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公开(公告)号：US20180299534A1
公开(公告)日：2018-10-18
申请号：US15954427
申请日：2018-04-16
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Joseph G. LaChapelle , Jason M. Eichenholz
Abstract: A system includes a lidar, a camera, and a controller communicatively coupled to the camera and the lidar. The lidar includes a laser configured to emit pulses of light, a scanner configured to direct the emitted pulses in accordance with a scan pattern, and a receiver configured to detect the emitted pulse of light scattered by one or more remote targets to collect a set of lidar pixels of a scan frame, in a sequence defined by the scan pattern. The camera has a field of regard that at least partially overlaps the field of regard of the lidar. The controller is configured to cause the camera to capture images while the receiver of the lidar module collects the complete set of lidar pixels of the scan frame, and align lidar pixels with corresponding pixels in the captured images.
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公开(公告)号：US20180284277A1
公开(公告)日：2018-10-04
申请号：US15843652
申请日：2017-12-15
Applicant: LUMINAR TECHNOLOGIES,INC.
Inventor： Joseph G. LaChapelle , Jason M. Eichenholz , Laurance S. Lingvay
CPC classification number: G01S17/102 , G01S7/4812 , G01S7/4814 , G01S7/4816 , G01S7/4817 , G01S7/484 , G01S7/4865 , G01S17/10 , G01S17/36 , G01S17/42 , G01S17/87 , G01S17/89 , G01S17/936
Abstract: A light source includes a laser configured to emit a ranging pulse including a sequence of fast pulses. A lidar system uses one or more properties of the sequence of fast pulses to determine a signature of the ranging pulse. A receiver includes a detector element configured to detect a light signal and a signature detection circuitry configured to determine whether the detected light signal corresponds to the signature of the emitted ranging pulse. The lidar system is configured to generate a pixel value based on the detected light signal if the detected light signal corresponds to the signature of the emitted ranging pulse.
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公开(公告)号：US20180284268A1
公开(公告)日：2018-10-04
申请号：US15716008
申请日：2017-09-26
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： John E. McWhirter
Abstract: To clear the line-of-sight (LOS) on a window in a lidar system within a vehicle, ultrasonic transducers are physically attached to the interior surface of the window to remove debris. When debris is detected at the window, the ultrasonic transducers are directed to vibrate at an ultrasonic frequency thereby generating an ultrasonic wave which causes the debris to bounce off the window. In some scenarios, the ultrasonic transducers vibrate with a particular phase shift to generate a travelling wave that causes the debris to sweep across the window. Additionally, windshield wipers, spray from a nozzle, and/or a hydrophobic or oleophobic coating may be used in combination with the ultrasonic transducers to remove the debris from the window.
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公开(公告)号：US20180284231A1
公开(公告)日：2018-10-04
申请号：US15861147
申请日：2018-01-03
Applicant: Luminar Technologies, Inc.
Inventor： Austin K. Russell , Joseph G. LaChapelle , Scott R. Campbell , Jason M. Eichenholz
CPC classification number: G01S7/489 , G01S7/4863 , G01S7/4865 , G01S17/10
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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公开(公告)号：US20180284224A1
公开(公告)日：2018-10-04
申请号：US15876662
申请日：2018-01-22
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Matthew D. Weed , Scott R. Campbell , Lane A. Martin , Jason M. Eichenholz , Austin K. Russell
CPC classification number: G01S7/484 , G01S7/4817 , G01S7/497 , G01S17/10 , G01S17/42 , G01S17/936
Abstract: To compensate for the uneven distribution of data points around the periphery of a vehicle in a lidar system, a light source transmits light pulses at a variable pulse rate according to the orientation of the light pulses with respect to the lidar system. A controller may communicate with a scanner in the lidar system that provides the orientations of the light pulses to the controller. The controller may then provide a control signal to the light source adjusting the pulse rate based on the orientations of the light pulses. For example, the pulse rate may be slower near the front of the lidar system and faster near the periphery. In another example, the pulse rate may be faster near the front of the lidar system and slower near the periphery.
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Patent Agency Ranking
公开(公告)号：US10061019B1
公开(公告)日：2018-08-28
申请号：US15728950
申请日：2017-10-10
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Scott R. Campbell , Jason M. Eichenholz
CPC classification number: G01S7/4811 , G01S7/4814 , G01S7/4817 , G01S7/484 , G01S7/4865 , G01S17/10 , G01S17/42 , G01S17/936
Abstract: To detect return light pulses in a lidar system when scanning in the forward-scanning and reverse-scanning directions, a light source may transmit first light pulses having a first wavelength when scanning in the forward-scanning direction and may transmit second light pulses having a second wavelength when scanning in the reverse-scanning direction. A diffractive optical element (DOE) is configured to deflect the two wavelengths in opposite directions, so that light pulses are transmitted ahead of the field of view of the detector in the scanning direction of the lidar system. A controller may determine the scanning direction of a scanner in the lidar system and transmit a control signal to a light source indicative of a wavelength that corresponds to the scanning direction. The light source may then transmit light pulses at the requested wavelength.
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公开(公告)号：US10003168B1
公开(公告)日：2018-06-19
申请号：US15828236
申请日：2017-11-30
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Alain Villeneuve
IPC: H01S3/09 , H01S3/094 , G01S7/486 , G01S17/10 , H01S3/067 , H01S3/00 , H01S3/08 , G02B27/09 , H01S5/00 , G01S7/48
CPC classification number: H01S3/094053 , G01S7/4804 , G01S7/4815 , G01S7/4818 , G01S7/484 , G01S7/4865 , G01S7/497 , G01S17/10 , G01S17/42 , G01S17/936 , G02B26/101 , G02B27/0927 , G02B27/10 , H01S3/005 , H01S3/0064 , H01S3/0078 , H01S3/067 , H01S3/06733 , H01S3/06758 , H01S3/08077 , H01S3/094003 , H01S3/094007 , H01S3/094042 , H01S3/094096 , H01S3/09415 , H01S3/1301 , H01S3/1608 , H01S3/1618 , H01S3/2333 , H01S3/2375 , H01S5/0057 , H01S5/02469 , H01S5/0287 , H01S5/06216 , H01S5/0683 , H01S5/4012 , H01S5/4087
Abstract: In one embodiment, a laser system includes a seed laser diode configured to produce a free-space seed-laser beam and a seed-laser lens configured to collimate the seed-laser beam. The laser system also includes a pump laser diode configured to produce a free-space pump-laser beam and a pump-laser lens configured to collimate the pump-laser beam. The laser system further includes an optical-beam combiner configured to combine the collimated seed-laser and pump-laser beams into a combined free-space beam and a focusing lens configured to focus the combined beam. The laser system also includes an optical gain fiber that includes an input end configured to receive the focused beam. The laser system also includes a mounting platform, where one or more of the seed laser, the seed-laser lens, the pump laser, the pump-laser lens, the combiner, the focusing lens, and the input end of the gain fiber are mechanically attached to the platform.
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公开(公告)号：US09989629B1
公开(公告)日：2018-06-05
申请号：US15727315
申请日：2017-10-06
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Joseph G. LaChapelle
CPC classification number: G01S7/484 , G01S7/4816 , G01S7/4817 , G01S7/4865 , G01S17/936 , G05D1/0088 , G05D1/0238
Abstract: A lidar system includes a lighting module configured to (i) select a wavelength from among a plurality of wavelength values, for a particular time period, and (ii) emit light at the selected wavelength. The lighting module emits light at different wavelengths during at least two adjacent periods of time. The lidar system further includes a scanner configured to direct the pulse of light to illuminate a respective region within a field of regard of the lidar system and a receiver module configured to (i) receive a light signal and (ii) determine whether the received light signal includes the light emitted by the lighting module and scattered by a remote target, based at least in part on the wavelength selected by the lighting module.
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公开(公告)号：US09812838B2
公开(公告)日：2017-11-07
申请号：US15470694
申请日：2017-03-27
Applicant: Luminar Technologies, Inc.
Inventor： Alain Villeneuve , Jason M. Eichenholz
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 seed laser to produce seed pulses with wavelengths between approximately 1400 nm and 2050 nm. A first amplifier amplifies the seed pulses to produce amplified seed pulses and amplified spontaneous emission (ASE). An optical filter removes at least a portion of the ASE. A second amplifier amplifies the seed pulses to produce output pulses having a repetition frequency less than or equal to 100 MHz, a duration less than or equal to 20 nanoseconds, a duty cycle less than or equal to 1%, an energy greater than or equal to 10 nanojoules, a peak power greater than or equal to 1 watt, and an average power less than or equal to 50 watts, the ASE comprising less than or equal to 25% of the average power. A sensor head directs the output pulses into a field of view and detects reflected light therefrom.
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公开(公告)号：US20170201059A1
公开(公告)日：2017-07-13
申请号：US15470694
申请日：2017-03-27
Applicant: Luminar Technologies, Inc.
Inventor： Alain Villeneuve , Jason M. Eichenholz
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 seed laser to produce seed pulses with wavelengths between approximately 1400 nm and 2050 nm. A first amplifier amplifies the seed pulses to produce amplified seed pulses and amplified spontaneous emission (ASE). An optical filter removes at least a portion of the ASE. A second amplifier amplifies the seed pulses to produce output pulses having a repetition frequency less than or equal to 100 MHz, a duration less than or equal to 20 nanoseconds, a duty cycle less than or equal to 1%, an energy greater than or equal to 10 nanojoules, a peak power greater than or equal to 1 watt, and an average power less than or equal to 50 watts, the ASE comprising less than or equal to 25% of the average power. A sensor head directs the output pulses into a field of view and detects reflected light therefrom.
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