Heat-bendable mirrors
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United States of America Patent
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-
Mar 11, 2003
Grant Date -
Sep 13, 2001
app pub date -
Dec 22, 2000
filing date -
Oct 31, 1997
priority date (Note) -
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Abstract
A heat-formable mirror comprising a flat substrate capable of plastic flow upon application of heat and a sputter-deposited coating formed on the surface of the substrate. From the substrate outwardly, the coating comprises a transparent amorphous layer and a reflective layer comprising contiguous first and second different metal films. The first metal film, positioned nearer the substrate than the second metal film, is a reflective metal film, and the second metal film comprises a protective film that is less reflective than the reflective metal film, the second metal film being of niobium, tungsten, tantalum, iron and nickel and being present in a thickness sufficient to protect the first metal film and avoid significant reduction of reflectance during heat forming of the mirror.
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