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公开(公告)号：US12216208B2
公开(公告)日：2025-02-04
申请号：US17978520
申请日：2022-11-01
Applicant: Aeva, Inc.
Inventor： Oguzhan Avci , Omer P. Kocaoglu , Neal N. Oza , Keith Gagne , Behsan Behzadi , Mina Rezk
IPC: G01C3/08 , G01S7/4912 , G01S7/499 , G01S17/34
Abstract: Free-space optics for use in a light detection and ranging (LIDAR) apparatus include a polarization beam-splitter (PBS) to direct an optical beam in a first direction toward a target environment and to propagate a portion of the optical beam in a second direction for receipt by a photodetector (PD), a polarization wave plate (PWP) to convert the optical beam from a first polarization to a second polarization, and to convert the target return signal from a third polarization to a fourth polarization, and a lens system coupled between the PBS and the PWP to magnify the optical beam. The propagated portion of the optical beam comprises a local oscillator (LO) signal to mix with a target return signal to generate target information.
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公开(公告)号：US12164064B2
公开(公告)日：2024-12-10
申请号：US18301503
申请日：2023-04-17
Applicant: Aurora Operations, Inc.
Inventor： James Allen Haslim , Michael Bryan Borden
IPC: G01S7/499 , B60W30/09 , B60W30/095 , B60W60/00 , G01S7/481 , G01S17/931 , G02B6/27
Abstract: A LIDAR system includes a plurality of LIDAR units. Each of the LIDAR units includes a housing defining a cavity. Each of the LIDAR units further includes a plurality of emitters disposed within the cavity. Each of the plurality of emitters is configured to emit a laser beam. The LIDAR system includes a rotating mirror and a retarder. The retarder is configurable in at least a first mode and a second mode to control a polarization state of a plurality of laser beams emitted from each of the plurality of LIDAR units. The LIDAR system includes a polarizing beam splitter positioned relative to the retarder such that the polarizing beam splitter receives a plurality of laser beams exiting the retarder. The polarizing beam is configured to transmit or reflect the plurality of laser beams exiting the retarder based on the polarization state of the laser beams exiting the retarder.
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公开(公告)号：US20240329221A1
公开(公告)日：2024-10-03
申请号：US18618818
申请日：2024-03-27
Applicant: 3D at Depth, Inc.
Inventor： Carl W. Embry
CPC classification number: G01S7/499 , G02B27/283 , G02B27/286
Abstract: Described herein are methods and systems for remote, contactless, laser sensing through a LiDAR system having an improved monostatic optical configuration. The LiDAR system includes a beam splitter that co-aligns the transmit and receive beams with reduced loss to either the transmit or receive beam when compared to traditional methods. The polarizing beam splitter can include a beam splitting surface having a first zone that is polarization selective and a second zone that is not polarization selective. The light source of the LiDAR system is aligned to pass light having a first selected linear polarization to a scene via the first zone. Light received at the LiDAR system as a return signal is passed to a detector by both the first and second zones of the beam splitter. This can significantly reduce receive signal loss if the receiver aperture size is not large compared to the transmit aperture.
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公开(公告)号：US20240264292A1
公开(公告)日：2024-08-08
申请号：US18640437
申请日：2024-04-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Tonghui LIU , Menglin LI , Hongying WU
IPC: G01S7/499 , G01S7/481 , G01S7/4912 , G01S17/34
CPC classification number: G01S7/499 , G01S7/4812 , G01S7/4917 , G01S17/34
Abstract: A detection system includes a beam splitting module, a polarization module, and a frequency mixer. The beam splitting module is configured to perform beam splitting processing on an input signal light to obtain a first signal light and a second signal light. The polarization module is configured to: output a transmitted signal light obtained after at least first polarization processing is performed on the first signal light; and obtain a reflected signal light of the transmitted signal light, and output a third signal light obtained after at least second polarization processing is performed on the reflected signal light. The frequency mixer is configured to perform frequency mixing processing on the second signal light and the third signal light, or is configured to perform frequency mixing processing on the third signal light and a fourth signal light obtained after at least third polarization processing is performed on the second signal light.
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公开(公告)号：US20240230868A1
公开(公告)日：2024-07-11
申请号：US18615721
申请日：2024-03-25
Applicant: Aeva, Inc.
Inventor： Neal N. Oza , Omer P. Kocaoglu , Behsan Behzadi , Oguzhan Avci , Keith Gagne , Mina Rezk
Abstract: A method of operating a light detection and ranging (LIDAR) system is provided that includes combining a first optical beam and a second optical beam into a combined optical beam of co-propagating, cross-polarized light, and transforming a polarization state of the first optical beam and the second optical beam of the combined optical beam at a rate faster than a rate of data collection at a plurality of detectors configured to detect light reflected from a target.
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6.发明公开
公开(公告)号：US20240192343A1
公开(公告)日：2024-06-13
申请号：US18427016
申请日：2024-01-30
Applicant: Aurora Operations, Inc.
Inventor： Sen Lin , Andrew Steil Michaels
IPC: G01S7/499 , G01S7/481 , G01S7/4863 , G01S17/931
CPC classification number: G01S7/499 , G01S7/4816 , G01S7/4863 , G01S17/931
Abstract: A light detection and ranging (LIDAR) sensor system includes a dual-polarization optical antenna, a single-polarization optical antenna, a first receiver, and a second receiver. The dual-polarization optical antenna is configured to (i) emit a transmit beam with a first polarization orientation and (ii) and detect a return beam having a second polarization orientation. The single-polarization optical antenna is configured to detect the return beam having the second polarization orientation.
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公开(公告)号：US11977187B2
公开(公告)日：2024-05-07
申请号：US18077129
申请日：2022-12-07
Applicant: AEVA, INC.
Inventor： Keith Gagne , Adrian Cort , Oguzhan Avci , Kevin Pollock , Pierre Hicks , Mina Rezk , Behsan Behzadi , Gautam Prabhakar
IPC: G01S7/4912 , G01S7/481 , G01S7/499
CPC classification number: G01S7/4917 , G01S7/4817 , G01S7/499
Abstract: A LiDAR system includes an optical subsystem with an optical axis. The optical subsystem includes an optical source to emit an optical beam, a first optical lens to transmit the optical beam, an optical window to reflect a first portion of the optical beam to generate a LO signal, an optical scanner to transmit a second portion of the optical beam to a target to scan the target to generate a target return signal, where the LO signal is disposed to be decentered from the optical axis on a second optical lens in front of a photodetector (PD) to increase a percentage of an overlap of the LO signal and the target return signal on the PD.
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8.发明公开
公开(公告)号：US20240140440A1
公开(公告)日：2024-05-02
申请号：US18493261
申请日：2023-10-24
Applicant: FERRARI S.P.A.
Inventor： Giovanni SARTONI , Matteo MONTIROSI , Ugo SITTA
CPC classification number: B60W40/06 , B60W40/13 , G01J1/44 , G01S7/499 , G01S17/88 , B60W2420/52 , B60W2530/10 , B60W2555/20 , G01J2001/442 , G01J2001/4466
Abstract: A motor vehicle comprising a body defining a passenger compartment, a plurality of wheels; and a sensor designed to detect a parameter associated with a superficial condition of a road surface; the sensor comprises, in turn, an emitter configured to emit a first laser signal towards a road surface; and one or more single-photon avalanche diodes configured to detect a second laser signal corresponding to the reflection of the first laser signal against said road surface.
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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.
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公开(公告)号：US11867814B1
公开(公告)日：2024-01-09
申请号：US18076198
申请日：2022-12-06
Applicant: AEVA, INC.
Inventor： Eric Bohannon , Garret Phillips , Bryce Bradford
CPC classification number: G01S17/58 , G01S7/499 , H01C1/016 , H01C1/16 , H03B5/1228 , H03C3/0908
Abstract: A frequency modulated continuous wave (FMCW) light detection and ranging (LIDAR) system that includes an optical source to generate light at a target frequency. The system also includes a first transistor to transmit a modulation current through a modulation path that includes the optical source and a modulation resistor. The system also includes electro optical circuitry coupled to the first transistor to produce a phase locked loop. The system also includes a second transistor to transmit a bias current through a bias path that includes the optical source and is separate from the modulation path, wherein the bias path is separate from the modulation path.
