Stacked zone plates for pitch frequency multiplication
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United States of America Patent
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May 2, 2017
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N/A
app pub date -
Oct 31, 2013
filing date -
Nov 2, 2012
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Abstract
A compound x-ray lens and method of fabricating these lenses are disclosed. These compound lenses use multiple zone plate stacking to achieve a pitch frequency increase for the resulting combined zone plate. The compound equivalent zone plate includes a first zone plate having an initial pitch frequency stacked onto a second zone plate to form an equivalent compound zone plate. The equivalent zone plate has a pitch frequency that is at least twice the initial pitch frequency. Also, in one example, the equivalent zone plate has a mark-to-space ratio of 1:1.
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