Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Andreas Schilling0
René Staub0
Wayne Robert Tompkin0
Date of Patent
May 8, 2007
0Patent Application Number
105143700
Date Filed
May 9, 2003
0Patent Primary Examiner
Patent abstract
The present invention relates to an optically variable element having surface portions with achromatic surface structures and different scatter, diffraction and reflection characteristics. The achromatic surface structures are combined with a thin-film structure, whereby upon turning or tilting the optically variable element, it is not the impression of a continuous color transition, but a defined, almost discrete color change that is produced for the viewer.
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