公开(公告)号：US20240004081A1

公开(公告)日：2024-01-04

申请号：US17809651

申请日：2022-06-29

Applicant: Waymo LLC

Inventor： Blaise Laurent Patrick Gassend

IPC: G01S17/931 ,  G01S7/481

CPC classification number: G01S17/931 ,  G01S7/4817 ,  B60W60/001

Abstract: The disclosed aspects and implementations enable efficient disambiguation of spurious internal reflections in sensing (lidar, radar, or sonar) devices from reflections off closely positioned objects by imparting a longitudinal motion to the sensing devices, or components of such devices. In one implementation, the disclosed techniques involve outputting a transmitted wave and receiving a reflected wave generated by the transmitted wave while imparting, to a transceiver, a velocity along a direction of the transmitted wave. The techniques further involve detecting a difference of a transmitted wave frequency and a reflected wave frequency and determining whether the reflected beam is reflected from a real object located in an outside environment or is caused by an internal reflection within the sensing device.

公开(公告)号：US20240094360A1

公开(公告)日：2024-03-21

申请号：US17947988

申请日：2022-09-19

Applicant: Waymo LLC

Inventor： Alexander Yukio Piggott ,  Jason Watson ,  Lin Liu ,  Blaise Laurent Patrick Gassend ,  Ralph Hamilton Shepard

IPC: G01S7/4914 ,  G01S7/481 ,  G01S7/4911 ,  G01S7/4912 ,  G01S7/499 ,  G01S17/58

CPC classification number: G01S7/4914 ,  G01S7/4817 ,  G01S7/4911 ,  G01S7/4917 ,  G01S7/499 ,  G01S17/58

Abstract: The subject matter of this specification can be implemented in, among other things, systems and methods of optical sensing for pixel multiplexing and polarized beam steering. Described, among other things, is a system that includes a light source configured to generate a light and one or more optical devices, integrated on a photonic integrated circuit, configured to impart modulation to the generated light and deliver the modulated light to an interface coupling device. The interface coupling device can include a plurality of interface couplers (ICs), each IC configured to scatter the modulated light in a direction that makes at least 5 degrees with an optical axis of lens configured to transmit the light scattered by each IC along a respective direction of a plurality of directions.