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US 4,902,580 AGranted
Neutral reflecting coated articles with sputtered multilayer films of metal oxides
AssigneePPG Industries, Inc.
InventorF. Howard Gillery
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Abstract
A method for producing visually neutral high transmittance low emissivity coated articles comprising infrared reflective metal and antireflective metal oxide layers and an improved multiple layer coated article produced thereby comprising a high refractive index neutral metal oxide layer between the antireflective metal oxide layer and the infrared reflective metal layer are disclosed.
Claims10
A visually neutral reflectance, high transmittance, low emissivity article comprising:
- a. a transparent nonmetallic substrate;
- b. a first transparent antireflective metal oxide film having a refractive index of about 2.0 deposited on a surface of said substrate;
- c. a transparent metal oxide layer having a refractive index greater than 2.0 deposited on said first antireflective metal oxide film;
- d. a transparent infrared reflective metallic film deposited on said metal oxide layer;
- e. a transparent metal layer deposited on said infrared reflective metallic film;
- and
- f. a second transparent antireflective metal oxide film deposited on said metal layer.
4 more elements
Dependencies are inferred from the claim text.