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公开(公告)号：US20210325663A1
公开(公告)日：2021-10-21
申请号：US16852732
申请日：2020-04-20
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Sean P. Hughes
Abstract: A scanner for a lidar system is configured to direct emitted light to scan a field of regard of the lidar system in accordance with a scan pattern. The scanner includes a mirror and an actuator assembly. The mirror includes a reflective surface and a rear surface and is pivotable along a mirror axle. The actuator assembly is disposed along the rear surface of the mirror and is configured to exert a torque on the mirror to cause the mirror to pivot about the mirror axle.
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Patent Agency Ranking
公开(公告)号：US10578720B2
公开(公告)日：2020-03-03
申请号：US15974319
申请日：2018-05-08
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： John G. Hughes , Sean P. Hughes
IPC: G01S7/48 , G01S7/481 , G01S7/4863 , G02B26/10 , G02B26/08 , G01S7/484 , G02B5/09 , G02B26/12 , G01S13/931
Abstract: A lidar system includes a light source configured to produce a beam of light, a scanner configured to scan a field of regard of the lidar system, and a receiver configured to detect light from the beam of light scattered by a remote target. The scanner includes a polygon mirror having a block with a first wall, a second wall, and several reflective surfaces angularly offset from one another along a periphery of the block, the polygon mirror configured to rotate about a scan-mirror rotation axis to scan the beam of light across the field of regard. The scanner further includes a bracket adjacent to the polygon mirror, where at least one of the polygon mirror or the bracket includes a noise-reducing feature configured to reduce acoustic noise produced when pressure waves generated by the polygon mirror during rotation are incident on one or more components of the scanner.
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公开(公告)号：US20190154816A1
公开(公告)日：2019-05-23
申请号：US15958749
申请日：2018-04-20
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： John Hughes , Nicholas Ventola , Sean P. Hughes
CPC classification number: G01S7/497 , G01D5/34 , G01S7/4817 , G01S17/42 , G01S17/89 , G01S17/936 , G05D1/0061 , G05D1/0231 , G05D2201/0213
Abstract: A lidar system comprises a light source to emit pulses of light, a scanner, a receiver, and a controller. The scanner includes a rotatable polygon mirror with reflective surfaces, the reflective surfaces being angularly offset from one another along a periphery of the block. The scanner further includes a polygon mirror axle extending into the block, about which the block rotates, a rotary encoder having a rotational component with an axis of rotation aligned with the polygon mirror axle, the rotational component having one or more characteristics configured to cause the rotary encoder to return a signal, and a second mirror pivotable along an axis orthogonal to the polygon mirror axle. The controller is configured to determine a rotational parameter of the polygon mirror in response to the signal returned from the rotary encoder.
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公开(公告)号：US20190310351A1
公开(公告)日：2019-10-10
申请号：US15974319
申请日：2018-05-08
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： John G. Hughes , Sean P. Hughes
Abstract: A lidar system includes a light source configured to produce a beam of light, a scanner configured to scan a field of regard of the lidar system, and a receiver configured to detect light from the beam of light scattered by a remote target. The scanner includes a polygon mirror having a block with a first wall, a second wall, and several reflective surfaces angularly offset from one another along a periphery of the block, the polygon mirror configured to rotate about a scan-mirror rotation axis to scan the beam of light across the field of regard. The scanner further includes a bracket adjacent to the polygon mirror, where at least one of the polygon mirror or the bracket includes a noise-reducing feature configured to reduce acoustic noise produced when pressure waves generated by the polygon mirror during rotation are incident on one or more components of the scanner.
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公开(公告)号：US10451716B2
公开(公告)日：2019-10-22
申请号：US15958749
申请日：2018-04-20
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： John Hughes , Nicholas Ventola , Sean P. Hughes
Abstract: A lidar system comprises a light source to emit pulses of light, a scanner, a receiver, and a controller. The scanner includes a rotatable polygon mirror with reflective surfaces, the reflective surfaces being angularly offset from one another along a periphery of the block. The scanner further includes a polygon mirror axle extending into the block, about which the block rotates, a rotary encoder having a rotational component with an axis of rotation aligned with the polygon mirror axle, the rotational component having one or more characteristics configured to cause the rotary encoder to return a signal, and a second mirror pivotable along an axis orthogonal to the polygon mirror axle. The controller is configured to determine a rotational parameter of the polygon mirror in response to the signal returned from the rotary encoder.
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公开(公告)号：US10324170B1
公开(公告)日：2019-06-18
申请号：US15974153
申请日：2018-05-08
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： John P. Engberg, Jr. , Christopher A. Engberg , John G. Hughes , Sean P. Hughes
Abstract: A lidar system includes a light source configured to produce a first and second beams of light, receivers to configured to detect light from the first and second beams of light and scattered by one or more remote targets, and a scanner including a first scan mirror configured to pivot along a first-mirror pivot axis to scan the first beam of light along a first direction, a second scan mirror configured to pivot along a second-mirror pivot axis to scan the second beam of light along the first direction, and a polygon with multiple reflective surfaces configured to rotate about a polygon-mirror rotation axis to scan the first and second beams of light along a second direction.
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