Reduced ultraviolet radiation transmitting, electrochromic assembly
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United States of America Patent
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Oct 21, 1997
Issued Date -
N/A
app pub date -
Mar 18, 1996
filing date -
Feb 12, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electrochromic assembly which is useful, for example, as a rearview mirror or glazing is disclosed with reduced ultraviolet (UV) radiation degradation and reduced fogging or misting in high humidity conditions. The assembly may include a pair of glass or other elements confining an electrochromic medium therebetween. Ultraviolet radiation is preferably reduced by a sheet of specialized glass which may include higher iron oxide or cerium oxide content than conventional soda lime window glass. The specialized glass is preferably a tinted glass that absorbs substantially more light in those regions of the visible spectrum higher than about 560 nanometers than in other regions of the visible spectrum. An anti-fogging additive may also be included in the assembly.
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