Device and a method for producing a diffractive microstructure

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United States of America Patent

PATENT NO 7827907
SERIAL NO

11660054

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Micro-protrusions, which constitute a diffractive microstructure, are produced by embossing the surface layer of a substrate by an embossing member having microgrooves in such a way that the cross-sectional area of a produced micro-protrusion is substantially smaller than the cross-sectional area of the microgroove producing said micro-protrusion. Thus, the embossing pressure is small, the risk of adhesion is reduced, it is possible to use a low embossing temperature, and microstructures may be produced at a high speed. Furthermore, the same embossing member may be used for producing a low microstructure, a normal microstructure, and a high microstructure.

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Patent Owner(s)

Patent OwnerAddress
AVANTONE OYTAMPERE TAMPERE WESTERN FINLAND

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Koivu, Matti Oulu, FI 2 10
Koivukunnas, Pekka Järvenpää , FI 51 365
Korhonen, Raimo Tampere, FI 9 96

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