Optical laminate
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United States of America Patent
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Apr 5, 2005
Grant Date -
Aug 15, 2002
app pub date -
Oct 19, 2001
filing date -
Apr 21, 1999
priority date (Note) -
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Abstract
An optical laminate comprising, laminated in the order mentioned, a support substrate, adhesive layer, cholesteric liquid crystal layer and protection layer, characterized in that the cholesteric liquid crystal layer has in at least part thereof an area indicating a diffraction power. The optical laminate is used for a polarization diffraction element, liquid crystal display device compensation element, decorative member, and forgery prevention element.
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