US 11,962,748 B2
Three dimensional depth mapping using dynamic structured light
Nitay Romano, Sunnyvale, CA (US); Nadav Grossinger, Foster City, CA (US); Yair Alpern, Tivon (IL); and Emil Alon, Pardes Hana (IL)
Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed by META PLATFORMS TECHNOLOGIES, LLC, Menlo Park, CA (US)
Filed on Jun. 4, 2021, as Appl. No. 17/339,559.
Application 17/339,559 is a continuation of application No. 16/859,871, filed on Apr. 27, 2020, granted, now 11,057,610.
Application 16/859,871 is a continuation of application No. 16/032,304, filed on Jul. 11, 2018, granted, now 10,687,047, issued on Jun. 16, 2020.
Application 16/032,304 is a continuation of application No. 15/030,851, granted, now 10,091,494, issued on Oct. 2, 2018, previously published as PCT/IL2014/050922, filed on Oct. 23, 2014.
Claims priority of provisional application 61/894,471, filed on Oct. 23, 2013.
Prior Publication US 2021/0297651 A1, Sep. 23, 2021
Int. Cl. H04N 13/296 (2018.01); G01S 7/481 (2006.01); G01S 17/46 (2006.01); G01S 17/89 (2020.01); G02B 27/42 (2006.01); G06F 3/01 (2006.01); G06F 3/03 (2006.01); H04N 13/128 (2018.01); H04N 13/207 (2018.01); H04N 13/282 (2018.01); H01S 5/42 (2006.01)
CPC H04N 13/296 (2018.05) [G01S 7/4815 (2013.01); G01S 17/46 (2013.01); G01S 17/89 (2013.01); G02B 27/4205 (2013.01); G02B 27/4255 (2013.01); G06F 3/017 (2013.01); G06F 3/0304 (2013.01); G06F 3/0321 (2013.01); H04N 13/128 (2018.05); H04N 13/207 (2018.05); H04N 13/282 (2018.05); H01S 5/423 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An optical cell comprising:
a plurality of different optical elements in optical series sharing an optical axis, the plurality of different optical elements aligned with a corresponding laser of an array of lasers and configured to apply a modulation to light previously emitted from the corresponding laser that later passes through each of the plurality of different optical elements forming a partial tile of a structured light pattern,
a last of the plurality of different optical elements in the optical series having a surface configured to shape the partial tile of the structured light pattern into a unique shape while projecting the partial tile of the structured light pattern for illuminating a portion of a scene, the unique shape depending on a preset random function that defines the surface.