US 11,745,473 B2
Laminated glazing with coloured reflection and high solar transmittance, and solar energy systems employing the same
Virginie Hody LeCaër, Bussigny-pres-Lausanne (CH); and Andreas Schüler, Lausanne (CH)
Assigned to KROMATIX SA
Filed by Kromatix SA, Romont (CH)
Filed on Feb. 12, 2021, as Appl. No. 17/174,925.
Application 17/174,925 is a continuation in part of application No. 16/044,680, filed on Jul. 25, 2018, granted, now 10,953,635.
Application 16/044,680 is a continuation of application No. 14/429,293, abandoned, previously published as PCT/IB2013/058115, filed on Aug. 29, 2013.
Claims priority of application No. PCT/IB2012/055000 (WO), filed on Sep. 20, 2012.
Prior Publication US 2021/0206146 A1, Jul. 8, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 17/10 (2006.01); F24S 80/52 (2018.01); G02B 5/28 (2006.01); B32B 17/06 (2006.01); H02S 20/23 (2014.01); H02S 20/26 (2014.01); B32B 7/02 (2019.01); H01L 31/048 (2014.01)
CPC B32B 17/10201 (2013.01) [B32B 7/02 (2013.01); B32B 17/06 (2013.01); B32B 17/10 (2013.01); B32B 17/10036 (2013.01); B32B 17/10146 (2013.01); B32B 17/10743 (2013.01); B32B 17/10761 (2013.01); B32B 17/10788 (2013.01); F24S 80/52 (2018.05); G02B 5/281 (2013.01); G02B 5/286 (2013.01); H01L 31/0488 (2013.01); H02S 20/23 (2014.12); H02S 20/26 (2014.12); B32B 2307/418 (2013.01); B32B 2367/00 (2013.01); B32B 2457/00 (2013.01); Y02B 10/10 (2013.01); Y02E 10/40 (2013.01); Y10T 428/2495 (2015.01); Y10T 428/24355 (2015.01); Y10T 428/24942 (2015.01); Y10T 428/24967 (2015.01)] 20 Claims
OG exemplary drawing
 
1. A laminated glazing unit for architectural integration of solar energy systems, comprising:
a layered glazing structure that includes
a substrate having a substrate refractive index nsub a value of which at a wavelength of 550 nm is between 1.45 and 1.6;
a multi-layered interference filter disposed on a first surface of the substrate and containing a non-quarter-wave thin-film stack defined at said wavelength of 550 nm,
wherein thicknesses of any two high-index material layers sandwiching an immediately-adjacent low-index material layer therebetween are different from one another and wherein thicknesses of any two low-index material layers sandwiching an immediately-adjacent high-index material layer therebetween are different from one another,
wherein the high-index layers each have a refractive index from 1.8 to 2.5 and the low refractive index layers each have a refractive index from 1.25 to 2.2;
and
a laminating polymer layer disposed on the multi-layered interference filter, said laminating polymer layer having a polymer refractive index npol a value of which at the wavelength of 550 nm between 1.45 and 1.6;
wherein said layered glazing structure, when the substrate is in contact with an incident medium having a refractive index of ninc=1, is characterized by a first reflectance value for IR light at every wavelength between 1 micron and 2.5 micron is between 65% and 29% for at least angles of reflection of zero degrees, 65 degrees, 70 degrees, 75 degrees, 80 degrees, and 85 degrees.