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公开(公告)号：US10254762B2
公开(公告)日：2019-04-09
申请号：US15915902
申请日：2018-03-08
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： John E. McWhirter , Jason M. Eichenholz , Austin K. Russell
IPC: G05D1/00 , G05D1/02 , G01S17/02 , G01S17/10 , G01S17/42 , G01S17/87 , G01S17/89 , G01S17/93 , G01S7/481 , G01S7/484 , G01S7/486 , G01S7/497
Abstract: To compensate for the effects of vibration on a lidar system in a vehicle, a vibration sensor within the lidar system and/or the vehicle detects vibration, such as a gyroscope, accelerometer, inertial measurement unit (IMU), etc. The detected vibration is then used to generate a compensation signal. The compensation signal is combined with a drive signal that drives a scanner configured to direct light pulses across a field of regard. The combined signal is provided to the scanner, and accordingly, the light pulses are accurately directed across the field of regard.
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公开(公告)号：US20190079167A1
公开(公告)日：2019-03-14
申请号：US16185427
申请日：2018-11-09
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Stephen D. Gaalema , Austin K. Russell , Joseph G. LaChapelle , Scott R. Campbell , Jason M. Eichenholz , Tue Tran
Abstract: To decrease the likelihood of a false detection when detecting light from light pulses scattered by remote targets in a lidar system, a receiver in the lidar system includes a photodetector and a pulse-detection circuit having a gain circuit with a varying amount of gain over time. The gain circuit operates in a low-gain mode for a time period T1 beginning with time t0 when a light pulse is emitted to prevent the receiver from detecting return light pulses during the threshold time period T1. Upon expiration of the threshold time period T1, the gain circuit operates in a high-gain mode to begin detecting return light pulses until a subsequent light pulse is emitted.
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Patent Agency Ranking
公开(公告)号：US20190064331A1
公开(公告)日：2019-02-28
申请号：US16170601
申请日：2018-10-25
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Austin K. Russell , Jason M. Eichenholz , Laurance S. Lingvay
IPC: G01S7/497
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 provided by the light pulse. Triggering events may include exceeding a threshold speed, being within a threshold distance of a person or other object, an atmospheric condition, etc. In some scenarios, the power is adjusted to address eye-safety concerns.
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公开(公告)号：US20180284780A1
公开(公告)日：2018-10-04
申请号：US15915902
申请日：2018-03-08
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： John E. McWhirter , Jason M. Eichenholz , Austin K. Russell
CPC classification number: G05D1/024 , G01S7/4812 , G01S7/4816 , G01S7/4817 , G01S7/484 , G01S7/4861 , G01S7/497 , G01S17/023 , G01S17/10 , G01S17/42 , G01S17/87 , G01S17/89 , G01S17/936 , G05D1/0088 , G05D1/0214 , G05D2201/0212
Abstract: To compensate for the effects of vibration on a lidar system in a vehicle, a vibration sensor within the lidar system and/or the vehicle detects vibration, such as a gyroscope, accelerometer, inertial measurement unit (IMU), etc. The detected vibration is then used to generate a compensation signal. The compensation signal is combined with a drive signal that drives a scanner configured to direct light pulses across a field of regard. The combined signal is provided to the scanner, and accordingly, the light pulses are accurately directed across the field of regard.
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公开(公告)号：US10012732B2
公开(公告)日：2018-07-03
申请号：US15859170
申请日：2017-12-29
Applicant: Luminar Technologies, Inc.
Inventor： Jason M. Eichenholz , Austin K. Russell , Scott R. Campbell , Alain Villeneuve , Rodger W. Cleye , Joseph G. LaChapelle , Matthew D. Weed , Lane A. Martin
CPC classification number: G01S17/105 , G01S7/4804 , G01S7/4811 , G01S7/4814 , G01S7/4815 , G01S7/4816 , G01S7/4817 , G01S7/4818 , G01S7/483 , G01S7/484 , G01S7/4861 , G01S7/4863 , G01S7/4865 , G01S7/4873 , G01S7/4876 , G01S17/00 , G01S17/02 , G01S17/06 , G01S17/08 , G01S17/10 , G01S17/102 , G01S17/32 , G01S17/42 , G01S17/88 , G01S17/89 , G01S17/936 , H01S3/0007 , H01S3/0078 , H01S3/0085 , H01S3/06733 , H01S3/0675 , H01S3/06754 , H01S3/06758 , H01S3/08086 , H01S3/094003 , H01S3/094042 , H01S3/094076 , H01S3/0941 , H01S3/10023 , H01S3/1106 , H01S3/1608 , H01S3/2383 , H01S5/0057 , H01S5/0085 , H01S5/4012 , H01S5/4087 , H01S2301/02
Abstract: A lidar system with a pulsed laser diode to produce a plurality of optical seed pulses of light at one or more operating wavelengths between approximately 1400 nm and approximately 1600 nm. The lidar system may also include one or more optical amplifiers to amplify the optical seed pulses to produce a plurality of output optical pulses. Each optical amplifier may produce an amount of amplified spontaneous emission (ASE), and the output optical pulses may have characteristics comprising: a pulse repetition frequency of less than or equal to 100 MHz; a pulse duration of less than or equal to 20 nanoseconds; and a duty cycle of less than or equal to 1%. The lidar system may also include one or more optical filters to attenuate the ASE and a receiver to detect at least a portion of the output optical pulses scattered by a target located a distance.
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公开(公告)号：US09958545B2
公开(公告)日：2018-05-01
申请号：US15818501
申请日：2017-11-20
Applicant: Luminar Technologies, Inc.
Inventor： Jason M. Eichenholz , Austin K. Russell , Scott R. Campbell , Alain Villeneuve , Rodger W. Cleye , Joseph G. LaChapelle , Matthew D. Weed , Lane A. Martin
CPC classification number: G01S17/06 , G01S7/4804 , G01S7/4811 , G01S7/4814 , G01S7/4815 , G01S7/4816 , G01S7/4817 , G01S7/4818 , G01S7/483 , G01S7/484 , G01S7/4861 , G01S7/4863 , G01S7/4865 , G01S17/00 , G01S17/02 , G01S17/08 , G01S17/10 , G01S17/32 , G01S17/42 , G01S17/88 , G01S17/89 , G01S17/936 , H01S3/0007 , H01S3/0078 , H01S3/0085 , H01S3/06733 , H01S3/0675 , H01S3/06754 , H01S3/06758 , H01S3/08086 , H01S3/094003 , H01S3/094042 , H01S3/094076 , H01S3/0941 , H01S3/10023 , H01S3/1106 , H01S3/1608 , H01S3/2383 , H01S5/0057 , H01S5/0085 , H01S5/4012 , H01S5/4087 , H01S2301/02
Abstract: A lidar system with a light source to emit a pulse of light and a receiver to detect a return pulse of light. The receiver can include a first channel to receive a first portion of the return pulse and produce a first digital output signal, and a second channel to receive a second portion of the return pulse and produce a second digital output signal. The receiver can include a logic circuit to produce an output electrical-edge signal in response to receiving the digital output signals. The receiver can also include a time-to-digital converter to determine a time interval based on an emission time of the pulse of light and based on the electrical-edge signal. The lidar system can also include a processor to determine a distance to a target based at least in part on the time interval.
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公开(公告)号：US20180024241A1
公开(公告)日：2018-01-25
申请号：US15470708
申请日：2017-03-27
Applicant: Luminar Technologies, Inc.
Inventor： Jason M. Eichenholz , Austin K. Russell , Scott R. Campbell , Alain Villeneuve , Rodger W. Cleye , Joseph G. LaChapelle , Matthew D. Weed , Lane A. Martin
CPC classification number: G01S17/06 , G01S7/4804 , G01S7/4811 , G01S7/4814 , G01S7/4815 , G01S7/4816 , G01S7/4817 , G01S7/4818 , G01S7/483 , G01S7/484 , G01S7/4861 , G01S7/4863 , G01S7/4865 , G01S17/00 , G01S17/02 , G01S17/08 , G01S17/10 , G01S17/32 , G01S17/42 , G01S17/88 , G01S17/89 , G01S17/936 , H01S3/0007 , H01S3/0078 , H01S3/0085 , H01S3/06733 , H01S3/0675 , H01S3/06754 , H01S3/06758 , H01S3/08086 , H01S3/094003 , H01S3/094042 , H01S3/094076 , H01S3/0941 , H01S3/10023 , H01S3/1106 , H01S3/1608 , H01S3/2383 , H01S5/0057 , H01S5/0085 , H01S5/4012 , H01S5/4087 , H01S2301/02
Abstract: A lidar system with a pulsed laser diode configured to produce an optical seed pulse of light at an operating wavelength between approximately 1400 nm and approximately 1600 nm. The lidar system may also include an optical amplifier configured to amplify the optical seed pulse to produce an eye-safe output optical pulse that is emitted into a field of view. The optical amplifier may produce an amount of amplified spontaneous emission (ASE) associated with the output optical pulse. The lidar system may include an optical filter configured to filter the output optical pulse to reduce the associated ASE. The lidar system may also include a receiver configured to detect at least a portion of the output optical pulse reflected or scattered from the field of view.
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