公开(公告)号：US11516457B2

公开(公告)日：2022-11-29

申请号：US17348469

申请日：2021-06-15

Applicant: Meta Platforms Technologies, LLC

Inventor： Zihe Gao ,  Michael Hall ,  Qing Chao ,  Zhaoming Zhu ,  Tin Komljenovic

IPC: G01B11/25 ,  H04N13/254 ,  G02B27/01 ,  G02F1/225

Abstract: A switchable fringe pattern illuminator includes an optical path switch configured to receive light and dynamically control an amount of light that is provided to a first waveguide and an amount of light that is provided to a second waveguide. A first projector configured to generate a first fringe pattern using light from the first waveguide. The first fringe pattern illuminates a first portion of a target area. A second projector configured to generate a second fringe pattern using light from the second waveguide. The second fringe pattern illuminates a second portion of a target area. The illuminator may be part of a depth camera assembly (DCA). The DCA is configured to capture images of a portion of the target area. The DCA is further configured to determine depth information for an object in the target area based in part on the captured images.