US 12,460,919 B2
Compact metalens depth sensors
Federico Capasso, Cambridge, MA (US); Todd Zickler, Cambridge, MA (US); Qi Guo, Cambridge, MA (US); Zhujun Shi, Cambridge, MA (US); Yao-Wei Huang, Cambridge, MA (US); and Emma Alexander, Cambridge, MA (US)
Assigned to PRESIDENT AND FELLOWS OF HARVARD COLLEGE, Cambridge, MA (US)
Filed by PRESIDENT AND FELLOWS OF HARVARD COLLEGE, Cambridge, MA (US)
Filed on Feb. 13, 2023, as Appl. No. 18/109,182.
Application 18/109,182 is a continuation of application No. 17/086,197, filed on Oct. 30, 2020, granted, now 11,578,968.
Claims priority of provisional application 62/928,929, filed on Oct. 31, 2019.
Prior Publication US 2025/0314480 A1, Oct. 9, 2025
Int. Cl. G01B 11/22 (2006.01); G02B 1/00 (2006.01); G06T 7/55 (2017.01)
CPC G01B 11/22 (2013.01) [G02B 1/002 (2013.01); G06T 7/55 (2017.01); G06T 2207/10028 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A depth sensor for determining depth, comprising:
a photosensor;
a single metalens configured to diffract a single image containing a plurality of pixels into a first image and a second image to simultaneously produce the first image and the second image on different portions of the surface of the photosensor, wherein the plurality of pixels of the single image corresponds to a first plurality of pixels of the first image and a second plurality of pixels of the second image; and
a processor;
memory including programming executable by the processor to:
receive, from the photosensor, a measurement of the first plurality of pixels and the second plurality of pixels; and
creating a depth map of the single image by determining the depth associated with each pixel of the plurality of pixels of the single image through the measurement of the first plurality of pixels and the second plurality of pixels.