Photochromic film comprising a gas barrier deposition film
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United States of America Patent
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Apr 30, 2002
Grant Date -
Jul 26, 2001
app pub date -
Apr 2, 1998
filing date -
Apr 3, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
It is an object of the present invention to provide a highly durable photochromic film retaining a photochromic activity for a long time even when used under high temperture and high humidity conditions. A durable photochromic film comprising a coloring material layer containing a photochromic material and a phototransmissive deposition film laminated to said coloring material layer is disclosed.
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