US 12,134,247 B2
Automotive laminate camera heating system with low distortion
Mario Arturo Mannheim Astete, Lima (PE); and Laura Granados Caro, Lima (PE)
Assigned to AGP America S.A., Panama (PA)
Appl. No. 16/982,190
Filed by AGP America S.A., Ciudad de Panama (PA)
PCT Filed Mar. 20, 2019, PCT No. PCT/IB2019/052290
§ 371(c)(1), (2) Date Sep. 18, 2020,
PCT Pub. No. WO2019/180651, PCT Pub. Date Sep. 26, 2019.
Claims priority of provisional application 62/645,601, filed on Mar. 20, 2018.
Prior Publication US 2021/0039358 A1, Feb. 11, 2021
Int. Cl. B23B 17/00 (2006.01); B32B 17/10 (2006.01)
CPC B32B 17/10036 (2013.01) [B32B 17/10174 (2013.01); B32B 17/10119 (2013.01); B32B 17/10293 (2013.01); B32B 17/10348 (2013.01); B32B 17/10541 (2013.01); B32B 17/1077 (2013.01); B32B 17/10788 (2013.01); B32B 2315/08 (2013.01); B32B 2605/006 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A vehicle laminated glazing having a camera field of view area with reduced distortion, comprising:
at least two glass layers, an outer glass layer and an inner glass layer;
a resistive heating circuit between the outer and inner glass layers that heats at least a portion of the inner or outer glass layers in the camera field of view area, the resistive heating circuit having an operating temperature range from 0 to 70° C.;
a plastic layer placed between the outer and inner glass layers, wherein the plastic layer has a cutout in the area that is heated by the resistive heating circuit, and wherein the plastic layer has a glass transition temperature that falls within the operating temperature range of the heating circuit; and
an insert placed into the cutout of the plastic layer, comprised of an interlayer having a glass transition temperature that falls outside the range from 0 to 70° C. which corresponds to the operating temperature range of the heating circuit, and wherein the insert has a thickness that is about the same as the corresponding plastic layer.