US 12,276,807 B2
Polarization sorting metasurface microlens array device
Robert C. Devlin, Concord, MA (US); Pawel Latawiec, Cambridge, MA (US); John W. Graff, Swampscott, MA (US); Anne Janet Milliez, Cambridge, MA (US); Seyedali Forouzmand, Malden, MA (US); Dalia P. Ornelas Huerta, Cambridge, MA (US); Hao Zhou, Mooresville, NC (US); and Harris Miller, Sharon, MA (US)
Assigned to Metalenz, Inc., Boston, MA (US)
Filed by Metalenz, Inc., Boston, MA (US)
Filed on Mar. 11, 2024, as Appl. No. 18/601,842.
Application 18/601,842 is a continuation of application No. 18/194,359, filed on Mar. 31, 2023, granted, now 11,927,769.
Claims priority of provisional application 63/362,285, filed on Mar. 31, 2022.
Prior Publication US 2024/0210715 A1, Jun. 27, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 27/28 (2006.01); B82Y 20/00 (2011.01); G02B 1/00 (2006.01); G02B 27/42 (2006.01)
CPC G02B 27/285 (2013.01) [B82Y 20/00 (2013.01); G02B 1/002 (2013.01); G02B 27/4261 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A polarization imaging device comprising:
a lens receiving an image light;
a metasurface lenslet array comprising a plurality of metasurface lenslets, wherein the plurality of metasurface lenslets comprise a plurality of first metasurface lenslets configured to diffract the image light from the lens with intensity proportional with a first polarization light in a first direction and intensity proportional with a second polarization in a second direction; and
an image sensor positioned in the optical path of the first polarization and the second polarization, and wherein the image sensor comprises a plurality of image sensing units including a first image sensing unit positioned to sense the first polarization and a second image sensing unit positioned to sense the second polarization,
wherein the lens comprises a microlens array,
wherein the metasurface lenslet array comprises a polarization metasurface,
wherein the microlens array is positioned above the metasurface lenslet array such that light passes through the microlens array and is diffracted by the metasurface lenslet array into the image sensor.