A not in contact with the second interlayer, a functional member area having the first and second functional members and a gap between the first and second functional members, and a longitudinal cross-section in which a radius of curvature of the second surface A becomes the smallest among cross-sections containing the normal at the center of gravity, and when viewed from a normal direction, the longitudinal cross-section extends in a first direction, a second direction is orthogonal to the first direction, and formula (1) holds

OG Complex Work Unit Math
where Rx is the average value of the radius of curvature in mm, when in the functional member area of the second glass substrate, the second surface A is measured every 50 mm along the first direction, Ry is the average value of the radius of curvature in mm, when in the functional member area of the second glass substrate, the second surface A is measured every 50 mm along the second direction, Lx is a maximum length of the functional member area in the first direction in mm, and Ly is a maximum length of the functional member area in the second direction in mm.