公开(公告)号：US11965982B1

公开(公告)日：2024-04-23

申请号：US18484930

申请日：2023-10-11

Applicant: Aurora Operations, Inc.

Inventor： Swarnav Banik ,  Andrew Steil Michaels ,  Phillip Sandborn

IPC: G01S7/48 ,  B60W60/00 ,  G01S7/481 ,  G01S17/931

CPC classification number: G01S7/4815 ,  B60W60/00 ,  G01S17/931 ,  B60W2420/52

Abstract: A LIDAR sensor system for a vehicle can include a light source configured to generate a beam; at least one optical amplifier configured to amplify the beam to produce an amplified beam; an optical power distribution network; a transmitter configured to receive the plurality of distributed beams; and one or more optics configured to emit the plurality of distributed beams. The optical power distribution network can include at least one input port configured to receive the amplified beam; one or more optical splitters configured to split the amplified beam into a plurality of distributed beams; a plurality of output ports respectively configured to provide the plurality of distributed beams; and one or more optical isolators configured to attenuate reflected signals at the plurality of output ports by coherently interfering the reflected signals.

公开(公告)号：US12099120B2

公开(公告)日：2024-09-24

申请号：US17054242

申请日：2019-05-10

Applicant: Aurora Operations, Inc.

Inventor： Phillip Sandborn ,  Sen Lin

IPC: G01S17/58 ,  G01S7/481 ,  G01S7/491 ,  G01S17/34 ,  G01S17/95

CPC classification number: G01S17/34 ,  G01S7/4817 ,  G01S7/491 ,  G01S17/58 ,  G01S17/95 ,  G01S7/4815

Abstract: A LIDAR system and method for determining a distance and a velocity of a target. The LIDAR system can include laser bank (62) is configured to generate a laser field from a first laser beam having a positive frequency sweep and a second laser beam having a negative frequency sweep, an optical combiner (65), an optical coupler (63), a photoreceiver (66), and a control circuit (69). The optical coupler direct a first portion of the laser field at the target such that the first portion is reflected by the target to the optical combiner. The optical combiner can optically combine the portions of the laser field. The output an 1-output (67) and a Q-output (68) according to the optically combined portions of the laser field. The control circuit can determine a nominal beat frequency, which corresponds to the distance of the target, and a frequency shift, which corresponds to the velocity of the target, accordingly.

公开(公告)号：US12210099B2

公开(公告)日：2025-01-28

申请号：US17054250

申请日：2019-05-10

Applicant: Aurora Operations, Inc.

Inventor： Phillip Sandborn ,  Sen Lin ,  James Ferrara

IPC: G01S17/34 ,  G01S7/481 ,  G01S7/491 ,  G01S17/58 ,  G01S17/95

Abstract: A FMCW LIDAR system for simultaneous beam scanning of the target environment. The system can include a photonics assembly couplable to a beam steering module. The photonics assembly is configured to receive a frequency modulated laser beam and can include an optical splitter and a coherent receiver. The optical splitter can be configured to optically split the frequency modulated laser beam into a local laser beam and a target laser beam, deliver the target laser beam to the beam steering module, and receive the target laser beam reflected by a target from the beam steering module. The coherent receiver can be configured to mix the local laser beam and the target laser beam to produce an output signal.