Electromagnetic wave focusing device and optical apparatus including the same
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United States of America Patent
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Jun 11, 2019
Grant Date -
Dec 7, 2017
app pub date -
Dec 15, 2016
filing date -
Jun 3, 2016
priority date (Note) -
In Force
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Abstract
Electromagnetic wave focusing devices and optical apparatuses including the same are provided. An electromagnetic wave focusing device may include a plurality of material members located at different distances from a reference point. The intervals and/or widths of the material members may vary with distance from the reference point. For example, the intervals and/or widths of the material members may increase or decrease with distance from the reference point. The intervals and/or widths of the material members may be controlled to satisfy a spatial coherence condition with the electromagnetic wave.
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