US 12,455,400 B2
Ultra-compact multilayer metasurface imaging system integrating lenses and spaces
Chia Wei Hsu, Los Angeles, CA (US); Shiyu Li, Los Angeles, CA (US); and Mahsa Torfeh, Los Angeles, CA (US)
Assigned to UNIVERSITY OF SOUTHERN CALIFORNIA, Los Angeles, CA (US)
Filed by UNIVERSITY OF SOUTHERN CALIFORNIA, Los Angeles, CA (US)
Filed on Sep. 14, 2022, as Appl. No. 17/944,959.
Claims priority of provisional application 63/243,914, filed on Sep. 14, 2021.
Prior Publication US 2023/0081415 A1, Mar. 16, 2023
Int. Cl. G02B 1/00 (2006.01); H04N 25/71 (2023.01)
CPC G02B 1/002 (2013.01) [H04N 25/71 (2023.01)] 17 Claims
OG exemplary drawing
 
1. A lens system, comprising:
a first metasurface spaced a first distance from an aperture and comprises a silicon nitride (SiN) layer having a thickness of at least 800 nm and a silica substrate where the SiN layer is on the silica substrate;
a second metasurface spaced a second distance from the first metasurface, wherein the first metasurface is between the aperture and the second metasurface; and
a sensing device spaced a third distance from the second metasurface, wherein the first metasurface and the second metasurface are between the aperture and the sensing device.