Insulating glass units with low-E and antireflective coatings, and/or methods of making the same

US9556066B2 · kind B2 · utility

Assignees

• Guardian Industries Corp. · US
• Centre Luxembourgeois de Recherches pour le Verre et la Ceramique S.A. (C.R.V.C.) · LU

Inventors

• Marcus Frank · Gelnhausen, DE
• Brent Boyce · Novi, US
• Hartmut Knoll · Bitterfeld-Wolfen, DE
• Alexander Lorenz · Phoenix, US
• Uwe Kriltz · Bitterfeld-Wolfen, DE

Key dates

• Filing date: Dec 13, 2011
• Grant date: Jan 31, 2017
• Expiry date: May 29, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49885
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

Certain example embodiments of this invention relate to insulating glass (IG) units including three substantially parallel spaced apart glass substrates, wherein at least two of the surfaces include low-emissivity (low-E) coatings and at least some of the non-low E coated surfaces have antireflective (AR) coatings disposed thereon. In certain example embodiments, low-E coatings are provided on the second and fifth surfaces of the IG unit, and each internal surface of the IG unit that does not support a low-E coating does support an AR coating. Additional AR coatings may be provided on one or both of the outermost surfaces in certain example embodiments. In some cases, the center substrate need not be heat treated because of the reduced absorption enabled by providing the low-E coatings on the two outermost substrates, as well as the reduced heat accumulation in the center lite itself and in the two adjacent spacers.