PHOTOCHROMIC OPITCAL ELEMENT
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United States of America Patent
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app pub date -
Mar 9, 2007
filing date -
Jan 30, 2004
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Abstract
Described are optical elements made of a substrate having connected thereto an at least partial film of photochromic adhesive and an at least partial film of a polymeric organic material. Also described are optical elements made of a substrate having connected thereto an at least partial superstrate of a sealed photochromic composite of a film of a first polymeric organic material and a film of a second polymeric organic material having an at least partial film of a photochromic adhesive placed between the films of first and second polymeric organic materials. Methods to prepare the optical elements are also described.
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