Polarizing, photochromic devices and methods of making the same
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United States of America Patent
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Jul 12, 2011
Grant Date -
Feb 22, 2007
app pub date -
Oct 31, 2006
filing date -
May 17, 2004
priority date (Note) -
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Abstract
A liquid crystal cell including a first substrate having a first surface; a second substrate having a second surface, wherein the second surface of the second substrate is opposite and spaced apart from the first surface of the first substrate so as to define a region; and within the region defined by the first surface and the second surface, a liquid crystal material adapted to be at least partially ordered and at least one thermally reversible photochromic-dichroic compound adapted to be at least partially aligned and having an average absorption ratio greater than 2.3 in an activated state.
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