METASURFACE REFLECTOR, PROJECTION DEVICE, AND NEAR-EYE WEARABLE DEVICE
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Sep 20, 2024
filing date -
Sep 20, 2024
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Abstract
A metasurface reflector includes: a first metal layer and a second metal layer stacked in a first direction; a dielectric layer provided between the first metal layer and the second metal layer in the first direction; and a protective layer covering a surface of the second metal layer opposite to the dielectric layer. The dielectric layer includes a main surface on which the second metal layer is provided. The metasurface reflector is divided into a plurality of unit regions arranged in a second direction along the main surface and in a third direction along the main surface and intersecting the second direction. The second metal layer includes metal units respectively provided in all or some of the plurality of unit regions. The protective layer is made of a metal having a standard electrode potential higher than that of a metal constituting the second metal layer.
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