STACK ARTICLE

摘要

Provided is a glass stack characterized by being provided with a glass substrate and a thin-layer stack formed on the glass substrate, wherein the thin-layer stack comprises, in order from the substrate side, a first layer configured from a dielectric, a second layer configured from metal consisting mainly of Ag, a third layer configured from a dielectric, a fourth layer configured from metal consisting mainly of Ag, and a fifth layer configured from a dielectric, the sum of the geometric thicknesses of the second layer and the fourth layer falls within the range of 22-29 nm, the geometric thickness of the second layer is 0.3-0.8 times the thickness of the geometric thickness of the fourth layer, the sum of the optical thicknesses of the first, third, and fifth layers falls within the range of 220-380 nm, the optical thickness of the third layer falls within the range of 140-200 nm, the optical thickness of the first layer is 0.4-1.5 times the optical thickness of the fifth layer, and regarding the reflection color tone from the glass substrate side, a* in the CIE L*a*b* chromaticity coordinate diagram is less than 3 when the incident angle falls within the range of 0°-60°. The glass stack achieves a reduction in reddish reflection tone and an improvement in the reflectivity of a near-infrared region, and thus is suitably used for window glass in order to improve the cooling/heating efficiency in a room.