公开(公告)号：US20210055391A1

公开(公告)日：2021-02-25

申请号：US16913093

申请日：2020-06-26

Applicant: Luminar Technologies, Inc.

Inventor： Joseph G. LaChapelle ,  Jason M. Eichenholz ,  Alex Michael Sincore

IPC: G01S7/4865 ,  G01S17/10 ,  G01S7/484 ,  G01S7/481

Abstract: In one embodiment, a lidar system includes a light source configured to emit local-oscillator light and pulses of light, where each emitted pulse of light is (i) coherent with a corresponding portion of the local-oscillator light and (ii) includes a spectral signature of one or more different spectral signatures. The lidar system also includes a receiver configured to detect the local-oscillator light and a received pulse of light, the received pulse of light including light from one of the emitted pulses of light scattered by a target located a distance from the lidar system, the one of the emitted pulses of light including a particular spectral signature of the one or more spectral signatures. The local-oscillator light and the received pulse of light are coherently mixed together at the receiver. The receiver includes one or more detectors and a frequency-detection circuit.

公开(公告)号：US10802120B1

公开(公告)日：2020-10-13

申请号：US16794439

申请日：2020-02-19

Applicant: Luminar Technologies, Inc.

Inventor： Joseph G. LaChapelle ,  Jason M. Eichenholz ,  Alex Michael Sincore

IPC: G01B5/02 ,  G01S7/4865 ,  G01S7/481 ,  G01S7/484 ,  G01S17/10

Abstract: In one embodiment, a lidar system includes a light source configured to emit (i) local-oscillator light and (ii) pulses of light, where each emitted pulse of light is coherent with a corresponding portion of the local-oscillator light. The lidar system also includes a receiver configured to detect the local-oscillator light and a received pulse of light, the received pulse of light comprising light from one of the emitted pulses of light that is scattered by a target located a distance from the lidar system. The local-oscillator light and the received pulse of light are coherently mixed together at the receiver. The receiver includes one or more detectors configured to produce one or more respective photocurrent signals corresponding to the coherent mixing of the local-oscillator light and the received pulse of light. The receiver also includes a pulse-detection circuit configured to determine a time-of-arrival for the received pulse of light.

公开(公告)号：US12228650B2

公开(公告)日：2025-02-18

申请号：US17183522

申请日：2021-02-24

Applicant: Luminar Technologies, Inc.

Inventor： Joseph G. LaChapelle ,  Jason M. Eichenholz ,  Alex Michael Sincore ,  Lawrence Shah

IPC: G01S17/93 ,  B60W60/00 ,  G01S7/481 ,  G01S7/484 ,  G01S7/486 ,  G01S7/4861 ,  G01S7/4865 ,  G01S17/10 ,  G01S17/26 ,  G01S17/88 ,  G01S17/931 ,  G02B6/12 ,  H01S5/026 ,  H01S5/065 ,  H01S5/125

Abstract: In one embodiment, a light source is configured to emit an optical signal. The light source includes a seed laser diode configured to produce a seed optical signal and a semiconductor optical amplifier (SOA) configured to amplify the seed optical signal to produce the emitted optical signal. The light source also includes an optical isolator disposed between the seed laser diode and the SOA, where the optical isolator is configured to (i) transmit the seed optical signal to the SOA and (ii) reduce an amount of light that propagates from the SOA toward the seed laser diode.

公开(公告)号：US11940565B2

公开(公告)日：2024-03-26

申请号：US16794500

申请日：2020-02-19

Applicant: Luminar Technologies, Inc.

Inventor： Joseph G. LaChapelle ,  Jason M. Eichenholz ,  Alex Michael Sincore

IPC: G01S7/4865 ,  G01S7/481 ,  G01S7/484 ,  G01S7/497 ,  G01S17/02 ,  G01S17/10 ,  G01S17/89

CPC classification number: G01S7/4865 ,  G01S7/4814 ,  G01S7/4818 ,  G01S7/484 ,  G01S17/10 ,  G01S17/89 ,  G01S7/4816 ,  G01S7/4817 ,  G01S7/497 ,  G01S17/02

Abstract: In one embodiment, a lidar system includes a light source configured to emit (i) local-oscillator light and (ii) pulses of light, where each emitted pulse of light is coherent with a corresponding portion of the local-oscillator light. The lidar system also includes a receiver configured to detect the local-oscillator light and a received pulse of light, the received pulse of light including light from one of the emitted pulses of light that is scattered by a target located a distance from the lidar system. The local-oscillator light and the received pulse of light are coherently mixed together at the receiver. The lidar system further includes a processor configured to determine the distance to the target based at least in part on a time-of-arrival for the received pulse of light.

公开(公告)号：US20210088657A1

公开(公告)日：2021-03-25

申请号：US17101146

申请日：2020-11-23

Applicant: Luminar Technologies, Inc.

Inventor： Lawrence Shah ,  Jason M. Eichenholz ,  Joseph G. LaChapelle ,  Alex Michael Sincore ,  Cheng Zhu

IPC: G01S17/00

Abstract: In one embodiment, a lidar system includes a light source configured to emit an optical signal. The light source includes a seed laser diode configured to produce a seed optical signal and a semiconductor optical amplifier (SOA) configured to amplify the seed optical signal to produce an amplified seed optical signal, where the emitted optical signal includes the amplified seed optical signal. The light source further includes an electronic driver configured to supply electrical current to the seed laser diode and electrical current to the SOA. The lidar system also includes a receiver configured to detect a portion of the emitted optical signal scattered by a target located a distance from the lidar system. The lidar system further includes a processor configured to determine the distance from the lidar system to the target.

公开(公告)号：US20210055390A1

公开(公告)日：2021-02-25

申请号：US16794500

申请日：2020-02-19

Applicant: Luminar Technologies, Inc.

Inventor： Joseph G. LaChapelle ,  Jason M. Eichenholz ,  Alex Michael Sincore

IPC: G01S7/4865 ,  G01S17/89

Abstract: In one embodiment, a lidar system includes a light source configured to emit (i) local-oscillator light and (ii) pulses of light, where each emitted pulse of light is coherent with a corresponding portion of the local-oscillator light. The lidar system also includes a receiver configured to detect the local-oscillator light and a received pulse of light, the received pulse of light including light from one of the emitted pulses of light that is scattered by a target located a distance from the lidar system. The local-oscillator light and the received pulse of light are coherently mixed together at the receiver. The lidar system further includes a processor configured to determine the distance to the target based at least in part on a time-of-arrival for the received pulse of light.

公开(公告)号：US20210055387A1

公开(公告)日：2021-02-25

申请号：US16794366

申请日：2020-02-19

Applicant: Luminar Technologies, Inc.

Inventor： Joseph G. LaChapelle ,  Jason M. Eichenholz ,  Alex Michael Sincore

IPC: G01S7/484 ,  G01S7/4865 ,  G01S7/481

Abstract: In one embodiment, a lidar system includes a light source configured to emit (i) local-oscillator light and (ii) pulses of light, where each emitted pulse of light is coherent with a corresponding portion of the local-oscillator light. The light source includes a seed laser configured to produce seed light and the local-oscillator light. The light source also includes a pulsed optical amplifier configured to amplify temporal portions of the seed light to produce the emitted pulses of light, where each amplified temporal portion of the seed light corresponds to one of the emitted pulses of light. The lidar system also includes a receiver configured to detect the local-oscillator light and a received pulse of light, the received pulse of light including light from one of the emitted pulses of light that is scattered by a target located a distance from the lidar system.