IMMERSION META-LENS AT VISIBLE WAVELENGTHS FOR DIFFRACTION-LIMITED IMAGING
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United States of America Patent
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Issued Date -
Apr 2, 2020
app pub date -
Mar 29, 2018
filing date -
Mar 31, 2017
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Abstract
An optical imaging apparatus is disclosed. The optical imaging apparatus includes a metasurface lens including a substrate and a plurality of nano-structures patterned on a first side of the substrate. The optical imaging apparatus further includes imaging optics disposed in a spaced apart relationship with a second side of the substrate. The second side is opposite the first side on which the nano-structures are patterned. A surface of the imaging optics and the second side of the substrate define a space for accommodating an immersion fluid. The metasurface lens is configured to direct light incident on the plurality of nano-structures towards the imaging optics through the space accommodating the immersion fluid.
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