US 12,092,791 B2
Optical metalens systems
Gregory Kress, San Francisco, CA (US); Abdoulaye Ndao, Brookline, MA (US); and Arindom Datta, Fremont, CA (US)
Assigned to Imagia, Inc., Las Vegas, NV (US)
Filed by Imagia, Inc., Las Vegas, NV (US)
Filed on Feb. 28, 2022, as Appl. No. 17/682,085.
Claims priority of provisional application 63/154,622, filed on Feb. 26, 2021.
Prior Publication US 2023/0075868 A1, Mar. 9, 2023
Int. Cl. G02B 1/00 (2006.01); C23C 16/24 (2006.01); C23C 16/56 (2006.01); G02B 13/06 (2006.01); G02B 27/00 (2006.01); G02B 27/10 (2006.01); G03F 7/16 (2006.01); H04N 25/13 (2023.01); G02B 3/00 (2006.01); G02B 5/20 (2006.01)
CPC G02B 1/002 (2013.01) [C23C 16/24 (2013.01); C23C 16/56 (2013.01); G02B 13/06 (2013.01); G02B 27/0025 (2013.01); G02B 27/1013 (2013.01); G03F 7/168 (2013.01); H04N 25/134 (2023.01); G02B 3/0056 (2013.01); G02B 2003/0093 (2013.01); G02B 5/201 (2013.01); G02B 2207/101 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An imaging system, comprising:
a multipixel digital imaging sensor with a plurality of subpixels, including at least:
a first set of subpixels to detect a first band of optical radiation,
a second set of subpixels to detect a second band of optical radiation, and
a third set of subpixels to detect a third band of optical radiation; and
a metalens filter layer comprising a plurality of subwavelength deflector elements that extend from a substrate with a repeating periodic pattern of a spatially multiplexed set of frequency-specific deflector elements that have different diameters and constant interelement on-center spacings for each of the first, second, and third bands of optical radiation, and wherein the diameters and interelement on-center spacings are selected to cause the metalens filter layer to:
receive optical radiation that includes optical radiation in each of the first, second and third bands,
direct optical radiation in the first band to the first set of subpixels,
direct optical radiation in the second band to the second set of subpixels, and
direct optical radiation in the third band to the third set of subpixels,
wherein each subwavelength deflector element has a height and a width that are each less than a smallest wavelength in the first, second, and third bands of optical radiation.