Combined thermochromic and electrochromic optical device
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United States of America Patent
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Jan 15, 2013
Grant Date -
Sep 8, 2011
app pub date -
Aug 31, 2009
filing date -
Sep 2, 2008
priority date (Note) -
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Abstract
An optical device (1) includes a first transparent substrate (10), a thermochromic device (20) covering a surface (11) of the first transparent substrate (10), a second transparent substrate (50), an electrochromic device (40) covering a surface (51) of the second transparent substrate (50) and a thermally insulating volume (30) separating the first transparent substrate (10) and the second transparent substrate (50). The thermally insulating volume (30) is preferably a vacuum volume or a volume (31) filled with gas.
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