-
公开(公告)号：US20200256964A1
公开(公告)日：2020-08-13
申请号：US16861696
申请日：2020-04-29
Applicant: Luminar Technologies, Inc.
Inventor： Scott R. Campbell , Lane A. Martin , Matthew D. Weed , Jason M. Eichenholz
IPC: G01S7/4865 , G01S7/4861 , G01S17/10 , G01S7/486 , G01S17/42
Abstract: A lidar system includes a light source, a scanner, and a receiver and is configured to detect remote targets located up to RMAX meters away. The receiver includes a detector with a field of view larger than the light-source field of view. The scanner causes the detector field of view to move relative to the instantaneous light-source field of view along the scan direction, so that (i) when a pulse of light is emitted, the instantaneous light-source field of view is approximately centered within the detector field of view, and (ii) when a scattered pulse of light returns from a target located RMAX meters away, the instantaneous light-source field of view is located near an edge of the field of view of the detector and is contained within the field of view of the detector.
-
公开(公告)号：US10401481B2
公开(公告)日：2019-09-03
申请号：US15941677
申请日：2018-03-30
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Scott R. Campbell , Matthew D. Weed , Lane A. Martin , Jason M. Eichenholz
Abstract: A lidar system includes a light source configured to emit light, a scanner configured to scan a field of regard of the lidar system using (i) a first output beam that includes at least a portion of the emitted light and has a first amount of power and (ii) a second output beam that includes at least a portion of the emitted light and has a second amount of power different from the first amount of power, with an angular separation between the first output beam and the second output beam along a vertical dimension of the field of regard, and a receiver configured to detect light associated with the first output beam and light associated with the second output beam scattered by one or more remote targets.
-
公开(公告)号：US20190250254A1
公开(公告)日：2019-08-15
申请号：US16390923
申请日：2019-04-22
Applicant: Luminar Technologies, Inc.
Inventor： Scott R. Campbell , Rodger W. Cleye , Jason M. Eichenholz , Lane A. Martin , Matthew D. Weed
CPC classification number: G01S7/4815 , G01S7/4817 , G01S7/4865 , G01S17/10 , G01S17/42 , G01S17/87
Abstract: A system includes a first lidar sensor and a second lidar sensor, where each lidar sensor includes a scanner configured to direct a set of pulses of light along a scan pattern and a receiver configured to detect scattered light from the set of light pulses. The scan patterns are at least partially overlapped in an overlap region. The system further includes an enclosure, where the first lidar sensor and the second lidar sensor are contained within the enclosure. Each scanner includes one or more mirrors, and each mirror is driven by a scan mechanism.
-
公开(公告)号：US20190154802A1
公开(公告)日：2019-05-23
申请号：US15965288
申请日：2018-04-27
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Scott R. Campbell , Jason M. Eichenholz , Matthew D. Weed , Lane A. Martin
Abstract: A lidar system includes one or more light sources configured to generate a first and second beams of light, a scanner configured to synchronously scan a field of regard of the lidar system using the two beams, and a receiver configured to detect light of the two beams scattered by one or more remote targets. The scanner includes a rotatable polygon mirror having a block having a first wall, a second wall, and reflective surfaces extending between the first and second walls, the reflective surfaces being angularly offset from one another along a periphery of the block; a polygon mirror axle extending into the block, about which the block rotates; optical elements configured to direct the first and second beams of light respectively to two adjacent reflective surfaces of the rotatable polygon mirror; and a second mirror pivotable along an axis orthogonal to the polygon mirror axle.
-
公开(公告)号：US10254388B2
公开(公告)日：2019-04-09
申请号：US15909012
申请日：2018-03-01
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Joseph G. LaChapelle , Matthew D. Weed , Scott R. Campbell , Jason M. Eichenholz , Austin K. Russell , Lane A. Martin
IPC: G01C3/08 , G01S7/484 , G01W1/02 , G01S17/10 , G01S17/42 , G01S7/00 , G01S7/497 , G01S17/95 , G01S17/93 , G01S7/486
Abstract: To detect an atmospheric condition at the current location of a lidar system, a receiver in the lidar system detects a return light pulse scattered by a target and analyzes the characteristics of the return light pulse. The characteristics of the return light pulse include a rise time, a fall time, a duration, a peak power, an amount of energy, etc. When the rise time, fall time, and/or duration exceed respective thresholds, the lidar system detects the atmospheric condition such as fog, sleet, snow, rain, dust, smog, exhaust, or insects. In response to detecting the atmospheric condition, the lidar system adjusts the characteristics of subsequent pulses to compensate for attenuation or distortion of return light pulses due to the atmospheric condition. For example, the lidar system adjusts the peak power, pulse energy, pulse duration, inter-pulse-train spacing, number of pulses, or any other suitable characteristic.
-
Patent Agency Ranking
公开(公告)号：US20180364356A1
公开(公告)日：2018-12-20
申请号：US15364085
申请日：2016-11-29
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
Abstract: In one embodiment, a lidar system includes a light source configured to emit pulses of light and a scanner configured to scan at least a portion of the emitted pulses of light across a field of regard. The lidar system also includes a receiver configured to detect at least a portion of the scanned pulses of light scattered by a target located a distance from the lidar system.
-
公开(公告)号：US20180286909A1
公开(公告)日：2018-10-04
申请号：US15909563
申请日：2018-03-01
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Jason M. Eichenholz , Scott R. Campbell , Joseph G. LaChapelle
IPC: H01L27/146 , G01S7/481
CPC classification number: H01L27/14634 , G01S7/4816 , G01S17/936 , H01L24/49 , H01L2224/73253 , H01L2224/73265 , H01L2924/1433
Abstract: To detect light from light pulses at the operating wavelength of a light source in a lidar system, a thin-film notch filter is directly deposited on a photodetector or a lens via vacuum deposition or monolithic epoxy. The thin-film notch filter may include an anti-reflective coating such as a pattern-coated dichroic filter having an optical transmission of 90% or greater at in-band wavelengths and less than 5% at out-of-band wavelengths. To deposit the filter onto the photodetector without disrupting electronic connections between the photodetector and an application-specific integrated circuit, the area surrounding the electrodes on the photodetector is kept open using photolithography.
-
公开(公告)号：US20180284279A1
公开(公告)日：2018-10-04
申请号：US15917628
申请日：2018-03-10
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Scott R. Campbell , Joseph G. LaChapelle , Jason M. Eichenholz , Austin K. Russell
Abstract: A lidar system includes a transmitter that encodes successive transmit pulses with different pulse characteristics and a receiver that detects the pulse characteristics of each received (scattered or reflected) pulse and that distinguishes between the received pulses based on the detected pulse characteristics. The lidar system thus resolves range ambiguities by encoding pulses of scan positions in the same or different scan periods to have different pulse characteristics, such as different pulse widths or different pulse envelope shapes. The receiver includes a pulse decoder configured to detect the relevant pulse characteristics of the received pulse and a resolver that determines if the pulse characteristics of the received pulse matches the pulse characteristics of the current scan position or that of a previous scan position.
-
公开(公告)号：US20180284245A1
公开(公告)日：2018-10-04
申请号：US15828195
申请日：2017-11-30
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Joseph G. LaChapelle , Rodger W. Cleye , Scott R. Campbell
CPC classification number: G01S7/497 , G01S7/4861 , G01S7/4868 , G01S7/4873 , G01S17/42 , G01S17/89 , G01S17/936 , G05D1/0214
Abstract: A method for calibrating lidar systems operating in vehicles includes detecting a triggering event, causing the lidar system to not emit light during a calibration period, determining an amount of noise measured by the lidar system during the calibration period, generating a noise level metric based on the amount of noise detected during the calibration period, and adjusting subsequent readings of the lidar system using the noise level metric. The adjusting includes measuring energy levels of return light pulses emitted from the lidar system and scattered by targets and offsetting the measured energy levels by the noise level metric.
-
公开(公告)号：US20180284241A1
公开(公告)日：2018-10-04
申请号：US15710744
申请日：2017-09-20
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Scott R. Campbell , Lane A. Martin , Matthew D. Weed , Jason M. Eichenholz
Abstract: A lidar system includes a light source, a scanner, and a receiver and is configured to detect remote targets located up to RMAX meters away. The receiver includes a detector with a field of view larger than the light-source field of view. The scanner causes the detector field of view to move relative to the instantaneous light-source field of view along the scan direction, so that (i) when a pulse of light is emitted, the instantaneous light-source field of view is approximately centered within the detector field of view, and (ii) when a scattered pulse of light returns from a target located RMAX meters away, the instantaneous light-source field of view is located near an edge of the field of view of the detector and is contained within the field of view of the detector.
-
-
-
-
-
-
-
-
-
Search Results
67
records
(took 0.025 seconds)
