US 12,481,085 B2
Stacked multi-frequency three-dimensional metasurface
Shanhui Fan, Stanford, CA (US); Ercan Mehmet Dede, Ann Arbor, MI (US); Sean P. Rodrigues, Ann Arbor, MI (US); and Haiwen Wang, Stanford, CA (US)
Assigned to Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US); and The Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US)
Filed by Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US)
Filed on Apr. 8, 2022, as Appl. No. 17/716,441.
Prior Publication US 2023/0324582 A1, Oct. 12, 2023
Int. Cl. G02B 1/00 (2006.01); G02B 5/30 (2006.01)
CPC G02B 1/002 (2013.01) [G02B 5/3025 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A metasurface comprising:
a multi-level three-dimensional metasurface comprising:
a first layer comprising a first kernel configured to apply a first convolution on a first frequency of an incident polarized light, the first convolution being a first order differentiation on the first frequency; and
a second layer comprising a second kernel different than the first kernel, the second kernel configured to apply a second convolution different than the first convolution on a second frequency different of the incident polarized light, the second convolution being another first order differentiation on the second frequency, and the second frequency being different than the first frequency.