公开(公告)号：US20240175996A1

公开(公告)日：2024-05-30

申请号：US18070177

申请日：2022-11-28

Applicant: Luminar Technologies, Inc.

Inventor： Joseph G. LaChapelle ,  Zachary Ronald Dylan Thomas Bush ,  Christopher Gary Sentelle

IPC: G01S7/4865 ,  G01S7/481 ,  G01S17/89 ,  G01S17/931

CPC classification number: G01S7/4865 ,  G01S7/4814 ,  G01S7/4817 ,  G01S17/89 ,  G01S17/931

Abstract: A system includes one or more light sources configured to transmit at least a first light pulse encoding and a second light pulse encoding. The system also includes one or more detectors configured to detect a received light signal. The system further includes one or more processors configured to: determine a derivative data of the detected received light signal including by computing a derivative based on the detected received light signal, correlate the derivative data with at least a first reference data corresponding to the first light pulse encoding and a second reference data corresponding to the second light pulse encoding to determine a correlation result, and use the correlation result to identify which transmitted light pulse encoding corresponds to the received light signal.

公开(公告)号：US11971484B2

公开(公告)日：2024-04-30

申请号：US17896603

申请日：2022-08-26

Applicant: Luminar Technologies, Inc.

Inventor： David L. Paulsen ,  Christopher Gary Sentelle ,  Zachary Heylmun ,  Matthew Hansen

IPC: G01S17/10 ,  G01S7/48 ,  G01S7/481 ,  G01S7/486 ,  G01S7/4861 ,  G01S17/89

CPC classification number: G01S17/10 ,  G01S7/4808 ,  G01S7/481 ,  G01S7/486 ,  G01S7/4861 ,  G01S17/89

Abstract: In one embodiment, a lidar system includes a light source configured to emit optical pulses using multiple pulse intervals (PIs) that include a first PI and a second PI, where the first PI and the second PI are not equal. The lidar system also includes a receiver configured to detect multiple input optical pulses. The lidar system further includes a processor configured to generate multiple pixels, where each pixel of the multiple pixels corresponds to one of the multiple input optical pulses and is associated with one of the PIs. The processor is further configured to (i) determine, for a particular pixel of the multiple pixels, a group of nearby pixels and (ii) determine whether the particular pixel is range-wrapped based at least in part on the PI associated with each pixel of the group of nearby pixels.

公开(公告)号：US20240053457A1

公开(公告)日：2024-02-15

申请号：US18491935

申请日：2023-10-23

Applicant: Luminar Technologies, Inc.

Inventor： Austin K. Russell ,  Jason M. Eichenholz ,  Laurance S. Lingvay

IPC: G01S7/497 ,  G01S17/58 ,  G01S7/486 ,  G01S7/484

CPC classification number: G01S7/497 ,  G01S17/58 ,  G01S7/4868 ,  G01S7/484 ,  G01S7/4804

Abstract: To dynamically control power in a lidar system, a controller identifies a triggering event and provides a control signal to a light source in the lidar system adjusting the power of light pulses emitted by the light source. The triggering event includes identifying a particular type of object within a threshold distance of the lidar system. In some scenarios, the power is adjusted to address eye-safety concerns.

公开(公告)号：US11714277B2

公开(公告)日：2023-08-01

申请号：US17017503

申请日：2020-09-10

Applicant: Luminar Technologies, Inc.

Inventor： Daniel Aaron Mohr ,  Kevin A. Gomez

IPC: G02B26/10 ,  G02B5/09 ,  G02B26/12 ,  G01S7/481

CPC classification number: G02B26/101 ,  G01S7/4817 ,  G02B5/09 ,  G02B26/124

Abstract: Implementations described and claimed herein provide a mechanically-scanning 3-dimensional light detection and ranging (3D LiDAR) system including a galvo mirror assembly, wherein the galvo mirror assembly includes a mirror attached to an armature of a galvanometer to reflect a light signal generated by a light generator and received from a target, at least one permanent magnet, and at least one coil configured to carry a current to move the armature.

公开(公告)号：US20200296310A1

公开(公告)日：2020-09-17

申请号：US16353366

申请日：2019-03-14

Applicant: Luminar Technologies, Inc.

Inventor： Richmond Hicks

IPC: H04N5/369 ,  G06T5/40 ,  G06T5/00

Abstract: The bit depth of the pixels in a camera image are reduced. In one embodiment, the number of pixels for each of a set of multiple bit intensity values is counted. A pixel intensity value with a lowest count is selected and a mapping function is generated that combines the pixels with the lowest count with pixels having an adjacent pixel intensity value. This is repeated until a total number of pixel intensity value counts is reduced to a predetermined number. A reduced bit depth image is generated using the predetermined number of pixel intensity value counts by assigning a new pixel intensity value to each of the pixels using the mapping function and the reduced bit depth image is sent to an image analysis system.

公开(公告)号：US20200284908A1

公开(公告)日：2020-09-10

申请号：US16456504

申请日：2019-06-28

Applicant: Luminar Technologies, Inc.

Inventor： David L. Paulsen

IPC: G01S17/10 ,  G01S7/48 ,  G01S7/486

Abstract: In one embodiment, a lidar system includes a light source configured to emit multiple optical signals directed into a field of regard of the lidar system. The optical signals include: a first optical signal; a second optical signal emitted a first time period τ1 after the first optical signal; and a third optical signal emitted a second time period τ2 after the second optical signal, where τ2 is different from τ1. The lidar system also includes a receiver configured to detect a first input optical signal and a second input optical signal. The first and second input optical signals each include light from one of the emitted optical signals that is scattered by a target located a distance from the lidar system.

公开(公告)号：US20200256960A1

公开(公告)日：2020-08-13

申请号：US16788762

申请日：2020-02-12

Applicant: Luminar Technologies, Inc.

Inventor： Joseph G. LaChapelle ,  Philip W. Smith ,  Matthew D. Weed ,  Jason M. Eichenholz

IPC: G01S7/481 ,  G01S7/4863

Abstract: In one embodiment, a lidar system includes a light source configured to emit a pulse of light and a scanner configured to direct the emitted pulse of light into a field of regard of the lidar system. The lidar system also includes a receiver configured to receive a portion of the emitted pulse of light scattered by a target located a distance from the lidar system. The receiver includes a digital micromirror device (DMD) that includes a two-dimensional array of electrically addressable micromirrors, where a portion of the micromirrors are configured to be set to an active-on state to direct the received pulse of light to a detector array. The detector array includes a two-dimensional array of detector elements, where the detector array is configured to detect the received pulse of light and produce an electrical signal corresponding to the received pulse of light.

公开(公告)号：US10684360B2

公开(公告)日：2020-06-16

申请号：US15713192

申请日：2017-09-22

Applicant: LUMINAR TECHNOLOGIES, INC.

Inventor： Scott R. Campbell

IPC: G01C3/08 ,  G01S7/486 ,  G01S17/10 ,  G01S7/481 ,  G01S17/42 ,  G01S17/931

Abstract: A lidar system includes a light source configured to emit pulses of light, a scanner configured to direct the pulses of light along a scan direction, and a receiver with a detector configured to detect the pulses of light scattered by remote targets. For a pulse of light emitted by the light source, the receiver is configured to detect the scattered pulse of light returning to the receiver during a ranging time interval between (i) when the pulse of light leaves the lidar system and (ii) when the scattered pulse of light returns from a remote target positioned at a maximum distance RMAX. For at least a portion of the ranging time interval, the lidar system directs the scattered pulse of light toward the active region of the detector at an oblique angle to reduce an amount of light impinging on the active region.

公开(公告)号：US20200182968A1

公开(公告)日：2020-06-11

申请号：US16554709

申请日：2019-08-29

Applicant: Luminar Technologies, Inc.

Inventor： Stephen D. Gaalema ,  Mark A. Drummer ,  Stephen L. Mielke ,  Jason M. Eichenholz

IPC: G01S7/48 ,  G01S7/481

Abstract: In one embodiment, a lidar system includes a light source configured to emit multiple optical signals directed into a field of regard of the lidar system. The optical signals include a first optical signal and a second optical signal, where the second optical signal is emitted a particular time interval after the first optical signal is emitted. The lidar system also includes a receiver configured to detect a received optical signal that includes a portion of the emitted first or second optical signal that is scattered by a target located a distance from the lidar system. The received optical signal is detected after the second optical signal is emitted. The receiver includes a first detector configured to detect a first portion of the received optical signal and a second detector configured to detect a second portion of the received optical signal.

公开(公告)号：US10591600B2

公开(公告)日：2020-03-17

申请号：US15363726

申请日：2016-11-29

Applicant: Luminar Technologies, Inc.

Inventor： Alain Villeneuve ,  Jason M. Eichenholz

IPC: G01C3/08 ,  G01S17/14 ,  G01S17/42 ,  G01S7/481 ,  G01S7/484 ,  G01S7/4863 ,  G01S17/89 ,  G01S7/4861 ,  G01S17/26 ,  G01S17/931 ,  G01S17/08 ,  H01S3/067 ,  H01S3/08 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/11 ,  H01S5/40 ,  G01S7/4865 ,  G01S17/10 ,  G01S7/48 ,  G01S7/483 ,  G01S17/02 ,  H01S3/00 ,  G01S17/00 ,  G01S17/06 ,  G01S17/88 ,  G01S7/487 ,  H01S5/00 ,  H01S3/23 ,  H01S3/16 ,  G01S17/32

Abstract: In one embodiment, a lidar system includes a light source configured to emit pulses of light. The lidar system also includes multiple optical links and multiple sensor heads. Each optical link couples the light source to a corresponding sensor head, and each optical link is configured to convey at least a portion of the emitted pulses of light from the light source to the corresponding sensor head. Each sensor head includes a scanner configured to scan pulses of light across a field of regard of the sensor head, where the scanned pulses of light include the portion of the emitted pulses of light conveyed from the light source to the sensor head by the corresponding optical link. Each sensor head also includes a receiver configured to detect at least a portion of the scanned pulses of light scattered or reflected by a target located downrange from the sensor head.