Surface pattern
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United States of America Patent
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-
Mar 22, 2005
Grant Date -
Mar 25, 2004
app pub date -
Sep 18, 2002
filing date -
Apr 15, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A surface pattern (18) is in the form of a visually visible mosaic comprising a number of surface portions (8; 9; 15; 16; 17) and is embedded in a laminate (1) comprising at least a transparent cover layer (2) and a protective layer (5). The surface portions (8; 9; 15; 16; 17) are transparent, scatter or reflect incident light (10) or diffract the incident light (10) at microscopic relief structures (4). The surface portions (8; 9; 15; 16; 17) are at least partially covered with a reflection layer (3). At least one of the surface portions occupied by a microscopic relief structure (4), an area (16), is a ZOM-structure (4') with a predeterminedly slowly varying profile height h and a spatial frequency f, wherein the product of a predetermined limit wavelength .lambda..sub.G of the visible spectrum and the spatial frequency f is greater than or equal to one.
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Cited Art Landscape
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