Polarizing, photochromic devices and methods of making the same
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United States of America Patent
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Nov 25, 2008
Grant Date -
Mar 1, 2007
app pub date -
Oct 31, 2006
filing date -
Jul 1, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A method of making a composite element including: forming a sheet of an at least partially ordered liquid crystal polymer having at least a first general direction, a liquid crystal material having at least a second general direction distributed within at least a portion of the liquid crystal polymer; and at least one photochromic-dichroic compound having an average absorption ratio of at least 1.5 in an activated state that is at least partially aligned with at least a portion of the liquid crystal material; and connecting at least a portion of the sheet to at least a portion of an optical substrate to form the composite element.
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