GRATING
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United States of America Patent
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N/A
Issued Date -
May 2, 2013
app pub date -
Oct 23, 2012
filing date -
Oct 28, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a grating. The grating includes a substrate and a plurality of protrusions located on a surface of the substrate. The protrusions are parallel to and spaced from each other. A cavity is formed between each two adjacent protrusions. An aspect ratio of the grating is equal to or greater than about 6:1. A width of each cavity is in the range of about 25 nm to about 150 nm. The grating provided by present invention has good diffractive effects.
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