US 12,259,472 B2
LiDAR and mobile device
Lin Zhu, Shenzhen (CN); and Jing Wang, Shenzhen (CN)
Assigned to SUTENG INNOVATION TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed by SUTENG INNOVATION TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed on Nov. 21, 2023, as Appl. No. 18/516,926.
Claims priority of application No. 202211508889.5 (CN), filed on Nov. 29, 2022.
Prior Publication US 2024/0176021 A1, May 30, 2024
Int. Cl. G01S 17/32 (2020.01); G01S 7/48 (2006.01); G01S 7/481 (2006.01); G01S 7/484 (2006.01); G01S 7/486 (2020.01); G01S 17/58 (2006.01); G02B 6/10 (2006.01)
CPC G01S 17/32 (2013.01) [G01S 7/481 (2013.01); G02B 6/10 (2013.01); G01S 7/4808 (2013.01); G01S 7/484 (2013.01); G01S 7/486 (2013.01); G01S 17/58 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A LiDAR, comprising a lens and a photonic chip, wherein:
an optical axis of the lens extends along a first preset direction, wherein the lens is configured to receive an echo signal and to output the echo signal to the photonic chip, and the echo signal is formed after a detection signal emitted by the LiDAR is reflected or scattered by a target object;
the photonic chip and the lens are spaced apart along the first preset direction, and the photonic chip comprises a cladding layer embedded with two or more receiving waveguide core layers and an emission waveguide core layer, wherein
an end surface of the cladding layer closer to the lens forms a step-shaped surface;
the two or more receiving waveguide core layers and the emission waveguide core layer are located on the step-shaped surface;
each receiving waveguide core layer has a first end surface and a second end surface opposite to each other, wherein the first end surface is closer to the lens than the second end surface, and the first end surface is configured to receive the echo signal output by the lens;
the two or more receiving waveguide core layers are spaced apart from each other along a second preset direction, and the second preset direction intersects with the first preset direction;
the first end surface of at least one receiving waveguide core layer is spaced apart from a focal plane of the lens by a distance;
the emission waveguide core layer is configured to receive a detection signal generated by the LiDAR and to output the detection signal to outside of the photonic chip to detect the target object;
the emission waveguide core layer extends along the first preset direction;
the optical axis of the lens passes through the emission waveguide core layer; and
an end surface of the emission waveguide core layer that faces toward the lens overlaps with the focal plane of the lens and is not in a same plane with the first end surface of at least one receiving waveguide core layer.