US 12,449,564 B2
Metasurface with an absorptive aperture border
R. Stewart Nielson, Pleasant Grove, UT (US); Shaun Patrick Ogden, Saratoga Springs, UT (US); and Bradley R. Willliams, Pocatello, ID (US)
Assigned to Moxtek, Inc., Orem, UT (US)
Filed by Moxtek, Inc., Orem, UT (US)
Filed on Jul. 17, 2023, as Appl. No. 18/353,568.
Claims priority of provisional application 63/398,571, filed on Aug. 17, 2022.
Prior Publication US 2024/0061147 A1, Feb. 22, 2024
Int. Cl. G02B 1/00 (2006.01); G02B 5/00 (2006.01); G02B 5/26 (2006.01); G02B 5/28 (2006.01)
CPC G02B 1/002 (2013.01) [G02B 5/003 (2013.01); G02B 5/26 (2013.01); G02B 5/28 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A metasurface optical device comprising:
a transparent substrate including a first-side and a second-side opposite of the first-side;
a blocking-layer on the substrate, the blocking-layer configured to block light from transmitting therethrough;
an aperture extending through the blocking-layer, the blocking-layer encircling the aperture, and the aperture configured to allow light to transmit through the device;
an array of pillars located on the first-side of the substrate and aligned with the aperture, the array of pillars including different pillars with different diameters with respect to each other; and
the blocking-layer includes an absorptive-layer configured to absorb the light and a reflective-layer configured to reflect the light, the absorptive-layer includes a first-absorptive-layer and a second-absorptive-layer, and the reflective-layer is sandwiched between the first-absorptive-layer and a second-absorptive-layer.