US 12,392,930 B2
Meta-crystals slabs for general optical convolution and methods for designing meta-crystal slabs
Shanhui Fan, Stanford, CA (US); Weiliang Jin, Sunnyvale, CA (US); Cheng Guo, Stanford, CA (US); Nathan Zhao, Santa Clara, CA (US); Haiwen Wang, Stanford, CA (US); and Sean P. Rodrigues, Ann Arbor, MI (US)
Assigned to Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US); Toyota Jidosha Kabushiki Kaisha, Toyota (JP); 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 Dec. 8, 2022, as Appl. No. 18/077,604.
Claims priority of provisional application 63/287,145, filed on Dec. 8, 2021.
Prior Publication US 2023/0176248 A1, Jun. 8, 2023
Int. Cl. G02B 1/00 (2006.01); G02B 5/18 (2006.01); G02B 5/20 (2006.01); G02B 27/46 (2006.01)
CPC G02B 1/005 (2013.01) [G02B 5/1866 (2013.01); G02B 5/203 (2013.01); G02B 27/46 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A meta-crystal slab comprising:
a photonic structure with an input surface and an output surface;
a plurality of first voxels with a first permittivity and a plurality of second voxels with a second permittivity not equal to the first permittivity disposed between the input surface and the output surface; and
a periodicity equal to ‘a’, the periodicity being greater than an operating wavelength ‘λ’ for general convolution by the photonic structure, the photonic structure configured to provide an output image with at least one spatial differentiation of an input image.