Patent ID: 9709717
Date: 2017-07-18
CPC Classifications: B32B,C03C,G02B,Y10T

Claim:
1. A transparent substrate comprising a solar-control multilayer stack, said solar control stack comprising in sequence starting from the substrate: a first dielectric layer; a first functional layer comprising a material that reflects infrared radiation; a second dielectric layer; a second functional layer comprising a material that reflects infrared radiation; a third dielectric layer; a third functional layer comprising a material that reflects infrared radiation; and a fourth dielectric layer, wherein a geometric thickness of the second functional layer starting from the substrate is at least 4% less than geometric thicknesses of the first and third functional layers, wherein the functional layers comprise a material selected from the group consisting of silver, gold, palladium, platinum, aluminum, copper, and mixtures and alloys thereof, and wherein the first functional layer has a thickness of 80 Å to 161 Å, the second functional layer has a thickness of 64.8 Å to 120 Å, and the third functional layer has a thickness of 80 Å to 217 Å.