| 摘要 |
<p>The invention relates to a glass substrate (10) provided on a main face with a stack of thin layers comprising a metallic functional layer (40) with reflective properties in the infrared and/or in solar radiation, based notably on silver or a metal alloy containing silver, and two antireflective coatings (20, 60), each of said coatings having at least one dielectric layer (22, 64) based on silicon nitride, optionally doped with at least one other element, such as aluminum, said functional layer (40) being disposed between the two antireflective coatings (20, 60), characterized in that the optical thickness e60 in nm of the overlying antireflective coating (60) is: e60=5×e40+α, where e40 is the geometric thickness in nm of the functional layer (40) such that 13≰e40≰25, and preferably 14≰e40≰18, and whereαis a number=25±15.</p> |
