US 12,467,744 B2
Depth data measuring device and structured light projection unit
Minjie Wang, Shanghai (CN); and Yushi Liang, Shanghai (CN)
Assigned to SHANGHAI PERCIPIO TECHNOLOGY LIMITED, Shanghai (CN)
Appl. No. 18/016,670
Filed by SHANGHAI PERCIPIO TECHNOLOGY LIMITED, Shanghai (CN)
PCT Filed Jul. 22, 2021, PCT No. PCT/CN2021/107785
§ 371(c)(1), (2) Date Jan. 17, 2023,
PCT Pub. No. WO2022/017441, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 202010712929.2 (CN), filed on Jul. 22, 2020; application No. 202110423508.2 (CN), filed on Apr. 20, 2021; and application No. 202110423509.7 (CN), filed on Apr. 20, 2021.
Prior Publication US 2023/0296372 A1, Sep. 21, 2023
Int. Cl. G06T 7/521 (2017.01); G01B 11/22 (2006.01); G02F 1/1362 (2006.01); G06T 11/00 (2006.01); H01S 5/183 (2006.01); H04N 23/13 (2023.01)
CPC G01B 11/22 (2013.01) [G02F 1/136277 (2013.01); G06T 7/521 (2017.01); G06T 11/003 (2013.01); H01S 5/18355 (2013.01); H04N 23/13 (2023.01); G06T 2207/20221 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A depth data measuring device comprising:
a projection unit configured to project a set of structured light with different patterns to a subject in a shooting area, the set of structured light includes at least two structured light with different patterns
one or two image sensors configured for depth imaging, and each image sensor among the one or two image sensors is configured to photograph the subject and output a set of image frames illuminated by the set of structured light for a single depth data calculation of the shooting area,
wherein the projection unit comprises:
a laser configured to generate laser light;
a LCOS (Liquid Crystal on Silicon) element configured to receive the generated laser light and generate the set of structured light,
wherein each image sensor among the one or two image sensors comprises at least two sub-image sensors sharing at least part of an optical path, and the at least two sub-image sensors are configured to respectively image different patterns of structured light successively projected by the projection unit.