Multi-layer low emissivity thin film coating

Details Multi-layer low emissivity thin film coating Multi-layer low emissivity thin film coating

1987-07-24

1989-11-28

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428630, 428632, 428633, 428673, B32B 1504, B32B 1706

Patent

active

048837210

ABSTRACT:
A multi-layer of thin film for application to a transparent substrate such as glass provides excellent visible light transmission while controlling both near infra-red solar energy and far infra-red reflected energy. The film comprises a layer of sputtered zinc, tin, or bismuth oxide, a layer of sputtered silver or silver alloy, a layer of sputtered titanium or stainless steel and a final layer of zinc, tin, or bismuth oxide. The product exhibits a nominal visible light transmittance of 55% and a reflectance less than about 15% for incident light on the substrate (glass) side at visible light wavelengths and reflectance less than about 6% for incident light on the film side in the visible wavelengths. Emissivity is less than 0.15. A method of fabricating the product is also disclosed.

REFERENCES:
patent: 4716086 (1987-12-01), Gillery et al.
patent: 4786563 (1988-11-01), Gillery et al.

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