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1. 发明申请

WO2022192199A1 HYBRID PULSED/COHERENT LIDAR SYSTEM 审中-公开
公开(公告)号：WO2022192199A1
公开(公告)日：2022-09-15
申请号：PCT/US2022/019268
申请日：2022-03-08
申请人： LUMINAR, LLC
发明人： LACHAPELLE, Joseph G. , EICHENHOLZ, Jason M. , SINCORE, Alex Michael
IPC分类号： G01S7/4912 , G01S17/10 , H01S5/062 , H01S5/50 , G01S7/481 , G01S17/32 , H01S5/0625 , G01S17/89
摘要： 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 temporal 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 a portion of one of the emitted pulses of light scattered by a target located a distance from the lidar system. The receiver includes a detector configured to produce a photocurrent signal corresponding to the local-oscillator light and the received pulse of light. The photocurrent signal includes a sum of a first term, a second term, and a third term.

2. 发明申请

WO2022240554A2 COHERENT PULSED LIDAR SYSTEM WITH TWO-SIDED DETECTOR 审中-公开
公开(公告)号：WO2022240554A2
公开(公告)日：2022-11-17
申请号：PCT/US2022/025328
申请日：2022-04-19
申请人： LUMINAR, LLC
发明人： SHAH, Lawrence , SINCORE, Alex Michael , CANNON, Roger S. , LACHAPELLE, Joseph G. , GAALEMA, Stephen D. , EICHENHOLZ, Jason M.
IPC分类号： G01S7/481 , G01S7/484 , G01S7/4863 , G01S7/4865 , G01S17/10 , G01S17/894 , H01L31/105 , H01L31/107 , H01L31/109 , B62D15/02 , B62D15/025 , G01S17/26 , G01S7/4817 , G01S7/4818
摘要： In one embodiment, a lidar system includes a light source configured to emit (i) local-oscillator light and (ii) 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 a portion of one of the emitted pulses of light scattered by a target located a distance from the lidar system. The receiver includes a detector configured to produce a photocurrent signal corresponding to a coherent mixing of the local-oscillator light and the received pulse of light. The detector includes a first input side and a second input side located opposite the first input side, where the received pulse of light is incident on the first input side of the detector, and the local-oscillator light is incident on the second input side of the detector.

3. 发明申请

WO2022066481A1 LIDAR SYSTEM WITH LOW-NOISE AVALANCHE PHOTODIODE 审中-公开
公开(公告)号：WO2022066481A1
公开(公告)日：2022-03-31
申请号：PCT/US2021/050448
申请日：2021-09-15
申请人： LUMINAR, LLC
发明人： GATES, James L. , LACHAPELLE, Joseph G. , EICHENHOLZ, Jason M. , GAALEMA, Stephen D.
IPC分类号： G01S17/931 , G05D1/00 , G01S7/486
摘要： A lidar system includes a light source to emit an optical signal and a receiver to detect an input optical signal (135) that includes a portion of the emitted optical signal scattered by a target located a distance from the lidar system. The receiver includes an avalanche photodiode (APD 400) to receive the input optical signal (135) and produce a photocurrent signal corresponding to the input optical signal. The APD (400) includes a multiplication region (450) that includes a digital- alloy region that includes two or more semiconductor alloy materials arranged in successive layers. The digital-alloy region produces at least a portion of the photocurrent signal by impact ionization. The receiver determines, based on the photocurrent signal produced by the APD (400), a round-trip time for the portion of the emitted optical signal to travel to the target and back to the lidar system. A digital alloy may include three components (ternary digital alloy) or four components (quaternary digital alloy), two or more semiconductor alloy materials being arranged in successive layers in a repeating or non-repeating pattern. The APD (400) may comprise an absorption region (430) to absorb at least a portion of the input optical signal (135) and produce electronic carriers corresponding to the absorbed portion thereof. The multiplication region (450) receives a portion of photogenerated electronic carriers produced in the absorption region (430). As a result, the APD (400) may operate with a lower excess noise factor or with a higher gain.

4. 发明申请

WO2022035549A1 LIDAR SYSTEM WITH INPUT OPTICAL ELEMENT 审中-公开
公开(公告)号：WO2022035549A1
公开(公告)日：2022-02-17
申请号：PCT/US2021/041784
申请日：2021-07-15
申请人： LUMINAR, LLC
发明人： LACHAPELLE, Joseph G. , EICHENHOLZ, Jason M. , SINCORE, Alex Michael , SHAH, Lawrence
IPC分类号： G01S7/481 , G01S7/4912 , G01S17/34
摘要： In one embodiment, a lidar system includes a light source configured to emit an optical signal and a receiver that includes one or more detectors configured to detect a portion of the emitted optical signal scattered by a target located a distance from the lidar system. The lidar system also includes a photonic integrated circuit (PIC) that includes an input optical element configured to receive the portion of the scattered optical signal and couple the portion of the scattered optical signal into an input optical waveguide. The input optical waveguide is one of one or more optical waveguides of the PIC configured to convey the portion of the scattered optical signal to the one or more detectors of the receiver. The lidar system further includes a processor configured to determine the distance from the lidar system to the target.

5. 发明申请

WO2023059850A1 LIDAR SYSTEM WITH SPECTRALLY ENCODED LIGHT PULSES 审中-公开
公开(公告)号：WO2023059850A1
公开(公告)日：2023-04-13
申请号：PCT/US2022/045984
申请日：2022-10-07
申请人： LUMINAR, LLC
发明人： SHAH, Lawrence , BUSH, Zachary Ronald Dylan Thomas , SOTO, Elias , SINCORE, Alex Michael , LACHAPELLE, Joseph G. , GAALEMA, Stephen D. , EICHENHOLZ, Jason M.
IPC分类号： G01S7/481 , G01S7/484 , G01S7/4865 , G01S7/487 , G01S17/26 , G01S7/48 , G01S17/10 , G01S17/931 , G01S7/4802 , G01S7/4812 , G01S7/4814 , G01S7/4816 , G01S7/4817 , G01S7/4818 , G01S7/4873
摘要： In one embodiment, a lidar system includes a light source configured to emit pulses of light, where each emitted pulse of light includes a spectral signature of multiple different spectral signatures. The lidar system also includes a receiver configured to detect 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 emitted pulse of light includes one of the spectral signatures. The receiver includes a detector configured to produce a photocurrent signal corresponding to the received pulse of light, a frequency-detection circuit configured to determine, based on the photocurrent signal, a spectral signature of the received pulse of light, and a pulse-detection circuit configured to determine, based on the photocurrent signal, a time-of-arrival of the received pulse of light.

6. 发明申请

WO2022173590A2 LIDAR SYSTEM WITH MULTI-JUNCTION LIGHT SOURCE 审中-公开
公开(公告)号：WO2022173590A2
公开(公告)日：2022-08-18
申请号：PCT/US2022/013825
申请日：2022-01-26
申请人： LUMINAR, LLC
发明人： LACHAPELLE, Joseph G. , EICHENHOLZ, Jason M. , CANNON, Roger S. , GAALEMA, Stephen D.
IPC分类号： G01S7/484 , H01S5/50 , H01S5/40 , G01S7/4911 , G01S7/481 , G01S17/10 , G01S7/4865 , H01S5/30 , H01S3/23 , H01S5/062 , G01S17/32 , G01S17/34 , G01S7/4815 , G01S7/4861 , H01S3/0064 , H01S3/0078 , H01S3/06754 , H01S3/2375 , H01S5/06216 , H01S5/0622 , H01S5/0687 , H01S5/1014 , H01S5/12 , H01S5/3095 , H01S5/4012 , H01S5/4018 , H01S5/4043
摘要： In one embodiment, a lidar system includes a multi-junction light source configured to emit an optical signal. The multi-junction light source includes a seed laser diode configured to produce a seed optical signal and a multi-junction semiconductor optical amplifier (SOA) configured to amplify the seed optical signal to produce the emitted optical signal. 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 based on a round-trip time for the portion of the scattered optical signal to travel from the lidar system to the target and back to the lidar system.

7. 发明申请

WO2021231559A1 LIDAR SYSTEM WITH HIGH-RESOLUTION SCAN PATTERN 审中-公开
公开(公告)号：WO2021231559A1
公开(公告)日：2021-11-18
申请号：PCT/US2021/031973
申请日：2021-05-12
申请人： LUMINAR, LLC
发明人： BURBANK, Istvan Peter , WEED, Matthew D. , WOJACK, Jason Paul , EICHENHOLZ, Jason M. , TROFYMOV, Dmytro
IPC分类号： G01S17/931 , B60W2420/52 , B60W30/09 , B60W30/14 , B60W60/001 , G01S17/10 , G01S17/34 , G01S17/89 , G01S7/4814 , G01S7/4817 , G01S7/484
摘要： In one embodiment, a lidar system includes a light source configured to emit pulses of light and a scanner configured to scan the emitted pulses of light along a high-resolution scan pattern located within a field of regard of the lidar system. The scanner includes one or more scan mirrors configured to (i) scan the emitted pulses of light along a first scan axis to produce multiple scan lines of the high-resolution scan pattern, where each scan line is associated with multiple pixels, each pixel corresponding to one of the emitted pulses of light and (ii) distribute the scan lines of the high-resolution scan pattern along a second scan axis. The high-resolution scan pattern includes one or more of: interlaced scan lines and interlaced pixels.

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